Patent Publication Number: US-2022227563-A1

Title: Packaging container

Description:
TECHNICAL FIELD 
     The present invention relates to a packaging container. 
     BACKGROUND ART 
     In the field of medical devices and foodstuffs, packaging containers containing chemical agents such as oxygen absorbent and desiccant are used to store a product (stored item) that require sterility and dryness. In such a packaging container, for example, a containing space and a chemical agent containing space are separated by an inner lid or a diaphragm, and the stored item and the chemical agent are stored in the container (see, for example, Patent Document 1). 
     PRIOR ART DOCUMENTS 
     Patent Documents 
     
         
         Patent Document 1: Japanese Patent Application Laid-Open No. 8-230952 
       
    
     SUMMARY OF THE INVENTION 
     Problem to be Solved by the Invention 
     However, in conventional packaging containers, the storage conditions of the stored item may deteriorate because the chemical agent requires a certain period of time to have an effect on the stored item, for example, as in the case where the stored item after removing oxygen, is oxidized by contact with oxygen. 
     The present disclosure is intended to provide a packaging container capable of quickly having an effect of a chemical agent on a stored item. 
     Means for Solving the Problem 
     One embodiment of the present invention is intended to provide a packaging container that includes a first member; a second member configured to engage with the first member integrally, an inner lid disposed between the first member and the second member; a stored item containing part opening from an engaged portion of the first member that is engaged with the second member, and configured to contain a stored item; a chemical agent containing part opening from the engaged portion of the second member that is engaged with the first member, the chemical agent containing part being formed separately from the stored item containing part, and configured to contain a chemical agent; and a ventilation path in which the stored item containing part and the chemical agent containing part are in communication, the ventilation path being formed in an inner space defined by the first member and the second member. 
     Effect of the Invention 
     According to the present disclosure, a packaging container can be provided capable of quickly having an effect of a chemical agent on a stored item. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is an assembly perspective view of a packaging container according to an embodiment; 
         FIG. 2  is an assembly perspective view of the packaging container shown in  FIG. 1  as seen from below; 
         FIG. 3  is a plan view of the packaging container shown in  FIG. 1  as seen from above; 
         FIG. 4  is an exploded perspective view of the packaging container shown in  FIG. 1 ; 
         FIG. 5  is a perspective view of an inner lid engaging with a main body in a state of a lid being removed; 
         FIG. 6  is a cross-sectional view showing a ventilation path of ventilation along an A-A line in  FIG. 3 ; and 
         FIG. 7  is a superimposed diagram showing a main body in an open state and an inner lid, and showing a ventilation path. 
     
    
    
