Patent Publication Number: US-2023150743-A1

Title: Sheet member container

Description:
TECHNICAL FIELD 
     The present invention relates to a sheet member container. 
     BACKGROUND ART 
     A sheet member container having a structure in which a plurality of film layers are laminated and a filler such as air is enclosed between the layers to form a filling portion is described, for example, in Patent Document 1. The filling portion of the sheet member container of Patent Document 1 is arranged across a first surface portion (a body portion) and a second surface portion (a bottom portion). 
     Related Art Document 
     Patent Document 1: Japanese Patent No. 6153185 
     SUMMARY OF THE INVENTION 
     The present invention relates to a sheet member container including one or a plurality of sheet members including a main-body forming sheet member including an outer film layer and an inner film layer laminated on each other, wherein the sheet member container further includes a containing portion that accommodates contents, and a container main body including the main-body forming sheet member, and surrounding the containing portion, the main-body forming sheet member includes a main-body sealing portion that is an attached portion of the outer film layer and the inner film layer, and a non-attached region in which the outer film layer and the inner film layer are partially not attached, and includes a filling portion in which a filler can be enclosed between layers of the outer film layer and the inner film layer in the non-attached region, the sheet member container further includes a peripheral edge sealing portion in which the one or plurality of sheet members are folded along a folding line, and portions in a peripheral edge portion of at least an innermost layer sheet member of the one or plurality of sheet members are attached to each other, the containing portion is defined by the peripheral edge sealing portion, the container main body includes a plurality of surface portions, the plurality of surface portions include a first surface portion and a second surface portion that are adjacent to each other, the filling portion includes an interfacial connecting portion arranged across the first surface portion and the second surface portion via a boundary between the first surface portion and the second surface portion, and in the boundary, an end portion of the peripheral edge sealing portion along the folding line is away from a boundary position between the interfacial connecting portion and the main-body sealing portion. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a perspective view illustrating a state where a filler is enclosed in a sheet member container according to a first exemplary embodiment. 
         FIG.  2    is a front view illustrating a state where the filler is enclosed in the sheet member container according to the first exemplary embodiment. 
         FIG.  3    is a plane view illustrating a state where the filler is enclosed in the sheet member container according to the first exemplary embodiment, and a cap portion is removed. 
         FIG.  4    is a bottom view of the sheet member container according to the first exemplary embodiment. 
         FIG.  5    is a cross-sectional view taken along the A-A line in  FIG.  2   . 
         FIG.  6    is a cross-sectional view taken along the B-B line in  FIG.  2   . 
         FIG.  7    is a cross-sectional view taken along the A-A line in  FIG.  6   . 
         FIG.  8    is an exploded perspective view illustrating an outer film layer and an inner film layer of a main-body forming sheet member. 
         FIG.  9    is an exploded perspective view illustrating an inner-bag forming sheet member and the main-body forming sheet member. 
         FIG.  10    is a plane view illustrating a container forming sheet member including the inner-bag forming sheet member and the main-body forming sheet member that are laminated on each other. 
         FIG.  11    is a partially enlarged view of the container forming sheet member. 
         FIG.  12    is a perspective view illustrating the sheet member container according to the first exemplary embodiment, and illustrating a state before the filler is enclosed. 
         FIG.  13    is a flat cross-sectional view illustrating a state where a filler is enclosed in a sheet member container according to a second exemplary embodiment. 
         FIG.  14    is a side cross-sectional view illustrating a state where the filler is enclosed in the sheet member container according to the second exemplary embodiment. 
         FIG.  15    is a cross-sectional view taken along the A-A line in  FIG.  14   . 
         FIG.  16    is a plane view of a container forming sheet member that constitutes a sheet member container according to a third exemplary embodiment. 
         FIG.  17    is a plane view illustrating a state where a filler is enclosed in the sheet member container according to the third exemplary embodiment. 
         FIG.  18    is a partially enlarged view of a container forming sheet member for explaining a configuration of a sheet member container according to Modification 1. 
         FIG.  19    is a partially enlarged view of a container forming sheet member for explaining a configuration of a sheet member container according to Modification 2. 
         FIG.  20    is a partially enlarged view of a container forming sheet member for explaining a configuration of a sheet member container according to Modification 3. 
         FIG.  21    is a partially enlarged view of a container forming sheet member for explaining a configuration of a sheet member container according to Modification 4. 
         FIG.  22    is a partially enlarged view of a container forming sheet member for explaining a configuration of a sheet member container according to Modification 5. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     According to investigation by the present inventor, there is still room for improvement in terms of fillability of a filling portion with a filler in a sheet member container of Patent Document 1. 
     The present invention relates to a sheet member container including a structure with excellent fillability of a filling portion with a filler. 
     Below, preferable exemplary embodiments according to the present invention will be described with reference to the drawings. Note that, in all the drawings, the same reference characters are attached to similar constituent components, and detailed explanation thereof will not be repeated. 
     First Exemplary Embodiment 
     First, a first exemplary embodiment will be described with reference to  FIG.  1    to  FIG.  12   . In the drawings,  FIG.  1    to  FIG.  7    illustrate a sheet member container  100  in a state where a filler is enclosed. 
     The sheet member container  100  according to this exemplary embodiment is the sheet member container  100  including one or a plurality of sheet members including a main-body forming sheet member  21  including an outer film layer  22  and an inner film layer  23  laminated on each other, and includes a containing portion  17  that stores contents  18 , and a container main body  20  including the main-body forming sheet member  21  and surrounding the containing portion  17 . The main-body forming sheet member  21  includes a main-body sealing portion  26  ( FIG.  7   ,  FIG.  9   , and the like) that is an attached portion of the outer film layer  22  and the inner film layer  23 , and a non-attached region  24  in which the outer film layer  22  and the inner film layer  23  are partially not attached, and includes a filling portion  60  in which the filler can be enclosed between layers of the outer film layer  22  and the inner film layer  23  in the non-attached region  24 . The sheet member container  100  includes a peripheral edge sealing portion  19  in which one or a plurality of sheet members are folded along folding lines  81 ,  82 ,  83 ,  84 ,  85  and  86  ( FIG.  10    and  FIG.  12   ), and in which portions in a peripheral edge portion of at least an innermost layer sheet member (in a case of this exemplary embodiment, an inner-bag forming sheet member  41 ) of the one or plurality of sheet members are attached to each other. The containing portion  17  is defined by the peripheral edge sealing portion  19 . The container main body  20  includes a plurality of surface portions, and the plurality of surface portions include a first surface portion (in the case of this exemplary embodiment, a first main surface portion  20   a ) and a second surface portion (in the case of this exemplary embodiment, a top gusset portion  14 ) that are adjacent to each other. The filling portion  60  includes an interfacial connecting portion  65  arranged across the first surface portion and the second surface portion via a boundary between the first surface portion and the second surface portion. As illustrated in  FIG.  7   ,  FIG.  11    and  FIG.  12   , in the boundary between the first surface portion and the second surface portion, an end portion  19   a  of the peripheral edge sealing portion  19  along the folding line  84  is away from a boundary position  26   a  between the interfacial connecting portion  65  and the main body sealing portion  26 . 
