Abstract:
A wet tissue packaging unit provided with: a storage container, which is capable of storing a continuous body of wet tissues in which separating parts are formed at each of prescribed intervals; a take-out port formation member having a take-out port formation part, which is attached to the opening of the storage container and in which is formed a take-out port for imparting resistance when the continuous body of wet tissues passes therethrough, and a storage space capable of storing the leading end of the continuous body of wet tissues that passed through the take-out port; and a cover section that freely opens and closes from the outside of the storage space, wherein there is provided a linking part for linking the storage space of the take-out port formation member and the space inside the storage container in an area other than the take-out port.

Description:
TECHNICAL FIELD 
       [0001]    The present invention relates to a wet tissue packaging unit that accommodates and packs a wet tissue continuing material body formed by a plurality of wet tissues, in an accommodation container. 
       BACKGROUND ART 
       [0002]    Hitherto, a wet tissue used for wiping hands or buttocks of babies, patients, and elderly people is widely known. The wet tissue is formed by impregnating a chemical solution and the like into a ground fabric. The wet tissue is accommodated in a sealed accommodation container so that the ground fabric may be maintained in a wet state by the chemical solution and the like, and is formed to be extracted from the accommodation container as needed basis. 
         [0003]    As the accommodation container, a cylindrical bottle type container has been widely used from the past. In many cases, the bottle type accommodation container accommodates a wet tissue continuing material body which is wound in a roll shape. The wet tissue continuing material body is provided with separating portions (i.e., dividing portions) by breaks of perforation lines or the like at predetermined intervals, and when the wet tissue continuing material body is divided at the dividing portion by cutting a part of the wet tissue continuing material body at the dividing portion or the like, a sheet-like wet tissue is obtained. 
         [0004]    In recent years, instead of the bottle type wet tissue packaging unit, a bag type wet tissue packaging unit provided with a bag-like accommodation container has been used in many cases. The bag type wet tissue packaging unit accommodates an interfolded wet tissue continuing material body in a bag body and is formed so that wet tissues forming the wet tissue continuing material body are extracted to the outside from an opening which is opened to the bag body. The opening of the bag body is formed so that a wet tissue is separated from the wet tissue continuing material body at the dividing portion formed in the wet tissue continuing material body. Further, the bag body is generally provided with a lid for opening and closing the opening. As the lid, for example, a flap-like lid which is formed by a film material such a material of the bag body has been widely used (e.g., Patent Literatures 1 and 2). 
       CITATION LIST 
     Patent Literatures 
     Patent Literature 1: JP 2004-196303 A 
     Patent Literature 2: JP 2010-173649 A 
     SUMMARY OF INVENTION 
     Technical Problem 
       [0005]    In the bag type wet tissue packaging unit formed as described above, the lid is attached to the vicinity of the surface of the bag body to close the opening when a user does not extract a wet tissue. In the wet tissue packaging unit, the inside of the bag body is kept in a sealed state by the lid such that the chemical solution and the like impregnated into the wet tissue accommodated in the bag body are prevented from volatilizing. 
         [0006]    In addition, at a position inside the lid, an extraction hole which applies a friction resistance to the wet tissue continuing material body when the wet tissue packaging unit is drawn out while passing therethrough is formed. Then, when a predetermined or higher resistance is applied to the wet tissue continuing material body during the extraction, the wet tissue continuing material body is divided at the dividing portion, which is close to the drawing end, due to the resistance. 
         [0007]    However, in the bag type wet tissue packaging unit, when the wet tissue is consumed, the volume of the wet tissue continuing material body inside the bag body decreases, the wet tissue continuing material body easily passes and hence the timing at which the wet tissue is divided at the dividing portion is delayed. Then, the front end of the wet tissue continuing material body that is divided and remains is excessively drawn out from the opening which has to be sealed by the lid, and the wet tissue packaging unit may not be reliably sealed. Accordingly, there is a problem in that the wet tissue may not be maintained in a wet state. 
         [0008]    The present invention is made in view of such problems, and an object thereof is to provide a wet tissue packaging unit, i.e. a wet tissue package, capable of further sealing an accommodation container and maintaining a wet tissue accommodated in the accommodation container in a wet state. 
       Solution to Problem 
       [0009]    The present invention may be summarized as below. 
         [0010]    (1) A wet tissue packaging unit including: an accommodation container that accommodates a wet tissue continuing material body having a dividing portion formed therein at a predetermined interval, and includes an opening formed to draw out a wet tissue divided from the wet tissue continuing material body at the dividing portion to the outside; an extraction hole forming member that is attached to the opening of the accommodation container and includes an extraction hole forming portion having an extraction hole formed to apply a resistance when the wet tissue continuing material body passes therethrough and an accommodation space which accommodates a front end of the wet tissue continuing material body that passes through the extraction hole; a lid that is provided at the outside of the accommodation space so as to freely close and open the accommodation space; and a communicating portion that allows the accommodation space of the extraction hole forming member and a space in the accommodation container to communicate with each other in an area excluding the extraction hole. 
         [0011]    (2) The wet tissue packaging unit according to (1), wherein the communicating portion is provided in a peripheral edge area of a bottom portion of the accommodation space. 
         [0012]    (3) The wet tissue packaging unit according to (2), wherein the extraction hole forming portion is formed in a plate that is convexly curved toward the inner side of the accommodation container, and the communicating portion is formed by the convexly swollen area. 
         [0013]    (4) The wet tissue packaging unit according to any of (1) to (3), wherein the attachment hole forming portion is supported by the attachment hole forming member in a cantilevered manner, and the communicating portion is formed or is widened as a free end of the attachment hole forming portion is turned toward the internal space of the accommodation container on the cantilevered portion as the center. 
         [0014]    (5) The wet tissue packaging unit according to (1), wherein the extraction hole forming member is attached to the accommodation container by allowing an attachment surface of the extraction hole forming member to face an inner surface of the accommodation container. 
       Advantageous Effects of Invention 
       [0015]    According to the wet tissue packaging unit of the present invention, even when the timing at which the wet tissue continuing material body is divided at the dividing portion is delayed and hence the extra front end portion of the wet tissue continuing material body is drawn out and is lengthened in the accommodation space, the front end portion of the wet tissue continuing material body may be pushed into the accommodation container through the communicating portion so as to be relieved. Since the lid is reliably closed and the accommodation container is sealed, it is possible to prevent the chemical solution and the like impregnated into the wet tissue continuing material body accommodated in the accommodation container from volatilizing. Further, according to the wet tissue packaging unit of the present invention, it is possible to provide the wet tissue in a state where the chemical solution and the like are always impregnated therein for a user. 
     
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         [0016]      FIG. 1  is an external perspective view illustrating the external configuration of a wet tissue packaging unit according to a first embodiment of the present invention. 
           [0017]      FIG. 2  is a cross-sectional view taken along the line A-A of  FIG. 1 . 
           [0018]      FIGS. 3A and 3B  are views illustrating the configuration of a wet tissue continuing material body, FIG.  3 A is a partially enlarged view illustrating the configuration of a separating portion of the wet tissue continuing material body, and  FIG. 3B  is an explanatory view illustrating the position of the separating portion of the wet tissue continuing material body. 
           [0019]      FIGS. 4A and 4B  are schematic views illustrating another embodiment of a wet tissue continuing material body,  FIG. 4A  is a view illustrating the wet tissue continuing material body which is folded in a so-called Z-shape, and  FIG. 4B  is a view illustrating the wet tissue continuing material body which is folded in a so-called WZ-shape. 
           [0020]      FIGS. 5A and 5B  are external perspective views illustrating the external configuration of an extraction hole forming member provided with a lid,  FIG. 5A  is an external perspective view illustrating a state where the lid is closed, and  FIG. 5B  is an external perspective view illustrating a state where the lid is opened. 
           [0021]      FIGS. 6A and 6B  are external perspective views illustrating the external configuration of an extraction hole forming member provided with a lid,  FIG. 6A  is an external perspective view illustrating a state where the lid is opened and a partitioning portion is removed, and  FIG. 6B  is an external perspective view illustrating the external configuration in a case where the extraction hole forming member is seen from the lower surface thereof. 
           [0022]      FIGS. 7A and 7B  are cross-sectional views of the extraction hole forming member,  FIG. 7A  is a cross-sectional view taken along the line B-B of  FIG. 5B , and  FIG. 7B  is a cross-sectional view taken along the line C-C of  FIG. 6A . 
           [0023]      FIGS. 8A ,  8 B, and  8 C are explanatory views illustrating a procedure of removing the partitioning portion,  FIG. 8A  is an explanatory view illustrating a state before the partitioning portion is removed,  FIG. 8B  is an explanatory view illustrating a state where the partitioning portion is being removed, and  FIG. 8C  is an explanatory view illustrating a state where the partitioning portion is removed. 
           [0024]      FIGS. 9A and 9B  are explanatory views illustrating a procedure when a wet tissue is extracted and the operational effects of the wet tissue packaging unit according to the present invention,  FIG. 9A  is an explanatory view illustrating a state of the wet tissue packaging unit at the time of putting a finger into a pinching hole, and  FIG. 9B  is an explanatory view illustrating a state where the front end of the wet tissue continuing material body is being pinched. 
           [0025]      FIG. 10  is an explanatory view illustrating a state where the wet tissue continuing material body is drawn out while passing through an extraction hole and the like. 
           [0026]      FIGS. 11A ,  11 B, and  11 C are explanatory views illustrating a procedure when a wet tissue is extracted and disclosing the operation/working-effect of the wet tissue packaging unit according to the present invention,  FIG. 11A  is an explanatory view illustrating a state where a wet tissue is being extracted from the pinching hole,  FIG. 11B  is an explanatory view illustrating a state where the wet tissue is extracted, and  FIG. 11C  is an explanatory view illustrating a state where wet tissues are accommodated in an accommodation space. 
           [0027]      FIGS. 12A and 12B  are views illustrating the external configuration of an extraction hole forming member of a wet tissue packaging unit according to a second embodiment of the present invention,  FIG. 12A  is an external perspective view illustrating a state where a lid is opened, and  FIG. 12B  is a top view illustrating a state where a closing portion is removed. 
           [0028]      FIGS. 13A and 13B  are external perspective views illustrating an extraction hole forming member of a wet tissue packaging unit according to a third embodiment of the present invention,  FIG. 13A  is an external perspective view illustrating a state where a lid is closed, and  FIG. 13B  is an external perspective view illustrating a state where the lid is opened. 
           [0029]      FIGS. 14A and 14B  are external perspective views illustrating the external configuration of an extraction hole forming member provided with a lid,  FIG. 14A  is an external perspective view illustrating a state where the lid is opened and a partitioning portion is removed, and  FIG. 14B  is an external perspective view illustrating the external configuration in a case where the extraction hole forming member is seen from the lower surface thereof. 
