Patent Publication Number: US-2022234816-A1

Title: Discharge apparatus

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This is the U.S. National Phase under 35 U.S.C. 371 of International Application No. PCT/JP2019/051302, filed on Dec. 26, 2019, which in turn claims the benefit of Japanese Patent Application Nos. 2019-110872, filed on Jun. 14, 2019, 2019-191572, filed on Oct. 18, 2019, 2019-191573, filed on Oct. 18, 2019, 2019-229748, filed on Dec. 19, 2019, and 2019-229749, filed on Dec. 19, 2019, the disclosures of which are incorporated by reference herein. 
    
    
     BACKGROUND OF THE INVENTION 
     Field of the Invention 
     The present invention relates to a discharge device. Particularly, the present invention relates to the discharge device provided with a pressurized product in which a concentrate and a pressurizing agent are filled and sealed inside a container, and a discharge member which is detachable from the pressurized product. 
     Description of the Related Art 
     International Patent Publication Application No. WO2015/080252 shows a discharge device configured with a discharge member provided with a valve to the container in which a concentrate and a pressurizing agent are filled. In this discharge device, the discharge member is detachable from the container. Specifically, the discharge member is provided with a valve and a cap covering the valve. Then, by screwing the cap to a screw provided in a neck part outer periphery of the container, the discharge member is mounted to the container. Thus, the discharge member is removed from the container after the concentrate is completely discharged, and it is possible for a recycle of the discharge member so as to be replaced to a new container. 
     Note that in the discharge device of International Patent Publication Application No. WO2015/080252, the discharge member is simply screwed to the container. Therefore, it is possible to remove the discharge member before the discharge is completed. If the cap is removed in a remaining state of the concentrate, there is a chance to spray the concentrate out. 
     The description herein of advantages and disadvantages of various features, embodiments, methods, and apparatus disclosed in other publications is in no way intended to limit the present invention. For example, certain features of the preferred described embodiments of the invention may be capable of overcoming certain disadvantages and/or providing certain advantages, such as, e.g., disadvantages and/or advantages discussed herein, while retaining some or all of the features, embodiments, methods, and apparatus disclosed therein. 
     SUMMARY OF THE INVENTION 
     The disclosed embodiments of the present invention have been developed in view of the above-mentioned and/or other problems in the related art. The disclosed embodiments of the present invention can significantly improve upon existing methods and/or apparatuses. 
     A technical object in the present invention is to provide a discharge device which can suppress the leakage of the concentrate due to the removal of the valve. 
     In some embodiments of the present disclosure, a discharge device is characterized to include a suppressing means (a maintaining mechanism, a movable lid, pressing to the bottom of the recessed part of the projecting part, a part releasing mechanism, a ratchet mechanism, a thin part and a plurality of coupling parts) for suppressing the leakage of the concentrate caused by removing the valve. 
     In some embodiments of the present disclosure, a discharge device is provided with a pressurized product filling and sealing the concentrate and the pressurizing agent in the container, and a discharge member discharging the concentrate by breaking through the pressurized product. The discharge member is provided with a valve, and a cap which covers the valve and is detachably mounted to the pressurized product. In addition to the mounting of the valve by the cap, it is preferable to provide a maintaining mechanism in order to maintain the state in which the valve is mounted to the pressurized product. 
     In such discharge device, the maintaining mechanism is provided to any one of the valve and the pressurized product, and it is preferable to provide an engaging means to maintain the state in which the valve is mounted to the pressurized product against the pressure of the pressurizing agent. 
     Further, in some embodiments of the present disclosure, the engaging means is provided in any one of the valve and the pressurized product, and is preferably provided with an engaging projection for engaging to the other one. Further, the engaging projection may be a screw-shape. Further, the engaging projection is provided in the valve, and the valve breaks through the pressurized product, and it is preferable to engage the engaging projection to an edge of a through hole made by the breaking through. The valve is provided with a housing, and is preferably provided with a seal opening part which has the engaging projection and is detachable from the housing. Further, the valve may be engaged with or disengaged from the pressurized product. Specifically, the engaging projection is provided in the valve and the pressurized product, and by engaging the engaging projection of the valve and the engaging projection of the pressurized product, the valve and the pressurized product are engaged. It is preferable to provide an engagement releasing part R positioned adjacent to the engaging projection of any one of the valve and the pressurized product to release the engagement of the engaging projections each other. 
     Further, in some embodiments of the present disclosure, the maintaining mechanism may be provided with an inner cylindrical part positioned at the outer periphery of the cap so as to make the inner diameter smaller by interlocking with the contraction of the container due to the reduction of the internal pressure. Further, in this case, it is preferable to provide an engaging projection at any one of the inner cylindrical part and the cap to firstly engage with the other one when the inner diameter of the inner cylindrical part becomes small. 
     In some embodiments of the present disclosure, a discharge device is provided with a pressurized product filling and sealing the concentrate and the pressurizing agent in the container, and a discharge member discharging the concentrate by breaking through the pressurized product. The discharge member is provided with a valve and a cap which covers the valve and is detachably mounted to the pressurized product. The container is provided with a container body and a lid sealing an opening of the container body. It is preferable that the lid is provided with a closing part which is broken through by the discharging member, and a movable lid which maintains an open state by covering the closing part and mounting the discharge member and which becomes a close state by removing the discharge member. 
     In some embodiments of the present disclosure, a discharge device is provided with a pressurized product filling and sealing the concentrate and the pressurizing agent in the container, and a discharge member discharging the concentrate by breaking through the pressurized product. The discharge member is provided with a valve and a cap which covers the valve and is detachably mounted to the pressurized product. A recessed part is provided in any one of the cap and the container, and a projecting part inserting into the inside of the recessed part formed in the other one is provided. By engaging the projecting part to the recessed part, the cap and the container are detachably mounted, and it is preferable to press the projecting part against the bottom of the recessed part by the pressure of the pressurizing agent. 
     In some embodiments of the present disclosure, a discharge device is provided with a pressurized product filling and sealing the concentrate and the pressurizing agent in the container, and a discharge member discharging the concentrate by breaking through the pressurized product. The discharge member is provided with a valve, and the container is provided with a container body and a lid which seals the opening of the container body. The lid is provided with a closing part which is broken through by the discharge member, and a fitting cylindrical part in order to form a sealing with the valve positioned further downstream than the closing part. A seal member is positioned between the outer surface of the valve and the inner surface of the fitting cylindrical part, and the discharge member is provided with a cap covering the valve. The valve is integrally provided with the cap, and it is preferable to provide a part releasing mechanism which releases a part of the sealing of the seal member by moving the valve due to the operation in which the cap starts removing. 
     Further, in some embodiments of the present disclosure, the part releasing mechanism is provided with the seal member mounted on any one of the outer surface of the valve and the inner surface of the fitting cylindrical part, and a recessed groove provided on the other one and communicating with the outside. It is preferable that the recessed groove is provided in a position shifting in a moving direction of the valve from a position of the seal member before the cap starts removing. 
     Specifically, in some embodiments of the present disclosure, the part releasing mechanism is provided with the seal member mounted on the outer surface of the valve and a recessed groove provided on the inner surface of the fitting cylindrical part and communicating with the outside. It is preferable that the recessed groove is provided further downstream than the position of the seal member before the cap starts removing. 
     In some embodiments of the present disclosure, a valve assembly including the valve and the cap is provided. It is preferable that the valve assembly is provided with the projections which are not configured to contact with the projections of the container before the cap starts removing, and which are configured to contact with the projections of the container when the cap starts removing. 
     In some embodiments of the present disclosure, it is preferable that the removing condition of the cap when the part releasing mechanism operates and the removing condition of the cap when the projections contact with the projections of the container are equal. 
     The discharge member is further provided with a cover part covering the cap. It is preferable that a ratchet mechanism is formed on the inner surface of the cover part and the outer surface of the cap so as to perform idling when the cover part is rotated in the removing direction of the cap. 
     In some embodiments of the present disclosure, alternatively, it is preferable that the discharge member is further provided with the cover part covering the cap, and the cover part is engaged with the pressurized product. 
     In some embodiments of the present disclosure, alternatively, it is preferable that the discharge member is further provided with the cover part covering the cap, and the cover part is provided with an engaging part, so that the cover part is rotatably engaged to the cap around the axis of the cap. 
     In some embodiments of the present disclosure, the container body is provided with an outer container and an inner container having flexibility to be stored inside the outer container. It is preferable that the inside of the inner container is a concentrate chamber filling the concentrate, and a space between the outer container and the inner container is a pressurizing agent chamber filling the pressurizing agent. Alternatively, it is preferable that the inside of the inner container is a pressurizing agent chamber filling the pressurizing agent, and a space between the outer container and the inner container is a concentrate chamber filling the concentrate. 
     In some embodiments of the present disclosure, it is preferable that the lid is provided with an annular disk part covering the upper end surface of the outer container, a lid part closing the opening of the inner container, a fitting cylindrical part provided at the central part of the annular disk part, a closing part provided at the bottom part of the fitting cylindrical part, and a concentrate passage communicating between the inside of the fitting cylindrical part and the concentrate chamber when opening the closing part. 
     In some embodiments of the present disclosure, discharge device is provided with a pressurized product filling and sealing the concentrate and the pressurizing agent in the container, and a discharge member discharging the concentrate by breaking through the pressurized product. The discharge member is provided with a valve, the cap which covers the valve and detachably mounts the valve to the pressurized product, and a cover part covering the cap. The container is provided with a container body, and a lid sealing the opening of the container body. The lid is provided with a closing part which is broken through by the discharge member, and a fitting cylindrical part in order to form a sealing with the valve positioned further downstream than the closing part. It is preferable that a ratchet mechanism is formed on the inner surface of the cover part and the outer surface of the cap so as to perform idling when the cover part is rotated in the removing direction of the cap. 
     Further, in some embodiments of the present disclosure, it is preferable that the valve and the cap are integrated. Further, it is preferable that the cover part is provided with an engaging part, so that the cover part is rotatably engaged to the cap around the axis of the cap. 
     The container is provided with the container body, and the lid sealing the opening of the container body. It is preferable that the lid is provided with the closing part pushing down by the mounting of the discharge member, a thin part provided around the closing part and forming a through hole by the mounting of the discharge member, and a plurality of coupling parts restricting the falling-off from the lid of the closing part. 
     The above and/or other aspects, features and/or advantages of various embodiments will be further appreciated in view of the following description in conjunction with the accompanying figures. Various embodiments can include and/or exclude different aspects, features and/or advantages where applicable. In addition, various embodiments can combine one or more aspect or feature of other embodiments where applicable. The descriptions of aspects, features and/or advantages of particular embodiments should not be construed as limiting other embodiments or the claims. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. Like numbers refer to like elements throughout. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items and may be abbreviated as “/”. It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. Unless indicated otherwise, these terms are only used to distinguish one element from another. For example, a first object could be termed a second object, and, similarly, a second object could be termed a first object without departing from the teachings of the disclosure. It will be further understood that the terms “comprises” and/or “comprising,” or “includes” and/or “including” when used in this specification, specify the presence of stated features, regions, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, regions, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being “connected” or “coupled” to or “on” another element, it can be directly connected or coupled to or on the other element or intervening elements may be present. In contrast, when an element is referred to as being “directly connected” or “directly coupled” to another element, there are no intervening elements present. Other words used to describe the relationship between elements should be interpreted in a like fashion (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). However, the term “contact,” as used herein refers to direct contact (i.e., touching) unless the context indicates otherwise. Terms such as “same,” “planar,” or “coplanar,” as used herein when referring to orientation, layout, location, shapes, sizes, amounts, or other measures do not necessarily mean an exactly identical orientation, layout, location, shape, size, amount, or other measure, but are intended to encompass nearly identical orientation, layout, location, shapes, sizes, amounts, or other measures within acceptable variations that may occur, for example, due to manufacturing processes. The term “substantially” may be used herein to reflect this meaning. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and/or the present application, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The disclosed embodiments of the present invention are shown by way of example, and not limitation, in the accompanying figures. 
         FIG. 1(A)  is a cross-sectional view showing a discharge device of the present invention. 
         FIG. 1(B)  is a cross-sectional view of a container body used in the discharge device. 
         FIG. 2(A)  is a cross-sectional view of major parts of the discharge member of  FIG. 1(A) . 
         FIG. 2(B)  is a cross-sectional view of major parts of the pressurized product. 
         FIG. 3(A)  is a cross-sectional view of major parts showing the state before opening the pressurized product. 
         FIG. 3(B)  is a cross-sectional view of major parts showing the state after opening the pressurized product. 
         FIG. 3(C)  is a cross-sectional view of major parts showing the state of removing the discharge member from the pressurized product. 
         FIG. 4(A)  is a cross-sectional view of major parts showing the state before opening the pressurized product according to another embodiment of the discharge device of the present invention. 
         FIG. 4(B)  is a cross-sectional view of major parts showing the state after opening the pressurized product according to another embodiment of the discharge device of the present invention. 
         FIG. 5(A)  is a diagram looking up from the lower side of a valve holder. 
         FIG. 5(B)  is a diagram looking down from the upper side of the lid. 
         FIG. 6  is a schematic diagram of an engaging means. 
         FIG. 7  is a cross-sectional view of a discharge device of  FIGS. 4(A) and 4(B) . 
         FIG. 8(A)  is a cross-sectional view of major parts showing the state before opening the pressurized product according to another embodiment of the discharge device of the present invention. 
         FIG. 8(B)  is a cross-sectional view of major parts showing the state after opening the pressurized product according to another embodiment of the discharge device of the present invention. 
         FIG. 9(A)  is a cross-sectional view of whole according to still another embodiment of the discharge device of the present invention. 
         FIG. 9(B)  is schematic diagram showing a change of the engagement state between the inner cylindrical part and the cap according to still another embodiment of the discharge device of the present invention. 
         FIG. 10  is a cross-sectional view of major parts showing a pressurized product according to still another embodiment of the discharge device of the present invention. 
         FIG. 11(A)  is a cross-sectional view of major parts showing the state after opening the pressurized product of  FIG. 10 . 
         FIG. 11(B)  is a cross-sectional view of major parts showing the state of removing the valve from the pressurized product of  FIG. 10 . 
         FIG. 12(A)  is a cross-sectional view of major parts in the pressurized product used in still another embodiment of the discharge device of the present invention. 
         FIG. 12(B)  is a diagram looking up from the lower side of the movable lid in the pressurized product used in still another embodiment of the discharge device of the present invention. 
         FIG. 13(A)  is a cross-sectional view of major parts showing the state after opening the pressurized product of  FIGS. 12(A) and 12(B) . 
         FIG. 13(B)  is a cross-sectional view of major parts showing the state of removing the valve from the pressurized product of  FIGS. 12(A) and 12(B) . 
         FIG. 14  is a partial cross-sectional view showing still another embodiment of the discharge device of the present invention. 
         FIG. 15(A)  is a cross-sectional view of major parts of the discharge member. 
         FIG. 15(B)  is a cross-sectional view of major parts of the pressurized product. 
         FIG. 16(A)  is a cross-sectional view of major parts showing the opening state of the pressurized product. 
         FIG. 16(B)  is a cross-sectional view of major parts showing the state in which the cap is loosened after opening. 
         FIG. 17(A)  is a cross-sectional view of major parts showing the pressurized product, and 
         FIG. 17(B)  is a cross-sectional view of major parts showing the state in which the cap is loosened after opening the pressurized product. 
         FIG. 18(A)  is a cross-sectional view of major parts showing the state in which an exterior part is mounted in the pressurized product. 
         FIG. 18(B)  is a horizontal cross-sectional view of the cover part and the cap. 
         FIG. 19(A)  is a cross-sectional view of major parts showing the state in which the exterior part is mounted in the pressurized product. 
         FIG. 19(B)  is a side view showing the state in which the exterior part is mounted in the pressurized product. 
         FIG. 20  is a cross-sectional view of major parts showing the state in which an exterior body is mounted in the pressurized product. 
         FIG. 21(A)  is a cross-sectional view of major parts of the discharge member. 
         FIG. 21(B)  is a side view of the pressurized product. 
         FIG. 22(A)  is a cross-sectional view of major parts showing the opening state of the pressurized product. 
         FIG. 22(B)  is a cross-sectional view of major parts showing the state in which the cap is loosened after opening. 
         FIG. 23(A)  is a cross-sectional view showing another discharge product. 
         FIG. 23(B)  is a cross-sectional view showing the opening state of the discharge product. 
         FIG. 24(A)  is a cross-sectional view of the discharge member. 
         FIG. 24(B)  is a cross-sectional view of major parts of the pressurized product. 
         FIG. 25(A)  is a cross-sectional view of major parts of the discharge product before opening. 
         FIG. 25(B)  is a cross-sectional view of major parts of the discharge product after opening. 
         FIG. 25(C)  is a cross-sectional view of major parts showing the state in which the cap is loosened after opening. 
         FIG. 26(A)  is a cross-sectional view of major parts in a pressurized product used in still another embodiment of the discharge device of the present invention. 