     According to this exemplary embodiment, in the boundary between the first surface portion and the second surface portion, the end portion  19   a  of the peripheral edge sealing portion  19  along the folding line  84  is away from the boundary position  26   a  between the interfacial connecting portion  65  and the main-body sealing portion  26 . Consequently, the boundary between the first surface portion and the second surface portion has a structure in which film layers that constitute the sheet member container  100  are peeling off each other also in a region on an outer side of the interfacial connecting portion  65  (a region from the end portion  19   a  of the peripheral edge sealing portion  19  to the boundary position  26   a  between the interfacial connecting portion  65  and the main-body sealing portion  26 ). Consequently, movement of the outer film layer  22  and the inner film layer  23  that constitute the interfacial connecting portion  65  (non-attached region  24 ) is hard to be regulated, and a space between the layers of the outer film layer  22  and the inner film layer  23  (a space in the non-attached region  24 ) is easily acquired. Therefore, when the filling portion  60  is filled with the filler in a folded state along the folding line  84 , the filler can easily flow between the filling portion  60  of the first surface portion and the filling portion  60  of the second surface portion. For example, firstly the filling portion  60  of the first surface portion and then the filling portion  60  of the second surface portion can be easily filled with the filler through the interfacial connecting portion  65 . That is, the sheet member container  100  having the structure excellent in fillability of the filling portion  60  with the filler can be provided. 
     In the case of this exemplary embodiment, the sheet member container  100  includes a bottom gusset portion  13  ( FIG.  2    and  FIG.  4   ) as a bottom portion, and can stand independently in a state where the bottom gusset portion  13  is mounted on a horizontal mounting surface. 
     In this exemplary embodiment, the positional relationship (up-down relationship or the like) of each constituent component of the sheet member container  100  is described in terms of a positional relationship in a state where the sheet member container  100  is caused to stand independently as illustrated in  FIG.  1    and  FIG.  2   , unless otherwise specified. However, the positional relationship in this description does not necessarily match the positional relationship at the time of using or manufacturing the sheet member container  100 . 
     Furthermore, in connection with the positional relationship of each constituent component of the sheet member container  100 , the positional relationship illustrated in each of the drawings may be described. 
     A front surface side (side of the viewer of a paper surface in  FIG.  2   ) of the sheet member container  100  is referred to as a forward direction; a back surface side (side away from the viewer of the paper surface in  FIG.  2   ) of the sheet member container  100  is referred to as a rearward direction; the left side (left side in  FIG.  2   ) as viewed from the front surface of the sheet member container  100  is referred to as a leftward direction; and the right side (right side in  FIG.  2   ) as viewed from the front surface of the sheet member container  100  is referred to as a rightward direction. Furthermore, the left-right direction of the sheet member container  100  may be referred to as a widthwise direction. 
     In the present invention, types of contents  18  are not specifically limited. The contents  18  include, for example, shampoo, conditioner, body soap, detergent, bleach, softener, beverage, and food, and include engine oil, chemical agent, and the like. 
     In addition, the contents  18  may be a liquid (including a form of paste), or may be a solid (for example, in a form of particle (including a form of grain) or in a form of powder). 
     In the case of this exemplary embodiment, the contents  18  are, for example, a liquid. 
     In a case where the contents  18  are a liquid, a viscosity of the contents  18  at, for example, 30° C. preferably falls in a range of equal to or more than 1 mPa·s and equal to or less than 120000 mPa·s (measured by a B-type viscometer; for example, measured using viscometer TV-10 or viscometer TVB-10 made by Toki Sangyo Co., LTD. or the like), and more preferably falls in a range of equal to or more than 1 mPa·s and equal to or less than 60000 mPa·s. 
     In the case of this exemplary embodiment, the container main body  20  is formed into a bag shape including a body portion  11 , the top gusset portion  14  arranged on an upper side of the body portion  11 , and the bottom gusset portion  13  arranged on a lower side of the body portion  11 . However, the present invention is not limited to this example, and the container main body  20  does not have to include the top gusset portion  14 , or does not have to include the bottom gusset portion  13 . 
     The container main body  20  surrounds the containing portion  17  (surrounds an inner bag  40  in the case of this exemplary embodiment). The container main body  20  constitutes a shell of the sheet member container  100 . Below, the body portion  11 , the top gusset portion  14  and the bottom gusset portion  13  of the container main body  20  may be referred to as the body portion  11 , the top gusset portion  14  and the bottom gusset portion  13  of the sheet member container  100 . 
     The shape of the front surface of the body portion  11  is not specifically limited. However, in the case of this exemplary embodiment, as illustrated, for example, in  FIG.  2   , the shape is a vertically long shape having a substantially constant width size, and an upper edge of the body portion  11  is formed into an upward protruding arc shape. 
     As illustrated in  FIG.  5   , the body portion  11  includes the first main surface portion  20   a  (front panel) and a second main surface portion  20   b  (rear panel), which are opposed to each other with the containing portion  17  being arranged therebetween. The first main surface portion  20   a  is located at a front surface side, and the second main surface portion  20   b  is located at a back surface side (also see  FIG.  1    to  FIG.  3   ). 
     The first main surface portion  20   a  is formed, for example, in left-right symmetry, and the second main surface portion  20   b  is also formed, for example, in left-right symmetry. Also, the first main surface portion  20   a  and the second main surface portion  20   b  are formed, for example, in forward-rearward symmetry excluding the interfacial connecting portion  65  of the filling portion  60  that will be described later. 
     The first main surface portion  20   a  convexly bulges forward, and the second main surface portion  20   b  convexly bulges rearward. 
     The container main body  20  is formed by folding the main-body forming sheet member  21  (see  FIG.  8    and  FIG.  9   ) and attaching peripheral edge portions of the main-body forming sheet member  21  to each other (attaching the portions to each other via the inner-bag forming sheet member  41  that constitutes the inner bag  40  in the case of this exemplary embodiment). 
     The planar shape of the top gusset portion  14  is not specifically limited, but in the case of this exemplary embodiment, as illustrated in  FIG.  3   , the top gusset portion  14  is formed into a shape having a front-back width reduced as being from a central portion toward the left in the widthwise direction, and reduced as being from the central portion toward the right in the widthwise direction. The top gusset portion  14  is formed into, for example, a horizontal tonsil shape. 
     The container main body  20  includes a gusset-portion peripheral edge sealing piece  45  arranged along a peripheral edge of the top gusset portion  14 , and side portion sealing pieces  46  extending in an up-down direction along left and right edge portions of the body portion  11 , respectively. The gusset-portion peripheral edge sealing piece  45  and the side portion sealing pieces  46 , for example, stand outward from the container main body  20 . 