           [0030]      FIGS. 15A ,  15 B, and  15 C are explanatory views illustrating a procedure of extracting a wet tissue and illustrating the operation of a wet tissue packaging unit according to a third embodiment,  FIG. 15A  is an explanatory view illustrating a state before the wet tissue is drawn out,  FIG. 15B  is an explanatory view illustrating a state where the wet tissue is being drawn out, and  FIG. 15C  is an explanatory view illustrating a state where wet tissues are accommodated in an accommodation space. 
           [0031]      FIGS. 16A and 16B  are external perspective views illustrating an extraction hole forming member of a wet tissue packaging unit according to a fourth embodiment of the present invention,  FIG. 16A  is an external perspective view illustrating a state where a lid is opened and a partitioning portion is removed, and  FIG. 16B  is an external perspective view illustrating the external configuration in a case where the extraction hole forming member is seen from the lower surface thereof. 
           [0032]      FIGS. 17A ,  17 B, and  17 C are explanatory views illustrating the operation of the wet tissue packaging unit according to the fourth embodiment,  FIG. 17A  is an explanatory view illustrating a state before a wet tissue is drawn out,  FIG. 17B  is an explanatory view illustrating a state where the wet tissue is being drawn out, and  FIG. 17C  is an explanatory view illustrating a state where wet tissues are accommodated in an accommodation space. 
       
    
    
     DESCRIPTION OF EMBODIMENTS 
       [0033]    The configuration of a first embodiment of a wet tissue packaging unit, i.e. a wet tissue package, according to the present invention will be described with reference to  FIGS. 1 to 11C . Further, it is assumed that the up-down direction, the forward-rearward direction (or front-back direction), and the right-left direction in the present specification indicate the up-down direction, the forward-rearward direction, and the right-left direction illustrated in  FIG. 1 , respectively. Furthermore an example, in which a bag body is used as one kind of accommodation container, is described in the present specification. Any member other than the bag body may be arbitrarily selected to be used as the accommodation container. For example, as the accommodation container, a container that is formed of a resin material such as plastic may be used. In the present specification, the “unused item of the wet tissue packaging unit” indicates that a wet tissue continuing material body, or a continuous body of wet tissues, accommodated in the accommodation container in the manufacturing process has never been extracted from the accommodation container and a partitioning portion and a closing portion to be described later are not removed. 
         [0034]    As illustrated in  FIG. 1 , a wet tissue packaging unit  1  according to this embodiment includes a bag body  3  (i.e., accommodation container) having an opening  2  that is opened to the upper portion thereof, an extraction hole forming member  4  which is attached to the inner surface of the bag body  3  by an arbitrary method such as hot-melt, and a lid  5  which is attached to the extraction hole forming member  4 . Further, as illustrated in  FIG. 2 , the wet tissue packaging unit  1  accommodates a wet tissue continuing material body  6  inside the bag body  3 . 
         [0035]    First, the configuration of the wet tissue continuing material body  6  will be described. In the present specification, the “wet tissue continuing material body” indicates a wet tissue continuing material body that is piled in a folded shape by a method to be described later and is accommodated in the bag body  3 , and a “wet tissue” indicates both a sheet-like tissue separated from the wet tissue continuing material body  6  and a sheet-like tissue forming the wet tissue continuing material body  6 . This embodiment and second to fourth embodiments to be described later are described by using a wet tissue continuing material body that is piled in a folded shape as an example of the wet tissue continuing material body, but the configuration of the wet tissue continuing material body is not limited thereto. For example, as the wet tissue continuing material body, a body that is wound in a roll shape or has the other configurations may be used. 
         [0036]    The wet tissue continuing material body  6  is formed by impregnating a chemical solution and the like into a ground fabric formed by paper made from synthetic fabric or natural fabric, woven cloth, or non-woven cloth. As the chemical solution and the like, alcohol, water, or the mixture thereof may be exemplified. Further, the chemical solution may be arbitrarily selected from perfume, antibacterial agent, refresher, surfactant, antiseptic agent, pigment, antifoam agent, antioxidizing agent, clarifying agent, solubilizing agent, pH adjuster, and the like and mixed therewith. Furthermore, the above-described materials of the ground fabric and the chemical solution and the like forming the wet tissue continuing material body  6  are merely examples, and the materials other than the above-described materials may be arbitrarily selected to be used. 
         [0037]    Structures of the wet tissue continuing material body  6  include both followed structures. In one kind of the structures, a wet tissue continuing material body is formed so that wet tissues are connected to each other by the perforation lines or the like, and in another kind of the structures, a wet tissue continuing material body that is formed so that each of separate wet tissues is bent and folded in a Z-shape or the like to be described later and the plurality of folded wet tissues contact one another. In addition, in the present specification, the separation of the wet tissue from the wet tissue continuing material body  6  indicates that, for example, in a case where the wet tissues are connected by the perforation lines or the like, the wet tissue continuing material body  6  is torn at the position of the perforation lines or the like and a portion that becomes the wet tissue is separated from the wet tissue continuing material body  6 . Further, the separation indicates that, in a case where the wet tissue continuing material body  6  is formed to have a structure in which each of the separate wet tissues is appropriately folded in a Z-shape to be described later and the plurality of wet tissues contact one another, the front end of single wet tissue is took off from the contact portion of the plurality of wet tissues so as to be separated from the wet tissue continuing material body  6 . Furthermore, a portion where the wet tissue is separated from the wet tissue continuing material body  6  is called a dividing portion. 
         [0038]    A specific example of the wet tissue continuing material body  6  will be described. The wet tissue continuing material body  6  illustrated in  FIGS. 3A and 3B  includes first turnback portions  8  and second turnback portions  9  as a plurality of turnback portions and is piled in a continuously folded shape. The wet tissue continuing material body  6  is provided with separating portions  10  (i.e., dividing portions) at predetermined intervals. The separating portion  10  is formed to be separated (i.e., divided) by a tensile force that is applied when the front end of the wet tissue continuing material body  6  is drawn out.  FIG. 3A  illustrates an example of the separating portion  10  of the wet tissue continuing material body  6  according to this embodiment. The separating portion  10  is formed to be separated by a tensile force applied to the wet tissue continuing material body  6  when the front end of the wet tissue continuing material body  6  is drawn out. As illustrated in  FIG. 3A , the separating portion  10  is provided with a plurality of spaces  11  at predetermined intervals in the right-left direction of the wet tissue continuing material body  6 , and connecting portions  12  which connect the wet tissues  7  forming the wet tissue continuing material body  6  are formed between the spaces  11 . In this embodiment, the connecting portions  12  are formed at three positions with respect to the right-left direction of the wet tissue continuing material body  6 , but the shape of the connecting portion  12  is not limited thereto. Further, the separating portion  10  may be formed to be separated when a tensile force is applied thereto. For example, the separating portion  10  may be formed in a perforation line shape by reducing the interval between the space  11  and the connecting portion  12  or in the other shapes. 
         [0039]      FIG. 3B  is an explanatory view illustrating where the separating portion  10  is located in the wet tissue continuing material body  6 . In this drawing, the points indicated by black circles represent the positions of the separating portions  10 . As illustrated in  FIG. 3B , the wet tissue continuing material body  6  is formed so that the separating portion  10  is located at the center portion between the first turnback portion  8  and the second turnback portion  9 , and as the vertical relation, a portion with the separating portion  10  and a portion without the separating portion  10  are alternated. 
         [0040]    In the above-described example, the case where the separating portion  10  is formed as the dividing portion in the wet tissue continuing material body  6 . However, the shape of the wet tissue continuing material body  6  is not limited thereto and may be formed in the other shapes. Specifically, as exemplified below, the wet tissue continuing material body  6  may be formed so that a predetermined portion where two folded separate wet tissues overlap each other becomes the separating portion (i.e., the dividing portion). An example of the configuration of another shape of the wet tissue continuing material body  6  is illustrated in  FIGS. 4A and 4B .  FIG. 4A  illustrates a wet tissue continuing material body which is folded in a so-called Z-shape, and  FIG. 4B  illustrates the configuration of a wet tissue continuing material body which is folded in a so-called WZ-shape. Further, the structure of folding the wet tissue continuing material body  6  may be a structure in which when a wet tissue  7  is raised, the next wet tissues  7  are sequentially and continuously raised, and after the wet tissue  7  is divided from the next wet tissue  7 , the next wet tissue  7  is in the state in which its end pops up from an extraction hole  26  to be described later (hereinafter, this state is referred to as “pop-up”). The configuration may also have a W-shape or the other shapes other than the above-described Z-shape and the WZ-shape. 
         [0041]    As illustrated in  FIG. 4A , the wet tissue continuing material body  6  having a Z-shaped folded structure is formed by a plurality of layered wet tissues which are respectively folded in a Z-shape. In addition, the wet tissue continuing material body  6  having the Z-shaped folded structure is piled so that an upper surface  7   c  of a termination end of a wet tissue  7   a  overlaps a lower surface  7   d  of a start end of the next wet tissue  7   b . When the wet tissue  7   a  is drawn out, the termination end of the wet tissue  7   a  acts to raise the start end of the next wet tissue  7   b . Then, when the start end of the next wet tissue  7   b  is drawn out from the extraction hole  26  to be described later to the upper portion of the extraction hole  26 , the termination end of the wet tissue  7   a  and the start end of the next wet tissue  7   b  are divided from each other. That is, a portion where the termination end of the wet tissue  7   a  and the start end of the next wet tissue  7   b  overlap forms the separating portion (i.e., the dividing portion), and the wet tissue  7   a  is separated from the wet tissue continuing material body  6  having the next wet tissue  7   b  at the dividing portion. 
         [0042]    As illustrated in  FIG. 4B , the wet tissue continuing material body  6  having a WZ-shaped folded structure is formed by alternately piling a wet tissue  7   e  folded in a Z-shape and a wet tissue  7   f  folded in a W-shape. In the case of  FIG. 4B , the wet tissue continuing material body  6  is piled so that an upper surface  7   g  of a termination end of a wet tissue  7   e  folded in a Z-shape overlaps a lower surface  7   h  of a start end of the next wet tissue  7   f  folded in a W-shape. When the wet tissue  7   e  folded in a Z-shape is drawn out, the termination end of the wet tissue  7   e  acts to raise the start end of the next wet tissue  7   f  folded in a W-shape. Then, when the start end of the wet tissue  7   f  folded in a W-shape is drawn out from the extraction hole  26  to be described later to the upper portion of the extraction hole  26 , the termination end of the wet tissue  7   e  folded in a Z-shape and the start end of the wet tissue  7   f  folded in a W-shape are divided from each other. Furthermore, the wet tissue is raised by the same operation even when the start end of a wet tissue  7   i  folded in a Z-shape is drawn out after the wet tissue  7   f  folded in a W-shape is drawn out. That is, a portion where the termination end of the wet tissue  7   e  overlaps the start end of the next wet tissue  7   f  and a portion where the termination end of the wet tissue  7   f  overlaps the start end of the next wet tissue  7   i  form the separating portions (i.e., the dividing portions), and the wet tissues  7   e  and  7   f  are separated from the wet tissue continuing material body  6  having the next wet tissues  7   f  and  7   i  at the dividing portions. 