     EMBODIMENTS FOR IMPLEMENTING THE INVENTION 
     Hereinafter, embodiments will be described with reference to the accompanying drawings. In order to facilitate the understanding of the description, the same elements in each drawing are, as far as possible, designated by the same reference numerals, and the overlapping description is omitted. 
     In the following description, an x direction, a y direction, and a z direction are perpendicular to each other. The x direction and the y direction are typically horizontal directions, and the z direction is typically a vertical direction. The x direction is an extending direction of a long side of a packaging container  1 . The y direction is an extending direction of a short side of the packaging container  1 . For the sake of convenience, a z-positive side may be referred to as an upper side, and a z-negative side may be referred to as a lower side. 
       FIG. 1  is an assembly perspective view of a packaging container  1  according to an embodiment.  FIG. 2  is an assembly perspective view showing the packaging container  1  shown in  FIG. 1  as seen from below.  FIG. 3  is a plan view of the packaging container  1  shown in  FIG. 1  as seen from above.  FIG. 4  is an exploded perspective view of the packaging container  1  shown in  FIG. 1 .  FIG. 5  is a perspective view illustrating a state of an inner lid  5  engaging with a main body  2  in an open state.  FIG. 6  is a cross-sectional view along an A-A line in  FIG. 3 , and shows a ventilation path  6 .  FIG. 7  is a superimposed diagram showing a main body  2  in an open state and the inner lid  5 , and is a diagram showing a ventilation path  6 . 
     The packaging container  1  shown in  FIGS. 1 to 3  is a container that can contain a stored item  7  and a chemical agent  8  separately from each other so that the stored item  7  and the chemical agent  8  do not come into direct contact with each other, as shown in  FIG. 6 . 
     The stored item  7  includes, for example, an absorbing membrane for tissue regeneration for oral surgery. The absorbing membrane for tissue regeneration, for example, is positioned between an artificial bone and soft tissue such as gums when implanting the artificial bone in a jaw during oral surgery, and is used to prevent adhesion between the artificial bone and the soft tissue. The absorbing membrane for tissue tissue regeneration has properties that decompose by oxygen and water. Because the absorbing membrane decomposes and is absorbed in the body after a certain period of time after surgery, there is no need to perform surgery again to remove the absorbing membrane from the body. When the absorbing membrane for tissue regeneration is compressed or deformed by external forces, the above properties are liable to deteriorate. 
     The packaging container  1  is a container for holding the stored item  7  so as to prevent the stored item  7  from being subjected to external forces. As shown in  FIGS. 1 and 3 , the packaging container  1  has a configuration in which an upper portion protrudes in a substantially cross shape, thereby increasing the strength against external forces from the upper portion. Further, as shown in  FIG. 2 , by forming the bottom face as a raised bottom, the stored item  7  is configured not to directly receive external forces from below. 
     For example, the absorbing membrane for tissue regeneration as the stored item  7  is formed in three kinds of rectangular shapes: 15×25 mm, 25×25 mm, and 30×40 mm, and one of the principal faces may be an adhesive face. 
     Further, because the absorbing membrane for tissue regeneration as the stored item  7  has decomposing properties by contacting with oxygen and moisture as described above, it is necessary to remove oxygen and moisture from the surroundings of the stored item  7  when the stored item  7  is placed in the packaging container  1 . For this purpose, a chemical agent  8  having the deoxygenating and/or dehydrating properties and capable of absorbing ambient oxygen and/or water is contained within the packaging container  1 . 
     By housing the stored item  7  and the chemical agent  8  within the packaging container  1 , the chemical agent  8  adsorbs oxygen and/or moisture around the stored item  7  so that the quality of the stored item  7  can be maintained. In addition, the packaging container  1  is preferably sealed in an aluminum bag while the stored item  7  and the chemical agent  8  are contained in the packaging container  1 . Thus, it is possible to prevent oxygen and/or moisture from entering from the outside, for example, from the aluminum bag, and the quality of the stored item  7  can be reliably maintained. Here, when sealing the aluminum bag or the like, the inside of the aluminum bag or the like is preferably degassed to a vacuum, and then filled with an inert gas such as nitrogen. 
     As shown in  FIGS. 4 and 5 , the packaging container  1  includes the main body  2  and the inner lid  5 . As shown in  FIGS. 1 to 6 , the main body  2  has a body part  3  (a first member) and a lid part  4  (a second member). The material of the packaging container  1  is, for example, a PET (polyethylene terephthalate) resin, which is transparent in this case, but each of the figures is shown as a non-transparent object for ease of viewing the shape. 