     The gusset-portion peripheral edge sealing piece  45  surrounds the top gusset portion  14  in a circular shape, for example, excluding a portion where the interfacial connecting portion  65  described later exists. 
     The gusset-portion peripheral edge sealing piece  45  includes a first surface-portion-side sealing piece  45   a  arranged along a boundary between a gusset portion (top gusset portion  14 ) and the first main surface portion  20   a , and a second surface-portion-side sealing piece  45   b  arranged along a boundary between the gusset portion and the second main surface portion  20   b.    
     In the case of this exemplary embodiment, the inner bag  40  is formed (see  FIG.  5   ) by attaching portions in the peripheral edge portion of the inner-bag forming sheet member  41  (see  FIG.  9   ) to each other. That is, the inner bag  40  having a bag shape is formed by folding the inner-bag forming sheet member  41  and attaching the peripheral edge portions of the inner-bag forming sheet member  41  to each other. The inner bag  40  is covered with the container main body  20 . The inner bag  40  includes the containing portion  17  within the inner bag  40 . 
     Thus, the sheet member container  100  includes the inner bag  40  arranged in an inside of the container main body  20 , and the inner bag  40  includes the inner-bag forming sheet member  41  that is an innermost layer sheet member of one or a plurality of sheet members that constitute the sheet member container  100 . 
     However, in the present invention, in a case where an inner container defining the containing portion  17  is arranged in an disposed inside of the container main body  20 , the inner container is not limited to the inner bag  40  including the sheet member, and may be formed, for example, through blow molding. 
     The shape of the inner bag  40  is not specifically limited. However, in the case of this exemplary embodiment, the inner bag  40  is formed into a shape similar to that of the container main body  20 . 
     As illustrated in  FIG.  5   , the inner bag  40  includes a first main surface portion  40   a  located at the front surface side and a second main surface portion  40   b  located at the back surface side with the containing portion  17  being arranged therebetween. 
     The sheet member container  100  includes, for example, a spout member  15  arranged to penetrate through the top gusset portion  14 , and a cap portion  70  mounted (for example, detachably mounted) to the spout member  15 . 
     More specifically, for example, as illustrated in  FIG.  2   ,  FIG.  3    and  FIG.  6   , the spout member  15  includes a cylindrical outlet cylinder portion  15   a  through which the contents  18  are caused to pass, and a plate shape portion  15   b  having a plate shape and arranged at one end (lower end) of the outlet cylinder portion  15   a  in an axial direction to be perpendicular to this axial direction, the portions being provided in an integral manner. The outlet cylinder portion  15   a  has an outer peripheral surface in which a thread is formed, and the outlet cylinder portion  15   a  has an external screw shape. The outlet cylinder portion  15   a  penetrates through the top gusset portion  14  in the up-down direction, and protrudes upward from the top gusset portion  14 . 
     The plate shape portion  15   b  protrudes from the lower end of the outlet cylinder portion  15   a  toward a periphery thereof in a flange manner. The planar shape of the plate shape portion  15   b  is not specifically limited, and may be, for example, a substantially square shape ( FIG.  3   ). 
     The plate shape portion  15   b  is arranged, for example, on an inner surface or an external surface of a portion arranged along the top gusset portion  14  of the body portion  11  in the inner-bag forming sheet member  41 . As illustrated, for example, in  FIG.  6   , the plate shape portion  15   b  is attached to an inner surface (lower surface) of the inner-bag forming sheet member  41  in the top gusset portion  14 , in an attached portion  91 . Consequently, the plate shape portion  15   b  is attached to the main-body forming sheet member  21  via the inner-bag forming sheet member  41 . However, the present invention is not limited to this example, and the plate shape portion  15   b  may be attached directly to the inner film layer  23  of the main-body forming sheet member  21 . The attached portion  91  surrounds the periphery of the outlet cylinder portion  15   a  in a circular shape in plane view. The attached portion  91  is formed, for example, in the same region as in the annular main-body sealing portion  26  (see  FIG.  10   ) located around an insert hole  21   a.    
     An opening  15   c  in a tip end of the outlet cylinder portion  15   a  is a discharge port through which the contents  18  are discharged from the containing portion  17 . In the plate shape portion  15   b,  an opening  15   d  is formed coaxially with an inner space of the outlet cylinder portion  15   a.  The contents  18  in the containing portion  17  are discharged outward through the opening  15   d  and the opening  15   c.    
     Thus, the discharge port (opening  15   c ) through which the contents  18  are discharged from the containing portion  17  is arranged in the second surface portion (top gusset portion  14 ). 
     Further, in the second surface portion (top gusset portion  14 ), the plate shape portion  15   b  including the opening (opening  15   d ) that communicates to the discharge port (opening  15   c ) is arranged, and the above one or plurality of sheet members are attached to the plate shape portion  15   b.    
     The cap portion  70  includes a mounting portion  71  that is a cylindrical portion with an internal screw shape removably screwed to the outlet cylinder portion  15   a,  a pump portion  72  fixed to the mounting portion  71 , a dip tube  77  extending downward from the pump portion  72 , and a head portion  73  held by the pump portion  72  to be raised and lowered to the pump portion  72 . 
     The head portion  73  includes, for example, a support cylinder portion  74  protruding upward from the pump portion  72 , and a nozzle portion  75  protruding horizontally from an upper end portion of the head portion  73 , and a discharge port  76  through which the contents  18  are discharged is formed at a tip end of the nozzle portion  75 . 
     A flow path (not shown in the drawings) of the contents  18  in the cap portion  70  is arranged to penetrate through the opening  15   d  and the opening  15   c  in the up-down direction. 
     When the head portion  73  is pushed into the pump portion  72  (pushed downward), the pump portion  72  operates to discharge the contents  18  through the discharge port  76 . 
     In the case of this exemplary embodiment, as illustrated in  FIG.  1    to  FIG.  6   , the filling portion  60  includes, for example, a first filling portion  61  formed into a circular shape along a peripheral edge portion of the first main surface portion  20   a,  a second filling portion  62  formed into a circular shape along a peripheral edge portion of the second main surface portion  20   b,  a third filling portion  63  ( FIG.  4   ) formed into a circular shape along a peripheral edge portion of the bottom gusset portion  13 , and a fourth filling portion  64  ( FIG.  3   ) formed into a circular shape around the outlet cylinder portion  15   a  in the top gusset portion  14 . 
     A lower edge of the first filling portion  61  is connected to a front edge of the third filling portion  63 , a lower edge of the second filling portion  62  is connected to a rear edge of the third filling portion  63 , and a central portion of an upper end portion of the first filling portion  61  in a widthwise direction is connected to a central portion of a front-end portion of the fourth filling portion  64  in the widthwise direction. 
     The sheet member container  100  includes the filling portion  60  with this structure, and accordingly structural strength is sufficiently acquired substantially over the whole container main body  20 . 