         FIG. 26(B)  is a diagram looking up from the lower side of the lid in a pressurized product used in still another embodiment of the discharge device of the present invention. 
         FIG. 27(A)  is a cross-sectional view of major parts showing the state after opening the pressurized product of  FIGS. 26(A) and 26(B) . 
         FIG. 27(B)  is a cross-sectional view of major parts showing the state of removing the valve from the pressurized product of  FIGS. 26(A) and 26(B) . 
     
    
    
     DETAILED DESCRIPTION 
     In the following paragraphs, some embodiments of the invention will be described by way of example and not limitation. It should be understood based on this disclosure that various other modifications can be made by those in the art based on these illustrated embodiments. 
     A discharge device  10  shown in  FIG. 1A  is provided with a double pressurized container (container)  11 , a discharge member  12 , and concentrate (contents) C and pressurizing agent P filled in the double pressurized container  11 . The double pressurized container  11  in which the concentrate C and the pressurizing agent P are filled is a pressurized product  11   a . It is sold as a set of products before assembling the pressurized product  11   a  and the discharge member  12  (see  FIG. 1A ), or an unopened state in which it is half-assembled (see  FIG. 3A ). The pressurized product  11   a  is sold with the discharge member  12 , and it is also sold individually as a replacement. Accordingly, the pressurized product  11   a  is sealed in order not to leak the concentrate C or the pressurizing agent P until the discharge member  12  is mounted (until it is opened by the discharge member  12 ). Further, the discharge member  12  may be individually sold. 
     The double pressurized container  11  is provided with an outer container  13 , an inner container  14  having flexibility and stored inside the outer container  13 , and a lid (sealing disk)  15  sealing the outer container  13  and the inner container  14 . A valve or a pump is not provided. The assembly of the outer container  13  and the inner container  14  is a container body  16  (see  FIG. 1B ). The inside of the inner container  14  is a concentrate chamber Sc in which the concentrate C is filled, and a space between the outer container  13  and the inner container  14  is a pressurizing agent chamber Sp in which the pressurizing agent P is filled. They are sealed by the lid  15 . That is, the double pressurized container  11  separately store the concentrate C and the propellant P and is configured to discharge only the concentrate C, and thus, the leakage of the pressurizing agent P such as compressed gas is prevented. 
     As shown in  FIG. 1B , the outer container  13  is provided with a bottom part  13   a , a cylindrical-shaped body part  13   b , a should part  13   c , and a cylindrical-shaped neck part  13   d . A male screw  13   e  is formed in the outer periphery of the neck part  13   d . The upper end surface  13   f  of the neck part  13   d  is substantially flat in order to fix the lid  15 . In the embodiment, the bottom part  13   a  of the outer container  13  is provided with an annular contact area  13   a   1  projected downwardly, and a dome part  13   a   2  projected upwardly which is provided at the center of the bottom part  13   a . With this, the pressure resistance improves and the impact resistance at the time of falling-off, etc. improves. Therefore, it is safe at the time of a distribution as a single item or a delivery by a home delivery. Further, it has a contact area  13   a   1 , so that it can be stably and simply placed on a flat table, etc. However, it may be a spherical bottom surface. 
     As shown in  FIG. 2B , on the upper end surface  13   f  of the neck part  13   d  of the outer container  13 , when performing the ultrasonic wave welding, it is easily dissolved with the lid  15  by increasing the contact pressure, and an annular projection  13   g  for making a welding part in order to be integrated with the lid  15  is formed. An annular projection may be provided in the lid  15  side, and it may be provided in both sides. And, at the interior side or the external side of the upper end surface  13   f , a plurality of inclined parts  13   h  is provided, and it provides a space in which a resin piece made by cooling the melted resin when performing the ultrasonic wave welding is stored. At the outer periphery of the neck part  13   d  of the outer container  13 , an annular support part  13   d   1  for hanging at the time of delivery or at the time of welding is provided. 
     Returning to  FIG. 1B , similar to the outer container  13 , the inner container  14  is also provided with a bottom part  14   a , a body part  14   b , a should part  14   c , and a neck part  14   d . Further, at the bottom part  14   a  of the inner container  14 , an annular recessed portion  14   a   1  projected downwardly and a dome part  14   a   2  projected upwardly at the center are formed. A small gap is formed between the outer surface of the neck part  14   d  of the inner container  14  and the inner surface of the neck part  13   d  of the outer container  13 . The inner surface of the neck part  14   d  of the inner container  14  is a smooth cylindrical surface. The bottom part  14   a  of the inner container  14  abuts on the bottom part  13   a  of the outer container  13 , and at the time of filling the pressurizing agent or at the time of fixing the lid  15 , etc., it is supported in order not to fall down the inner container  14 . 
     As shown in  FIG. 2B , the upper end surface  14   e  of the neck part  14   d  of the inner container  14  projects further than the upper surface  13   f  of the outer container  13 , and in its projection part, a flange  14   f  engaging with the upper end surface  13   f  of the outer container  13  is formed. The thickness of the flange  14   f  (dimension in a radial direction) is approximately ⅓ to ½ of the thickness of the neck part  13   d  of the outer container  13 . Therefore, when the flange  14   f  is engaged with the upper end surface  13   f  of the neck part  13   d  of the outer container  13 , the upper end surface  13   f  of the neck part  13   d  of the outer container  13  remains without covering the outer part. The annular projection  13   g  of the upper end of the outer container  13  is provided at the outer part. Further, at the upper end surface  14   e  of the neck part  14   d  of the inner container  14 , an annular projection  14   g  is formed in order to make a welding part with the lid  15  by increasing the contact pressure with the lid  15  at the time of the ultrasonic wave welding. 
     On the lower surface of the flange  14   f  of the inner container  14 , a horizontal groove  14   h  for filling pressurizing agent which is extended in a radial direction is formed at four positions at equal intervals. Further, on the outer peripheral surface of the neck part  14   d  of the inner container  14 , a longitudinal groove  14   i  communicating with the horizontal groove  14   h  is formed. The longitudinal groove  14   i  extends to the upper end of the shoulder part  14   c  from the horizontal groove  14   h , so as to easily fill the pressurizing agent P inside the pressurizing agent chamber Sp. 
     Both the outer container  13  and the inner container  14  are made of a thermoplastic resin product such as polyethylene terephthalate, polyethylene naphthalate, polyethylene, polypropylene, etc. For example, these containers can be manufactured by inserting a preform for the inner container into a preform for the outer container and performing a blow-molding the part lower than the neck parts  13   d ,  14   d  at the same time. Specifically, it is preferable to use an injection blow molding in which a predetermined shaped preform is formed by performing injection molding and then, performing the blow molding. Further, by raising up the bottom part  13   a  when shaping the dome part  13   a   2 , the annular recessed portion  14   a   1  of the inner container can be stretched and made thin, so that the size and weight can be reduced. 
     As shown in  FIG. 2B , the lid  15  is provided with a bottomed cylindrical-shaped seal part  15   a  inserted inside the neck part  14   d  of the inner container  14 , and an annular flange  15   b  which continues to the upper end of the seal part. The lower part of the seal part  15   a  is a fitting cylindrical part  15   a   1  which is formed in a diameter smaller than the upper part. At the bottom part of the seal part  15   a , that is, the bottom part  15   c  of the fitting cylindrical part  15   a   1 , a closing part (unsealing part)  15   d  provided with a pressure receiving part  15   d   1  which is made thick as compared with that of the periphery is provided. The closing part  15   d  is normally a circular shape in plane view. Note that other shapes such as a rectangular shape, etc. can be employed. 
     The periphery of the closing part  15   d  is surrounded by a thin part (break portion, weakening line)  15   f  which is easily breakable such as an annular groove. The pressure receiving part  15   d   1  is approximately entirely provided on the upper surface of the closing part  15   d , and the thin part  15   f  is formed on the upper surface of the bottom part  15   c . Note that the thin part  15   f  may be formed on the lower surface. The thin part  15   f  is formed as, for example, a V-groove. The thin part  15   f  is continuously formed as to tear off when the closing part  15   d  is opened, but it may not be continuously formed as long as it is breakable. To prevent the closing part  15   d  from falling-off or disengaging after opening, a coupling part  15   g  extending in a radial direction across the weakening line  15   f  may be provided. 
     It is preferable that the air inside the inner container  14  can be discharged between the outer peripheral surface of the seal part  15   a  and the inner surface of the neck part  14   d  of the inner container  14  when the lid  15  is mounted to the neck part  14   d  of the inner container, and it is the fitting state in which the concentrate C inside the inner container  14  can be liquid-sealed. Further, it is preferable that the inner peripheral surface of the fitting cylindrical part  15   a   1  forms a smooth cylindrical surface in order not to leak the concentrate C by tightly contacting with the seal member  28  of the valve  21  when opening the closing part  15   d . It may be a tapered-shape which is reduced downwardly in diameter. 
     The flange  15   b  of the lid  15  is welded to the upper end surface  13   f  of the neck part  13   d  of the outer container  13  and the upper end surface  14   e  of the neck part  14   d  of the inner container  14  by welding such as the ultrasonic wave welding, the laser welding, the high frequency welding, etc. after filling the concentrate C and the pressurizing agent P, so as to be sealed. In this embodiment, since the annular projection  14   g  is formed on the upper end surface  14   e  of the inner container  14  and the annular projection  13   g  is formed on the upper end surface  13   f  of the outer container  13 , the sealing is secured after the welding. Further, it may be adhered for the purpose of which the airtight is enhanced, etc. 
     The bottom part  15   c  of the fitting cylindrical part  15   a   1  is provided slightly upper position than the lower end of the fitting cylindrical part  15   a   1  because the rigidity of the bottom part  15   c  is enhanced and the thin part  15   f  becomes easily breakable. The dimension of the fitting cylindrical part  15   a   1  is made smaller than the diameter of the upper part of the seal part  15   a  because the molding accuracy of the inner surface of the fitting cylindrical part  15   a   1  is enhanced, so as to miniaturize the area receiving an internal pressure surrounding by the seal member  28  of the discharge member  12  and reduce the upward force applied to the lid  15 . Further, this is because the space for storing the valve holding part  18   a  projected downward is secured. The lower end of the fitting cylindrical part  15   a   1  may be a cylindrical shape, but it may be connected by a horizontal groove in order not to accumulate gas between the lower end and the bottom part  15   c.    
     The lid  15  is provided with an annular disk part  17  expanding radially outwardly from the upper end of the seal part  15   a , and an outer cylindrical part  17   a  extending downwardly from the outer edge of the annular disk part  17 . The lower surface of the annular disk part  17  is the sealing part by abutting on the upper end surface  14   e  of the neck part  14   d  of the inner container  14  and forming a welding part, and the lower surface of the outer cylindrical part  17   a  is the sealing part by abutting on the upper end surface  13   f  of the neck part  13   d  of the outer container  13  and forming the welding part. 
     It is preferable that the material of the lid  15  uses a thermoplastic resin which is excellent thermal bondability with the outer container  13  and inner container  14 , and in order to enhance the welding strength, it is preferable to use the same material in the outer container  13  and the inner container  14 . As shown in  FIG. 1A , the concentrate chamber Sc and the pressurizing agent chamber Sp are sealed by the lid  15 , and by fixing any one of the inner container  14  and the outer container  13 , or both containers, the contents (concentrate C, pressurizing agent P) can be safely stored for a long period of time without any leakage. The thin part  15   f  has sufficient sealing function in the unopened state, and it has a shape so that it is broken easily. 
     The concentrate C may be skin supplies such as face cleanser, detergent, bath agents, moisturizers, cleansing agents, sunscreen, skin lotions, shaving agents, depilatory agents, antiperspirants, sterilizing disinfectants, pest repellents, etc. human body goods such as hair supplies, etc. of treatment agents, styling agents, hair dyeing agents, etc., foods such as whipped cream, olive oil, etc., household goods such as deodorants, fragrances, insect repellent agents, insecticide, pollen remover, germicide, detergent, etc., and industrial supplies such as lubricants, etc. However, it is not limited to these purposes of use. It is preferable that the concentrate C contacts with the inner surface side of the closing part  15   d . With this, at the time of welding the lid  15  and the container body  16 , the closing part  15   d  is cooled by the concentrate C, and it can solve the problem of melting the closing part  15   d  by heat. 
     The pressurizing agent P is preferably compressed gas such as nitrogen gas, compressed air, carbon dioxide gas, etc. The pressure inside the double pressurized container  11  by the pressurizing agent is 0.1 to 0.5 MPa (25° C., gauge pressure), and particularly, it is preferably 0.3 to 0.5 MPa (25° C., gauge pressure) which is almost the same pressure as carbonated drink. Further, the capacity of the outer container  13  is preferably 30 to 500 ml. The capacity of the inner container (concentrate chamber Sc)  14  is preferably approximately 20 to 300 ml. The capacity of the pressurizing agent chamber Sp is preferably approximately 10 to 200 ml. 
     As described above, the pressurized container  11  has less number of components, and the operation part such as a valve, etc. is not provided, so that it can be manufactured inexpensively. Since the pressure of the double pressurized container  11  is low and is almost same as the carbonated drink, etc., it is safe when a consumer carries or when a distributor deliveries. Further, in case, if the outer container  13  cracks, only the pressurizing agent P leaks, but the concentrate C inside the inner container  14  does not leak. Therefore, the safety is further increased. 
     Further, the outer container  13  and the inner container  14  of the pressurized product  11   a  is made of synthetic resin, and the inner container  14  is surrounded by the pressurizing agent P and is further surrounded by the outer container  13 , so that the elasticity of the discharge product  11   a  is high and it is hardly broken. Further, since the closing part  15  is provided inside, it reduces the risk that the closing part  15   d  is erroneously broken. Therefore, the safety is further increased. 
     As shown in  FIG. 2A , the discharge member  12  is provided with a cap (mounting part)  20  screwing the male screw  13   e  of the neck part  13   d  of the outer container  13 , the valve  21  covered by the cap  20 , and an operation button (actuator, reference numeral  23  in  FIG. 1A ) provided with a discharge nozzle mounted to the stem  22  of the valve  21 . The cap  20  is a bottomed cylindrical shape, and a female screw is formed on the inner peripheral surface. At the center of the upper bottom  20   a  of the cap  20 , an opening  20   b  passing through the base part of the operation button  23  is formed. The cap  20  and the valve  21  in which the operation button  23  is not mounted are treated as a valve unit or a valve assembly. 
     The valve  21  is provided with a bottomed cylindrical shape housing  24 , a seal opening part  27  detachably mounted to the housing  24 , the aforementioned stem  22  vertically movably stored inside the seal opening part, a spring  25  energizing the stem  22  upwardly, a stem rubber  26 , and a valve holder  18  provided with a cylindrical-shaped valve holding part  18   a  holding the upper part of the housing  24 , and configures a discharge passage of the concentrate C. The stem  22 , the spring  25 , the stem rubber  26  configures a valve mechanism for switching a discharge state and a non-discharge state of the concentrate C, and the housing  24  and the valve holder  18  configures a storing space in which the valve mechanism is stored. 
     In this embodiment, at the lower end of the housing  24 , a columnar-shaped seal opening part  27  projecting downwardly is mounted. Further, at the lower part circumference of the housing  24 , a seal member  28  such as an O-ring, etc. is mounted. The bottom surface  27   a  of the seal opening part  27  is made flat in order to abut on the upper surface of the pressure receiving part  15   d   1 . 
     In this embodiment, the diameter of the seal opening part  27  is slightly larger than the pressure receiving part  15   d   1 . Further, it is same as the diameter of the range surrounding the thin part  15   f  or slightly larger. In the outer periphery of the seal opening part  27 , an engaging projection  27   e  for engaging with the lid  15  is provided. The engaging projection  27   e  is arranged, so that it is easily inserted into the lid  15  and it is prevented from coming off, and the lower end of the valve  21  is an arrowhead-shape. Further, the upper part of the seal opening part  27  is provided with a columnar-shaped mounted part  27   f  mounted in the lower end of the housing  24 . The mounting part  27   f  is inserted into the insertion hole  24   d  provided in the lower part of the housing  24 . 
     The seal member  28  seals between the inner peripheral surface of the fitting cylindrical part  15   a   1  of the lid  15  and the housing  24  before opening and after closing. 
     In the housing  24 , as a passage communicating between the inside of the housing  24  and the concentrate chamber Sc inside the inner container  14 , a vertical hole  24   c  passing through the bottom plate  24   b  of the housing  24  vertically is provided. The planar shape of the vertical hole  24   c  may be, for example, a fan shape. It is preferable to provide a plurality of vertical holes  24   c . Accordingly, even if one of the vertical holes  24   c  is clogged, other vertical holes  24  can communicate. 
     As shown in  FIG. 3A , the height direction position of the bottom surface  27   a  of the seal opening part  27  is a position where it abuts to the pressure receiving part  15   d   1  when screwing the cap  20  to the male screw  13   e  of the outer container  13  approximately one time to two times. Therefore, at the time of delivery or at the time of distribution, the closing part  15   d  is not broken by loosely screwing the cap  20 , and the discharge member  12  and the double pressurized container  11  can be temporarily connected while keeping the sealing state. 