     As shown in  FIGS. 4 and 5 , the body part  3  and the lid part  4  of the main body  2  are formed in an approximately rectangular shape in a planar view and are integrally formed by connecting one long side of the body part  3  with one long side of the lid part  4  via a boundary portion  21 . The body part  3  has a protruding part  22  protruding toward a side facing the lid part  4  and a lower first plane part  23  having a rectangular frame shape formed along an outer edge of the protruding part  22 . 
     The lid part  4  has a depression  24  formed by bending downward from a side facing the body part  3  and an upper first plane part  25  having a rectangular frame shape famed along an outer edge of the depression  24 . 
     By bending the boundary portion  21  along the long side of the body part  3  and the lid part  4 , the depression  24  is engaged with the protruding part  22  of the body part  3 , and the upper first plane part  25  and the lower first plane part  23  contact with each other. As a result, the packaging container  1  is assembled and a storage space is famed therein. 
     The protruding part  22  of the body part  3  has a lower second plane part  32  and a lower third plane part  33 . The lower second plane part  32  protrudes in a step-like manner along the inside of the lower first plane part  23  and is formed in a rectangular frame shape. The lower third plane part  33  is a rectangular plane disposed inside the lower second plane part  32  at a position between the lower first plane part  23  and the lower second plane part  32  in the z direction. The lower third plane part  33  forms a part of a stored item containing part  31 . 
     Further, grooves  34  forming part of the ventilation path  6  are disposed on both sides of the lower third plane part  33  in the x direction. The details of the ventilation path  6  will be described later. The grooves  34  are formed while being bent toward the negative z-direction from the face of the lower second plane part  32 , and the bottom faces of the grooves  34  are located on the z-positive side of the lower third plane part  33 . The groove  34  is approximately C-shaped, and both ends thereof are connected to the stored item containing part  31  at both ends of the rectangular short side of the lower third plane part  33 . Between the grooves  34  and the lower third plane part  33 , intermediate wall parts  37  are formed at the same height as that of the lower second plane part  32 . The intermediate wall parts  37  extend along the short sides of the rectangular shape of the lower third plane part  33 . 
     The long side portion of the lower third plane part  33  is defined by an inner peripheral surface  38  between the lower second plane part  32  and the lower third plane part  33 , and the short side portion is defined by the intermediate wall part  37  to form the lower portion of the stored item containing part  31 . A convex pattern  39  constituted of a plurality of hemispherical projections is formed on the surface of the lower third plane part  33 . 
     The depression  24  of the lid part  4  has an upper second plane part  42  and an upper third plane part  43 . The upper second plane part  42  is famed in a step-like manner as a depression along the inside of the upper first plane part  25 . The upper third plane part  43  is formed in a step-like manner as a depression relative to the upper second plane part  42 . The upper third plane part  43  is an approximate cross-shaped plane extending in the x and y directions in a plane view. The upper third plane part  43  forms a part of a chemical agent containing part  41 . 
     As shown in  FIGS. 2, 4, and 5 , an outer peripheral surface  35  between the lower first plane part  23  and the lower second plane part  32  of the body part  3  includes body-side locking parts  36  to engage with the lid part  4 . Further, as shown in  FIGS. 1, 3, 4, and 5 , an inner peripheral surface  44  between the upper first plane part  25  and the upper second plane part  42  of the lid part  4  includes lid-side locking parts  45  to engage with the body part  3 . In the present embodiment, a pair of the body-side locking parts  36  is provided on a pair of short sides of a rectangular shape in a plan view of the outer peripheral surface  35 . A pair of the lid-side locking parts  45  is provided at positions facing each other when the body part  3  and the lid part  4  engage with each other, of the pair of short sides of the rectangular shape in a plan view of the inner peripheral surface  44 . Both the body-side locking part  36  and the lid-side locking part  45  are linear projections formed along the extending direction of the short sides. 
     The distance between the lid-side locking part  45  and the upper first plane part  25  is less than the distance between the body-side locking part  36  and the lower first plane part  23 . This configuration allows the lid-side locking part  45  to advance beyond the body-side locking part  36  and to be positioned between the body-side locking part  36  and the lower first plane part  23  during assembly. Thus, the movement of the lid part  4  of the lid-side locking part  45  toward the open side (the z-positive side of  FIG. 4  and  FIG. 5  and the lower second plane part  32  side) is regulated by the body-side locking part  36 . As a result, the body part  3  and the lid part  4  are engaged with each other. 