     In the case of this exemplary embodiment, the whole filling portion  60  is formed in an integrated manner. 
     Alternatively, in the present invention, the sheet member container  100  may include a plurality of filling portions  60  that are independent of each other. 
     Here, each of a connecting portion between the first filling portion  61  and the fourth filling portion  64 , a connecting portion between the first filling portion  61  and the third filling portion  63  and a connecting portion between the second filling portion  62  and the third filling portion  63  is the interfacial connecting portion  65 . 
     Each interfacial connecting portion  65  is narrowed. That is, the filling portion  60  is narrowed in the interfacial connecting portion  65 . Each of connecting portions  24   a  ( FIG.  9    and  FIG.  10   ) that are portions forming the interfacial connecting portions  65  in the non-attached region  24  is narrowed. Consequently, when the filler is enclosed, a speed of the filler that passes through the interfacial connecting portion  65  increases, and hence the filler can easily flow between the filling portion  60  of the first surface portion and the filling portion  60  of the second surface portion. All regions of the filling portion  60  in the sheet member container  100  can be easily filled with a predetermined amount of filler. 
     In the case of this exemplary embodiment, the container main body  20  includes the body portion  11  and the top portion (top gusset portion  14 ). One main surface portion (the first main surface portion  20   a ) of the body portion  11  is the first surface portion, and the top portion is the second surface portion. 
     Then, the filling portion  60  includes the first filling portion  61  formed along the peripheral edge portion of the main surface portion (first main surface portion  20   a ), and the fourth filling portion  64  formed around the discharge port in the top portion (top gusset portion  14 ), and the first filling portion  61  is connected to the fourth filling portion  64  via the interfacial connecting portion  65 . 
     Additionally, in the case of this exemplary embodiment, the container main body  20  includes the body portion  11  and the bottom portion (bottom gusset portion  13 ). One main surface portion (the first main surface portion  20   a ) of the body portion  11  is the first surface portion, and the bottom portion (bottom gusset portion  13 ) is the second surface portion. 
     Then, the filling portion  60  includes the first filling portion  61  formed along the peripheral edge portion of the main surface portion (first main surface portion  20   a ), and the third filling portion  63  formed along the peripheral edge portion of the bottom portion (bottom gusset portion  13 ), and the first filling portion  61  is connected to the third filling portion  63  via the interfacial connecting portion  65 . 
     Further, in the case of this exemplary embodiment, the other main surface portion (second main surface portion  20   b ) of the body portion  11  and the bottom portion (bottom gusset portion  13 ) also have a relationship between the first surface portion and the second surface portion. 
     Each interfacial connecting portion  65  is arranged in a central portion of the sheet member container  100  in the widthwise direction. Consequently, when the filler is enclosed, the filler evenly flows through the filling portion  60 , which improves fillability. 
     As illustrated in  FIG.  8    and  FIG.  9   , the main-body forming sheet member  21  is formed by laminating and attaching the outer film layer  22  that constitutes an external surface side of the container main body  20  and the inner film layer  23  that constitutes an inner surface side of the container main body  20  onto each other. That is, as an example, in the case of this exemplary embodiment, the main-body forming sheet member  21  includes two film layers of the outer film layer  22  and the inner film layer  23 . However, the present invention is not limited to this example, and the main-body forming sheet member  21  may include a film layer other than the outer film layer  22  or the inner film layer  23 . 
     In the case of this exemplary embodiment, the outer film layer  22  and the inner film layer  23  are formed into the same shape. However, the present invention is not limited to this example. The outer film layer  22  and the inner film layer  23  may have shapes different from each other. In a case where the shapes are different, it is preferable that the shape of the outer film layer  22  is larger than that of the inner film layer  23 . 
     In the outer film layer  22  and the inner film layer  23 , insert holes are formed into which the outlet cylinder portion  15   a  of the spout member  15  is inserted. 
     In the main-body forming sheet member  21 , the non-attached region  24  ( FIG.  9   ) in which the outer film layer  22  and the inner film layer  23  are partially not attached is formed. For example, a non-attaching treatment is partially applied to a surface of one or both of the outer film layer  22  and the inner film layer  23 , this surface facing a surface of the other layer. The non-attaching treatment can be easily performed by applying a non-attaching agent (so-called adhesion inhibiting agent) to bring an adhesion inhibiting state. For the adhesion inhibiting agent, any agent can be used, provided that it can inhibit the outer film layer  22  and the inner film layer  23  from being attached together. For the adhesion inhibiting agent, it is possible to preferably use, for example, printing ink, medium ink, ink dedicated to adhesion inhibition, or the like for use in offset printing, flexography, and letterpress printing (relief printing). In addition, it is also possible to preferably use thermosetting ink or UV curable ink. The range to which the non-attaching treatment is applied is to be the non-attached region  24 . When the filler is enclosed in the non-attached region  24 , the filling portion  60  is formed. 
     The filling portion  60  is not necessarily limited to a filling portion formed in the whole non-attached region  24 , and may be formed in some of a plurality of non-attached regions  24 . 
       FIG.  8    illustrates, with hatching that rises to the right for convenience, a region in which the outer film layer  22  and the inner film layer  23  are attached to each other to form the main-body sealing portion  26 . 
       FIG.  9    and  FIG.  10    illustrate, with hatching that rises to the right for convenience, a region in which the outer film layer  22  and the inner film layer  23  are attached to each other to define the non-attached region  24  in the main-body forming sheet member  21 , that is, a region in which the main-body sealing portion  26  is formed. 
     Further,  FIG.  9    illustrates, with a dashed line, a seal boundary line  21   c  that is a boundary line between the seal region of the peripheral edge portion of the main-body forming sheet member  21  and another region. In the case of this exemplary embodiment, the outer film layer  22  and the inner film layer  23  are attached to each other and the inner film layer  23  and the inner-bag forming sheet member  41  are attached to each other, in a region on an outer side of the seal boundary line  21   c  of the main-body forming sheet member  21  when a bag is formed. 
     As for a method of attaching the outer film layer  22  and the inner film layer  23  together, heat sealing, ultrasonic sealing, attaching with adhesive or the like may be used as an example. 
     In the case of this exemplary embodiment, each of the outer film layer  22  and the inner film layer  23  has a layer structure including a plurality of resin layers. Also, the inner-bag forming sheet member  41  has a layer structure including a plurality of resin layers. 
     The main-body forming sheet member  21  preferably includes the resin layer of at least one type of polyethylene, polypropylene, polyester, and polyamide. 