         [0043]    Furthermore, the configuration of the wet tissue continuing material body  6  is not limited to the above-described configuration. The configuration of the wet tissue continuing material body  6  may be formed in any shape as long as the wet tissue continuing material body may be accommodated in the bag body  3 . For example, in this embodiment, the position of the separating portion  10  is located at the center portion between the first turnback portion  8  and the second turnback portion  9 . However, the separating portion  10  may be disposed at a position other than the center portion. Further, the separating portion  10  may be disposed at a position where the first turnback portion  8  or the second turnback portion  9  is formed. Further, in this embodiment, as for the vertical relation of the wet tissue continuing material body  6 , a portion with the separating portion  10  and a portion without the separating portion  10  are alternated. However, the portions with the separating portion  10  may overlap each other in the up-down direction. Further, the separating portion  10  may be located at both positions where the first turnback portion  8  and the second turnback portion  9  are formed. Furthermore, the separating portion may have a configuration other than the above-described configuration. 
         [0044]    Next, the configuration of the bag body  3  will be described. The bag body  3  is an accommodation container that accommodates the wet tissue continuing material body  6  therein. The bag body  3  is formed in, for example, a pillow-like bag shape by a plastic film having air-tightness and flexibility or the like. As illustrated in  FIG. 1 , the bag body  3  is formed so that both ends in the forward-rearward direction are air-tightly sealed by heat-seal or the like. 
         [0045]    As illustrated in  FIG. 2 , the bag body  3  is formed in a double-layer structure with an inner layer  13  and an outer layer  14 . In the inner layer  13 , for example, a film formed of plastic such as polyethylene, polypropylene, polyester, polyamide, vinyl chloride, vinylidene chloride, and cellophane, a laminate film formed of two or more of these materials, or a complex film formed by laminating an aluminum foil on these single or complex laminate films may be used. In the outer layer  14 , for example, a polyethylene terephthalate (PET) film may be used. Furthermore, in this embodiment, the bag body  3  formed by two layers, that is, the inner layer  13  and the outer layer  14  is used, but the structure of the bag body  3  is not limited thereto. For example, the bag body  3  may be formed as a multi-layer structure having three or more layers or a single-layer structure. Further, the materials of the inner layer  13  and the outer layer  14  are not limited to the above-described materials. 
         [0046]    As illustrated in  FIGS. 1 and 2 , the bag body  3  is provided with an opening  2 . Through the opening  2 , the wet tissue  7  separated from the wet tissue continuing material body  6  that is accommodated in the bag body  3  as the accommodation container is drawable to the outside. In this embodiment, the opening  2  is formed as a square opening in the upper portion of the bag body  3 , but the shape of the opening  2  is not limited thereto. Further, the opening  2  may be formed to allow the wet tissue  7  to be drawable therethrough to the outside, and the size of the opening  2  may be arbitrarily adjusted. 
         [0047]    As illustrated in  FIG. 2 , the extraction hole forming member  4  is attached to the inside of the bag body  3 . The extraction hole forming member  4  is disposed at such a position that the positions of a pinching hole  22  to be described later and the extraction hole  26  coincide with the position of the opening  2  of the bag body  3  so as to align themselves. As a method of attaching the extraction hole forming member  4  to the bag body  3 , for example, a method using hot-melt or the like may be exemplified, but the present invention is not limited thereto, and various methods may be arbitrarily selected. Further, in the present specification, the description is provided by using the example in which the extraction hole forming member is disposed at the position so that the positions of the pinching hole and the extraction hole coincide with the position of the opening of the bag body so as to align themselves. The positions of the pinching hole, the extraction hole, and the opening may not coincide with each other. 
         [0048]    As illustrated in  FIG. 5A , the extraction hole forming member  4  and the lid  5  according to this embodiment may be integrally molded with each other through a hinge portion  5   a.    
         [0049]    For example, the extraction hole forming member  4  is formed of a thermoplastic resin material such as polyethylene and polypropylene. In this embodiment, the description is provided by using the extraction hole forming member  4  which is integrally molded by an injection molding method or the like, but the extraction hole forming member  4  may also be formed by the combination of the separately molded members. Further, the extraction hole forming member  4  may be formed by a method other than the above-described method. 
         [0050]    As illustrated in  FIGS. 5A ,  5 B, and  6 A, the extraction hole forming member  4  includes a base plate  21  as a base portion for attaching the extraction hole forming member  4  to the bag body  3 , an accommodation space  23  which accommodates a front end  6   a , or a leading end  6   a , of the wet tissue continuing material body  6  through the pinching hole  22  through which the wet tissue  7  is drawn out from the bag body  3 , and an extraction hole forming portion  27  having the extraction hole  26  which is opened to separate the wet tissue  7  at the separating portion  10  of the wet tissue continuing material body  6 . 
         [0000]    Further, the extraction hole forming member  4  provided in this example includes a partitioning portion  24  and a fragile portion  25 . The partitioning portion  24  is provided or arranged to close the pinching hole  22  and partitions the accommodation space  23  into a plurality of sections. The fragile portion  25  is formed at the peripheral edge portion of the partitioning portion  24  and is broken when a predetermined shear force is applied thereto. 
         [0051]    The base plate  21  is formed in a flat square plate shape, and is formed so that the upper surface thereof becomes an attachment surface when the base plate  21  is attached to the inner surface of the bag body  3 . The reference numeral  28  of  FIG. 5A  indicates the attachment surface. In the state where the extraction hole forming member  4  is attached to the bag body  3 , the attachment surface  28  provided in the base plate  21  faces the inner surface of the bag body  3 . Further, the base plate  21  is integrally molded with the lid  5  through the hinge portion  5   a . The base plate  21  is provided with an extraction concave portion  29  at the substantially center portion thereof. The extraction concave portion  29  is formed in a concave shape so that the position thereof in the height direction is lower than the position of the base plate  21  at one step lower. Further, the extraction concave portion  29  is formed in a circular shape in the top view of the extraction hole forming member  4 . 
         [0052]    A vertical wall portion  30  is uprightly formed in the extraction concave portion  29 . The vertical wall portion  30  is formed in a circular shape in the top view of the extraction hole forming member  4 . Further, the vertical wall portion  30  is formed so that the outer diameter of the vertical wall portion  30  is smaller than the inner diameter of the extraction concave portion  29 . Furthermore, the vertical wall portion  30  is formed at a position where the center position of an inner wall  29   a  of the extraction concave portion  29  coincides with the center position of the vertical wall portion  30 . That is, the vertical wall portion  30  is formed so that a circle drawn by the inner wall  29   a  of the extraction concave portion  29  is concentric with a circle drawn by the vertical wall portion  30 . Further, as illustrated in  FIGS. 7A and 7B , the vertical wall portion  30  is formed so that the position of the upper surface thereof in the height direction is lower than the position of the upper surface of the base plate  21  in the height direction and when the lid  5  is closed, the upper surface of the lid  5  and the upper surface of the base plate  21  are substantially flush with each other. In the present specification, the description is provided by using the example in which the center position of the vertical wall portion  30  coincides with the center position of the inner wall  29   a , but the positions thereof may not coincide with each other. 
         [0053]    As illustrated in  FIG. 6A , the pinching hole  22  allows a user to pinch the front end  6   a  of the wet tissue continuing material body  6  forming the wet tissues  7  when the user extracts the wet tissue  7  so that the wet tissue  7  is drawn out from the bag body  3 . The pinching hole  22  is opened to the inner peripheral side of the vertical wall portion  30 . The pinching hole  22  is formed in a size in which the user may pinch the front end  6   a  of the wet tissue continuing material body  6  accommodated in the bag body  3  with a finger to extract the front end  6   a . In this embodiment, the hole diameter of the pinching hole  22  is substantially the same as the inner diameter of the vertical wall portion  30 . Further, the hole diameter of the pinching hole  22  may be determined so that the user may pinch the front end  6   a  of the wet tissue continuing material body  6  with a finger to extract the front end  6   a , and is not limited to the size and shape of this embodiment. That is, sizes and shapes may be arbitrarily selected. For example, when the pinching hole  22  is formed to be large, the user easily inserts a finger into the pinching hole  22 , and hence the front end  6   a  of the wet tissue continuing material body  6  is easily drawn out during the drawing, thereby enhancing handleability. In contrast, when the pinching hole  22  is formed to be small, the extraction hole forming member  4  may be decreased in size, and the manufacturing cost of the extraction hole forming member  4  may be largely reduced. The shape of the pinching hole in the top view of the pinching hole may be a shape other than a circular shape. 
         [0054]    As illustrated in  FIG. 5B , in a case where the wet tissue packaging unit  1  is the unused item, the pinching hole  22  is closed by the partitioning portion  24  to be described later and is opened by removing the partitioning portion  24  as illustrated in  FIG. 6A . 
         [0055]    The accommodation space  23  accommodates the front end  6   a  of the wet tissue continuing material body  6  through the pinching hole  22  and is a space indicated by the dotted line in  FIG. 7B . The accommodation space  23  is sealed together with the internal space of the bag body  3 , with a gap, when the lid  5  is closed. Regarding the wet tissue packaging unit  1 , in the case where the wet tissue packaging unit  1  is the unused item, the pinching hole  22  is closed by the partitioning portion  24 . Therefore, the accommodation space  23  is partitioned into a space that communicates with the inside of the bag body  3  and a space that communicates with the outside of the bag body  3  by the partitioning portion  24 . Further, when the partitioning portion  24  is removed and the pinching hole  22  is opened, the accommodation space  23  is formed as a space indicated by the dotted line in  FIG. 7B . 
         [0056]    The partitioning portion  24  partitions the bag body  3  into the inside and the outside by closing the pinching hole  22 . Further, the partitioning portion  24  also separates the accommodation space  23  into the space that communicates with the inside of the bag body  3  and the space that communicates with the outside of the bag body  3 . As illustrated in  FIGS. 5B and 7A , the partitioning portion  24  is formed on the inner peripheral side of the vertical wall portion  30 . Further, a tab  31  is integrally formed with the upper portion of the partitioning portion  24 . The tab  31  is formed in an annular shape and is formed so that a part of the inner portion thereof is connected to the partitioning portion  24 . 