     The valve holder  18  is provided with a valve holding part  18   a , an annular rubber retainer  18   b  extending to the inner side from the upper end of the valve holding part  18   a , and a flange  18   c  expanding to the outside, and a hole  18   d  passing through the stem  22  to the center of the rubber retainer  18   b  is formed. The valve holder  18  is lightly fitted to the cap  20 . Specifically, the outer diameter of the flange  18   c  and the diameter of the inner peripheral surface of the cap  20  are almost equal in size, and it is configured to make slight friction. Therefore, even if the user holds only the cap  20 , the valve holder  18  does not come off from the cap  20 . On the other hand, when the user removes the valve holder  18  from the cap  20 , it is easily removed. Note that the valve holder  18  may not be fitted to the cap  20 . 
     When the user uses the purchased discharge device  10 , first, the cap  20  screws into the male screw  13   e  of the outer container. With this, the entire cap  20  and the valve  21  are lowered, and the bottom surface  27   a  of the seal opening part  27  pushes down the closing part  15   d . With this, the thin part  15   f  is broken, and the closing part  15   d  tears off from the fitting cylindrical part  15   a   1 , and it is separated from the bottom part  15   c  and it falls off. And, the seal opening part  27  breaks through the bottom part  15   c  of the fitting cylindrical part  15   a   1 , and the inside of the housing  24  and the concentrate chamber Sc which is inside the inner container  14  are connected (see  FIG. 3B ). The fallen closing part  14   d  is fallen into the bottom of the inner container  14 . The lower end of the seal opening part  27  is inserted inside the inner container  14  from the through hole H made by breaking through the bottom part  15   c . In this case, the engaging projection  27   e  is also inserted inside the inner container  14  from the through hole H. Note that in order not to seal the through hole H by the engaging projection  27   e , the engaging projection  27   e  is positioned lower side than the lower surface of the bottom part  15   c , and a space is formed between the engaging projection  27   e  and the bottom part  15   c.    
     Note that the cap  20  is screwed into the outer container  13 , so that the fall amount of the valve  21  with respect to the operation amount of the cap  20  is small. Therefore, the bottom surface  27   a  of the seal opening part  27  gradually pushes the pressure receiving part  15   d   1  of the closing part  15   d . The lid  15  is made of synthetic resin, so that when gradually pushing, the closing part  15   d  easily stretches and is not breakable by its extensibility. However, in this embodiment, the closing part  15   d  is surrounded by the annular thin part  15   f , and the pressure receiving part  15   d   1  projects, so that the stress concentration to the thin part  15   f  increases and it can be smoothly broken. Further, the bottom surface  27   a  of the seal opening part  27  is flat, so that it is hard to be deformed by the opening operation, and the discharge member  12  can be repeatedly used. 
     The closing part  15   d  is provided on the center axis of the lid  15  and has almost circular-shaped pressure receiving part  15   d   1 , which is thickened to the upper part, and further, abuts on the circular-shaped bottom surface  27   a  of the seal opening part  27 , so that when applying the pressure by the bottom surface  27   a , the closing part  15   d  is pushed straight down, and it is broken along the thin part  15   f , and the broken closing part  15   d  is fallen off, and it is fallen into the bottom of the inner container  14 . However, the pressure receiving part  15   d   1  or the bottom surface  27   a  of the seal opening part  27  is inclined, and the thin part  15   f  may be broken in the order from one side to the other side. Further, it is acceptable that the closing part  15   d  may not be fallen off and connected via the thin part  15   f , etc. as long as the engaging projection  27   e  of the seal opening part is engaged with the broken edge H 1 . 
     When breaking the closing part  15   d , there is a case in which the concentrate C is leaked from the space between the inner periphery of the bottom part  15   c  and the outer periphery of the seal opening part  27 . However, the space between the fitting cylindrical part  15   a   1  and the housing  24  is sealed by the seal member  28 , so that the concentrate C is stored inside the fitting cylindrical part  15   a  and it does not leak outside. Further, the reaction force at the time of breaking and the internal pressure after breaking are functioned as to push up the housing  24 , but the cap  20  and the outer container  13  are screwed, and the upper bottom  20   a  of the cap  20  and the valve holder  18  are functioned in a double support manner, so that jumping out the discharge member  12  is suppressed. In this state, it can be said that the valve  21  is mounted by the cap  20 . Further, the deformation of the upper bottom  20   a  of the cap  20  is suppressed. 
     After mounting the discharge member  12 , the user presses the operation button  23  mounted in the stem  22 , the stem  22  is lowered and the stem rubber  26  is bent, so as to open the stem hole. Since the concentrate C inside the concentrate chamber Sc is pressurized by the pressurizing agent P via the inner container  14 , it is discharged outside via the seal opening part  27 , the housing  24 , the stem  22 , and the operation button  23 . When releasing a finger from the operation button  23 , the stem  22  is raised, and the discharging stops. The pressurizing agent chamber Sp in which the pressurizing agent P is filled is closed by the lid  15 , and it does not communicate with outside or the concentrate chamber Sc, so that the pressurizing agent P is not leaked outside by the discharge operation. 
     Further, even if the cap  20  is removed from the outer container  13 , the engaging projection  27   e  of the valve  21  is engaged with the edge H 1  of the through hole H of the lid  15 , so that the valve  21  does not come off from the pressurized product  11   a . If strong pull-out force is applied to the valve  21 , or if the valve  21  is intentionally removed from the pressurized product  11   a , the seal opening part  27  is removed from the housing  24 , and the state of sealing the through hole H maintains (see  FIG. 3C ). In this state, it can be said that the seal opening part  27  maintains the mounting state of the valve  21  and the pressurized product  11   a . That is, the discharge device  10  of the present invention is provided with an engaging means E maintaining the mounting state to the pressurized product  11   a  of the valve  21  against the pressure of the pressurizing agent P. Further, in this state, it can be said that the engaging means E maintaining the mounting state to the pressurized product  11   a  of the valve  21  against the pressure of the pressurizing agent P is configured by the engaging projection  27   e  of the valve  21  and the edge H 1  of the through hole H of the pressurized product  11   a.    
     In this way, the discharge device  10  of the present invention is provided with, in addition to the mounting of the valve  21  by the cap  20 , a maintaining mechanism K (engaging means E) maintaining the mounting state of the valve  21  to the pressurized product  11   a , so that in comparison with the case in which the valve  21  is fixed to the pressurized product  11   a  by only the cap  20 , the unintentional removal of the valve  21  can be effectively suppressed. 
     After discharging the total quantity of the concentrate C, rotating the cap  20 , the discharge member  12  is removed from the pressurized product  11   a . And, the removed the discharge member  12  is mounted to a new pressurized product  11   a . Note that since the seal opening part  27  remains in the pressurized product  11   a  side, when the discharge member  12  is mounted to the new pressurized product  11   a , a new seal opening part  27  is mounted to the housing  24  or the valve  21  itself is replaced to a new one. 
     Next, another embodiment of the discharge device will be described with reference to  FIGS. 4A and 4B . In the discharge device  30  of  FIG. 4A , in addition to the valve  121 , an engaging projection is also provided in the pressurized product  11   a . Specifically, the engaging projections  15   h  are provided in the radial inner direction from the inner peripheral surface of the seal part  15   a  of the lid  115 . The engaging projections  15   h  are not continuously provided in the circumferential direction, and a space  15   i  is formed between the engaging projections  15   h ,  15   h . In this state, the space  15   i  is provided adjacent to the engaging projections  15   h . The width of the space  15   i  is wider than an engaging projection  18   e  which will be described later. Further, it is preferable to provide the engaging projections  15   h ,  15   h  at equal intervals each other (see  FIG. 5B ). 
     The engaging projections  18   e  of the discharge member  112  are provided in radial outward direction from the outer peripheral surface of the valve holding part  18   a  of the valve holder  118 . Further, the engaging projections  18   e  are not continuously provided, and a space  18   f  is formed between the engaging projections  18   e ,  18   e . In this state, the space  18   f  is provided adjacent to the engaging projections  18   e . The width of the space  18   f  is wider than the engaging projection  15   h  of the lid  15 . Further, it is preferable to provide the engaging projections  18   e ,  18   e  at equal intervals each other. Further, it is preferable that the pitch is equivalent to the space  15   i  of the lid  15  (see  FIG. 5A ). 
     The pressurized product  11   a  and the valve  121  of the aforementioned configuration are assembled as follows. First, the valve  121  is removed from the discharge member  112 . The outer diameter of the flange  18   c  of the valve  121  is smaller than the diameter (inner diameter) of the inner peripheral surface of the cap  120 , so that the valve  121  can be easily removed. Next, the valve  121  is inserted inside the seal part  15   a  of the lid  115 . In this case, the engaging projection  18   e  of the valve holder  118  is inserted inside the seal part  15   a  through the space  15   i  between the engaging projections  15   h ,  15   h  of the lid  15  (see  51  of  FIG. 6 ). And, the valve  121  is pushed in, and the upper end of the engaging projections  18   e  of the valve holder  118  is positioned lower than the lower end of the engaging projections  15   h  of the lid  15  (see S 2  of  FIG. 6 ), and the engaging projections  15   h ,  18   e  are engaged each other by rotating the valve  121  around the axis (see S 3  of  FIG. 6 ). In this state, the seal opening part  127  shown in  FIG. 4B  breaks through the closing part  15   d . However, since the engaging projections  15   h ,  18   e  are engaged with each other, the valve  121  does not come off from the pressurized product  11   a , and the concentrate C does not leak. After that, the cap  120  is covered so as to cover the valve  121 , and the assembly is completed by screwing to the outer container  13 . 
     In the discharge device  30  of the aforementioned configuration, even if the cap  120  is removed during its use, the engaging projections  18   e  of the valve  121  are engaged with the engaging projections  15   h  of the lid  15 , so that the valve  121  does not naturally come off from the pressurized product  11   a . That is, both of the valve  121  and the pressurized product  11   a  are provided with the engaging means E to maintain the state of mounting to the pressurized product  11   a  of the valve  121  against the pressure of the pressurizing agent P. Further, in this state, the engaging means E maintaining the state of mounting to the pressurized product  11   a  of the valve  121  against the pressure of the pressurizing agent P is configured by the engaging projections  18   e  of the valve  121  and the engaging projections  15   h  of the pressurized product  11   a.    
     With this, also, in the discharge device  30  of the present invention, in addition to the mounting of the valve  121  by the cap  120 , the maintaining mechanism K (engaging means E) for maintaining the mounting state of the valve  121  to the pressurized product  11   a  is provided, so that in comparison with the case in which the valve  121  is fixed to the pressurized product  11   a  by only the cap  120 , the unintentional removal of the valve  121  can be effectively suppressed. 
     Note that the outer diameter of the flange part  18   c  of the valve holder  118  is made smaller than the inner diameter of the cap  120 , so that the unintentional rotation (corotating) of the valve  121  due to the attachment and detachment of the cap  120  is suppressed, and the shifting of the position relation of the engaging projections  15   h ,  18   e  can be prevented. Further, in order not to unintentionally release the engagement state of the engaging projections  15   h ,  18   e  due to the attachment and detachment of the cap  120 , the engagement maintaining means may be provided. The engagement maintaining means is, for example, projections  15   j  or recessed parts  15   k  provided on the lower surface (the surface abutting to the engaging projections  18   e  of the valve  121 ) of the engaging projections  15   h  of the pressurized product  11   a  (see dashed line of  FIG. 6 ). In the case in which the engaging projections  18   e  of the valve  121  is wider than the engaging projections  15   h  of the pressurized product  11   a , a projection or a recessed part is provided in the engaging projections  18   e  of the valve  121 . Further, the surface on which the engaging projections  15   h ,  18   e  are contacted each other may be a rough surface, so that it may be hard to be slippery. 
     After discharging the total quantity of the concentrate C, rotating the cap  120 , the discharge member  112  is removed from the pressurized product  11   a . In this case, the valve  121  is rotated around the axis, and the engagement of the engaging projections  15   h ,  18   e  is released (engagement and disengagement) by positioning the engaging projections  18  of the valve  121  in the space  15   i  between the engaging projections  15   h ,  15   h  of the lid  15 . Note that in this state, it can be said that the engaging projections  15   h  of the lid  115  are positioned at the space  18   f  between the engaging projections  18   e ,  18   e  of the valve  121 , and the engagement of the engaging projections  15   h ,  18   e  is released each other. With this, when the space  15   i  ( 180  between the engaging projections  15   h ,  15   h  ( 18   e ,  18   e ) is functioned as the engagement releasing part R for releasing the engagement between the engaging projections  18   e  ( 15   h ), the removal of the valve  121  is facilitated. The removed discharge member  112  is properly cleaned, and is mounted to a new pressurized product  11   a.    
     By the way, as shown in  FIG. 7 , the discharge member  112  is provided with a lever type operation mechanism  40  for operating the stem  22 . The operation mechanism  40  has a cover part  42  which extends downward from the surrounding wall of the cap  120  and covers the shoulder part of the container body  16 , and a supporting wall  43  which extends upward from the cap  120 . And, the rear end of the operation lever  44  is rotatably connected to the upper rear end of the supporting wall  43  via a hinge or a pin. 
     A spray nozzle  46  is mounted to the upper part of the operation lever  44 . The spray nozzle  46  is mounted to the front end of the L-shaped passage member  47 , and the lower end of the passage member  47  is fitted to the stem  22 . In the operation mechanism  40 , the operation lever  44  is rotated to the lower side around the rear end by holding the cover part  42  or the container body  16  and performing a pulling-operation of the operation lever  44  by the user, so that the discharging is performed by opening the valve  121  via the passage member  47 . Such lever operation type operation mechanism  40  is used for, mainly, space sprays such as insect repellent agents or deodorant aromatic air freshener, etc. Such lever type operation mechanism  40  can be used for the pressurized product  11   a  of  FIG. 1A . 
     Note that in the present embodiment, the diameter of the seal opening part  127  is smaller than the pressure receiving part  15   d   1  or the closing part  15   d . Further, it is slightly smaller than the diameter of the range surrounded by the thin part  15   f . In this way, at the time of breaking, the bottom surface  27   a  of the seal opening part  127  does not block the pushing of the pressure receiving part  15   d   1  by abutting to the outer periphery part further than the thin part  15   f  of the bottom part  15   c . Further, after breaking, the bottom surface  27   a  of the seal opening part  127  can be projected downward further than the opening formed by opening the bottom surface  27   a  of the seal opening part  127 , so as to facilitate the secure of the passage of the concentrate C (see  FIG. 4B ). 
     A plurality of reinforcing plates  27   d  is radially provided between the columnar-shaped seal opening part  127  and the lower surface  24   a  of the housing  124 . The number of the reinforcing plates  27   d  is preferably three to five. The reinforcing plates  27  are approximately triangular shape in the side view, and its lower end does not reach the lower end of the seal opening part  127 , so that the vicinity of the lower end of the seal opening part  127  is still the columnar shape. 
     Regarding another configuration of the discharge device  30  of the present embodiment, it is similar to the discharge device  10  of  FIG. 1 . Accordingly, the same reference numerals are used for the same parts, and the descriptions thereof will be omitted. 
     Next, another embodiment of the discharge device will be described with reference to  FIGS. 8A and 8B . In the discharge device  50  of  FIG. 8A , the engaging projection  18   g  of the valve  221  is a screw shape (spiral shape). The direction of screw is the same direction as the male screw  13   e  of the outer container  13 , and it is, for example, right-hand screw. However, it may be the opposite direction. In this case, the corotation of the cap  120  and the valve  221  is surely prevented. The engaging projections  15   h  of the lid  215  are arranged in a manner of providing only one or in a manner of scattering in order to screw with the engaging projections  18   g  of the valve  221 . Note that the engaging projections  15   h  of the lid  215  may also be a screw shape. 
     In the case in which the discharge device  50  of the aforementioned configuration is assembled, the valve  221  is inserted inside the seal part  15   a  of the lid  215 , and the engaging projections  15   h  of the lid  215  rotate the valve holder  218  in a screwing manner with the engaging projections  18   g  of the valve  221 . When the flange  18   c  of the valve holder  218  is rotated until abutting on the top surface of the lid  215 , the seal opening part  127  breaks through the closing part  15   d , and it becomes the state in which the concentrate C can be sprayed. 
     Further, in the discharge device  50  of the embodiment, the outer peripheral surface of the flange  18   c  of the valve holder  218  does not abut on the inner peripheral surface of the cap  120 , so that even if the cap  120  is removed halfway, the valve holder  218  does not corotate. When the concentrate C inside the inner container  14  becomes empty and the valve  221  is removed, by rotating in the opposite direction from the time of screwing and mounting the valve holder  218 , the engagement of the engaging projections  15   h  of the lid  215  and the engaging projections  18   g  of the valve  221  can be released. 