     A material of the resin layer that constitutes the outer film layer  22  and the inner film layer  23  of the main-body forming sheet member  21  is not specifically limited. For example, the material is more preferably one of a polyethylene material such as high density polyethylene (HDPE), medium density polyethylene (MDPE), low density polyethylene (LDPE), linear low-density polyethylene (LLDPE), ultralow density polyethylene (ULDPE) or ethylene-vinyl alcohol copolymer (EVOH); a polypropylene material such as oriented polypropylene (OPP), cast polypropylene (CPP), isotactic PP, syndiotactic PP, atactic PP, random PP or block PP; a polyester material such as polyethylene terephthalate (PET), amorphous polyethylene terephthalate (amorphous PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN) or polybutylene naphthalate (PBN); or a polyamide material such as oriented nylon (ONy), cast nylon (CNy), nylon 6, nylon 66, nylon 11, nylon 12 or MXD6. Of these materials, the above polyethylene material is especially preferable. 
     As one example, the outer film layer  22  has a four-layer structure formed by laminating four resin layers of a first layer, a second layer, a third layer, and a fourth layer in this order. 
     Of these layers, the first layer constitutes an external surface of the container main body  20 . The first layer includes, for example, polyethylene terephthalate (PET) or oriented nylon (ONy). The main function of the first layer is to provide the container main body  20  with a feeling of gloss and printability, and to provide the container main body  20  with rigidity. 
     The second layer is, for example, a layer of transparent deposition PET including polyethylene terephthalate obtained through vapor deposition of silica and/or alumina on a surface of this second layer on the first layer side. The main function of the second layer is to provide the container main body  20  with a gas barrier property. 
     The third layer includes, for example, oriented nylon. The main function of the third layer is to provide the container main body  20  with a pinhole resistance. 
     The fourth layer includes, for example, linear low-density polyethylene (LLDPE). The main function of the fourth layer is to achieve a heat seal property with the inner film layer  23 . 
     An example of the layer structure of the inner film layer  23  is a structure including a fifth layer including, for example, linear low-density polyethylene (LLDPE) in addition to a layer structure similar to the outer film layer  22  including the first layer to the fourth layer. The fifth layer is adjacent to the first layer, and constitutes a surface opposite to the fourth layer in the inner film layer  23 . The main function of the fifth layer is to achieve a heat seal property with the outer film layer  22 . 
     The main function of the fourth layer of the inner film layer  23  is to achieve a heat seal property with the inner-bag forming sheet member  41 . 
     However, the layer structure of the outer film layer  22  and the inner film layer  23  is not limited to the above example, and the material of each of the layers that constitute the outer film layer  22  and the inner film layer  23  is not limited to the examples described above. 
     As one example, the inner-bag forming sheet member  41  that constitutes the inner bag  40  has a three-layer structure formed by laminating a first layer, a second layer and a third layer in this order. 
     Of these layers, the first layer includes, for example, linear low-density polyethylene. The main function of the first layer is to achieve a heat seal property (heat seal property with the inner film layer  23 ) with the main-body forming sheet member  21 . 
     The second layer is, for example, a layer of transparent deposition oriented nylon including oriented nylon obtained through vapor deposition of silica and/or alumina on a surface of this second layer on the first layer side. The main function of the second layer is to achieve a gas barrier property and a pinhole resistance. 
     The third layer includes, for example, linear low-density polyethylene. The main function of the third layer is to achieve a heat seal property between portions of the inner-bag forming sheet member  41 . 
     In addition, the layer structure of the inner-bag forming sheet member  41  is not limited to the structure described here. 
     As illustrated in  FIG.  9    and  FIG.  10   , the inner-bag forming sheet member  41  is laminated on the main-body forming sheet member  21 , and as illustrated in  FIG.  10   , a peripheral edge portion of the inner film layer  23  and the peripheral edge portion of the inner-bag forming sheet member  41  are attached to each other, and a peripheral edge portion of the outer film layer  22  and the peripheral edge portion of the inner film layer  23  are attached to each other. Consequently, the main-body forming sheet member  21  and the inner-bag forming sheet member  41  constitute a container forming sheet member  51 . 
     Here, a sealing portion of a peripheral edge portion of the container forming sheet member  51  is referred to as a peripheral edge sealing portion  52 . The peripheral edge sealing portion  52  includes a sealing portion (below, an inner-outer sealing portion  43 ) between the peripheral edge portion of the inner film layer  23  and the peripheral edge portion of the inner-bag forming sheet member  41 , and a sealing portion (below, a main-body peripheral edge sealing portion  28 ) between the peripheral edge portion of the outer film layer  22  and the peripheral edge portion of the inner film layer  23 . 
       FIG.  10    illustrates a region in which the peripheral edge sealing portion  52  is formed, with hatching that rises to the left. Also, in  FIG.  10   , hatching that rises to the left and hatching that rises to the right are overlapped in a region where the region in which the peripheral edge sealing portion  52  is formed overlaps with a region in which the main-body sealing portion  26  is formed. 
     As for a method of forming the peripheral edge sealing portion  52 , heat sealing, ultrasonic sealing, attaching with adhesive or the like may be used as an example. 
     As illustrated in  FIG.  10   , the main-body forming sheet member  21  includes, for example: a first sheet portion  31  that is a portion constituting the first main surface portion  20   a;  a second sheet portion  32  that is a portion constituting the second main surface portion  20   b ; a bottom-gusset forming sheet portion  38  that is a portion constituting the bottom gusset portion  13 ; a top-gusset forming sheet portion  39  that is a portion constituting the top gusset portion  14 ; and a tube-shaped extending portion  25 . For example, the extending portion  25  extends outward from the second sheet portion  32 . 
     The insert hole  21   a  into which the outlet cylinder portion  15   a  of the spout member  15  is inserted is formed in the top-gusset forming sheet portion  39 . 
     In the case of this exemplary embodiment, the non-attached region  24  is formed into a shape corresponding to a shape of the filling portion  60  of the sheet member container  100 . 
     In the non-attached region  24 , a portion  24   b  that forms the fourth filling portion  64  is formed into a circular shape that surrounds the insert hole  21   a  as illustrated, for example, in  FIG.  10   . More specifically, for example, an outer edge (external line) of the portion  24   b  has a shape slightly smaller than an external line of the top-gusset forming sheet portion  39 , and an inner edge of the portion  24   b  has a circular shape slightly larger than that of the insert hole  21   a.    
     In the case of this exemplary embodiment, the inner-bag forming sheet member  41  is formed into the same shape as in a portion of the main-body forming sheet member  21  excluding the extending portion  25 . 
     In addition,  FIG.  9    illustrates a seal boundary line  41   a  of the inner-bag forming sheet member  41 , with a dashed line for convenience. The seal boundary line  41   a  is a boundary line between a region in which the inner-bag forming sheet member  41  is attached (sealed) to the main-body forming sheet member  21  and another region in the inner-bag forming sheet member  41 , and is also a boundary line between a region in which portions of the inner-bag forming sheet member  41  are attached to each other and the other region in the inner-bag forming sheet member  41  when the sheet member container  100  is formed by using the container forming sheet member  51 . 
     In the case of this exemplary embodiment, a position of the seal boundary line  41   a  and a position of the seal boundary line  21   c  correspond to each other (overlap with each other). 