         [0057]    The fragile portion  25  is provided in the peripheral edge portion of the partitioning portion  24 . As illustrated in  FIG. 7A , the fragile portion  25  is formed at the peripheral edge portion of the partitioning portion  24  in a groove shape that is thinner than a thickness of the partitioning portion  24 , and is formed to be broken by a stress that occurs due to a predetermined shear force when the shear force is applied. Here, the “predetermined shear force” is a force having a conventionally well-known magnitude needed for the shear failure of the fragile portion  25  provided at the peripheral edge portion of the partitioning portion  24 . 
         [0058]    The extraction hole forming portion  27  separates the wet tissue  7  at the separating portion  10  provided in the wet tissue continuing material body  6  and allows the front end  6   a  of the wet tissue continuing material body  6  to pop up. As illustrated in  FIGS. 2 and 6B , the extraction hole forming portion  27  is formed in a plate shape that is convexly curved toward the inner side of the bag body  3  and has a pair of leg portions  32   a  and  32   b  at both ends of the curved end. Further, the pair of leg portions  32   a  and  32   b  is integrally formed with the base plate  21  on the lower side of the base plate  21  and is hence integrally formed with the base plate  21 . The extraction hole forming portion  27  is disposed on the lower side of the base plate  21  so that the extraction hole  26  is located below a point where the extraction concave portion  29  of the base plate  21  is formed. Furthermore, the extraction hole forming portion  27  is formed in a curved shape. 
         [0059]    As illustrated in  FIG. 6B , in the extraction hole forming portion  27 , the extraction hole  26  is opened to the substantially center portion of the extraction hole forming portion  27  in the forward-rearward direction. The extraction hole  26  is formed in an elongated hole shape that extends in the right-left direction. The extraction hole  26  is formed in a size in which, when the front end  6   a  of the wet tissue continuing material body  6  or the like passes therethrough, a friction resistance can be applied to the wet tissue continuing material body  6  that passes therethrough. Further, in the extraction hole forming portion  27 , a first slit  33  and a second slit  34  are respectively provided in both ends of the extraction hole  26  in the forward-rearward direction with respect to the extraction hole  26 . The first and second slits  33  and  34  are formed in elongated hole shapes that extend in the right-left direction, and the widths thereof in the forward-rearward direction are smaller than the width of the extraction hole  26  in the forward-rearward direction. Furthermore, the first and second slits  33  and  34  are formed so that the widths of the first and second slits  33  and  34  are the same. The first and second slits  33  and  34  are also formed so that, when the front end  6   a  of the wet tissue continuing material body  6  passes therethrough, a resistance can be applied to the front end  6   a  of the wet tissue continuing material body  6  that passes therethrough. 
         [0060]    Furthermore, in the extraction hole forming portion  27 , a first protruding piece  35  is provided between the extraction hole  26  and the first slit  33 , and a second protruding piece  36  is provided between the first slit  33  and the second slit  34 . The first protruding piece  35  includes a left protruding piece  35   a  that extends from the left to the right and a right protruding piece  35   b  that extends from the right to the left, and a first void  37  is provided between the left protruding piece  35   a  and the right protruding piece  35   b . Further, the second protruding piece  36  includes a left protruding piece  36   a  that extends from the left to the right and a right protruding piece  36   b  that extends from the right to the left, and a second void  38  is provided between the left protruding piece  36   a  and the right protruding piece  36   b . The first and second voids  37  and  38  are formed to be located on the substantially same straight line in the right-left direction. 
         [0061]    As illustrated in  FIGS. 2 and 6A , the extraction hole forming member  4  is provided with a relief portion  39  (i.e., communicating portion or linking part). The relief portion  39  allows a portion of the front end  6   a  which is not accommodated in the accommodation space  23  to be pushed into the bag body  3  so as to be relieved when the front end  6   a  of the wet tissue continuing material body  6  is pushed into the accommodation space  23 . The relief portion  39  is formed to be surrounded by the base plate  21 , the extraction hole forming portion  27  that is convexly curved, and the leg portions  32   a  and  32   b  and is formed as a communicating portion that allows the accommodation space  23  and the internal space of the bag body  3  to communicate with each other in an area excluding the extraction hole  26  and the like. The relief portion  39  is formed in a convexly curved shape by both sides of a portion of a plate-like attachment hole forming portion that is swollen or expanded in a convex shape. Further, in this embodiment, each of the relief portions  39  is formed in the leftward direction and in the rightward direction, but the points where the relief portions  39  are formed may be, for example, points in the forward direction and in the rearward direction, or the other positions. Furthermore, the size of the relief portion  39  may be arbitrarily selected to be used as long as the front end  6   a  of the wet tissue continuing material body  6  may move between the accommodation space  23  and the internal space of the bag body  3 . The number of relief portions  39  may also be arbitrarily selected. 
         [0062]    Furthermore, the extraction hole forming portion  27  of this embodiment is integrally formed with the pair of leg portions  32   a  and  32   b  and the base plate  21 , but may also be formed separately from the base plate or have the other structures. 
         [0063]    The lid  5  is provided on the extraction hole forming member  4  in an openable and closable manner and is configured to close or open the accommodation space  23  provided in the extraction hole forming member  4 . Further, the extraction hole forming member  4  and the lid  5  may be molded separately from each other, and may also be molded integrally with each other by a structure other than hinges in a case where they are formed integrally with each other. The lid  5  is formed of the same material as that of the extraction hole forming member  4 , for example, a thermoplastic resin material such as polyethylene and polypropylene. 
         [0064]    As illustrated in  FIG. 6A , the lid  5  is formed integrally with the extraction hole forming member  4  through the hinge portion  5   a . The shape of the lid  5  is formed as a circular shape in the top view of the lid  5 . Further, a side wall  41  is provided in the peripheral edge portion of the lid  5 . The side wall  41  is formed along the peripheral edge portion in the plan view of the lid  5 . In this embodiment, the side wall  41  is formed in a circular shape. The side wall  41  is formed so that the center position thereof when the lid  5  is closed is at the same position as those of the pinching hole  22  and the extraction hole  26 . Furthermore, the side wall  41  is formed so that the inner diameter thereof is substantially the same as the outer diameter of the vertical wall portion  30  or greater than the outer diameter of the vertical wall portion  30  so that the inside of the bag body  3  may be sealed by fitting the outer peripheral surface of the vertical wall portion  30  with the inner peripheral surface of the side wall  41  when the lid  5  is closed. 
         [0065]    Next, in the wet tissue packaging unit  1  according to this embodiment, a procedure of removing the partitioning portion  24  will be described. In a case where the wet tissue packaging unit  1  according to this embodiment is an unused item that the user does not use yet, as illustrated in  FIG. 8A , the partitioning portion  24  of the extraction hole forming member  4  is present. In this case, the pinching hole  22  is closed by the partitioning portion  24 , and the accommodation space  23  is also partitioned by the partitioning portion  24 . Further, the lid  5  is generally closed, but a state where the lid  5  is opened is illustrated in  FIG. 8A . 
         [0066]    When the user initially uses the wet tissue packaging unit  1 , first, the partitioning portion  24  is removed. In the case of removing the partitioning portion  24 , the user pinches the tab  31  with a finger and applies a force in the A direction in  FIG. 8B . In this case, since the tab  31  is disposed above the partitioning portion  24 , when the user applies the force in the A direction, a force in the B direction is applied to the partitioning portion  24 . The force in the B direction is applied to the fragile portion  25  as shear force. 
         [0067]    When the shear force in the B direction is applied to the fragile portion  25  by the force in the A direction applied by the user, since the fragile portion  25  is formed to be thinner than the partitioning portion  24 , a stress applied to the fragile portion  25  becomes greater than a stress applied to positions other than the fragile portion  25 . Therefore, the fragile portion  25  is likely to undergo shear failure, and undergoes shear failure when a predetermined stress is applied thereto such that the partitioning portion  24  is removed from the extraction hole forming member  4 . The fragile portion  25  gradually undergoes shear failure from the position to which the predetermined shear force is applied and the entire fragile portion  25  finally undergoes shear failure. When the shear failure of the entire fragile portion  25  occurs, as illustrated in  FIG. 8C , the partitioning portion  24  is removed such that the pinching hole  22  is opened. 
         [0068]    As illustrated in  FIG. 8C , when the partitioning portion  24  is removed as described above, the pinching hole  22  is opened and the accommodation space  23  which has been partitioned by the partitioning portion  24  is formed as a space. When the partitioning portion  24  is removed as described above, the front end  6   a  of the wet tissue continuing material body  6  that is accommodated in the bag body  3  may be extracted. 
         [0069]    Next, a procedure of drawing out the wet tissue continuing material body  6  by the user will be described. When the pinching hole  22  is opened in the above-described procedure, the extraction hole forming portion  27  and the extraction hole  26  of the extraction hole forming member disposed inside the bag body  3  are visible through the pinching hole  22  from the outside of the bag body  3 . This is because the extraction hole forming member  4  is attached at the position which coincides with the position of the pinching hole  22  in the forward-rearward and right-left directions and the position of the opening  2  of the bag body  3  in the forward-rearward and right-left directions. 
         [0070]    As illustrated in  FIG. 9A , in the wet tissue packaging unit  1 , there may be cases where the front end  6   a  of the wet tissue continuing material body  6  is not drawn above the extraction hole  26  of the extraction hole forming portion  27 . For example, there is a case where the wet tissue packaging unit  1  is an unused item, and a case where the front end  6   a  of the wet tissue continuing material body  6  inside the bag body  3  does not pop up but falls below the extraction hole forming portion  27 . 
         [0071]    In these cases, the user draws out the front end  6   a  of the wet tissue continuing material body  6 . When the front end  6   a  is drawn, the user puts a finger into the pinching hole  22  which is opened in the precedent procedure and pushed down the extraction hole forming portion  27  or the like to move the extraction hole forming member  4  (including the upper portion of the bag body  3 ) in the C direction in  FIG. 9A  so as to allow the lowest portion of the lower end surface of the extraction hole forming portion  27  to approach the upper surface of the wet tissue continuing material body  6 . Further, in  FIG. 9A , regarding the extraction hole forming member indicated by the two-dotted chain line, as an example in which the lowest portion is caused to approach the upper surface of the wet tissue continuing material body  6 , a state where the lowest portion of the lower end surface of the extraction hole forming portion  27  is brought into contact with the upper surface of the wet tissue continuing material body  6  is illustrated. 