     In this embodiment, the engaging projections  15   h  of the lid  215  and the engaging projections  18   g  of the valve  221  becomes the engaging means E, so as to be able to maintain the state of being mounted to the pressurized product  11   a  of the valve  221  against the pressure of the pressurizing agent P. Further, since the engaging projections  18   g  of the valve  221  are a screw shape, by only rotating the valve holder  218  in the opposite direction, the valve  221  and the pressurized product  11   a  can be easily disengaged. Accordingly, the space  18   h  between the screw threads of the engaging projections  18   g  as a screw shape can release the engagement with the engaging projections  15   h  by rotating the valve holder  218  in the opposite direction so as to be functioned as the engagement releasing part R. The aforementioned effect is the same even when the engaging projections  15   h  of the lid  215  are a screw shape. 
     Note that a screw-shaped engaging projection may be provided in only one of the valve  221  (valve holder  218 ) or the pressurized product  11   a  (lid  215 ), and when screwing in, the screw groove may be provided in the other one. In this case, it is not required to preliminarily provide the engaging projection in the other side. 
     With this, in the discharge device  50  of the present invention, in addition to the mounting of the valve  221  by the cap  120 , the maintaining mechanism K (engaging means E) in order to maintain the state of being mounted to the pressurized product  11   a  of the valve  221  is provided, so that in comparison with the case in which the valve  221  is fixed to the pressurized product  11   a  by the cap  120 , the unintentional removal of the valve  221  can be effectively suppressed. Further, the discharge member  212  can be reused. 
     Regarding another configuration of the discharge device  50  of the present embodiment, it is similar to the discharge device  10  of  FIG. 4 . Accordingly, the same reference numerals are used for the same parts, and the descriptions thereof will be omitted. 
     Next, another embodiment of the discharge device will be described with reference to  FIGS. 9A and 9B . In the discharge device  60  of  FIG. 9A , the cap  320  and the operation mechanism  340  are provided as a separate body. The operation mechanism  340  is provided with an inner cylindrical part  41  positioned at outer periphery of the cap  320  as to cover the cap  320 , and a cover part  42  extended downward (body part  13   b  side of the outer container  13 ) from the inner cylindrical part  41 . 
     The inner cylindrical part  41  is a substantially cylindrical shape, and as shown in  FIG. 9B , an engaging projection  41   a  is provided on the inner periphery surface. The engaging projection  41   a  is preferably provided at the lower end (body part  13   b  side) of the inner cylindrical part  41 . Further, it is preferably provided in a plural number in an equal interval. On the outer peripheral surface of the cap  320 , grooves  20   e  engaging with the engaging projections  41   a  are provided. The grooves  20   e  are provided substantially in parallel to the axial direction of the cap  320 . It is preferable that the arrangement interval is the same as or more densely than the engaging projections  41   a.    
     The cover part  42  is a substantially cylindrical shape, and the upper end is connected to the outer periphery of the cylindrical part  41 , and the lower end is externally fitted to the body part  13   b  of the outer container  13  of the double pressurized container  11 . The inner diameter of the lower end of the cover part  42  is almost same or slightly smaller than the outer diameter of the body part  13   b  before filling the concentrate C or the pressurizing agent P. 
     By the way, the body part  13   b  of the outer container  13  is inflated in a manner of enlarging the outer diameter in the state in which the concentrate C and the pressurizing agent P are filled. Therefore, when the cover part  42  is externally fitted to the body part  13   b , the cover part  42  is enlarged in diameter. And, the inner cylindrical part  41  integrated with the cover part  42  is enlarged in diameter. In this state, as shown in the left diagram of  FIG. 9B , the engaging projection  41   a  is not engaged with the groove  20   e . Accordingly, even if the operation mechanism  340  is rotated around the axis, the cap  320  cannot be rotated. Therefore, the cap  320  cannot be removed from the pressurized product  11   a , and the mounting state of the valve  321  to the pressurized product  11   a  is maintained. 
     By discharging the concentrate C, when the pressure inside the double pressurized container  11  is reduced, the outer container  13  contracts, and the outer diameter of the body part  13   b  becomes small (see double-dashed line in  FIG. 9A ). Then, the cover part  42  is contracted, and the inner diameter of the inner cylindrical part  41  integrated with the cover part  42  becomes small. As a result, the engaging projection  41   a  of the inner cylindrical part  41  is inserted into the groove of the cap  320  (see the right diagram of  FIG. 9B ). That is, the cap  320  and the inner cylindrical part  41  are firstly engaged in this state. And, when the operation mechanism  340  is rotated around the axis, the cap  320  can be also rotated. Therefore, the discharge member  312  is removed from the pressurized product  11   a  and can be reused. Note that as a timing of engaging the engaging projection  41   a  to the groove  20   e , preferably, it is after the discharge of the concentrate C is completed. 
     With this, in the discharge device  60  of the present invention, by the inner cylindrical part  41  in which the inner diameter is reduced by interlocking with the contraction of the double pressurized container  11  due to the reduction of the internal pressure, the maintaining mechanism K in order to maintain the mounting state of the valve  321  to the pressurized product  11   a  is formed. More specifically, by the cover part  42  externally fitted to the double pressurized container  11  and contracted due to the contraction of the double pressurized container  11  due to the reduction of the internal pressure, and the inner cylindrical part  41  integrated with the cover part  42  and contracted due to the contraction of the cover part  42 , the maintaining mechanism K is formed. 
     Regarding another configuration of the discharge device  60  of the present embodiment, it is similar to the discharge device  30  of  FIG. 7 . Accordingly, the same reference numerals are used for the same parts, and the descriptions thereof will be omitted. Note that the valve  321  is the same as  FIG. 4 . However, the one shown in  FIG. 2  or the one shown  FIG. 8  may be used. Further, it may not be provided with the engaging means E. Further, an engaging projection may be provided on the outer peripheral surface of the cap  320 , and a groove may be provided on the inner peripheral surface of the inner cylindrical part  41 . Further, the engaging projection may be provided on each of the outer peripheral surface of the cap  320  and the inner peripheral surface of the inner cylindrical part  41 , and the engaging projections may be engaged each other. Further, it is not limited to the engaging projection  41   a , and the inner peripheral surface of the inner cylindrical part  41  or the outer peripheral surface of the cap  320  may be made as a rough surface, or a material with high friction coefficient such as a rubber, etc. may be interposed. 
     In the double pressurized container  11  shown in  FIG. 10 , the shape of the lid  415  is different from the aforementioned another double pressurized container  11 . Specifically, a substantially cylindrical-shaped seal part  15   a  extends to the lower side, and a fitting cylindrical part  15   a   1  is concentrically provided inside the seal part  15   a . The fitting cylindrical part  15   a   1  is raised upward from the central part of the bottom part of the seal part  15   a , and it opens at the upper end. And, the upper part of the seal part  15   a  is substantially cylindrical shape, and the inner surface of the lower part  15   a   3  is a tapered-shape which is tapered toward the lower side. However, it may be a cylindrical shape from the upper part to the lower part. The outer surface of the lower part  15   a   3  is a tapered-shape which is tapered toward the lower side, but the lower side is a cylindrical shape. Hereinafter, the cylindrical-shaped part is called as a cylindrical part  15   a   2 . 
     The lid  415  is provided with the fitting cylindrical part  15   a   1  inside the seal part  15   a , and the lower end  15   a   4  of the aforementioned tapered-shape lower part  15   a   3  and the lower end of the lower part cylindrical part  15   a   5  extending downward from the fitting cylindrical part  15   a   1  are connected by a coupling part  15   a   6 . Further, the closing part  15   d  is provided at the bottom part  15   c  closing the part slightly higher than the lower end of the lower part cylindrical part  15   a   5 . Therefore, when the ultrasonic wave welding is performed to the upper surface of the lid  415  by pressing a horn, the vibration of the horn easily flows to the concentrate C side from the lower end  15   a   4  through the seal part  15   a . Further, since the closing part  15   d  is provided slightly higher than the coupling part  15   a   6 , the vibration is hardly transmitted to the closing par  15   d . Accordingly, the melting or the penetration, etc. of the weakening line  15   f  is prevented. 
     Further, in the lid  415 , at the upper part of the fitting cylindrical part  15   a   1 , a recessed groove  15   n  extending in a vertical direction is provided. The upper end of the recessed groove  15   n  reaches the upper part of the fitting cylindrical part  15   a   1 . On the other hand, the lower end of the recessed groove  15   n  does not reach the bottom part  15   c . That is, the recessed groove  15   n  is not provided at the lower part of the fitting cylindrical part  15   a   1 . This is because when the closing part  15   d  is opened by the valve  21 , it already becomes the state in which a liquid-tight sealing between the fitting cylindrical part  15   a   1  and the valve  21  is formed by the seal member  28  (see  FIG. 11A ). For example, the lower end of the recessed groove  15   n  is positioned higher (downstream) than the position of the seal member  28  in the state in which the valve  21  firstly abuts to the closing part  15   d . The number of the recessed groove  15   n  may be one or may be more than two. 
     By the way, the lid  15  is provided with a movable lid  81 . The movable lid  81  is a cup-shape formed by a bottom part  82 , which is the same shape as the cylindrical part  15   a   2  of the seal part  15   a , and the side wall part  83  raised from the bottom part  82 . And, it is externally fitted to the cylindrical part  15   a   2  in a freely sliding manner. At the side wall part  83  of the movable lid  81 , a communication passage (slit)  73   a  is provided. This slit is provided toward the lower side from the upper end of the side wall part  83 , but it does not reach the bottom part  82 , and the side wall part  83  continues in the circumferential direction in the vicinity of the bottom part  82 . Note that the communication passage  83   a  is not limited to the slit, and it may be a hole passing through the side wall part  83 . 
     The valve holder  18  of the present discharge device  70  is similar to the one shown in  FIG. 4A  except the engaging projections  18   e  are not provided. The cap  20 , the valve  21 , and the container body  16  are similar to the one shown in  FIG. 4A . 
     In the discharge device  70  of the aforementioned configuration, similar to the aforementioned other discharge devices  10  to  60 , the pressurized product  11   a  is opened by inserting the cap  20  to the male screw  13   e  of the outer container  13 . In this case, the closing part  15   d  is pushed in the seal opening part  27 , but as shown in  FIG. 11A , the movable lid  81  is downwardly moved by pushing the movable lid  81  by the pushed-in closing part  15   d . The thin part  15   f  is a C-shape, and the coupling part (part other than the thin part  15   f )  15   g  becomes a fulcrum, so that the movable range (range) of the closing part  15   d  falls within the range. The length of the fitting part of the side wall part  83  and the cylindrical part  15   a   2  is longer than the movable range of the closing part  15   d , so that the movable lid  81  does not fall off from the lid  15 . Note that the movable lid  81  may be directly pushed down by the seal opening part  27 . In the side wall part  83 , the communication passage  83   a  is provided, so that when the movable lid  81  is moved downwardly, the inside of the inner container  14  and the inside of the movable lid  81  are connected via the communication passage  83   a  (see the arrow in  FIG. 11A ). Accordingly, when the user pushes down the stem  22 , the concentrate C is discharged from the stem  22 . 
     By the way, the seal member  28  is positioned lower (upstream) than the recessed groove  15   n  in the state in which the cap  20  is completely mounted to the pressurized product  11   a , that is, before loosening (start removing) the cap  20 . Therefore, the inside of the container  14  and the outside (outside air) do not communicate through the space between the fitting cylindrical part  15   a   1  and the valve  21 . On the other hand, when loosening (start removing) the cap  20 , the entire valve  21  is moved toward the upper side, and the seal member  28  is positioned at the recessed groove  15   n  before removing the cap  20  from the pressurized product  11   a  (in the state in which the cap  20  is still screwed in the male screw  13   e ), and the inside of the inner container  14  and the outside (outside air) become the communicating state (see the arrow in  FIG. 11B ). Then, the pressure difference between the inside of the inner container  14  and the inside of the movable lid  81  occurs. Specifically, the pressure inside the movable lid  81  becomes smaller than the pressure inside the inner container  14 , so that the movable lid  81  is sucked toward the valve  21  (upper side). In other words, the movable lid  81  is pushed upward by the pressure inside the inner container  14 . As a result, the communication passage  83   a  is sealed by the cylindrical part  15   a   2 , and the communicating state between the inside of the inner container  14  and the outside (outside air) is eliminated. Note that in this case, the seal opening part  27  is already separated from the closing part  15   d , and the seal opening part  27  does not disturb the sliding of the movable lid  81 . 
     With this, in the discharge device  70 , the movable lid  81  covering the closing part  15   d  from the inner container  14  side is provided, and the movable lid  81  maintains the open state by mounting the discharge member  12 , and it becomes the close state by removing the discharge member  12 , so that in the state in which the concentrate C remains inside the inner container  14 , even if the cap  20  is loosened or even if the cap  20  is removed, the leakage of the concentrate C can be suppressed. Note that when loosened or removed cap  20  is mounted again, the movable lid  81  is pushed in to the inner container  14  side again by the seal opening part  27 , it is possible to discharge the concentrate C from the stem  22 . 
     The neck part  14   d  of the inner container  14  of the double pressurized container  11  shown in  FIG. 12A  is shaped as to almost tightly contact with the outer peripheral surface of the seal part  15   a , and it is provided with a cylindrical-shaped upper part  14   d   1 , a tapered part  14   d   2  which is tapered toward the lower side than the upper part  14   d   1 , and an enlarged diameter part  14   d   4  which gradually enlarge the diameter from the lower end of tapered part  14   d   2 . The lower end of the enlarged diameter part  14   d   4  continues to the shoulder part  14   c . That is, the tapered part  14   d   2  of the neck part  14   d  of the inner container  14 , the enlarged diameter part  14   d   4 , and the upper part of the shoulder part  14   c  form the narrowed part. This narrowed part tightly contacts with the lower part  15   a   3  of the lid  415 . Therefore, when the concentrate C is filled to the inner container  14 , the gas-phase part (head space) becomes small. Note that the lid  415  is not provided with the cylindrical part  15   a   2 . 
     The movable lid  91  is film-like. The thickness is, for example, 0.2 to 2 mm. The material is preferably the same material as, for example, the lid  415 . However, it may be a different material. This movable lid  91  is welded to the lower end of the lid  415  as shown in  FIG. 12B . However, it may be bonded. A notch  15   q  is provided at the lower end of the lid  415 . The notch  15   q  is provided in approximately C-shape in the state of looking up the lid  415  from the lower side. Further, it is provided to avoid the outer edge of the lid  415 . Therefore, the part in which the notch  15   q  is not provided continues annularly. The part in which the notch  15   q  is not provided is defined as an annular wall  15   r , and only a part of the annular wall  15   r  is made wide toward the center of the circle. The wide portion  15   s  and the coupling part  15   g  to be a fulcrum at the time of the rotation of the closing part  15   d  are provided and aligned on the same straight line viewed from the center of the lid  415 . The movable lid  91  is welded both of the wide portion  15   s  and the narrow portion  15   t  which is narrower than the wide portion  15   s.    
     In the discharge device  80  of the aforementioned configuration, similar to the aforementioned other discharge devices  10  to  70 , the pressurized product  11   a  is opened by screwing the cap  20  to the male screw  13   e  of the outer container  13 . In this case, the closing part  15   d  is pushed in to the seal opening part  27 , but as shown in  FIG. 13A , the movable lid  91  is pushed down by the pushed-in closing part  15   d . Since the coupling part  15   g  and the wide portion  15   s  are aligned on the same straight line (same direction viewed from the center of the lid  415 ), mainly, the pushing-down force is applied to the narrow portion  15   t , not the wide portion  15   s . Further, in the narrow portion  15   t , the small portion of the welding area is easily separated in comparison with the wide portion  15   s . Therefore, the movable lid  91  is gradually separated from the narrow portion  15   t , and the inside of the inner container  14  and the inside of the movable lid  91  are communicated (see the arrow of  FIG. 13A ). In this state, when the user pushes down the stem  22 , the concentrate C is discharged from the stem  22 . Note that the wide portion  15   s  is close to the coupling part  15   g , and the force is almost not received, so that the movable lid  91  maintains the welding with at least the wide portion  15   s , and it does not fall down from the lid  415 . 
     In the discharge device  80 , when loosening (start removing) the cap  20 , the entire valve  21  is moved upward, and the seal member  28  is positioned at the recessed groove  15   n  before the cap  20  is removed from the pressurized product  11   a  (in the state in which the cap  20  is still screwed in the male screw  13   e ), and the inside of the inner container  14  and the outside (outside air) becomes the communicating state (see the arrow in  FIG. 13B ). Then, the movable lid  91  is sucked toward the valve  21  (upper side). In other words, the movable lid  91  is pushed upward by the pressure inside the inner container  14 . As a result, the movable lid  91  abuts to the lower end of the lid  415 . Specifically, the outer peripheral surface of the movable lid  91  abuts to the inner side of the annular wall  15   r , and the communicating state between the inside of the inner container  14  and the outside (outside air) is eliminated. Note that in this case, the seal opening part  27  is already separated from the closing part  15   d , and the seal opening part  27  does not disturb the sliding of the movable lid  91 . 