     An insert hole  41   b  into which the outlet cylinder portion  15   a  of the spout member  15  is inserted is formed in a portion of the inner-bag forming sheet member  41  that overlaps with the top-gusset forming sheet portion  39 . 
     The plate shape portion  15   b  of the spout member  15  is attached to, for example, an inner surface of the portion of the inner-bag forming sheet member  41  that overlaps with the top-gusset forming sheet portion  39 . The outlet cylinder portion  15   a  is caused to pass through the insert hole  41   b  of the inner-bag forming sheet member  41  and the insert hole  21   a  of the top-gusset forming sheet portion  39 , and protrudes toward the external surface side of these sheets. 
     Peripheral edge portions of the container forming sheet member  51  (the portions of the inner-bag forming sheet member  41 ) are attached to each other in a state where the container forming sheet member  51  is folded as valley fold along the folding line  81 , the folding line  82 , and the folding line  84  illustrated in  FIG.  10   , and is folded as mountain fold along the folding line  83  and the folding line  85 . With this operation, the container forming sheet member  51  is formed into a bag shape with a double structure. Here, the valley fold means a way of folding in which it protrudes toward the side going away from the viewer of  FIG.  10   , and the mountain fold means a way of folding in which it protrudes toward the viewer of  FIG.  10   . 
     That is, edge portions of the inner-bag forming sheet member  41  are attached to each other to form an inner-bag sealing portion  42  (see  FIG.  1   ). Thus, using the inner-bag forming sheet member  41 , the inner bag  40  is formed. In addition, the bag-shaped container main body  20  that covers the inner bag  40  is formed. 
     As for a method of attaching the portions of the inner-bag forming sheet member  41  to each other, heat sealing, ultrasonic sealing, attaching with adhesive or the like may be used as an example. 
     In the case of this exemplary embodiment, the main-body peripheral edge sealing portion  28 , the inner-bag sealing portion  42  and the inner-outer sealing portion  43  are arranged at positions that correspond to one another (positions that overlap with one another). The main-body peripheral edge sealing portion  28 , the inner-bag sealing portion  42  and the inner-outer sealing portion  43  are generically referred to as the peripheral edge sealing portion  19  (the peripheral edge sealing portion  19  includes the main-body peripheral edge sealing portion  28 , the inner-bag sealing portion  42  and the inner-outer sealing portion  43 ). 
     Consequently, in the case of this exemplary embodiment, each of the gusset-portion peripheral edge sealing piece  45  and the side portion sealing pieces  46  includes the main-body peripheral edge sealing portion  28 , the inner-bag sealing portion  42  and the inner-outer sealing portion  43 . 
     However, the present invention is not limited to this example, and the gusset-portion peripheral edge sealing piece  45  and the side portion sealing pieces  46  may only include the main-body peripheral edge sealing portion  28 . 
     A portion of the first sheet portion  31  on a top-gusset forming sheet portion  39  side of the folding line  85  is a first overlapping portion  31   a.  The first overlapping portion  31   a  is arranged to overlap with one half portion in the top-gusset forming sheet portion  39  in a state before the non-attached region  24  is filled with the filler. 
     A portion of the second sheet portion  32  that is located away from the bottom-gusset forming sheet portion  38  via the folding line  86  is a second overlapping portion  32   a.  The second overlapping portion  32   a  is arranged to overlap with the other half portion in the top-gusset forming sheet portion  39  in the state before the non-attached region  24  is filled with the filler. 
     Thus, as illustrated in  FIG.  12   , the container forming sheet member  51  is formed into a double bag shape, to obtain the sheet member container  100 . In the sheet member container  100 , for example, the filler is inputted from an inlet port  25   a  ( FIG.  10   ) formed in the extending portion  25  into the non-attached region  24 . Afterward, the non-attached region  24  is sealed at a portion continuously connected to a base end side of the extending portion  25 . This causes the filler to be enclosed in the non-attached region  24  (the filling portion  60 ). 
     In addition, a pressure within the filling portion  60  is not specifically limited. However, it is preferable that this pressure is higher than atmospheric pressure, and for example, can be set to be equal to or more than 10 kPa and equal to or less than 500 kPa (gauge pressure). 
     That is, the filling portion capable of containing the filler is a space located between layers of the outer film layer  22  and the inner film layer  23 , and capable of keeping sealability when the filler is enclosed substantially at a pressure in a range of equal to or more than 10 kPa and equal to or less than 500 kPa. 
     After formation of the filling portion  60  in which the filler is enclosed, the extending portion  25  is cut off, for example. 
     In this manner, the sheet member container  100  in which the filler is enclosed in the filling portion  60  is obtained (see  FIG.  1    to  FIG.  7   ). Alternatively, the extending portion  25  may remain even in a state of the sheet member container  100  in which the filler is enclosed. 
     After the sheet member container  100  is manufactured, the containing portion  17  is filled with the contents  18  through the outlet cylinder portion  15   a  of the spout member  15 . Afterward, the cap portion  70  is mounted to the spout member  15 . This makes it possible to obtain the sheet member container  100  in which the contents  18  are enclosed in the containing portion  17 . 
       FIG.  11    is a partially enlarged view of  FIG.  10   , and illustrates a boundary between the first sheet portion  31  that forms the first main surface portion  20   a  and the top-gusset forming sheet portion  39  that forms the top gusset portion  14 , and a portion in the vicinity of the boundary. 
     In the case of this exemplary embodiment, the outer film layer  22 , the inner film layer  23  and the inner-bag forming sheet member  41  have the same shape, and are laminated in a manner such that external lines match with one another. 
     Consequently, as illustrated in  FIG.  11   , in the boundary between the first sheet portion  31  that forms the first main surface portion  20   a  and the top-gusset forming sheet portion  39  that forms the top gusset portion  14 , an outer edge  22   a  of the outer film layer  22 , an outer edge  23   a  of the inner film layer  23  and an outer edge  41   c  of the inner-bag forming sheet member  41  align with one another. Also, in a boundary between the first sheet portion  31  and the bottom-gusset forming sheet portion  38  that forms the bottom gusset portion  13 , the outer edge  22   a  of the outer film layer  22 , the outer edge  23   a  of the inner film layer  23  and the outer edge  41   c  of the inner-bag forming sheet member  41  align with one another. Similarly, in a boundary between the second sheet portion  32  that forms the second main surface portion  20   b  and the bottom-gusset forming sheet portion  38 , the outer edge  22   a  of the outer film layer  22 , the outer edge  23   a  of the inner film layer  23  and the outer edge  41   c  of the inner-bag forming sheet member  41  also align with one another. 
     Then, also in a state after the container forming sheet member  51  forms the sheet member container  100 , the outer edge  22   a  of the outer film layer  22 , the outer edge  23   a  of the inner film layer  23  and the outer edge  41   c  of the inner-bag forming sheet member  41  align with one another in a boundary between the first main surface portion  20   a  and the top gusset portion  14 , a boundary between the first main surface portion  20   a  and the bottom gusset portion  13 , and a boundary between the second main surface portion  20   b  and the bottom gusset portion  13 . 