         [0072]    Next, as illustrated in  FIG. 9B , the user pinches the front end  6   a  of the wet tissue continuing material body  6  with the fingertip to raise it through the extraction hole  26 . At this time, it is desirable that the end portion of the front end  6   a  of the wet tissue continuing material body  6  be located to extend in the forward-rearward direction and be located at substantially the center portions of the pinching hole  22  and the extraction hole  26  in the right-left direction. The wet tissue continuing material body  6  raised through the extraction hole  26  is drawn out while widening in the forward-rearward and right-left directions as illustrated in  FIG. 10 . Therefore, a portion of the wet tissue continuing material body  6  which widens in the forward-rearward direction passes through the first and second voids  37  and  38  and the first and second slits  33  and  34  other than the extraction hole  26 , and is drawn above the extraction hole forming member  4 . Further, in the following description, the extraction hole  26 , the first void  37 , the second void  38 , the first slit  33 , and the second slit  34  may be referred to as “the extraction hole  26  and the like”. Furthermore, in the concept of the present invention, “the extraction hole  26  and the like” are referred to as “the extraction hole”. 
         [0073]    At this time, the wet tissue continuing material body  6  is drawn out while applying a force in the D direction ( FIG. 11A ) to the first and second protruding pieces  35  and  36  by a resistance that occurs between the first and second protruding pieces  35  and  36 . Therefore, while the wet tissue continuing material body  6  is drawn out, the force in the D direction is applied to the first and second protruding pieces  35  and  36  such that the first and second protruding pieces  35  and  36  are elastically deformed by the force in the D direction. 
         [0074]    As illustrated in  FIG. 11B , when the separating portion  10  in the wet tissue continuing material body  6  passes through the extraction hole  26  and the like, a force in the E direction in  FIG. 11B  is applied to the front end  6   a  of the wet tissue continuing material body  6  (the wet tissue  7 ) on the side lower than the separating portion  10  by the resistance applied when passing through the extraction hole  26  and the like and the restoring forces of the first and second protruding pieces  35  and  36 . On the other hand, a force in the F direction in  FIG. 11B  which is applied as the user raises the wet tissue  7  is applied to the wet tissue  7  on the side upper than the separating portion  10 . Therefore, the force in the E direction and the force in the F direction are applied to the separating portion  10  such that the wet tissue  7  on the side upper than the separating portion  10  is separated from the wet tissue  7  on the side lower than the separating portion  10  and the wet tissue  7  on the side upper than the separating portion  10  is extracted to the outside of the bag body  3  as a single sheet-like wet tissue  7 . Further, the wet tissue  7  on the side lower than the separating portion  10  becomes a wet tissue  7  forming the front end  6   a  of the wet tissue continuing material body  6  after being separated. 
         [0075]    The wet tissue  7  forming the front end  6   a  of the wet tissue continuing material body  6  after the separation does not receive the force in the F direction which has been applied by the user in  FIG. 11B  and thus, tries to move in the G direction in  FIG. 11C . At this time, a resistance is applied to the front end  6   a  when passing through the extraction hole  26  and the like. The resistance at this time is applied in the opposite direction to the G direction in which the wet tissue  7  forming the front end  6   a  tries to move, and the magnitude of the resistance balances with the magnitude of the force applied when the wet tissue  7  tries to move in the G direction such that the front end  6   a  of the wet tissue  7  becomes a pop-up state in which the front end  6   a  is kept in a state of being positioned above the extraction hole forming portion  27 . Further, in a case where the front end  6   a  of the wet tissue continuing material body  6  is not entirely accommodated in the accommodation space  23  at this time, a portion of the front end  6   a  moves to the internal space of the bag body  3  through the relief portion  39 . 
         [0076]    After extracting the wet tissue  7 , the user closes the lid  5  to seal the bag body  3 . When the wet tissue  7  is to be extracted thereafter, the user may open the lid  5  again, insert a finger into the pinching hole  22 , pinch the front end  6   a  of the wet tissue continuing material body  6  which has already popped up and draw out the wet tissue continuing material body  6 . Then, the wet tissue  7  is separated at the separating portion  10  by the same operation as described above such that the sheet-like wet tissue  7  is drawn out. 
         [0077]    When the wet tissue  7  is extracted again, even in a case where the front end  6   a  of the wet tissue continuing material body  6  has not popped up, the wet tissue  7  may be drawn out in the same order described above. 
         [0078]    In the wet tissue packaging unit  1  according to this embodiment, as the wet tissues  7  are drawn out, the volume of the wet tissue continuing material body  6  decreases. However, in the wet tissue packaging unit  1  according to this embodiment, the lid  5  is formed in an openable and closable manner with respect to the extraction hole forming member  4 . Therefore, even when the volume of the wet tissue continuing material body  6  accommodated in the bag body  3  decreases, the lid  5  may be closed to seal the bag body  3 . Therefore, according to the wet tissue packaging unit  1  according to this embodiment, the bag body  3  is prevented from not being maintained in the sealed state and thus the chemical solution and the like impregnated into the wet tissue continuing material body  6  (the wet tissue  7 ) are prevented from volatilizing. Accordingly, it is possible to provide the wet tissue  7  in a state where the chemical solution and the like are always impregnated therein for the user. 
         [0079]    Further, according to the wet tissue packaging unit  1  according to this embodiment, in the case where the wet tissue packaging unit  1  is the unused item, the pinching hole  22  is closed by the partitioning portion  24 . To use the wet tissue packaging unit  1 , the fragile portion  25  provided in the peripheral edge portion of the partitioning portion  24  is broken to remove the partitioning portion  24  and open the pinching hole  22 , and thereafter the front end  6   a  of the wet tissue continuing material body  6  is pinched. Accordingly, it is possible to very easily determine whether or not the wet tissue packaging unit  1  is the unused item according to the presence or absence of the partitioning portion  24 . Therefore, when using the wet tissue packaging unit  1  or purchasing the wet tissue packaging unit  1 , it is possible for the user to use or purchase the wet tissue packaging unit  1  after determining whether or not the wet tissue packaging unit  1  is the unused item. 
         [0080]    Furthermore, according to the wet tissue packaging unit  1  according to this embodiment, since the extraction hole forming member  4  provided with the lid  5  is attached to the inner surface of the bag body  3 , during the manufacture, it is possible to manufacture the wet tissue packaging unit  1  without a process of attaching the lid  5  after attaching the extraction hole forming member  4  to the bag body  3 . Therefore, according to the wet tissue packaging unit  1  according to this embodiment, the number of processes may be reduced during the manufacture and hence it is possible to largely reduce the manufacturing cost. Furthermore, the wet tissue packaging unit  1  according to this embodiment includes the relief portion which allows the accommodation space  23  and the internal space of the bag body  3  to communicate with each other. Accordingly, when the front end  6   a  of the wet tissue continuing material body  6  is to be accommodated in the accommodation space  23 , in a case where the front end  6   a  is not entirely accommodated only in the accommodation space  23 , a portion of the front end  6   a  may be relieved to the inside of the bag body  3  through the relief portion. Therefore, according to the wet tissue packaging unit  1  according to this embodiment, the bag body  3  may be always sealed by closing the lid  5  regardless of the pop-up amount of the front end  6   a  of the wet tissue continuing material body  6 , and hence it is possible to prevent the chemical solution and the like impregnated into the wet tissue continuing material body  6  (the wet tissue  7 ) from volatilizing. 
         [0081]    Next, a second embodiment of the wet tissue packaging unit according to the present invention will be described with reference to  FIGS. 12A and 12B . Further, the description of the same components as those of the first embodiment will not be repeated and the same reference numerals are used in the description of the second embodiment. 
         [0082]    The wet tissue packaging unit according to this embodiment is different from that of the first embodiment described above in the structure of the extraction hole forming member, and hence the structure of the extraction hole forming member will now be described. 
         [0083]    An extraction hole forming member  51  according to this embodiment is attached at a position where the positions of an extraction hole  54  and the opening  2  of the bag body  3  coincide with each other on the inner side of the bag body  3 . As a method of attaching the extraction hole forming member  51  to the bag body  3 , for example, a method using hot-melt or the like may be exemplified, but the present invention is not limited thereto. That is, various methods may be arbitrarily selected. 
         [0084]    For example, the extraction hole forming member  51  may be formed of a thermoplastic resin material such as polyethylene and polypropylene. In this embodiment, the description is provided by using the extraction hole forming member  51  which is integrally molded by an injection molding method or the like, but the extraction hole forming member  51  may also be formed by the combination of the separately molded members. Further, the extraction hole forming member  51  may be formed by a method other than the above-described method. 
         [0085]    As illustrated in  FIG. 12A , the extraction hole forming member  51  includes a base plate  52  as a base portion for attaching the extraction hole forming member  51  to the bag body  3 , an accommodation space  53  which can accommodate the front end of the wet tissue continuing material body, and an extraction hole  54  through which the wet tissue continuing material body is separated at the separating portion of the wet tissue continuing material body. Further, the extraction hole forming member  51  illustrated in this example includes a closing portion  55  which is provided to close the extraction hole  54  and a fragile portion  56  which is formed at the peripheral edge portion of the closing portion  55  and is broken when a predetermined shear force is applied thereto. 
         [0086]    The base plate  52  is formed in a flat square plate shape, and is formed so that the upper surface thereof becomes an attachment surface when the base plate  52  is attached to the inner surface of the bag body. The reference numeral  57  of  FIG. 12A  indicates the attachment surface. In the state where the extraction hole forming member  51  is attached to the bag body, the attachment surface  57  provided in the base plate  52  faces the inner surface of the bag body. Further, the upper surface of the base plate  52  is integrally molded with the lid  5  through the hinge portion  5   a . The base plate  52  is provided with an extraction concave portion  58  at the substantially center portion thereof. The extraction concave portion  58  is formed in a concave shape so that the position thereof in the height direction is lower than the position of the base plate  52  at one step lower. Further, the extraction concave portion  58  is formed in a circular shape in the top view of the extraction hole forming member  51 . 
         [0087]    A vertical wall portion  59  is uprightly formed in the extraction concave portion  58 . The vertical wall portion  59  is formed in a circular shape in the top view of the extraction hole forming member  51 . Further, the vertical wall portion  59  is formed so that the outer diameter of the vertical wall portion  59  is smaller than the inner diameter of the extraction concave portion  58 . Furthermore, the vertical wall portion  59  is formed at a position where the center position of an inner wall of the extraction concave portion  58  coincides with the center position of the vertical wall portion  59 . That is, the vertical wall portion  59  is formed so that a circle drawn by the inner wall of the extraction concave portion  58  is concentric with a circle drawn by the vertical wall portion  59 . Further, the vertical wall portion  59  is formed so that the position of the upper surface thereof in the height direction is lower than the position of the upper surface of the base plate  52  in the height direction and when the lid  5  is closed, the upper surface of the lid  5  and the upper surface of the base plate  52  substantially are flush with each other. 