     With this, in this discharge device  80 , the movable lid  91  covering the closing part  15   d  from the inner container  14  side is provided, and the movable lid  91  maintains the open state by mounting the discharge member  12 , and it becomes the close state by removing the discharge member  12 , so that even if the cap  20  is loosened or the cap  20  is removed at the state in which the concentrate C remains inside the inner container  14 , the leakage of the concentrate C can be suppressed. Note that when loosened or removed cap  20  is mounted again, the movable lid  91  is pushed in to the inner container  14  side again by the seal opening part  27 , it is possible to discharge the concentrate C from the stem  22 . 
     Regarding another configuration, it is similar to the discharge device of  FIG. 11 , and therefore, the same reference numerals are used for the same parts, and the descriptions thereof will be omitted. 
     In the discharge device  90  shown in  FIG. 14 , the engaging projections  513   a  are provided on the outer peripheral surface of the neck part  13  of the outer container  513 , and the engaging claw  520   a  engaging with the engaging projections  513   a  is provided on the inner peripheral surface of the cap  520 . The engaging projections  513   a  are the engaging part, so that its lower surface engages with the engaging claw  520   a . The lower surface forms a recessed part  513   b  which is recessed toward the upper side. In other words, the guide part  513   c  projected downward is provided at both end portions in the right and left direction, so that the engagement state is not released by only moving the engaging claw  520   a  in the right and left direction. The upper surface of the engaging projection  513   a  is formed as a roof-shape as a projection at the central part. A plurality of engaging projections  513   a  is provided in the circumferential direction of the neck part  13   d . The width of the engaging claw  520   a  is defined as to be inserted into the recessed part  513   b  of the engaging projection  513   a . Further, a plurality of the engaging claws  520   a  is provided in the same interval as the engaging projections  513   a.    
     When the pressurized product  11   a  is opened, the cap  520  is pushed down toward the lower side in the mounting state of the valve  21  to the cap  520 . In this case, the engaging claws  520   a  are preferably positioned at the space between the engaging projections  513   a . When the  520  is completely pushed down, the closing part  15   d  is pushed by the seal opening part  27 , and the pressurized product  11   a  is opened (see  FIG. 11A ). And, when the engaging claws  520   a  are positioned lower than the engaging projections  513   a , the engaging claws  520   a  and the engaging projections  513   a  are engaged by rotating the cap  520  in the horizontal direction. After the pressurized product  11   a  is opened, the pressure of the pressurizing agent P is continuously applied to the cap  520  via the valve  21 , so that it becomes the state in which the engaging claws  520   a  are pushed to the bottom  513   d  of the recessed part  513   b , and even if the user tries to release the engagement between the engaging projections  513   a  and the engaging claws  520   a , it cannot be easily released. Therefore, the removal of the cap  520  from the pressurized product  11   a  in the state in which the concentrate C remains can be suppressed. Note that in the case in which the engaging projections  513   a  are provided in the cap  520  and the engaging claws  520   a  are provided in the outer container  513 , the same effect is obtained. That is, in the case in which the recessed parts  513   b  are provided in any one of the cap  520  and the double pressurized container  511 , and the projecting parts ( 520   a ) inserted inside the recessed parts  513   b  are provided in the other one, the same effect is obtained. 
     In the discharge device  90  of the aforementioned configuration, since the pressure of the pressurizing agent P is reduced when the concentrate C is entirely discharged, the cap  520  is easily removed. After use, the cap  520 , the valve holder  18 , and the valve  21  are removed, and it is mounted to a separate new pressurized product. 
     Regarding another configuration, it is similar to the discharge device of  FIG. 11 , and therefore, the same reference numerals are used for the same parts, and the descriptions thereof will be omitted. 
     In the pressurizing device  10  shown in  FIGS. 15 and 16 , on the inner peripheral surface of the upper part of the seal part  15   a , the first projection (projection)  15   m  projecting in a radially inward direction is provided. The first projection  15   m  may be only one, or may be more than two in the circumferential direction. Further, it may continue in the circumferential direction. 
     It is preferable that the inner peripheral surface of the fitting cylindrical part  15   a   1  is basically a smooth cylindrical surface in order not to leak the concentrate C by tightly contacting with the seal member  28  of the valve  21  when opening the closing part  15   d . It may be a tapered shape in which the diameter is reduced toward the lower side. However, in the upper part of the fitting cylindrical part  15   a   1 , a recessed groove  15   n  extending in the vertical direction is provided. The upper end of the recessed groove  15  reaches the upper part of the seal part  15   a , and communicates with the upper part of the seal part  15   a . On the other hand, the lower end of the recessed groove  15   n  does not reach the bottom part  15   c , and it stops at the position approximately ½ to ⅓ of the length of the vertical direction of the fitting cylindrical part  15   a   1 . That is, the recessed groove  15   n  is not provided in the lower part of the fitting cylindrical part  15   a   1 . This is because when the closing part  15   d  is opened by the valve  21 , it already becomes the state in which the liquid-tight seal between the fitting cylindrical part  15   a   1  and the valve  21  is formed by the seal member  28 . For example, the lower end of the recessed groove  15   n  may be positioned further upward (downstream) than the position of the seal member  28  in the state that the valve  21  firstly abuts to the closing part  15   d . The number of the recessed groove  15   n  may be one, or may be more than two. 
     The cap  20  is a bottomed cylindrical shape, and a female screw is formed on the inner peripheral surface, and it is so-called screw cap. The cap  20  and the valve  21  are integrated, and the valve  21  moves to the inside of the fitting cylindrical part  15   a   1  by interlocking with the fastening condition of the cap  20 . That is, when fastening the cap  20 , the valve  21  is pushed in the inside of the fitting cylindrical part  15   a   1 , and when loosening the cap  20 , the valve  21  moves in the direction of pulling off from the fitting cylindrical part  15   a   1 . 
     The valve  21  is provided with a bottomed cylindrical shaped housing  24 , the aforementioned stem  22  freely moved vertically stored the inside of the housing, a spring  25  energizing the stem  22  upwardly, a stem rubber  26 , and a valve holder  18  provided with a cylindrical valve holding part  18   a  holding the upper part of the housing  24 , and it configures the discharge passage of the concentrate C. A valve mechanism is configured to switch the discharge state and the non-discharge state of the concentrate C by the stem  22 , the spring  25 , and the stem rubber  26 , and the housing  24  and the valve holder  18  configures a storing space storing the valve mechanism. 
     In this embodiment, the columnar-shaped seal opening part  27  projecting downward is provided at the lower end of the housing  24 , and the seal member  28  such as an O-ring, etc. is mounted on the lower part outer circumference of the housing  24 . The seal member  28  is compressed between the inner surface of the fitting cylindrical part  15   a   1  and the outer surface of the housing  24  which are almost equal interval in the vertical direction, so that even if it slightly moves in the vertical direction, the sealing can be maintained. 
     The vertical hole  24   c  is formed between with adjacent the reinforcing plate  27   d . Thus, the reinforcing plate  27   d  does not disturb the discharge of the contents. The number of the vertical holes  24   c  is the same as the number of the reinforcing plates  27   d . However, it may be one to two, etc., or it may be less than that. 
     A second projection (projection) 18   i  projecting in the radially outward direction is provided on the outer peripheral surface of the valve holding part  18   a  of the valve holder  18 . The projection length of the second projection  18   i  is determined in order to contact with the first projection  15   m . The number of the second projection  18   i  may be one, or it may be more than two in the circumferential direction. Further, the second projection  18   i  may continue in the circumferential direction. 
     When the user uses the purchased discharge device  10 , first, the cap  20  is screwed in the male screw  13   e  of the outer container. With this, the entire cap  20  and the valve  21  are lowered, and the bottom surface  27   a  of the seal opening part  27  pushes down the closing part  15   d . With this, the thin part  15   f  is broken, and the pressurized product  11   a  is opened. A part of the closing part  15   d  is connected with the bottom part  15   c , or it tears off from the fitting cylindrical part  15   a   1 , so as to be separated and fallen off from the bottom part  15   c.    
     When the closing part  15   d  is broken, there is a case in which the concentrate C is leaked from the space between the inner periphery of the bottom part  15   c  and the outer periphery of the seal opening part  27 . However, at the position further downstream than the closing part  15   d , the space between the fitting cylindrical part  15   a   1  and the housing  24  is sealed by the seal member  28 , so that the concentrate C is stored inside the fitting cylindrical part  15   a   1  and it does not leak outside. 
     By the way, as described above, the lid  15  is provided with the recessed groove  15   n . When the seal member  28  is positioned at the recessed groove  15   n , at the part overlapping with the recessed groove  15   n , the compression of the seal member  28  by the inner surface of the lid  15  (fitting cylindrical part  15   a   1 ) and the outer surface of the valve  21  (housing  24 ) is loosened. In this state, it can be said that the sealing by the seal member  28  is partially released by the recessed groove  15   n . Therefore, the concentrate C is leaked from the inner container  14  through the recessed groove  15   n . The leaked concentrate C is leaked outside the discharge device  10  passing through the space between the lid  15  and the valve holder  18  or the space between the inner surface of the cap  20  and the outer surface of the neck part  13   d  of the outer container  13 . Since the leaked concentrate C is slowly leaked without momentum, it is not scattered around, and it adheres to the hand of the user who tries to remove the cap  20  or it can be visually recognized. 
     Before the cap  20  is loosened (starts removing), that is, the seal member  28  is positioned lower (upstream) than the recessed groove  15   n  in the state in which the cap  20  is completely mounted to the pressurized product  11   a . Therefore, the concentrate C is not leaked from the recessed groove  15   n . On the other hand, when loosening the cap  20  (starts removing), the entire valve  21  moves toward the upper side, and the seal member  28  is positioned at the recessed groove  15   n  before removing the cap  20  from the pressurized product  11   a  (in the state in which the cap  20  is still screwed in the male screw  13   e ), and the concentrate C leaks (see the arrow in  FIG. 16B ). With this, by moving the valve  21  due to the operation in which the cap  20  is loosened (starts removing), the discharge device  10  of the aforementioned configuration is provided with a part releasing mechanism Re which partially release the sealing by the seal member  28 , so that by leaking the concentrate C, the user can be notified that the concentrate C still remains, and the removal of the cap  20  in the state in which the concentrate C remains can be suppressed. Note that when fastening the cap  20  again when realizing the leakage of the concentrate C, the seal member  28  is positioned lower than the recessed groove  15   n , and the leakage of the concentrate C stops, so that it can be reused. 
     Further, the lid  15  (container  11 ) is provided with the first projection  15   m , and the valve  21  (valve assembly) is provided with the second projection  18   i . In the state in which the cap  20  is completely mounted to the pressurized product  11   a  (before the cap  20  is loosened (starts removing)), the second projection  18   i  is positioned lower than the first projection  15   m , and the first projection  15   m  and the second projection  18   i  are not contacted. On the other hand, when loosening (start removing) the cap  20 , the entire valve  21  moves toward the upper side, and before the cap  20  is removed from the pressurized product  11   a  (the state in which the cap  20  is still screwed in the male screw  13   e ), the first projection  15   m  and the second projection  18   i  are contacted. Therefore, the cap  20  becomes hard to be rotated. This timing when the rotation becomes hard is matched with the timing when the concentrate C is leaked from the recessed groove  15   n , and in other words, by setting an equal the loosening condition (removal condition: number of rotations or rotational angle) of the cap  20  when contacting the first projection  15   m  and the second projection  18   i , and the loosening condition (removal condition: number of rotations or rotational angle) of the cap  20  when the seal member  28  is positioned at the recessed groove  15   n  (when the part releasing mechanism Re is operated), it easily gives uncomfortable feeling to the user, and the removal of the cap  20  in the state in which the concentrate C remains can be further suppressed. 
     After totally discharging the concentrate C, the discharge member  12  is removed from the pressurized product  11   a  by rotating the cap  20 . And, the removed discharge member  12  is mounted to a new pressurized product  11   a . The pressurized product  11   a  in which the concentrate C is entirely discharged remains the pressurizing agent P in the pressurizing agent chamber Sp, but the pressurizing agent P is gradually discharged outside from the closing part  15   d  in which the lid  15  is opened by passing through the inner container  14 . When discharging the pressurizing agent P to the outside, the pressurized container  11  is easily deformed, so that it is easily recognized by the consumer and the pressurized container  11  can be safely recycled. Further, in the pressurized container  11 , the lid  15  and the container body  16  can be made of a single material, so that the consumer does not have to separate it when recycling and it is easily recycled. 
     In the double pressurized container  11  shown in  FIG. 17A , the substantially cylindrical-shaped seal part  15   a  extends to the lower side, and the fitting cylindrical part  15   a   1  is concentrically provided in the inner side of the seal part  15   a . The fitting cylindrical part  15   a   1  is raised upward from the central part of the bottom part and it opens at the upper end. The upper part of the seal part  15   a  is a substantially cylindrical shape, and the lower part  15   a   3  is a tapered shape which is tapered toward the lower side. Note that it may be a cylindrical shape from the upper part to the lower part. 
     On the other hand, the neck part  14   d  of the inner container  14  is shaped as to almost tightly contact with the outer peripheral surface of the seal part  15   a , and it is provided with a cylindrical-shaped upper part  14   d   1 , a tapered part  14   d   2  which is tapered toward the lower side than the upper part  14   d   1 , and a cylindrical part  14   d   3  extending to the lower side from the lower end of the tapered part  14   d   2 . The lower end of the cylindrical part  14   d   3  continues to the shoulder part  14   c . That is, the tapered part  14   d   2  of the neck part  14   d  of the inner container  14 , the cylindrical part  14   d   3 , and the upper part of the shoulder part  14   c  forms a narrowed part. 
     The point in which the closing part (unsealing part)  15   d  surrounded by the weakening line  15   f  at the bottom part  15   c  of the fitting cylindrical part  15   a   1  is similar to the double pressurized container  11  of  FIG. 15A . Note that in the double pressurized container  11  of  FIG. 17A , a notch  15   h   1  is provided on the outer periphery of the upper surface of the lid  15 . By providing the notch  15   h   1 , when performing the ultrasonic wave welding to the upper surface of the upper surface of the lid  15  by pressing the horn, the vibration of the horn is easily concentrated to the annular projection  13   g  of the upper end of the neck part of the outer container  13 . 
     The lid  15  shown in  FIG. 17A  is provided with a fitting cylindrical part  15   a   1  inside the seal part  15   a , and the lower end  15   a   4  of the aforementioned tapered-shaped lower part  15   a   3  and the lower end of the lower part cylindrical part  15   a   5  extending in the lower side from the fitting cylindrical part  15   a   1  are connected by the coupling part  15   a   6 . Further, the closing part  15   d  is provided at the bottom part  15   c  closing the part which is slightly higher than the lower end of the lower part cylindrical part  15   a   5 . Therefore, when performing the ultrasonic wave welding by pressing the horn to the upper surface of the lid  15 , the vibration of the horn passes through the seal part  15   a , and easily flows from the lower end  15   a   4  of the seal part  15   a  to the concentrate C side. Further, since the closing part  15   d  is provided at the position higher than the coupling part  15   a   6 , the vibration hardly transmits to the closing part  15   d . Therefore, the melting or the penetration, etc. of the weakening line  15   f  is prevented. 
     In the double pressurized container  11  of  FIG. 17A , a narrowed part is formed by the tapered part  14   d   2  and the cylindrical part  14   d   3  in the neck part  14   d  of the inner container  14 , and the narrowed part tightly contacts with the seal part  15   a  of the lid  15 , so that when the concentrate C is filled in the inner container  14 , the gas-phase part Gp (head space) becomes small. Accordingly, it is hard to cause the problems such that when the consumer starts using, the concentrate C is discharged and scattered energetically by the air compressed by the gas-phase part Gp, or the air is mixed with the concentrate C at the time of discharging, and the concentrate C is not continuously discharged, etc., so that the discharge becomes smooth. Specifically, even when a post-foaming gel composition or a post-foaming cream composition including a foaming agent, in which the boiling point is 10 to 35° C., such as isopentane or 1-chloro-3,3,3,-trifluoropropene, etc. in the concentrate is filled, the gas-phase part Gp is small, so that the foaming right after the filling is prevented, and it can be discharged in the gel state or the cream state. 