     Further, as shown in  FIGS. 2, 4, and 5 , a stop  46  for engagement is provided at a center of one of the pair of long sides of the upper first plane part  25  of the lid part  4  on the side without the boundary portion  21  between the body part  3  and the lid part  4 . The stop  46  is provided, for example, with a substantially semi-circular cut in a portion of the upper first plane part  25 . This cut is formed so that an arc projects toward the center of the container  1 , and the outer edge of the lower first plane part  23  of the body part  3  is inserted into the cut, as shown in  FIGS. 1 and 2 , and the body part  3  and the lid part  4  are firmly secured. 
     As shown in  FIGS. 4 to 6 , when the packaging container  1  is assembled, the inner lid  5  is disposed so that a first principal face  51  faces the lower second plane part  32  of the body part  3  and that a second principal face  52  faces the upper second plane part  42  of the lid part  4 . A frame projection  53  is erected at a position facing the lower third plane part  33  of the first principal face  51 . The frame projection  53  is formed in an approximately rectangular shape along the outline of the lower third plane part  33 . The long side portion of the frame projection  53  contacts the inner peripheral surface  38  of the lower second plane part  32 , thereby regulating a movement of the inner lid  5  in the y-direction, and the short side portion of the frame projection  53  contacts the intermediate wall part  37 , thereby regulating a movement of the inner lid  5  in the x-direction. 
     A convex pattern  56  of a plurality of hemispherical protrusions is famed inside the frame projection  53  of the first principal face  51 . When the packaging container  1  is assembled, the frame projection  53  of the inner lid  5  is engaged with the inner peripheral surface  38  of the lower second plane part  32  and the inside of the pair of intermediate wall parts  37 . At this time, the stored item containing part  31  is formed by the lower third plane part  33 , the first principal face  51  of the inner lid  5 , the pair of intermediate wall parts  37 , and the inner peripheral surface  38  of the lower second plane part  32 . 
     An ear part  54  is provided on both sides of the frame projection  53  of the inner lid  5  in the x-direction, and a recess  55  curved toward the frame projection  53  is provided at the center of the ear part  54  in the y-direction. 
     As shown in  FIGS. 1 and 3 to 5 , a pair of locking parts  48  to engage with the inner lid  5  is provided at the center of the pair of rectangular long sides of the inner peripheral surface  44  of the lid part  4 . The locking parts  48  are linear protrusions formed along the extending direction of the long sides. 
     As shown in  FIGS. 4 and 5 , when the container is assembled, the inner lid  5  is inserted into the depression  24  of the lid part  4 , and both ends of the long side of the inner lid  5  are moved beyond the locking part  48 , and are disposed between the locking part  48  and the upper second plane part  42 . As a result, the movement of the longitudinal ends of the inner lid  5  to the spaced-apart side (the z-positive side of  FIG. 4  and  FIG. 5  and the upper first plane part  25  side) is regulated by the locking part  48 . As a result, the inner lid  5  is engaged with the depression  24  of the lid part  4 . At this time, a chemical agent containing part  41  is famed by an inner peripheral surface  47 , the upper third plane part  43  of the lid part  4 , the second principal face  52  of the inner lid  5 , and the inner peripheral surface  47  between the upper second plane part  42  and the upper third plane part  43 . 
     Further, as shown in  FIGS. 2, 4, and 5 , a pair of containing grooves  40  is provided at the center of a pair of long sides of a rectangular shape in a plan view, of the outer peripheral surface  35  between the lower first plane part  23  and the lower plane portion  32  of the body part  3 . The containing groove  40  is formed so that the outer peripheral surface  35  curves inward along the z-negative direction from the lower second plane part  32 . The containing groove  40  is provided in a position facing the locking part  48  of the lid part  4 . Accordingly, when the body part  3  engages with the lid part  4 , because the locking part  48  enters the containing groove  40 , the locking part  48  smoothly engages with the body part  3  without causing the lid part  4  to interfere with the engagement. 
     As shown in  FIG. 6 , the protrusion amount from the first principal face  51  of the frame projection  53  of the inner lid  5  is formed so that a communication portion between a groove  34  of the body part  3  and the stored item containing part  31  is not blocked when the container is assembled, and that a gap is formed between the groove  34  and the frame projection  53 . This ensures communication between the groove  34  and the stored item containing part  31 . 