     In  FIG.  11   , a region that forms the peripheral edge sealing portion  19  after the bag is manufactured is denoted with a reference numeral of the peripheral edge sealing portion  19 . 
     As illustrated in  FIG.  11   , in the case of this exemplary embodiment, in the boundary between the first main surface portion  20   a  and the top gusset portion  14 , the main-body forming sheet member  21  is folded along the folding line  84 , and the peripheral edge portion of the first main surface portion  20   a  and a peripheral edge portion of the top gusset portion  14  are attached to each other by the peripheral edge sealing portion  19 . In the peripheral edge sealing portion  19 , all film layers that constitute the sheet member container  100  are attached. That is, in this exemplary embodiment, as illustrated in  FIG.  7   , six layers in total including the inner-bag forming sheet member  41 , the inner film layer  23  and the outer film layer  22  in the first main surface portion  20   a , and the inner-bag forming sheet member  41 , the inner film layer  23  and the outer film layer  22  in the top gusset portion  14  are attached in the peripheral edge sealing portion  19 . 
     As illustrated in  FIG.  7    and  FIG.  11   , the end portion  19   a  of the peripheral edge sealing portion  19  along the folding line  84  is away from the boundary position  26   a  between the interfacial connecting portion  65  and the main-body sealing portion  26 . Consequently, in the boundary between the first surface portion and the second surface portion, the region on the outer side of the interfacial connecting portion  65  (the region from the end portion  19   a  of the peripheral edge sealing portion  19  to the boundary position  26   a  between the interfacial connecting portion  65  and the main-body sealing portion  26 ) also has a structure where the film layers that constitute the sheet member container  100  (in this exemplary embodiment, the portions of the inner-bag forming sheet member  41 , and the inner-bag forming sheet member  41  and the inner film layer  23 ) peel off each other. In this exemplary embodiment, the peripheral edge sealing portion  19  includes six layers of the sheet members attached as described above and therefore has high rigidity. On the other hand, in the boundary between the first surface portion and the second surface portion, the end portion  19   a  of the peripheral edge sealing portion  19  is away from the interfacial connecting portion  65 , and hence the movement of the outer film layer  22  and the inner film layer  23  that constitute the interfacial connecting portion  65  (non-attached region  24 ) is hard to be regulated, and the space between the layers of the outer film layer  22  and the inner film layer  23  (the space in the non-attached region  24 ) is easily acquired. Consequently, when the filling portion is filled with the filler in the folded state along the folding line  84 , the filler can easily flow between the filling portion  60  of the first surface portion and the filling portion  60  of the second surface portion. For example, the filling portion  60  of the first surface portion and the filling portion  60  of the second surface portion can be easily filled with the filler through the interfacial connecting portion  65 . 
     Also, in the boundary between the first surface portion and the second surface portion, the main-body sealing portion  26  is adjacent to the peripheral edge sealing portion  19 . That is, the non-attached region  24  does not exist between the peripheral edge sealing portion  19  and the main-body sealing portion  26 . Consequently, in the state where the filler is enclosed in the filling portion  60 , it is possible to suppress defects that stress is concentrated on the non-attached region  24  and that the sheet member tears. 
     Further, in the boundary between the first main surface portion  20   a  and the top gusset portion  14 , a width size W 1  of the peripheral edge sealing portion  19  along the folding line  84  is equal to or more than a width size W 2  of the main-body sealing portion  26 , and preferably, the width size W 1  is larger than the width size W 2 . The width size W 1  is a width of a region in which the first main surface portion  20   a  (the first surface portion) is connected to the top gusset portion  14  (the second surface portion) along the folding line  84  of the main-body forming sheet member  21  in the peripheral edge sealing portion  19 . 
     The width size W 1  is equal to or more than the width size W 2 , so that rigidity of a peripheral edge portion of the container main body  20  can be sufficiently acquired. Also, since the width size W 1  is equal to or more than the width size W 2 , a contour of the boundary between the first main surface portion  20   a  and the top gusset portion  14  becomes clear. Therefore, a difference in appearance between the first main surface portion and the second main surface portion is hard to be made, and appearance of the sheet member container  100  can be favorably kept. 
     Also, in the boundary between the first main surface portion  20   a  and the top gusset portion  14 , a total value of the width size W 1  of the peripheral edge sealing portion  19  along the folding line  84  and the width size W 2  of the main-body sealing portion  26  is larger than a half of a width size W 3  of the interfacial connecting portion  65  (non-attached region  24 ). In other words, the width size W 3  is smaller than twice the total value of the width size W 1  and the width size W 2 . Consequently, the interfacial connecting portion  65  can be narrowed, and hence attractiveness of the boundary between the first main surface portion  20   a  and the top gusset portion  14  can be favorable. Here, the width size W 3  of the interfacial connecting portion  65  is a size in a state where the filler is not enclosed. 
     Also, at a position where the interfacial connecting portion  65  exists as viewed in a thickness direction of the sheet member, none of the film layers that constitute the sheet member container  100  are attached to each other. That is, in the interfacial connecting portion  65 , as illustrated in  FIG.  7   , a portion of the outer film layer  22 , a portion of the inner film layer  23 , a portion of the inner-bag forming sheet member  41 , another portion of the inner-bag forming sheet member  41 , another portion of the inner film layer  23  and another portion of the outer film layer  22  are laminated in this order, but none of these portions are attached. Consequently, the respective film layers in the non-attached region  24  can relatively move freely to a certain degree, and hence the space between the layers of the outer film layer  22  and the inner film layer  23  (the space in the non-attached region  24 ) can be more reliably acquired in the boundary between the first surface portion and the second surface portion. 
     Next, modifications will be described with reference to  FIG.  18    to  FIG.  22   . 
     Modification 1 
     In the above first exemplary embodiment, an example where the main-body sealing portion  26  is adjacent to the peripheral edge sealing portion  19  in the boundary between the first surface portion and the second surface portion has been described. On the other hand, in a case of Modification 1 illustrated in  FIG.  18   , a non-sealing portion  111  in which film layers are not attached to each other is interposed between a peripheral edge sealing portion  19  and a main-body sealing portion  26  in a boundary between a first surface portion and a second surface portion. In the non-sealing portion  111 , an outer film layer  22  and an inner film layer  23  are not attached, and also the inner film layer  23  and an inner-bag forming sheet member  41  are not attached. That is, in the non-sealing portion  111 , a portion of the outer film layer  22 , a portion of the inner film layer  23 , a portion of the inner-bag forming sheet member  41 , another portion of the inner-bag forming sheet member  41 , another portion of the inner film layer  23  and another portion of the outer film layer  22  are laminated in this order in a state of being not attached to each other. 