     In the double pressurized container  11  of  FIG. 17A , the neck part  14   d  of the inner container  14  and the lower part  15   a   3  of the seal part  15   a  of the lid  15  can be a straight cylindrical shape. However, it is preferable that a narrowed part is provided in the neck part  14   d  of the inner container  14 , and the lower part  15   a   3  of the seal part  15   a  of the lid  15  is a tapered-shape, so that the diameter and the volume of the gas-phase part Gp can be small. Further, a rib  15   p  press-contacting to the tapered-shaped lower part  15   a   3  with the tapered part  14   d   2  of the neck part of the inner container is provided, and by forming a line seal when the lid  15  covers the container body  16 , it prevents the inside of the inner container  14  from mixing when the pressurizing agent P is filled. Further, even when the concentrate C is atomized by the ultrasonic vibration when welding the lid  15 , the leakage to the welding part side from the space between the tapered-shaped lower part  15   a   3  and the tapered part  14   d   2  of the neck part of the inner container is prevented, and the welding is not inhibited. Note that instead of the rid  15   p , a line seal can be formed by forming the outer peripheral surface of the tapered-shaped lower part  15   a   3  in a spherical shape and abutting to the tapered part  14   d   2  of the neck part. 
     Also, in the discharge device  10  of  FIG. 17B , the recessed groove  15   n  is provided in the lid  15 . When the seal member  28  is positioned at the recessed groove  15   n , in the part overlapping with the recessed groove  15   n , the compression of the seal member  28  by the inner surface of the lid  15  (fitting cylindrical part  15   a   1 ) and outer surface of the valve  21  (housing  24 ) is weakened. In this state, it can be said that the sealing by the seal member  28  is partially released by the recessed groove  15   n . Thus, the concentrate C is leaked from the inner container  14  through the recessed groove  15   n . The leaked concentrate C is leaked outside the discharge device  10  through the space between the lid  15  and the valve holder  18 , and the space between the inner surface of the cap  20  and the outer surface of the neck part  13   d  of the outer container  13 . The leaked concentrate C is not discharged energetically, but it is discharged slowly, so that it is not scattered, and it adheres to the hand of the user who tries to remove the cap  20  or it can be visually recognized. 
     Before the cap  20  is loosened (starts removing), that is, in the state in which the cap  20  is completely mounted to the pressurized product  11   a , the seal member  28  is positioned lower (upstream) than the recessed groove  15   n . Therefore, the concentrate C is not leaked from the recessed groove  15   n . On the other hand, when the cap  20  is loosened (starts removing), the entire valve  21  moves upward, and before removing the cap  20  from the pressurized product  11   a  (the state in which the cap  20  is screwed in the male screw  13   e ), the seal member  28  is positioned at the recessed groove  15   n , and the concentrate C is leaked (see the arrow in  FIG. 17B ). With this, in the discharge device of the aforementioned configuration, a part releasing mechanism Re in which a part of the sealing by the seal member  28  is released by moving the valve  21  due to the loosening (starting to remove) of the cap  20  is provided, so that the user can be notified that the concentrate C still remains by the leakage of the concentrate C, and the removal of the cap  20  in the state in which the concentrate C remains can be suppressed. Note that when fastening the cap  20  again at the time the user realizes the leakage of the concentrate C, the seal member  28  is positioned lower (upstream) than the recessed groove  15   n , and the leakage of the concentrate C stops, so that it can be reused. 
     Further, the lid  15  is provided with the first projection  15   m , and the valve  21  is provided with the second projection  18   i . In the state in which the cap  20  is completely mounted to the pressurized product  11   a  (before the cap  20  is loosened (starts removing)), similar to the case of  FIG. 16A , the second projection  18   i  is positioned lower than the first projection  15   m , and the first projection  15   m  and the second projection  18   i  are not contacted. On the other hand, when the cap  20  is loosened (starts removing), the entire valve  21  moves upward, and before removing the cap  20  from the pressurized product  11   a , the first projection  15   m  and the second projection  18   i  are contacted. Therefore, the cap  20  becomes hard to be rotated. This timing when the rotation becomes hard is matched with the timing when the concentrate C is leaked from the recessed groove  15   n , and in other words, by equalizing the loosening condition (removal condition: number of rotations or rotational angle) of the cap  20  when contacting the first projection  15   m  and the second projection  18   i , and the loosening condition (removal condition: number of rotations or rotational angle) of the cap  20  when the seal member  28  is positioned at the recessed groove  15   n  (when the part releasing mechanism Re is operated), it easily gives uncomfortable feeling to the user, and the removal of the cap  20  in the state in which the concentrate C remains can be further suppressed. 
     Regarding another configuration, it is similar to the discharge device  10  of  FIG. 15 , and therefore, the same reference numerals are used for the same parts, and the descriptions thereof will be omitted. 
     In the discharge device  10  of  FIG. 18 , instead of the operation button  23 , an exterior part  70  is mounted. The exterior part  70  is provided with a cover part  71  mounted in the cap  20 A, a nozzle  72  mounted in the stem  22 , and a button  73  for pushing down the stem  22  via the nozzle  72  (performing a spray operation). The cap  20 A is a bottomed cylindrical shape, and the female screw is formed on the inner peripheral surface, and it is so-called “screw cap”. Accordingly, the cap  20 A is detachable to the pressurized product  11   a . Further, the valve  21  mounted to the pressurized product  11   a  by the cap  20 A is also naturally removed from the pressurized product  11   a  when the cap  20 A is removed from the pressurized product  11   a . That is, the valve  21  is also detachable to the pressurized product  11   a.    
     The cover part  71  is provided with a lower cylindrical part  71   a  covering the cap  20 A, an upper cylindrical part  71   b  extending toward the upper side from the upper end of the lower cylindrical part  71   a , a lid part  71   c  which covers the upper cylindrical part  71   b , a partition wall  71   d  partitioning the lower cylindrical part  71   a  and the upper cylindrical part  71   b , and a support cylinder  71   e  raised from the partition wall  71   d . The lower cylindrical part  71   a  is a substantially cylindrical shape, and the inner diameter is almost equal to the outer diameter of the cap  20 A. The upper cylindrical part  71   b  is a substantially cylindrical shape, and the diameter is gradually enlarged toward the upper side. The lid part  71   c  is a bottom cylindrical shape, and the lower end opens. At the lower end part, an engaging step part  71   c   1  engaging with the upper end of the upper cylindrical part  71   b  is provided. The partition wall  71   d  is a substantially disk shape, and a through hole  71   d   1  in which the nozzle  72  and the stem  22  pass through is provided at the central part. The support cylinder  71   e  is a substantially cylindrical shape, and extends toward the upper side from the periphery of the through hole  71   d   1 . 
     An inside of a nozzle  72  is provided with a passage  72   a  passing through the concentrate C. This nozzle  72  is provided with a vertical part  72   b  extending in the upper direction, and a horizontal part  72   c  extending in the horizontal direction from the upper end of the vertical part  72   b . The lower end of the vertical part  72   b  is detachably mounted to the stem  22 . Therefore, it can be removed from the stem  22  and it can be cleaned-up. The inside of the passage  72   a  connects to the stem  22 . The passage  72   a  opens at the top end of the horizontal part  72   c . At the top end of the horizontal part  72   c , a spray nozzle  72   d  having an injection hole is mounted. 
     The button  73  is provided with a bottomed cylindrical shape pushing part  73   a , and a cylindrical-shaped covering cylinder  73   b  extending downward from the center of the pushing part  73   a . The pushing part  73   a  engages with the horizontal part  72   c  of the nozzle  72 , and it is configured to push down the stem  22  via the nozzle  72  by pushing down the pushing part  73   a . Further, when the nozzle  72  is removed from the stem  22 , it is configured to be removed with the nozzle  72 . The covering cylinder  73   b  is externally fitted to the support cylinder  71   e  in a freely sliding manner, and the wobbling of the button  73  when pushing down the pushing part  73   a  is suppressed. 
       FIG. 18B  shows the state in which the lower cylindrical part  71   a  covers the cap  20 A. As shown in the drawing, the first claw part  71   a   1  is provided on the inner peripheral surface of the lower cylindrical part  71   a , and the second claw part  20   c  is provided on the outer peripheral surface of the cap  20 A. The first claw part  71   a   1  and the second claw part  20   c  are engaged each other, for example, only when rotating the cover part  71  (lower cylindrical part  71   a ) clockwise with respect to the axis of the cap  20 A. Specifically, each of the first claw part  71   a   1  and the second claw part  20   c  is a serrated shape, and when rotating clockwise, these parts are hooked, but when rotating counterclockwise, the first claw part  71   a   1  climbs over the second claw part  20   c , so as not to be hooked each other. Therefore, when the cover part  71  is rotated clockwise, the cap  20 A is also rotated clockwise. On the other hand, when the cover part  71  is rotated counterclockwise, the first claw part  71   a   1  and the second claw part  20   c  are not engaged. Thus, even when the cover part  71  is rotated counterclockwise, the cap  20 A is not rotated, and the cover part  71  is only turned idlingly. That is, a ratchet mechanism Ra is configured to corotate the lower cylindrical part  71   a  and the cap  20 A in only one direction. The corotating direction is the same direction as the direction of fastening the cap  20 A. Thus, even when the cover part  71  rotates, it cannot be rotated in the direction of loosening (removing) the cap  20 A, and the removal of the cap  20 A from the pressurized product  11   a  can be suppressed. On the other hand, since the cap  20 A can be fastened by rotating the cover part  71 , in the state in which the cap  20 A and the valve  21  are inserted in the lower cylindrical part  71   a , the exterior part  70  covers the pressurized product  11   a , and by rotating the exterior part  70 , the pressurized product  11   a  can be opened. 
     In order to discharge concentrate C, first, the engagement between the upper cylindrical part  71   b  and the lid part  71   c  is released, and the lid part  71   c  is removed (see  FIG. 19A ). And, by pushing down the exposed button  73  downwardly, the stem  22  is pushed down via the nozzle  72 , and the concentrate C is discharged from the nozzle  72 . After the total quantity of the concentrate C is discharged, the exterior part  70  is removed in the upper side and then, the cap  20 A is rotated, and the valve  21  is removed from the pressurized product  11   a . And, the removed discharge member  12  (cap  20 A, valve  21 , seal member  28 , exterior part  70 ) is mounted to a new pressurized product  11   a.    
     Regarding another configuration, it is similar to the discharge device  10  of  FIGS. 15 and 17 , and therefore, the same reference numerals are used for the same parts, and the descriptions thereof will be omitted. 
     In the discharge device  10  of  FIG. 19 , the exterior part  70  and the cap  20  are not engaged, and the exterior part  70  and the pressurized product  11   a  are engaged. Specifically, an engaging hole  74   a  is provided in the lower cylindrical part  71   a  of the cover part  71 A, and the projecting piece  13   i  engaging with the engaging hole  74   a  is provided in the support part  13   d   1  of the outer container  13 , and by inserting the projecting piece  13   i  into the engaging hole  74   a , the exterior part  70  and the outer container are engaged. With this, in the case in which the exterior part  70  and the cap  20  are not engaged, even when the exterior part  70  is rotated, the cap  20  is not loosened, and the removal of the cap  20  from the pressurized product  11   a  can be suppressed. Note that the engaging hole  74   a  is positioned at the movable part  74  which is nearly separated from the lower cylindrical part  71   a . In the movable part  74 , only two parts (coupling part  74   b ) of the middle part in the vertical direction are connected with the lower cylindrical part  71   a , and when the upper part of the movable part  74  is pushed in, the lower part of the movable part  74  is configured to be projected outside. The engaging hole  74   a  is provided at the lower part of the movable part  74 , and in order to release the engagement between the engaging hole  74   a  and the projecting piece  13   i , the upper part of the movable part  74  is pushed in. 
     Regarding another configuration, it is similar to the discharge device  10  of  FIG. 18 , and therefore, the same reference numerals are used for the same parts, and the descriptions thereof will be omitted. 
     In the discharge device  10  of  FIG. 20 , the cover part  71 B is provided with engaging parts  71   a   3  in which the cover part  71 B is rotatably engaged with the cap  21 B around the axis of the cap  20 B. Specifically, first, the lower cylindrical part  71   a  of the cover part  71 B is provided with a plurality of engagement pieces  71   a   2  extended downward, and an engaging projection (engaging part)  71   a   3  provided inside the engagement pieces  71   a   2 . The engaging projections  71   a   3  are engaged with the lower end of the cap  21  B, but the lower end of the cap  21 B is flat and smooth. Therefore, even when the cover part  71 B is rotated around the axis of the cap  21 B, the engaging projections  71   a   3  do not hook the cap  21 B in the rotation direction. That is, the engaging projections  71   a   3  suppress the falling-down of the cover part  71 B from the cap  21 B, and it does not limit the rotation of the cover part  71 B. Note that it can be said that a slit is provided between the engagement pieces  71   a   2 ,  71   a   2 , and the engagement pieces  71   a   2  are easily deformed in a radially outer direction of the lower cylindrical part  71   a , and the engaging projections  71   a   3  are easily engaged with the lower end of the cap  21 B. 
     The engagement pieces  71   a   2  are covered by a skirt part  71   a   4  extended downward from the base end of the engagement piece  71   a   2 . The skirt part  71   a   4  continues in the circumferential direction, and it exceeds the engagement pieces  71   a   2  and extends to the vicinity of the shoulder part  13   c  of the outer container  13 . 
     By the way, the discharge device  10  of  FIG. 20  is provided with a ratchet mechanism Ra. Note that it is different from the discharge device  10  of  FIG. 18A , and the first claw part  71   a   1  is provided in the upper part of the lower cylindrical part  71   a  (the vicinity of the lower surface of the partition wall  71   d ), and the second claw part  20   c  is provided in the upper part of the cap  21 B (the vicinity of the lower surface of the partition wall  71   d ). As the mechanism, it is similar to the one shown in  FIG. 18A  or  FIG. 18B . That is, in the direction of fastening (mounting) the cap  21 B, the first claw part  71   a   1  and the second claw part  20   c  are engaged, and in the direction of loosening (removing) the cap  21 B, the first claw part  71   a   1  and the second claw part  20   c  are not engaged. Therefore, even when the cover part  71 B rotates around the axis of the cap  21 B, the cap  21 B is not loosened (removed). On the other hand, in order to open the unopened pressurized product  11   a , in the state in which the cap  21 B is inserted inside the lower cylindrical part  71   a , the cap  21 B and the cover part  71 B cover the pressurized product  11   a , and it only rotates the cover part  71 B in the direction of fastening the cap  21 B. Note that in order to engage the engaging projections  71   a   3  to the lower end of the cap  21 B, the falling-off of the cap  21 B from the cover part  71 B can be prevented, and it makes the working easy. 
     After the total amount of the concentrate C is discharged, first, the exterior part  70  is removed to the upper side. The engaging projections  71   a   3  are engaged with the lower end of the cap  21 B, and the engaging projections  71   a   3  are existed at multiple positions, and the engagement pieces  71   a   2  are separated each other, so that the engagement can be released by relatively small force. After that, the valve  21  is removed from the pressurized product  11   a  by rotating the cap  20 B. And, the removed discharge member  12  (the cap  20 B, the valve  21 , the seal member  28 , the exterior part  70 ) is mounted to a new pressurized product  11   a.    
     Regarding another configuration, it is similar to the discharge device  10  of  FIG. 18 , and therefore, the same reference numerals are used for the same parts, and the descriptions thereof will be omitted. 
       FIGS. 21 and 22  show the discharge device  10  which does not use a screw cap as a cap. As shown in  FIG. 21A , a screw is not provided on the inner peripheral surface of the cap  20 C, and as shown in  FIG. 21B , a male screw is not provided in the neck part  13   d  of the outer container  13 A. In this discharge device  10 , the cap  20 C is locked in the outer container  13 A by a groove part  13   j  and the engaging projection (projection)  20   d  engaging with the groove part  13   j . It can be said that the engaging projection  20   d  is provided in the valve assembly. 
     The groove part  13   j  is provided on the outer peripheral surface of the neck part  13   d  of the outer container  13 A. The groove part  13   j  is provided with a longitudinal groove  13   j   1  extended downward from the upper end of the neck part  13   d , a horizontal groove  13   j   2  extended in the horizontal direction from the lower end of the longitudinal groove  13   j   1 , and a holding part  13   j   3  which is recessed upward in the terminal end of the horizontal groove  13   j   2 . It is preferable to provide a plurality of groove parts  13   j . Further, the groove parts  13   j  are preferably provided at equal intervals. 
     The engaging projection  20   d  is provided in the lower part of the inner peripheral surface of the cap  20 C. The engaging projection  20   d  is projected in a radially inner direction, and the top end in the radially inner direction of the engaging projection  20   d  is positioned in the inner side than the outer peripheral surface of the neck part  13   d  (except the groove part  13   j ). It is preferable to provide a plurality of engaging projections  20   d . For example, the number of the engaging projections  20   d  is preferably the same number as the groove parts  13   j . Further, the engaging projections  20   d  are preferably provided in the same interval as the groove parts  13   j.    