     In addition, as shown in  FIG. 7 , even when the inner lid  5  engages with the lid part  4  by the recesses  55  at both ends of the inner lid  5  in the x-direction, the inner lid  5  does not completely block the chemical agent containing part  41  and forms an opening  26  (shaded portion in  FIG. 7 ) at parts of both ends in the x-direction. Similarly, even when the inner lid  5  engages with the body part  3 , the inner lid  5  does not completely block the pair of grooves  34  on both sides of the stored item containing part  31  in the x-direction, and forms an opening  27  (shaded portion of  FIG. 7 ) at the center of the groove  34  in the y-direction. The openings  26  and the openings  27  are at least partially superimposed while facing each other during container assembly. That is, as shown in  FIGS. 6 and 7 , the ventilation paths  6  for communicating the stored item containing part  31  to the chemical agent containing part  41  are formed inside the main body  2  by the grooves  34  of the body part  3  and the recesses  55  of the inner lid  5 . 
     Next, the effect of the packaging container  1  according to the present embodiment will be described. The packaging container  1  according to the present embodiment includes the body part  3 , the lid part  4  integrally engaged with the body part  3 , the inner lid  5  disposed between the body part  3  and the lid part  4 , the stored item containing part  31  opening from an engaged portion of the body part  3  that is engaged with the lid part  4  and that houses a sheet-shaped stored item  7 , the chemical agent containing part  41  opening from the engaged portion of the lid part  4  that is engaged with the body part  3 , which is formed separately from the stored item containing part  31 , and contains a deoxidizing and/or dehydrating chemical agent  8 , and ventilation paths  6  that are famed in an inner space defined by the body part  3  and the lid part  4  and in which communicate the stored item containing part  31  and the chemical agent containing part  41  are in communication. 
     With this configuration, because the stored item  7  and the chemical agent  8  can be housed into the container while being separated from each other, and because communication between the stored item containing part  31  and the chemical agent containing part  41  can be ensured through the ventilation path  6 , the absorption of oxygen and/or water within the stored item containing part  31  by the chemical agent  8  can be promoted, and the effect of the chemical agent  8  can be quickly applied to the stored item  7 . Further, because the stored item  7  does not contact the chemical agent  8 , the deterioration or functional deterioration of the stored item  7  due to contact with the chemical agent  8  can be prevented, and the quality of the stored item  7  can be reliably maintained. 
     Further, in the packaging container  1  according to the present embodiment, because the ventilation paths  6  are formed on both sides of the stored item containing part  31  in the x-direction, the thickness of the container in the z-direction can be prevented, and space can be saved. 
     The packaging container  1  according to the present embodiment includes grooves  34  including ends in a circumferential direction on both sides of a single face of an inner wall of the stored item containing part  31  and formed into approximately C shapes connecting both ends, and disposed at a position where at least part of the grooves  34  face the chemical agent containing part  41  when the body part  3  and the lid part  4  engage with each other, ear parts  54  formed extending laterally from the inner lid  5  and disposed facing the grooves  34  when the body part  3  and the lid part  4  are engaged with each other, and recesses  55  formed so as to curve inward from the ends of the ear parts  54  to the center side of the inner lid  5  and disposed between parts of the grooves  34  and the chemical agent containing part  41  when the body part  3  and the lid part  4  are engaged with each other, and the grooves  34  and recesses  55  form ventilation paths  6 . 
     In this configuration, because the ventilation path  6  is formed by combining parts of the body part  3  and the inner lid  5  without a dedicated ventilation path  6 , the ventilation path  6  can be secured while ensuring the ease of assembly of the container. Further, the grooves  34  are formed in a substantially C shape, and particularly in the present embodiment, both ends of the groove  34  are connected to the stored item containing part  31  at both ends of the short side of rectangular sides of the lower third plane part  33 , and the intermediate wall part  37  is disposed at the center of the short side. Therefore, the opening portion of the ventilation path  6  to the stored item containing part  31  can be limited to both ends of the inner wall of the stored item containing part  31  (both ends of the intermediate wall part  37  in the y-direction). As a result, because the rectangular corner of the sheet-shaped stored item  7  in the stored item containing part  31  is unlikely to enter the ventilation path  6 , it is possible to prevent deformation caused by the entrance of the stored item  7  into the ventilation path  6  and prevent deformation and functional deterioration due to defamation of the stored item  7 . 