         [0088]    The accommodation space  53  is a space formed to accommodate the front end  6   a  of the wet tissue continuing material body  6 . The accommodation space  53  is sealed when the lid  5  is closed. The accommodation space  53  is surrounded by the lid  5 , the closing portion  55 , and the vertical wall portion  59  when the wet tissue packaging unit  1  is the unused item and the lid  5  is closed. Further, when the lid  5  is closed in a case of a used item in which the closing portion  55  is formerly removed, the accommodation space  53  is formed to be surrounded by the lid  5  and the vertical wall portion  59  and to communicate with the internal space of the bag body  3  through the extraction hole  54 . 
         [0089]    The extraction hole  54  is formed such that the wet tissue  7  separates at the separating portion  10  provided in the wet tissue continuing material body  6  and the following front end  6   a  of the wet tissue continuing material body  6  is allowed to pop up. As illustrated in  FIG. 12B , the extraction hole  54  is opened to the base plate  52 . The extraction hole  54  is formed so that the user pinches the front end  6   a  of the wet tissue continuing material body  6  to draw out the front end  6   a  and the front end  6   a  of the wet tissue continuing material body  6  is maintained in the pop-up state. 
         [0090]    As illustrated in  FIG. 12B , the extraction hole  54  is formed inside an area surrounded by the vertical wall portion  59  and is opened by breaking the fragile portion  56  and removing the closing portion  55 . The extraction hole  54  is formed to allow the accommodation space  53  to communicate with the internal space of the bag body  3  so that the front end  6   a  of the wet tissue continuing material body  6  accommodated in the bag body  3  is pinched, the pinched front end  6   a  is drawn to the outside of the bag body  3 , and furthermore the front end  6   a  is maintained in the pop-up state. As illustrated in  FIG. 12B , the extraction hole  54  includes a pinching hole  61  which is opened at substantially the center portion thereof, is formed to be wide in the forward-rearward direction, and has an elongated hole shape that widens in the right-left direction, a first extraction slit  62  which extends to the left while drawing an arc line from the pinching hole  61 , and a second extraction slit  63  which extends to the right while drawing an arc line from the pinching hole  61 . The first and second extraction slits  62  and  63  are opened to extend from the pinching hole  61  to the left while drawing a curve with respect to the pinching hole  61  and thereafter extend to the right while drawing a curve. In this embodiment, the shape of the extraction hole is the above-described shape, but is not limited thereto and may be formed in the other shapes. Further, the shape of the extraction hole may not be symmetrical in the right-left direction or may not be symmetrical in the forward-rearward direction. 
         [0091]    The closing portion  55  partitions the bag body  3  into the inside and the outside by closing the extraction hole  54 . The closing portion  55  is formed inside the vertical wall portion  59 . Further, a tab  60  is integrally formed with the upper portion of the closing portion  55 . The tab  60  is formed in an annular shape and is formed so that a part of the inner portion thereof is connected to the closing portion  55 . 
         [0092]    The fragile portion  56  is provided in the peripheral edge portion of the closing portion  55 . As illustrated in  FIG. 12A , the fragile portion  56  is formed at the peripheral edge portion of the closing portion  55  in a groove shape so that a thickness thereof is thinner than a thickness of the closing portion  55 . Further the fragile portion  56  is formed to be broken by a stress that occurs due to a predetermined shear force when the shear force is applied. Here, the “predetermined shear force” is a force having a conventionally well-known magnitude needed for the shear failure of the fragile portion  25  provided at the peripheral edge portion of the partitioning portion  24 . 
         [0093]    Next, the operation/working-effect of the wet tissue packaging unit according to this embodiment when the front end  6   a  of the wet tissue continuing material body  6  is extracted therefrom will be described. Further, in this embodiment, the procedure of removing the closing portion  55  and the procedure of extracting the wet tissue  7  by drawing out the front end  6   a  of the wet tissue continuing material body  6  after removing the closing portion  55  are the same as those of the first embodiment, and hence the description thereof will not be repeated. 
         [0094]    As illustrated in  FIG. 12B , in the extraction hole forming member according to this embodiment, the extraction hole  54  includes the pinching hole  61  and the first and second extraction slits  62  and  63 . When pinching the front end  6   a  of the wet tissue continuing material body  6 , as needed basis, the user causes the lowest portion of the extraction hole forming member  51  to approach the upper surface of the wet tissue continuing material body  6  and pinches the front end  6   a  through the pinching hole  61  to be drawn out from the bag body  3 . In this case, since the wet tissue continuing material body  6  is located at a position where the user easily pinches the front end  6   a , the user may easily pinch the front end  6   a  of the wet tissue continuing material body  6  to draw out the front end  6   a . Further, since the wet tissue continuing material body  6  (the wet tissue  7 ) which is being drawn out is drawn out while widening in the right-left direction, the wet tissue continuing material body  6  is drawn out while passing through the first and second extraction slits  62  and  63  as well as the pinching hole  61 . 
         [0095]    Here, since the first and second extraction slits  62  and  63  are formed while drawing the curves as described above, a resistance is applied to the wet tissue continuing material body  6  in the forward-rearward and right-left directions when the wet tissue continuing material body  6  passes through the first and second extraction slits  62  and  63 . The resistance is applied in the opposite direction to the direction in which the user draws out the front end  6   a  of the wet tissue continuing material body  6 . Therefore, when the separating portion  10  of the wet tissue continuing material body  6  passes through the extraction hole  54 , the wet tissue continuing material body  6  is separated at the separating portion  10  and the sheet-like wet tissue  7  is extracted. 
         [0096]    At this time, in the wet tissue continuing material body  6 , the front end  6   a  pops up to the upper portion of the extraction hole  54  and thus tries to move downward. However, even in this case, a resistance is applied to the wet tissue continuing material body  6  by the pinching hole  61  and the first and second extraction slits  62  and  63 . The resistance in this case is applied in the opposite direction to the direction in which the front end  6   a  of the wet tissue continuing material body  6  tries to move downward, and the magnitude of the force balances with the force applied when the front end  6   a  tries to move. Therefore, the front end  6   a  of the wet tissue continuing material body  6  does not move downward due to the extraction hole  54  and is maintained in the state of popping up to the upper portion of the extraction hole  54 , that is, in the pop-up state. At this time, the front end  6   a  is accommodated in the accommodation space  53 . When the user closes the lid  5 , the accommodation space  53  is sealed and hence the wet state of the wet tissue continuing material body  6  accommodated in the accommodation space  53  and the bag body  3  is maintained. 
         [0097]    As described above, according to the wet tissue packaging unit according to this embodiment, since the extraction hole  54  is provided in the extraction hole forming member  51  and the pinching hole  61  and the first and second extraction slits  62  and  63  are provided in the extraction hole  51 , it is possible to easily extract the wet tissue  7  without complicating the shape of the extraction hole forming member  51 . Further, according to the wet tissue packaging unit according to this embodiment, since the lid  5  is provided in the extraction hole forming member  51 , even when the volume of the wet tissue continuing material body  6  decreases, the bag body  3  may be sealed only by closing the lid  5 . Therefore, it is possible to maintain the wet tissue continuing material body  6  accommodated in the bag body  3  in a wet state and thus it is possible to provide the wet tissue  7  in a state where the chemical solution and the like are always impregnated therein for the user. 
         [0098]    Furthermore, according to the wet tissue packaging unit according to this embodiment, in the case where the wet tissue packaging unit is the unused item, the extraction hole  54  is closed by the closing portion  55 . To use the wet tissue packaging unit, the fragile portion  56  provided in the peripheral edge portion of the closing portion  55  is broken to remove the closing portion  55  and to open the extraction hole  54 , and thereafter the front end  6   a  of the wet tissue continuing material body  6  is pinched. Accordingly, it is possible to very easily determine whether or not the wet tissue packaging unit is the unused item according to the presence or absence of the extraction hole  54 . Therefore, it is possible for the user to use the wet tissue packaging unit and to purchase the wet tissue packaging unit after determining whether or not the wet tissue packaging unit is the unused item. 
         [0099]    Furthermore, according to the wet tissue packaging unit according to this embodiment, since the extraction hole forming member  51  provided with the lid  5  is attached to the inner surface of the bag body  3 , during the manufacture, it is possible to manufacture the wet tissue packaging unit without a process of attaching the lid  5  after attaching the extraction hole forming member  51  to the bag body  3 . Therefore, according to the wet tissue packaging unit according to this embodiment, the number of processes may be reduced during the manufacture and hence it is possible to largely reduce the manufacturing cost. 
         [0100]    Next, a wet tissue packaging unit according to a third embodiment of the present invention will be described with reference to  FIGS. 13A to 15C . Further, the description of the same components as those of the first or second embodiment will not be repeated and the same reference numerals are used in the description of the third embodiment. 
         [0101]    The wet tissue packaging unit according to this embodiment is different from those of the first and second embodiments described above in the structure of an extraction hole forming member  71 , and hence the structure of the extraction hole forming member  71  will now be described. 
         [0102]    The extraction hole forming member  71  according to this embodiment is attached at a position where the positions of an extraction hole  77  to be described later and the opening  2  of the bag body  3  coincide with each other on the inner side of the bag body  3 . As a method of attaching the extraction hole forming member  71  to the bag body  3 , for example, a method using hot-melt or the like may be exemplified, but the present invention is not limited thereto. That is, various methods may be arbitrarily selected. 
         [0103]    As illustrated in  FIG. 13A , the extraction hole forming member  71  includes a base plate  72  as a base portion for attaching the extraction hole forming member  71  to the bag body  3 , an accommodation space  74  which accommodates the front end  6   a  of the wet tissue continuing material body  6  through a pinching hole  73  for extracting the wet tissue  7  to the outside of the bag body  3 , and an extraction hole forming portion  78  having an extraction hole  77  which is opened to separate the wet tissue  7  at the separating portion  10  of the wet tissue continuing material body  6 . Further, the extraction hole forming member  71  illustrated in this example includes a partitioning portion which is provided to close the pinching hole  73  and partitions the accommodation space  74  into a plurality of sections, and a fragile portion which is formed at the peripheral edge portion of the partitioning portion and is broken when a predetermined shear force is applied thereto. In addition, the configurations of the base plate  72 , the pinching hole  73 , the accommodation space  74 , the partitioning portion, and the fragile portion in this embodiment are the same as those of the first embodiment described above, and hence the detailed description thereof will not be repeated. 