     In order to mount the cap  20 C in the outer container  13 A, first, the positions of the engaging projection  20   d  and the longitudinal groove  13   j   1  are matched. And, the cap  20 C is pushed down. When pushing down the cap  20 C, the closing part  15   d  of the lid  15  is pushed down by the seal opening part  27  of the valve  21 , and the pressurized product  11   a  is opened. After opening, the cap  20 C is rotated around the axis, and the engaging projection  20   d  is moved from the longitudinal groove  13   j   1  to the horizontal groove  13   j   2 . After the pressurized product  11   a  is opened, the valve  21  receives the pressure of the pressurizing agent P, but by positioning the engaging projection  20   d  at the horizontal groove  13   j   2 , the cap  20 C is not removed from the pressurized product  11   a . Note that when the engaging projection  20   d  is positioned at the holding part  13   j   3 , it becomes the state in which the engaging projection  20   d  is recessed, and the rotation around the axis of the cap  20 C is suppressed. 
     By the way, a locking projection (projection)  13   k  is provided in the longitudinal groove  13   j   1  (container  11 ). The locking projection  13   k  is not hooked when pushing down the cap  20 C, or it is hardly hooked, and it is hooked in the direction of pulling the cap  20 C off. Specifically, the inclination of the upper surface with respect to the outer peripheral surface of the neck part  13   d  is moderate, and the inclination of the lower surface is steep. Further, the position in the vertical direction of the locking projection  13   k  is determined in the manner in which the locking projection  13   k  is engaged with the engaging projection  20   d  at the position where the part releasing mechanism Re is operated by the recessed groove  15   n  and the seal member  28 . Therefore, after the pressurized product  11   a  is opened, even when the engaging projection  20   d  is positioned at the longitudinal groove  13   j   1  (the cap  20 C starts removing from the pressurized product  11   a ), the cap  20 C is not immediately removed from the pressurized product  11   a , and once, it may be stopped by the locking projection  13   k . In this case, when the concentrate C inside the inner container  14  remains, the concentrate C is slightly leaked outside the discharge device  10  by the part releasing mechanism Re. Even when the part releasing mechanism Re operates, by pushing the cap  20 C down again, the discharge device  10  can be continuously used. After all of the concentrate C is completely discharged, the concentrate C is not leaked. In this case, the engagement between the locking projection  13   k  and the engaging projection  20   d  is released by strongly pulling the cap  20 C upward, so that the cap  20 C or the valve  21  can be removed from the pressurized product  11   a . The removed discharge member  12  can be mounted to a new pressurized product  11   a.    
     Note that in the aforementioned discharge device  10 , the first projection  15   m  is not provided in the lid  15 , and the second projection  18   i  is not provided in the valve holder  18 . Regarding another configuration, it is similar to the discharge device  10  of  FIG. 15 , and therefore, the same reference numerals are used for the same parts, and the descriptions thereof will be omitted. 
       FIGS. 23A and 23B  show another discharge device. As shown in the drawings, in the discharge device  10 , the inside of the inner container  14  is the pressurizing agent chamber Sp in which the pressurizing agent P is filled, and the space between the outer container  13  and the inner container  14  is the concentrate chamber Sc in which the concentrate C is filled. And, the pressurizing agent P is filled inside the inner container  14 , and the concentrate C is filled in the space between the outer container  13  and the inner container  14 . The outer container  13  and the inner container  14  are sealed by the lid  15 . In this embodiment, the lid  15  is separated into an outer lid  151  sealing the outer container  13  and an inner lid  152  sealing the inner container  14 . A concentrate passage G is existed between the outer lid  151  and the inner lid  152 . 
     The outer container  13  is similar to the aforementioned another discharge device  10 . The inner container  14  is partially different from the aforementioned another discharge device  10 . Specifically, a flange engaging with the upper end surface  14   e  of the neck part  13   d  of the outer container  13  is not provided. However, the flange may be provided. 
     On the outer peripheral surface of the neck part  14   d  of the inner container  14 , as shown in  FIG. 24B , a longitudinal groove  14   i  communicating between the concentrate chamber Sc and the concentrate passage G is formed. The neck part  14   d  of the inner container  14  is fitted to the inner peripheral surface of the neck part  13   d  of the outer container  13  except the longitudinal groove  14   i . Further, in the case of performing a blow-molding at the same time, the outer surface of the shoulder part  14   c  of the inner container  14  is tightly contacted with the inner surface of the shoulder part  13   c  of the outer container  13 , so that there is a case in which the concentrate C hardly flows. In order to fill the pressurizing agent (gas) P, when the outer lid  151  is welded, the inner container  14  is deformed downward from the neck part  14   d  to the shoulder part  14   c  by pushing the upper end of the neck part  14   d  of the inner container  14  into the inside of the neck part  13   d  of the outer container  13 , and the outer surface of the shoulder part  14   c  of the inner container  14  is peeled off from the inner surface of the shoulder part  13   c  of the outer container  13 , so that the channel of the concentrate C can be enlarged and it is hardly clogged. 
     As shown in  FIG. 24B , the inner lid  152  is provided with a cylindrical fitting part  152   a  inserted and fitted inside the neck part  14   d  of the inner container  14 , a disk-shaped lid part  152   b  sealing the opening of the upper end of the fitting part  152   a , and a flange  152   c  expanding outward from the upper end of the fitting part  152   a . The fillet part for welding may be provided in the root of the fitting part  152   a  and the lid part  152   b.    
     The outer lid  151  is provided with a cylindrical-shaped outer cylindrical part  151   a  welded to the upper end surface  13   f  of the neck part  13   d  of the outer container  13 , an annular disk part  151   b  sealing the opening of the upper end of the outer cylindrical part  151   a , and a fitting cylindrical part  15   b   1  raised from the central part of the annular disk part  151   b . The outer cylindrical part  151   a  is inserted to the outer periphery of the flange  152   c  of the inner lid  152  with a space. The opening of the lower part of the fitting cylindrical part  15   b   1  is sealed by the bottom plate  15   c , and a closing part  15   d , which is opened when it is used, is provided in the bottom plate  15   c . The periphery of the closing part  15   d  is surrounded by an annular thin part or a weakening line  15   f . The weakening line  15   f  has sufficient sealing function in the unopened state, and it is the shape to be easily broken. In this embodiment, the weakening line  15   c  is formed in a V-groove. The bottom plate  15   c  is provided in the upper side than the annular disk part  151   b  and a space is formed in the lower side, because the closing part  15   d  is fallen down or it is easily deformed downwardly. Further, in the case in which the outer lid  151  is welded to the upper end surface  13   f  of the outer container, the horn applying the ultrasonic vibration is pressed to, but since the closing part  15   d  of the bottom plate is provided in the upper side than the annular disk part  151   b , the ultrasonic vibration hardly flows to the closing part  15   d , and the melting of the weakening line  15   f  of the closing part which is made thin can be prevented. 
     In the upper surface side of the closing part  15   d , a pressure receiving part  15   d   1  which is thickened so as to be hardly bent at the time of opening is provided. Further, in order to prevent the closing part  15   d  from falling-off or disengaging after opening, a coupling part  15   g  extended in a radial direction across the weakening line  15   f  may be provided. Further, the fitting cylindrical part  15   b   1  or the closing part  15   d  may be partially made hard by cooling condition, etc. at the time of molding, so that the elongation at the time of opening is suppressed, and it may be easily breakable. 
     The inner peripheral surface of the fitting cylindrical part  15   d   1  is the part where the sealing material  28  of the discharge member  12  abuts in order not to leak the concentrate C when opening the closing part  15   d , and it is preferable to be made smooth cylindrical surface, and it may be a tapered shape which is reduced downwardly in diameter. However, in the upper part of the fitting cylindrical part  15   b   1 , a recessed groove  15   n  extending in the vertical direction is provided. The upper end of the recessed groove  15   n  reaches the upper end of the fitting cylindrical part  15   b   1 . On the other hand, the lower end of the recessed groove  15   n  does not reach the bottom part  15   c , and it stops at the position which is approximately ¼ to ⅕ of the length of the vertical direction of the fitting cylindrical part  15   b   1 . That is, the recessed groove  15   n  is not provided in the lower part of the fitting cylindrical part  15   b   1 . This is because when the closing part  15   d  is opened by the valve  21 , it becomes the state in which the liquid-tight seal between the fitting cylindrical part  15   b   1  and the valve  21  is already formed by the seal member  28 . For example, the lower end of the recessed groove  15   n  may be positioned higher (downstream) than the position of the seal member  28  in the state in which the valve  21  firstly abuts to the closing part  15   d . The number of the recessed groove  15   n  may be one or may be more than two. 
     In the space between the inner peripheral surface of the outer cylindrical part  151   a  of the outer lid  151  and the outer peripheral surface of the inner lid  152 , a vertical passage G 1  configured by the space in which the concentrate C passes through is provided. The height of the outer cylindrical part  151   a  of the outer lid  151  is defined as a dimension remaining a space (horizontal passage G 2 ) in which the concentrate C passes through between the lower surface of the annular disk part  151   b  and the upper surface of the lid part  152   b  of the inner lid  152  after the inner lid  152  and the outer lid  151  are welded to the inner container  14  and the outer container  13 . The concentrate passage G is configured by the aforementioned vertical passage G 1  and horizontal passage G 2 . 
     The procedure for filling the pressurizing agent P and the concentrate C in the double pressurized container  11  of the aforementioned configuration will be described. In order to fill the pressurizing agent P into the pressurizing agent chamber Sp, first, the inner lid  152  covers to the inner container  14 , and the pressurizing agent P is filled from the space between the flange  152   c  and the upper end surface  14   e  of the neck part  14   d  of the inner container  14 . Next, the flange  152   c  is welded to the upper end surface  14   e  of the neck part  14   d  by pressing the horn of the ultrasonic wave welding to the upper surface of the inner lid  152 . With this, the inner lid  152  is fixed to the inner container  14 , and the pressurizing agent chamber Sp is sealed. 
     Next, the outer lid  151  covers the outer container  13 , and the concentrate C is filled to the concentrate chamber Sc from the space between the lower surface of the outer cylindrical part  151   a  and the upper end surface  13   f  of the neck part  13   d  of the outer container  13 . At this time, the concentrate chamber Sc expands. Next, the lower surface of the outer cylindrical part  151   a  is welded to the upper end surface  13   f  of the neck part  13   d  of the outer container  13  by pressing the horn of the ultrasonic wave welding to the upper surface of the outer lid  151 . With this, the concentrate chamber Sc is sealed. At this time, the concentrate passage G (the vertical passage G 1 , the horizontal passage G 2 ) is formed between the outer lid  151  and the inner lid  152 . 
     In the aforementioned production method, the pressurizing agent P is filled in the inner container  14  and the welding for sealing the inner container  14  is performed, and after that, the concentrate C is filled and the welding for sealing the concentrate chamber Sc is performed, so that the production steps become simple and easy. Specifically, the outer lid  151  is provided with the outer cylindrical part  151   a  in which the inner lid  152  is inserted, so that the welding with the outer container  13  is not inhibited by the inner lid  152  and the inner container  14  which are welded first. 
     As the material of the outer lid  151  or the inner id  152 , thermoplastic resin having high thermal bondability with the outer container  13  or the inner container  14  is used. When fixing by the welding, it is preferable that the outer container  13  and the inner container  14  use a same material. The outer lid  151  and the inner lid  152  are welded to the outer container  13  and the inner container  14 , respectively, and it may be adhered by an adhesive. The concentrate chamber Sc and the pressurizing agent chamber Sp are sealed by the outer lid  151  and the inner lid  152 , and by fixing to one of the inner container  14  and the outer container  13 , or both, the contents (concentrate C, pressurizing agent P) can be safely secured for a long period of time without any leakage. 
     The use method of the discharge product  11   a  will be described with reference to  FIGS. 24 and 25 . The discharge member  12  is provided with a cap (mounting part)  20 D screwing with the male screw  13   e  of the neck part  13   d  of the outer container  13 , and a valve (valve)  21  held by the cap  20 D. In the stem  22  of the valve  21 , an operation device in which the discharging is performed by an operation button provided with a nozzle (reference numeral  23  of  FIG. 23A , operation part) or an operation lever is mounted. The cap  20 D is a bottomed cylindrical shape, and a female screw is formed on the inner peripheral surface. And, a bottomed cylindrical shaped center cylinder  20   a   1  in which the fitting cylindrical part  15   b   1  of the outer lid  151  is stored in the upper bottom  20   a  is provided in the upward projection manner. The upper end of the center cylinder  20   a   1  is a valve holding part  20   f  holding the housing  24  of the valve  21 . A hole  20   g  passing through the stem  22  in the center of the upper bottom  20   b   1  of the valve holding part  20   f  is formed. 
     In the seal opening part  27 , the vertical hole  24   c  communicating between the inside of the housing  24  and the inside of the concentrate passage G after opening is formed. The vertical hole  24   c  may be provided at one place, but it can be provided in multiple places. By providing it at multiple places, even if one of the vertical holes is clogged, the concentrate can be discharged from another vertical hole  24   c . Note that the vertical hole  24   c  may be formed at the center of the seal opening part  27 . 
     In the lower end  27   a  of the seal opening part  27 , a flat end surface brought close to or abutting the upper surface of the closing part  15   d , that is, the upper surface of the pressure receiving part  15   d   1  is formed. By making the lower end  27   a  flat, the lower end is hardly collapsed even when it is used multiple times. As shown in  FIG. 25A , the position of the lower end  27   a  is the position abutting the closing part  15   d  when the cap  20 D is screwed to the male screw of the outer container  33  approximately one to two times. Therefore, at the time of the delivery, the cap  20 D is loosely screwed and the closing part  15   d  is not broken, and it can be a temporary mounting to connect the discharge member  12  and the double pressurized container  11  in the sealing state. 
     At the time of distribution and sales, when the cap  20 D is mounted to the outer container  13  and it is temporarily connected by loosely screwing as shown in  FIG. 25A , the customer who purchases it can easily perform an opening operation. Note that as shown in  FIG. 23B , it may sell or distribute as a set in which the discharge product  11   a  and the discharge member  12  are not assembled. 
     When the user rotates the cap  20 D, the entire cap  20 D and the valve  21  are lowered, as shown in  FIG. 25B , the lower end  27   a  of the seal opening part  27  pushes down the closing part  15   d , and the weakening line  15   f  is broken so that it is opened. However, since it is not broken by the coupling part  15   g , the closing part  15   d  is not fallen off, and it remains in the state in which it is hanged from the bottom plate  15   c . Therefore, the opened hole, etc. is not clogged by the closing part  15   d . Instead of providing the coupling part  15   g , the weakening line  15   f  may be formed at only one place, or the V-groove may be made shallow. The inside of the housing  24  and the concentrate chamber Sc are connected via the concentrate passage. 
     The concentrate C inside the concentrate chamber Sc is compressed by the pressurizing agent P via the inner container  14 , so that when the user pushes the operation button  23  mounted in the stem  22 , the stem rubber  26  is deflected by lowering the stem  22 , and the stem hole opens, and the concentrate C inside the concentrate chamber Sc is discharged outside via the longitudinal groove  14   i  of the neck part  14   d  of the inner container  14 , the vertical passage G 1 , the horizontal passage G 2 , the seal opening part  27 , the housing  24 , stem  22 , and the operation button  23 . When stop pushing, the stem  22  is raised, and the discharge stops. The pressurizing agent chamber Sp in which the pressurizing agent P is filled is closed by the inner lid  152 , and it does not communicate with the outside or the concentrate chamber Sc, so that the pressurizing agent P is not leaked outside. 
     By the way, as described above, the outer lid  151  is provided with the recessed groove  15   n . When the seal member  28  is positioned at the recessed groove  15   n , at the part overlapping with the recessed groove  15   n , the compression of the inner surface of the lid  15  (fitting cylindrical part  15   b   1 ) and the outer surface of the valve  21  (housing  24 ) is weakened. In this state, it can be said that the sealing by the seal member  28  is partially released by the recessed groove  15   n . Therefore, the concentrate C is leaked from the concentrate chamber Sc through the recessed groove  15   n . The leaked concentrate C is leaked outside of the discharge device  10  through the space between the inner surface of the cap  20 D and the outer surface of the neck part  13   d  of the outer container  13 . The leaked concentrate C is not discharged energetically, but it is discharged slowly, so that it is not scattered, and it adheres to the hand of the user who tries to remove the cap  20  or it can be visually recognized. 
     Before loosening (start removing) the cap  20 D, that is, in the state in which the cap  20 D is completely mounted to the pressurized product  11   a , the seal member  28  is positioned in the lower side (downstream) than the recessed groove  15   n . Thus, the concentrate C is not leaked from the recessed groove  15   n . On the other hand, when the cap  20 D is loosened (start removing), the entire valve  21  is moved upward, and before the cap  20 D is removed from the pressurized product  11   a  (in the state in which the cap  20 D is screwed in the male screw  13   e ), the seal member  28  is positioned at the recessed groove  15   n , and the concentrate C is leaked (see the arrow in  FIG. 25C ). With this, since the discharge device  10  of the aforementioned configuration is provided with the part releasing mechanism Re which partially releases the sealing by the seal member  28  by moving the valve  21  due to the operation in which the cap  20 D is loosened (starts removing), so that the user can be notified that the concentrate C still remains by the leakage of the concentrate C, and the removal of the cap  20 D in the state in which the concentrate C remains can be suppressed. Note that when fastening the cap  20 D again at the time the user realizes the leakage of the concentrate C, the seal member  28  is positioned lower than the recessed groove  15   n , and the leakage of the concentrate C stops, so that it can be reused. 