     In the packaging container  1  of the present embodiment, the inner lid  5  includes the frame projection  53  that engages with the outer edge of the stored item containing part  31 , on the first principal face  51  facing the body part  3  when disposed between the body part  3  and the lid part  4 . This configuration can prevent the stored item  7  from sticking out from the stored item containing part  31  to the inner lid  5  side. Further, it is possible to inhibit the movement of the inner lid  5  in the x direction and the y direction relative to the body part  3 , and thus it is possible to inhibit the generation of vibration and noise. 
     Further, in the packaging container  1  according to the present embodiment, the bottom face (the bottom third plane part  33 ) of the stored item containing part  31  is parallel to the bottom face (the bottom first plane part  23 ) of the body part  3  and is formed closer to the engaged portion than the bottom face of the body part  3 . Because the stored item containing part  31  has a raised bottom due to this configuration, the stored item  7  within the stored item containing part  31  is not directly subjected to external forces from below, thereby ensuring that the stored item containing part  7  is held more reliably. 
     Further, in the packaging container  1  according to the present embodiment, the convex pattern  39  protruding from the engaged portion side and supporting the stored item  7  is provided on the bottom face of the stored item containing part  31 . This configuration can reduce a contact area of the stored item  7  within the stored item containing part  31 , prevent adhesion of the stored item  7 , and improve the ease of removal. 
     In the packaging container  1  according to the present embodiment, the inner lid  5  is detachably engaged with the lid  4 . As a result, because the bottom side of the stored item containing part  31  is exposed when the lid part  4  is opened or closed, the stored item  7  can be easily carried in and out. 
     Further, in the packaging container  1  according to the present embodiment, the body part  3  and the lid part  4  are formed as a single member, and are engaged with each other by folding the boundary portion  21 . This configuration can reduce the number of parts and manufacturing costs and can facilitate the assembly. 
     As described above, the present embodiment has been described with reference to the specific examples. However, the present disclosure is not limited to these embodiments. With respect to these design modifications applied as appropriate by those skilled in the art are also encompassed by the present disclosure as long as they possess the features of the present disclosure. The elements provided in each of the embodiments described above, and the arrangement, conditions, shape, and the like thereof, may be adapted and modified as appropriate without being limited to those exemplified. Each element provided by each of the above-described embodiments may vary in combination as appropriate, unless there is a technical inconsistency. 
     In the above-described embodiment, the body part  3  and the lid part  4  are famed integrally. However, the body part  3  and the lid part  4  may be separate members. Meanwhile, in the above-described embodiment, the main body  2  having the body part  3 , the lid part  4 , and the inner lid  5  are configured as separate members. However, the main body  2  and the inner lid  5  may be configured to be integrally formed. In this case, the inner lid  5  is connected to one side, for example, of the long side of the body part  3  or the lid part  4 , which is not the boundary portion  21 . 
     In the above-described embodiment, the stored item containing part  31  is provided in the body part  3 , and the chemical agent containing part  41  is provided in the lid part  4 . However, in contrast to the above-described configuration, the stored item containing part  31  is provided in the lid part  4  and the chemical agent containing part  41  is provided in the body part  3 . 
     In the above-described embodiment, the sheet-shaped stored item  7  is exemplified, but the shape of the stored item  7  may be other than the sheet shape. Further, in the above-described embodiment, the deoxygenating and/or dehydrating chemical agent  8  is exemplified. However, the function of the chemical agent  8  may be other than deoxygenating and dehydrating. 
     The present international application claims priority to Japanese Patent Application No. 2019-122171, filed Jun. 28, 2019, the entire contents of which are hereby incorporated by reference herein. 
     DESCRIPTION OF SYMBOLS 
     
         
         
           
               1  packaging container 
               2  main body 
               3  body part (first member)
             31  stored item containing part     33  lower third plane part (bottom face of stored item containing part)     34  groove     39  convex pattern   
         
               4  lid part (second member)
             41  chemical agent containing part   
         
               5  inner lid
             51  first principal face     52  second principal face     53  frame projection     54  ear part     55  recess   
         
               6  ventilation path 
               7  stored item 
               8  chemical agent