         [0104]    As illustrated in  FIGS. 13A to 14B , in the wet tissue packaging unit according to this embodiment, the extraction hole forming portion  78  is supported by the base plate  72  as the base portion in a cantilevered manner. The extraction hole forming portion  78  separates the wet tissue  7  at the separating portion  10  provided in the wet tissue continuing material body  6  and allows the front end  6   a  of the wet tissue continuing material body  6  to pop up. The extraction hole forming portion  78  has a leg portion  79  at the front end, and the leg portion  79  is integrally formed with the base plate  72  on the lower side of the base plate  72  and is hence integrally formed with the base plate  72 . That is, the extraction hole forming portion  78  is supported by the base plate  72  in a cantilevered manner through the leg portion  79 . The extraction hole forming portion  78  is disposed on the lower side of the base plate  72  so that the extraction hole  77  is located below a point where the extraction concave portion of the base plate  72  is formed. Furthermore, the extraction hole forming portion  78  is formed in a curved shape. 
         [0105]    As illustrated in  FIG. 14B , in the extraction hole forming portion  78 , the extraction hole  77  is opened to the substantially center portion of the extraction hole forming portion  78  in the forward-rearward direction. The extraction hole  77  is formed in an elongated hole shape that extends in the right-left direction. The extraction hole  77  is formed in a size in which, when the front end  6   a  of the wet tissue continuing material body  6  or the like passes therethrough, a resistance is applied to the front end  6   a  of the wet tissue continuing material body  6  that passes therethrough. Further, in the extraction hole forming portion  78 , a first slit  80  and a second slit  81  are respectively provided in both ends of the extraction hole  77  in the forward-rearward direction with respect to the extraction hole  77 . The first and second slits  80  and  81  are formed in elongated hole shapes that extend in the right-left direction, and the widths thereof in the forward-rearward direction are smaller than that of the extraction hole  77  in the forward-rearward direction. Furthermore, the first and second slits  80  and  81  are formed so that the widths of the first and second slits  80  and  81  are the same. The first and second slits  80  and  81  are formed so that, when the front end  6   a  of the wet tissue continuing material body  6  passes therethrough, a resistance is applied to the front end  6   a  of the wet tissue continuing material body  6  that passes therethrough. 
         [0106]    Furthermore, in the extraction hole forming portion  78 , a first protruding piece  82  is provided between the extraction hole  77  and the first slit  80 , and a second protruding piece  83  is provided between the first slit  80  and the second slit  81 . The first protruding piece  82  includes a left protruding piece  82   a  that extends from the left to the right and a right protruding piece  82   b  that extends from the right to the left, and a first void  84  is provided between the left protruding piece  82   a  and the right protruding piece  82   b . Further, the second protruding piece  83  includes a left protruding piece  83   a  that extends from the left to the right and a right protruding piece  83   b  that extends from the right to the left, and a second void  85  is provided between the left protruding piece  83   a  and the right protruding piece  83   b . The first and second voids  84  and  85  are formed to be located on the substantially straight line in the right-left direction. 
         [0107]    As illustrated in  FIGS. 13A to 14B , the extraction hole forming member  71  is provided with a relief portion  86 . The relief portion  86  allows a portion of the front end  6   a  which is not accommodated in the accommodation space  74  to be relieved into the bag body  3  when the front end  6   a  of the wet tissue continuing material body  6  is pushed into the accommodation space  74 . The relief portion  86  is formed to be surrounded by the base plate  72 , the extraction hole forming portion  78 , and the leg portion  79  to allow the accommodation space  74  and the internal space of the bag body  3  to communicate with each other. In addition, in this embodiment, the relief portion  86  is formed on the left, right, and rear sides of the extraction hole forming portion  78  where the leg portion  79  is not formed, but the position where the relief portion  86  is formed may be a position other than the above-described position. Furthermore, the size of the relief portion  86  may be arbitrarily selected as long as the front end  6   a  of the wet tissue continuing material body  6  may move between the accommodation space  74  and the internal space of the bag body  3 . The number of relief portions may also be arbitrarily selected as long as the extraction hole forming portion  78  is supported by the base plate  72  in a cantilevered manner. 
         [0108]    Next, the operation of the wet tissue packaging unit according to this embodiment will be described. As illustrated in  FIG. 15A , the extraction hole forming member  71  according to this embodiment is formed so that the leg portion  79  provided on the front side of the extraction hole forming portion  78  is formed integrally with the lower side of the base plate  72  and the rear side of the extraction hole forming portion  78  becomes a free end. Here, in a case that the user pinches and raises the front end  6   a  of the wet tissue continuing material body  6  in the H direction illustrated in  FIG. 15B , the extraction hole forming portion  78  is elastically deformed in the I direction about or on the leg portion  79  as the fulcrum at a side of the free end thereof by a force, which is applied in the H direction to the extraction hole  77  and the like when the wet tissue continuing material body  6  is raised. 
         [0109]    At this time, the relief portion  86  is narrowed. Subsequently, after extracting the wet tissue  7 , when the user pushes down the front end in the J direction illustrated in  FIG. 13C  in order to cause the front end  6   a  of the wet tissue continuing material body  6  to be accommodated in the accommodation space  74 , the free end is elastically deformed in the K direction about the leg portion  79  as the fulcrum by a force, which is applied to the extraction hole  77  and the like when the front end  6   a  is moved in the J direction. Hence the free end is turned toward the internal space of the bag body  2 . Accordingly, the relief portion  86  is widened. 
         [0110]    As described above, according to the wet tissue packaging unit according to this embodiment, in addition to the effects of the wet tissue packaging unit  1  according to the first embodiment described above, since the extraction hole forming portion  78  is elastically deformed about or on the leg portion  79  as the fulcrum, ease of extraction when the front end  6   a  of the wet tissue continuing material body  6  is extracted is largely improved. 
         [0111]    Further the extraction hole forming portion  78  is elastically deformed about or on the leg portion  79  as the fulcrum and is turned when the front end  6   a  of the wet tissue continuing material body  6  is accommodated in the accommodation space  74 , thereby widening the accommodation space  74 . Therefore, according to the wet tissue packaging unit according to this embodiment, it is possible to largely improve ease of extraction of the wet tissue and ease of accommodation. At this time, it is possible to widen the relief portion  86  as well as the accommodation space  74 . Therefore, according to the wet tissue packaging unit according to this embodiment, it is possible to further improve ease of accommodation of the wet tissue. 
         [0112]    Next, a fourth embodiment of the wet tissue packaging unit according to the present invention will be described with reference to  FIGS. 16A to 17C . Further, the description of the same components as those of the first to third embodiments will not be repeated and the same reference numerals are used in the description of the fourth embodiment. 
         [0113]    The wet tissue packaging unit according to this embodiment is different from those of the first to third embodiments described above in the structure of an extraction hole forming member  91 , and hence the structure of the extraction hole forming member  91  will now be described. 
         [0114]    The extraction hole forming member  91  according to this embodiment is disposed or attached at a position where the positions of an extraction hole  111  and the opening  2  of the bag body  3  coincide with each other on the inner side of the bag body  3 . As a method of attaching the extraction hole forming member  91  to the bag body  3 , for example, a method using hot-melt or the like may be exemplified, but the present invention is not limited thereto. That is, various methods may be arbitrarily selected. 
         [0115]    As illustrated in  FIG. 16A , the extraction hole forming member  91  includes a base plate  92  as a base portion for attaching the extraction hole forming member  91  to the bag body  3 , an accommodation space  94  which accommodates the front end  6   a  of the wet tissue continuing material body  6  through a pinching hole  93  for extracting the wet tissue  7  to the outside of the bag body  3 , and an extraction hole forming portion  96  having an extraction hole  111  which is opened to separate the wet tissue  7  at the separating portion  10  of the wet tissue continuing material body  6 . Further, the extraction hole forming member  91  illustrated in this example includes a partitioning portion which is provided to close the pinching hole  93  and partitions the accommodation space  94  into a plurality of sections, and a fragile portion which is formed at the peripheral edge portion of the partitioning portion and is broken when a predetermined shear force is applied thereto. In addition, the configurations of the base plate  92 , the pinching hole  93 , the accommodation space  94 , the partitioning portion, and the fragile portion in this embodiment are the same as those of the first embodiment described above, and hence the detailed description thereof will not be repeated. 
         [0116]    As illustrated in  FIG. 16B , in the wet tissue packaging unit according to this embodiment, the extraction hole forming portion is divided into a plurality of portions (in the case of this embodiment, the extraction hole forming portion  96  is formed by a first extraction hole forming portion  97  and a second extraction hole forming portion  98 ) and is supported by a base plate as the base portion in a cantilevered manner so that the respective free ends of the extraction hole forming portions oppose each other. In this embodiment, a state where the extraction hole forming portion  96  is formed by the two portions including the first extraction hole forming portion  97  and the second extraction hole forming portion  98  is used for the description, but the extraction hole forming portion  96  may include two or more portions. 
         [0117]    The extraction hole forming portion  96  separates the wet tissue  7  at the separating portion  10  provided in the wet tissue continuing material body  6  and allows the front end  6   a  of the wet tissue continuing material body  6  to pop up. The first extraction hole forming portion  97  has a leg portion  101   a  at the front end, and the leg portion  101   a  is integrally formed with the base plate  92  on the lower side of the base plate  92  and is hence integrally formed with the base plate  92 . That is, the first extraction hole forming portion  97  is supported by the base plate  92  in a cantilevered manner through the leg portion  101   a . The second extraction hole forming portion  98  has a leg portion  101   b  at the rear end, and the leg portion  101   b  is integrally formed with the base plate  92  on the lower side of the base plate  92  and is hence integrally formed with the base plate  92 . That is, the second extraction hole forming portion  98  is supported by the base plate  92  in a cantilevered manner through the leg portion  101   b.    
         [0118]    As illustrated in  FIG. 16B , the first extraction hole forming portion  97  is provided with a first extraction hole forming portion concave portion  102  at the rear of the extraction hole forming portion  96 . On the front side of the first extraction hole forming portion concave portion  102 , a first slit  103  and a second slit  104  are formed. The first and second slits  103  and  104  are formed in elongated hole shapes that extend in the right-left direction, and the widths thereof in the forward-rearward direction are substantially the same as the width of the first extraction hole forming portion concave portion  102 . Furthermore, the first and second slits  103  and  104  are formed so that the widths of the first and second slits  103  and  104  are the same. The first and second slits  103  and  104  are also formed so that, when the front end  6   a  of the wet tissue continuing material body  6  passes therethrough, a resistance is applied to the front end  6   a  of the wet tissue continuing material body  6  that passes therethrough. 