     When the concentrate C is low, the inner container  14  is enlarged, and the concentrate chamber Sc is contracted. And, it is enlarged so as to be close to the original shape every time the concentrate is discharged, and after all of the concentrate is discharged, the container  14  does not have wrinkling or twisting so as to tightly and almost fit to the inner surface of the outer container  13 . At this time, since the appearance changes to a transparent from the concentrate C, it is easy to know the removal period of the discharge member  12 . In this state, the cap  20 D is removed from the outer container  13 . Since the double pressurized container  11  uses a compressed gas as the pressurizing agent P, when the concentrate C is empty, the pressure becomes low as approximately 0.01 to 0.2 MPa (gauge pressure), but in order to release the pressurizing agent P inside the inner container  14 , it is preferable to provide an unsealing part for releasing gas in the inner lid  152 . With this, the pressurizing agent P inside the outer container  13  can be safely released, and the outer container  13  is reduced by crushing and can be discarded. Note that the removed discharge member  12  is reused so as to be mounted to a new discharge product  11   a.    
     In the double pressurized container  11  of  FIG. 26A , in order not to continue the thin part  15   f  annularly, a plurality of coupling parts  15   g  is provided. The coupling parts  15   g  are preferably provided in equal intervals in the circumferential direction. The coupling parts  15   g  are made thicker than the thin part  15   f.    
     In the discharge device  10  using the double pressurized container  11  of the aforementioned configuration, as shown in  FIG. 27A , when the closing part  15   d  is pushed down by the seal opening part  27 , the thin part  15   f  is broken, and a through hole  15   u  is formed around the closing part  15   d . However, the coupling part  15   g  is not broken, and the closing part  15   d  is still connected with the bottom part  15   c , so that it is not fallen off. Specifically, a plurality of coupling parts  15   g  is provided, so that the closing part  15   d  is not inclined, and it maintains the state in which the upper surface of the seal opening part  15   d  and the bottom surface  27   a  of the seal opening part  27  are always abutted. Further, it is the state in which the coupling part  15   g  is elastically elongated. Accordingly, the coupling part  15   g  has resilience to be returned to the original length. Therefore, when the cap  20  is removed and the seal opening part  27  is moved upward, the elongated coupling part  15   g  becomes short together with the movement of the seal opening part  27 . When the coupling part  15   g  is returned to the original length, naturally, the through hole  15   u  is sealed (see  FIG. 27B ). Further, depending on a type of the concentrate C, by reducing the contractibility of the coupling part  15   g , etc. influenced by the concentrate, there is a case in which the coupling part  15   g  is hardly returned to the original length. However, since the closing part  15   d  receives the pressure by the pressurizing agent P, it is the state in which the coupling part  15   g  is always energized upwardly, so that the closing part  15   d  easily seals the through hole  15   u.    
     With this, the thin part  15   f  for forming the through hole  15   u  is provided around the closing part  15   d , and a plurality of the coupling parts  15   g  is provided around the closing part  15   d , so that the through hole  15   u  maintains the open state by mounting the discharge member  12 , and by removing the discharge member  12 , an opening/closing mechanism is formed, so that the through hole  15   u  becomes the close state or the opening area of the through hole  15   u  becomes small significantly. Therefore, in the discharge device  10  of the aforementioned configuration, even if the cap  20  is removed in the state in which the concentrate C remains, the leakage of the concentrate C can be suppressed. 
     Regarding another configuration, it is similar to the discharge device  10  of  FIG. 17 , and therefore, the same reference numerals are used for the same parts, and the descriptions thereof will be omitted. 
     As described above, each of the discharge devices  10 ,  30 ,  50 ,  60 ,  70 ,  80 ,  90  of the present invention is provided with a suppressing means (the maintaining mechanism K, the movable lid  81 ,  91 , pressing to the bottom  513   d  of the recessed part  513   b  of the projecting part  520   a , the part releasing mechanism Re, the ratchet mechanism Ra, the thin part  15   f  and a plurality of coupling parts  15   g  (opening/closing mechanism)) for suppressing the leakage of the concentrate C due to the removal of the valve  21 ,  121 ,  221 ,  321 , so that the leakage of the concentrate can be effectively suppressed. 
     In the above, the preferable embodiments of the present invention were described. However, the present invention is not limited to the aforementioned embodiments, and various modifications may be made within the scope of the present invention. For example, the outer container  13  and the cap  20 ,  120 ,  320  may not be connected by screwing each other. For example, a male screw or a groove is provided in the outer container  13 , and a plurality of projections is provided in the cap  20 ,  120 ,  320 , and the cap is fastened by twisting in the state in which the projections are placed along the male screw, that is, it may be a twist cap structure. Further, the well-known various structures may be employed as long as it is the assembly method in which the cap  20 ,  120 ,  320  is detachable with respect to the pressurized product  11   a.    
     The recessed groove  15   n  may be provided in the valve  21 , and the seal member  28  may be mounted to the lid  15 . In this case, the recessed groove  15   n  is provided downward. By loosening the cap  20  and gradually moving the valve  21  upward, the seal member  28  is positioned at the recessed groove  15   n , and the concentrate C is leaked outside via the recessed groove  15   n.    
     Further, in the discharge device  10  shown in  FIGS. 21 and 22 , the cap  20 C may be provided with a groove part  13   j  and a locking projection  13   k , and the outer container  13 A may be provided with an engaging projection  20   d . In this case, it also has a similar effect. 
     Further, the exterior part  70  shown in  FIG. 18  or  FIG. 20  and the pressurized product  11   a  shown in  FIGS. 11, 13, 15, 17, 21, 24, 25, 27  can be freely assembled. For example, similar to the cap  20 A or the cap  20 B, when the second claw part  20   c  is provided on the outer surface of the cap  20 C of  FIG. 21 , and the exterior part  70  shown in  FIGS. 18 and 20  is covered by the cap  20 C, the ratchet mechanism Ra corotating in only one direction is configured. In the case in which the corotating direction is defined as the same direction from the longitudinal groove  13   j   1  to the holding part  13   j   3 , even when the cover part  71  is rotated to the direction from the holding part  13   j   3  to the longitudinal groove  13   j   1  (that is, the direction of removing the cap  20 C), the cap  20 C cannot be removed, and the removal of the cap  20 C from the pressurized product  11   a  can be suppressed. On the other hand, since the cover part  71  can rotate in the direction from the longitudinal groove  13   j   1  to the holding part  13   j   3 , when the exterior part  70  covers the pressurized product  11   a  and the exterior part  70  is rotated in the state in which the cap  20  and the valve  21  are inserted in the lower cylindrical part  71   a , the cap  20 C can be mounted to the pressurized product  11   a . Further, the cap  20 C and the outer container  13 A of  FIG. 21  may be applied to another discharge device such as the discharge device  10  of  FIG. 17 , etc. 
     Further, the lid  15  is welded to both of the inner container  14  and the outer container  13 , but it may be fixed to one of the containers, and the other one may be sealed (seal) by, simply, an O-ring, etc. Further, in the aforementioned embodiments, the inner container  14  and the outer container  13  are produced by performing the blow-molding at the same time, but it may be produced separately, and after that, the inner container may be stored inside the outer container, or the inner container may be formed by performing the brow-molding inside the molded outer container. In the aforementioned embodiments, the columnar-shaped opening part  27  is used, but it may be a rod shape such as a pillar shape, etc. 
     Effect of the Invention 
     The discharge device of the present invention is provided with a suppressing means (a maintaining mechanism, a movable lid, pressing to the bottom of the recessed part of the projecting part, a part releasing mechanism, a ratchet mechanism, a thin part and a plurality of coupling parts) for suppressing the leakage of the concentrate caused by removing the valve. 
     Further, in addition to mounting the valve by the cap, a maintaining mechanism for maintaining the mounting state to the pressurized product of the valve is provided. That is, in the case in which a plurality of safety devices which suppress unintentional removal from the pressurized product of the valve are provided, the leakage of the concentrate caused by removing the valve can be suppressed. 
     Further, in the case in which the maintaining mechanism is provided any one of the valve and the pressurized product, and the engaging means for maintaining the state in which the valve is mounted to the pressurized product against the pressure of the pressurizing agent, even when the cap is removed from the pressurized product, the valve is not naturally removed from the pressurized product. Therefore, even when the concentrate remains inside the container, the leakage of the concentrate can be suppressed. 
     In the case in which the engaging means is provided in any one of the valve and the pressurized product, and the engaging projection engaging with the other one is provided, it can maintain the state in which the valve is mounted to the pressurized product with a simple structure. In the case in which the engaging projection is a screw-shape, the valve and the pressurized product can be screwed, the state in which the valve is mounted to the pressurized product becomes stable. In the case in which the engaging projection is provided in the valve and the valve breaks through the pressurized product and the engaging projection is engaged to the edge of the through hole made by breaking through, there is no need to perform a special operation for engaging the valve and the pressurized product. 
     In the case in which the valve has a housing and an engaging projection, and a seal opening part which is detachable to the housing is provided, the mounting state of the seal opening part can be maintained. When the valve can be engaged with and disengaged from the pressurized product, the valve can be reused. The engaging projection is provided in the valve and the pressurized product, and by engaging the engaging projection of the valve and the engaging projection of the pressurized product, the valve and the pressurized product are engaged, and when the engagement releasing part for releasing the engagement of the engaging projections each other is provided in a position adjacent to any one of the engaging projections of the valve and the pressurized product, by only shifting the valve relative to the pressurized product, the engaging state and the disengaging state can be easily switched. 
     In the case in which the maintaining mechanism makes the inner diameter smaller by interlocking with the contraction of the container due to the reduction of the internal pressure, and the inner cylindrical part is provided at the outer periphery position of the cap, the cap and the inner cylindrical part are not engaged when the internal pressure is high, and the cap and inner cylindrical part can be engaged at the first time the internal pressure becomes low, so that the removal of the cap from the pressurized product in the high internal pressure state cannot be performed. In the case that the engaging projection, which engages with the other one at the first time the inner diameter of the inner cylindrical part becomes small, is provided in any one of the inner cylindrical part and the cap, the cap is easily removed from the pressurized product after the discharging of the concentrate is completed. 
     In the case in which the lid is provided with a movable lid which covers the closing part and maintains the open state by the mounting of the discharge member and becomes the close state by removing the discharge member, the leakage of the concentrate can be suppressed even when the discharge member is removed in the state in which the concentrate remains. 
     In the case in which the projecting part is pushed to the bottom of the recessed part by the pressure of the pressurizing agent, a force more than the pressure of the pressurizing agent is required in order to remove the cap, and unintentional removal of the valve from the pressurized product can be suppressed. 
     In the case in which the part releasing mechanism for releasing a part of sealing by the seal member by the movement of the valve due to the operation in which the cap starts removing, the small amount of the concentrate is leaked when the cap starts removing in the remaining state of the concentrate. Thus, before the cap is completely removed, the user can realize that there still remains the concentrate, so that the removal of the cap or the valve in the remaining state of the concentrate can be suppressed. 
     In the case in which the part releasing mechanism is provided with the seal member mounted on any one of the outer surface of the valve and the inner surface of the fitting cylindrical part, and the recessed groove provided in the other one to communicate with the outside, and the recessed groove is provided in a position shifting in the moving direction of the valve from the position of the seal member before the cap starts removing, or in the case in which the part releasing mechanism is provided with the seal member mounted on the outer surface of the valve, and the recessed groove communicating with the outside provided on the inner surface of the fitting cylindrical part, and the recessed groove is provided further downstream than the position of the seal member before the cap starts removing, the concentrate does not leak when the cap does not start removing. Further, even when the cap starts removing, if the cap returns to the original position, it is sealed by the seal member, so that it can be reused. 
     In the case in which the valve assembly including the valve and the cap is provided, and the valve assembly is configured not to contact with the projection of the container before the cap starts removing and to contact with the projection of the container when the cap starts removing, the resistance is applied when the cap starts removing, and the unintentional removal of the cap can be suppressed. 
     In the case in which the removing condition of the cap when the part releasing mechanism operates and the removing condition of the cap when the projections contact with the projections of the container are equal, the user easily realizes abnormality by changing the operational feeling due to the leakage of the concentrate and the resistance. 
     In the case in which the discharge member is further provided with the cover part covering the cap, and a ratchet mechanism is formed on the inner surface of the cover part and the outer surface of the cap so as to perform idling when the cover part is rotated in the removing direction of the cap, the cap cannot be rotated in the removing direction of the cap even when rotating the cover part. Thus, the unintentional removal of the cap can be suppressed. 
     In the case in which the discharge member is further provided with the cover part covering the cap, and the cover part is engaged with the pressurized product, even when rotating the cover part, the cap cannot be rotated, so that the unintentional removal of the cap can be suppressed. Alternatively, in the case in which the discharge member is further provided with the cover part covering the cap, and the cover part is provided with an engaging part in which the cover part is rotatably engaged with the cap around the axis of the cap, the falling-off of the cover part is suppressed and the case in which the user directly touches the cap is suppressed, and even when rotating the cover part, the removal of the cap can be suppressed. 
     In the case in which the container body is provided with an outer container and an inner container having flexibility to be stored inside the outer container, and the inside of the inner container is a concentrate chamber filling the concentrate, and a space between the outer container and the inner container is a pressurizing agent chamber filling the pressurizing agent, or in the case in which the inside of the inner container is a pressurizing agent chamber filling the pressurizing agent, and a space between the outer container and the inner container is a concentrate chamber filling the concentrate, when the concentrate is filled in the concentrate chamber and the pressurizing agent is filled in the pressurizing agent chamber, the elasticity of the outer container becomes higher by the pressure of the pressurizing agent, so that it becomes strong against impact such as falling-off, etc., and the effect of impact, etc. to the inner container is reduced. 
     In the case in which the lid is provided with an annular disk part covering the upper end surface of the outer container, a lid part closing the opening of the inner container, a fitting cylindrical part provided at the central part of the annular disk part, a closing part provided at the bottom part of the fitting cylindrical part, and a concentrate passage communicating between the inside of the fitting cylindrical part and the concentrate chamber when opening the closing part, the closing part is located inside, so that without a special discharge member, the consumer hardly opens or discharges. Therefore, the safety is enhanced. 
     In the case in which the ratchet mechanism is formed so as to perform idling when the cover part is rotated in the removing direction of the cap, even when rotating the cover part, the cap cannot be rotated in the removing direction. Thus, the unintentional removal of the cap can be suppressed. On the other hand, when removing the cover part, the valve can be removed from the pressurized product by removing the cap from the pressurized product, and the valve can be reused. 
     Further, by integrating the valve and the cap, when the cap is removed from the pressurized product, also, the valve is naturally removed from the pressurized product. In the case in which the cover part is provided with an engaging part in which the cover part is rotatably engaged with the cap around the axis of the cap, the falling-off of the cover part is suppressed and it can suppress that the user directly touches the cap. 
     In the case in which the lid is provided with the closing part pushing down by the mounting of the discharge member, a thin part provided around the closing part and forming a through hole by the mounting of the discharge member, and a plurality of coupling parts restricting the falling-off from the lid of the closing part, the through hole can be sealed by the closing part which was not fallen off, and the leakage of the concentrate can be suppressed. 
     The terms and descriptions used herein are used only for explanatory purposes and the present invention is not limited to them. Accordingly, the present invention allows various design-changes falling within the claimed scope of the present invention. 
     While the present invention may be embodied in many different forms, a number of illustrative embodiments are described herein with the understanding that the present disclosure is to be considered as providing examples of the principles of the invention and such examples are not intended to limit the invention to preferred embodiments described herein and/or illustrated herein. 
     While illustrative embodiments of the invention have been described herein, the present invention is not limited to the various preferred embodiments described herein, but includes any and all embodiments having equivalent elements, modifications, omissions, combinations (e.g., of aspects across various embodiments), adaptations and/or alterations as would be appreciated by those in the art based on the present disclosure. The limitations in the claims are to be interpreted broadly based on the language employed in the claims and not limited to examples described in the present specification or during the prosecution of the application, which examples are to be construed as non-exclusive. For example, in the present disclosure, the term “preferably” is non-exclusive and means “preferably, but not limited to.” In this disclosure and during the prosecution of this application, the terminology “present invention” or “invention” is meant as a non-specific, general reference and may be used as a reference to one or more aspects within the present disclosure. The language present invention or invention should not be improperly interpreted as an identification of criticality, should not be improperly interpreted as applying across all aspects or embodiments (i.e., it should be understood that the present invention has a number of aspects and embodiments), and should not be improperly interpreted as limiting the scope of the application or claims. In this disclosure and during the prosecution of this application, the terminology “embodiment” can be used to describe any aspect, feature, process or step, any combination thereof, and/or any portion thereof, etc. In some examples, various embodiments may include overlapping features.