         [0119]    Furthermore, in the first extraction hole forming portion  97 , a first protruding piece  105  is provided between the first extraction hole forming portion concave portion  102  and the first slit  103 , and a second protruding piece  106  is provided between the first slit  103  and the second slit  104 . The first protruding piece  105  includes a left protruding piece  105   a  that extends from the left to the right and a right protruding piece  105   b  that extends from the right to the left, and a first void  107  is provided between the left protruding piece  105   a  and the right protruding piece  105   b . Further, the second protruding piece  106  includes a left protruding piece  106   a  that extends from the left to the right and a right protruding piece  106   b  that extends from the right to the left, and a second void  108  is provided between the left protruding piece  106   a  and the right protruding piece  106   b . The first and second voids  107  and  108  are formed to be located on the substantially straight line in the right-left direction. 
         [0120]    The second extraction hole forming member  91  is provided with a second extraction hole forming concave portion  109  on the front side of the extraction hole forming portion  96 . In addition, the first and second slits  103  and  104  are formed on the rear side of the first extraction hole forming portion concave portion  102 . The configurations of the first and second slits  103  and  104 , the first and second protruding pieces  105  and  106 , and the first and second voids  107  and  108  are the same as those of the first extraction hole forming portion  97 , and hence the description thereof will not be repeated. 
         [0121]    The first and second extraction hole forming portions  97  and  98  are formed at the lower surface of the base plate  92  so that the free ends thereof on the opposite sides to the leg portions  101   a  and  101   b  oppose each other. That is, a free end  101   c  of the first extraction hole forming portion  97  is formed to be positioned on the rear side in relation to the leg portion  101   a , and a free end  101   d  of the second extraction hole forming portion  98  is formed to be positioned on the front side in relation to the leg portion  101   b . A third void  110  is provided between the free end  101   c  of the first extraction hole forming portion  97  and the free end  101   d  of the second extraction hole forming portion  98  so that the free end  101   c  of the first extraction hole forming portion  97  and the free end  101   d  of the second extraction hole forming portion  98  do not come into contact with each other when the first and second extraction hole forming portions  97  and  98  are elastically deformed. Further, the first and second extraction hole forming portions  97  and  98  are disposed so that the first and second extraction hole forming portion concave portions  102  and  109  oppose each other. As described above, the space formed by the first and second extraction hole forming portion concave portions  102  and  109  becomes the extraction hole  111 . That is, it can be said that the extraction hole  111  in this embodiment is a hole having an elongated hole shape that extends in the right-left direction, and the third void  110  is formed on each of both ends in the right-left direction. In this embodiment, the third void  110  is provided at substantially the center portion of the extraction hole forming member  91  in the forward-rearward direction, but the position where the third void  110  is provided is not limited thereto. 
         [0122]    As illustrated in  FIGS. 16A to 17C , a relief portion  112  is provided in the extraction hole forming member  91 . The relief portion  112  allows a portion of the front end  6   a  of the wet tissue continuing material body  6  which is not accommodated in the accommodation space  94  to be relieved into the bag body  3  when the front end  6   a  is pushed into the accommodation space  94 . The relief portion  112  is formed to be surrounded by the base plate  92 , the leg portion  101   a , the first and second extraction hole forming portions  97  and  98 , and the leg portion  101   b  to allow the accommodation space  94  and the internal space of the bag body  3  to communicate with each other. In addition, in this embodiment, the relief portion  112  is formed on the left and right sides of the first and second extraction hole forming portions  97  and  98  where the leg portions  101   a  and  101   b  are not formed, but the position where the relief portion  112  is formed may be a position other than the above-described position. Furthermore, the size of the relief portion  112  may be arbitrarily selected as long as the front end  6   a  of the wet tissue continuing material body  6  may move between the accommodation space  94  and the internal space of the bag body  3 . The number of relief portions  112  may also be arbitrarily selected as long as the extraction hole forming portion  96  is supported by the base plate  92  in a cantilevered manner. 
         [0123]    Next, the operation of the wet tissue packaging unit according to this embodiment will be described. As illustrated in  FIG. 17A , the extraction hole forming portion  96  according to this embodiment is formed by the first and second extraction hole forming portions  97  and  98 . The first extraction hole forming portion  97  is formed so that the leg portion  101   a  provided on the front side of the first extraction hole forming portion  97  is formed integrally with the lower side of the base plate  92  and the rear side of the first extraction hole forming portion  97  becomes the free end  101   c . In addition, the second extraction hole forming portion  98  is formed so that the leg portion  101   b  provided on the rear side of the second extraction hole forming portion  98  is formed integrally with the lower side of the base plate  92  and the front side of the second extraction hole forming portion  98  becomes the free end  101   d . As described above, the third void  110  is provided between the free end  101   c  of the first extraction hole forming portion  97  and the free end  101   d  of the second extraction hole forming portion  98 . Furthermore, the extraction hole  111  is formed by the first extraction hole forming portion concave portion  102  provided in the free end  101   c  of the first extraction hole forming portion  97  and the second extraction hole forming portion concave portion  109  provided in the free end  101   d  of the second extraction hole forming portion  98 . 
         [0124]    Here, in the case that the user pinches the front end  6   a  of the wet tissue continuing material body  6  and raises the front end  6   a  in the L direction illustrated in  FIG. 17B , the first extraction hole forming portion  97  is elastically deformed in the M direction about or on the leg portion  101   a  as the fulcrum at the side of free end  101   c  by a force, which is applied in the L direction to the first extraction hole forming portion concave portion  102  when the wet tissue continuing material body is raised. In addition, in the second extraction hole forming portion  98 , when the wet tissue is raised, the free end  101   d  is elastically deformed in the M direction about the leg portion  101   b  as the fulcrum by a force, which is applied in the L direction to the second extraction hole forming portion concave portion  109 . 
         [0125]    Furthermore, after extracting the wet tissue  7 , when the user pushed down the front end  6   a  in the N direction illustrated in  FIG. 17C  in order to cause the front end  6   a  of the wet tissue continuing material body  6  to be accommodated in the accommodation space  94 , the first extraction hole forming portion  97  is elastically deformed in the O direction about or on the leg portion  101   a  as the fulcrum at the side of the free end  101   c  by the force, which is applied to the first extraction hole forming portion concave portion  102  and the like when the front end is moved in the O direction. Similarly, in the second extraction hole forming portion  98 , when the front end  6   a  is moved in the O direction, the free end  101   d  is elastically deformed in the O direction about the leg portion  101   b  as the fulcrum by the force, which is applied to the second extraction hole forming portion concave portion  109  and the like. 
         [0126]    As described above, according to the wet tissue packaging unit according to this embodiment, in addition to the effects of the wet tissue packaging unit  1  according to the first embodiment described above, since the first extraction hole forming portion  97  is elastically deformed about the leg portion  101   a  as the fulcrum and the second extraction hole forming portion  98  is elastically deformed about the leg portion  101   b  as the fulcrum, ease of extraction when the front end  6   a  of the wet tissue continuing material body  6  is extracted is largely improved. 
         [0127]    In addition, when the front end  6   a  of the wet tissue continuing material body  6  is accommodated in the accommodation space  94 , the first extraction hole forming portion  97  is elastically deformed about the leg portion  101   a  as the fulcrum and the second extraction hole forming portion  98  is elastically deformed about the leg portion  101   b  as the fulcrum, thereby widening the accommodation space  94 . 
         [0128]    Therefore, according to the wet tissue packaging unit according to this embodiment, it is possible to largely improve ease of extraction of the wet tissue and ease of accommodation. Furthermore, according to the wet tissue packaging unit according to this embodiment, when the accommodation space  94  is widened, the relief portion  112  is also widened as well as the accommodation space  94 . Therefore, according to the wet tissue packaging unit according to this embodiment, it is possible to further improve ease of accommodation of the wet tissue. 
         [0129]    In addition, in the present specification, the example in which the lid  5  is integrally molded with the extraction hole forming member  4  through the hinge portion  5   a  is used for the description, but the lid  5  may also be molded separately from the extraction hole forming member  4 . In addition, in the case where the lid  5  and the extraction hole forming member  4  are molded integrally with each other, the lid  5  and the extraction hole forming member  4  may be formed through a portion other than the hinge portion  5   a , or may be formed without the hinge portion  5   a  or the portion other than the hinge portion  5   a  interposed therebetween. 
         [0130]    Further, in the present specification, the fragile portion is a groove that is thinner than the partitioning portion. However, when the predetermined shear force is applied to the fragile portion, the fragile portion may be broken due to stress concentration on the fragile portion, and a shape other than the shape of this embodiment may be arbitrarily selected. Further, as a method of forming the fragile portion, an existing method may be arbitrarily selected to be applied. For example, the fragile portion may be formed using ultrasonic waves, or the fragile portion may be formed through pressurization using a press. Otherwise, the fragile portion may be formed using a laser, or the fragile portion may be formed by a method other than the above-described methods. Furthermore, although the fragile portion is formed through the integral molding, this embodiment is not limited to the case of the integral molding. 
         [0131]    Further, in the first, third, and fourth embodiments according to the present invention, the first and second slits are provided and the first and second protruding pieces are provided in the extraction hole forming portion, and in the second embodiment, the first and second extraction slits are provided in the extraction hole forming portion. However, these are merely examples and may be appropriately changed without departing from the spirit of the present invention. Further, the sizes of the first and second slits, the first and second protruding pieces, and the extraction hole formed in the first, third, and fourth embodiments may be arbitrarily selected as long as the front end of the wet tissue continuing material body may be extracted and the front end may pop up. Furthermore, the sizes of the extraction hole, the first and second extraction slits formed in the second embodiment may be arbitrarily selected as long as the front end of the wet tissue continuing material body may be extracted and the front end may pop up. 
         [0132]    In the present specification, the example in which the extraction hole forming portion and the base plate are integrally formed with each other is used for the description. However, the present specification is not limited thereto, and the extraction hole forming portion and the base plate may be separately formed from each other. Further, in the present specification, the extraction hole forming member is formed to be curved, but the present specification is not limited thereto. 
         [0133]    The wet tissue packaging unit that has been described so far is merely an example of the wet tissue packaging unit according to the present invention, and may be appropriately changed without departing from the spirit of the present invention. 
       REFERENCE SIGNS LIST 
       [0000]    
       
         
           
               1  wet tissue packaging unit 
               2  opening 
               3  bag body (accommodation container) 
               4 ,  51 ,  71 ,  91  extraction hole forming member 
               5  lid 
               6  wet tissue continuing material body 
               7  wet tissue 
               10  separating portion (dividing portion) 
               23 ,  53 ,  74 ,  94  accommodation space 
               26 ,  54 ,  111  extraction hole 
               27 ,  78 ,  96  extraction hole forming portion 
               39  relief portion (communicating portion) 
               55  closing portion 
               97  first extraction hole forming portion 
               98  second extraction hole forming portion