     Modification 2 
     In the above first exemplary embodiment and Modification 1, an example where the external lines of the outer film layer  22 , the inner film layer  23  and the inner-bag forming sheet member  41  match one another, that is, an example where the outer edge  22   a  of the outer film layer  22 , the outer edge  23   a  of the inner film layer  23  and the outer edge  41   c  of the inner-bag forming sheet member  41  align with one another in the boundary between the first surface portion and the second surface portion has been described. On the other hand, in a case of Modification 2 illustrated in  FIG.  19   , an external line of an inner film layer  23  is located on an inner side of an external line of an outer film layer  22 . That is, in a boundary between a first surface portion and a second surface portion, an outer edge  23   a  of the inner film layer  23  is arranged on an inner side of an outer edge  22   a  of the outer film layer  22 . In addition, the outer edge  22   a  of the outer film layer  22  and an outer edge  41   c  of an inner-bag forming sheet member  41  align with each other. 
     Then, in order from an outer edge of a sheet member container  100 , a four-layer sealing portion  191 , a six-layer sealing portion  192 , the non-sealing portion  111  and a main-body sealing portion  26  are arranged in this order. 
     In the four-layer sealing portion  191 , a portion of the outer film layer  22 , a portion of the inner-bag forming sheet member  41 , another portion of the inner-bag forming sheet member  41  and another portion of the outer film layer  22  are laminated in this order and attached to one another. 
     In the six-layer sealing portion  192 , a portion of the outer film layer  22 , a portion of the inner film layer  23 , a portion of the inner-bag forming sheet member  41 , another portion of the inner-bag forming sheet member  41 , another portion of the inner film layer  23  and another portion of the outer film layer  22  are laminated in this order and attached to one another. 
     In the case of this modification, a peripheral edge sealing portion  19  includes the four-layer sealing portion  191  and the six-layer sealing portion  192 . 
     Modification 3 
     Modification 3 illustrated in  FIG.  20    is different from Modification 2 illustrated in  FIG.  19    in that the sheet member container  100  does not include the non-sealing portion  111 , and in other points, this modification is similar to Modification 2. 
     Modification 4 
     Modification 4 illustrated in  FIG.  21    is different from Modification 3 illustrated in  FIG.  20    in that the non-sealing portion  111  is provided in place of the six-layer sealing portion  192 , and in other points, this modification is similar to Modification 3. In a case of this modification, the peripheral edge sealing portion  19  only includes the four-layer sealing portion  191 . 
     Modification 5 
     Modification 5 illustrated in  FIG.  22    is different from Modification 4 illustrated in  FIG.  21    in that the non-sealing portion  111  is not provided, and in other points, this modification is similar to Modification 4. 
     Second Exemplary Embodiment 
     Next, a second exemplary embodiment will be described with reference to  FIG.  13    to  FIG.  15   . 
     A sheet member container  100  according to this exemplary embodiment is different from the sheet member container  100  according to the above first exemplary embodiment in terms of points described below. In other points, the container is configured similarly to the sheet member container  100  according to the above first exemplary embodiment. 
     As illustrated in  FIG.  13    and  FIG.  14   , in a case of this exemplary embodiment, the sheet member container  100  does not include an inner bag  40 . Then, a container main body  20  constitutes a containing portion  17 . That is, in a peripheral edge sealing portion  19 , portions of an inner film layer  23  of a main-body forming sheet member  21  are attached to each other. Consequently, the container main body  20  is formed, and the containing portion  17  is constituted. 
     Also, in the case of this exemplary embodiment, in a boundary between a first surface portion (first main surface portion  20   a ) and a second surface portion (top gusset portion  14 ), an end portion of the peripheral edge sealing portion along a folding line is away from a boundary position between an interfacial connecting portion and a main-body sealing portion as illustrated in  FIG.  15   . 
     Consequently, as illustrated in  FIG.  14   , in the case of this exemplary embodiment, an end portion  19   a  of the peripheral edge sealing portion  19  is also away from an interfacial connecting portion  65 , and hence movement of an outer film layer  22  and the inner film layer  23  that constitute the interfacial connecting portion  65  is hard to be regulated. Thus, when a filling portion is filled with a filler in a folded state along the folding line, the filler can easily flow between a filling portion  60  of the first surface portion and the filling portion  60  of the second surface portion. For example, a first filling portion  61  to a fourth filling portion  64  can be favorably filled with a filler through the interfacial connecting portion  65 . 
     Third Exemplary Embodiment 
     Next, a third exemplary embodiment will be described with reference to  FIG.  16    and  FIG.  17   . 
     A sheet member container  100  according to this exemplary embodiment is different from the sheet member container  100  according to the above first exemplary embodiment in terms of points described below. In other points, the sheet member container  100  according to this exemplary embodiment is configured similarly to the sheet member container  100  according to the above first exemplary embodiment. 
     As illustrated in  FIG.  16   , in a case of this exemplary embodiment, a container forming sheet member  51  that constitutes the sheet member container  100  includes a first sheet portion  31  that forms a first main surface portion  20   a,  a second sheet portion  32  that forms a second main surface portion  20   b,  and a top-gusset forming sheet portion  39  that forms a top gusset portion  14 , but the member does not include a bottom-gusset forming sheet portion  38  (see  FIG.  10   ) that forms a bottom gusset portion  13 . In the case of this exemplary embodiment, a connecting portion  24   a  of a non-attached region  24  is arranged only in a boundary between the first sheet portion  31  and the second sheet portion  32 . 
     Consequently, as illustrated in  FIG.  17   , the sheet member container  100  according to this exemplary embodiment includes a configuration that does not include the bottom gusset portion  13  and in which the first main surface portion  20   a  of a body portion  11  is directly connected to the second main surface portion  20   b  (not shown in the drawings). Then, an interfacial connecting portion  65  is arranged in a boundary between the first main surface portion  20   a  and the second main surface portion  20   b,  and a first filling portion  61  in the first main surface portion  20   a  is connected to a second filling portion  62  in the second main surface portion  20   b  via the interfacial connecting portion  65 . 
     That is, in the case of this exemplary embodiment, a container main body  20  includes the body portion  11 . One main surface portion (first main surface portion  20   a ) of the body portion  11  is a first surface portion, and the other main surface portion (second main surface portion  20   b ) of the body portion  11  is a second surface portion. 
     More specifically, in the case of this exemplary embodiment, a filling portion  60  includes the first filling portion  61  formed along a peripheral edge portion of the one main surface portion (first main surface portion  20   a ), and the second filling portion  62  formed along a peripheral edge portion of the other main surface portion (second main surface portion  20   b ). The first filling portion  61  is connected to the second filling portion  62  via the interfacial connecting portion  65 . 
     Furthermore, a cap portion  70  is a screw cap that does not include a pump portion  72 , a support cylinder portion  74 , a head portion  73  or a nozzle portion  75  and that includes an opening/closing lid. 
     The sheet member container  100  may independently stand with a discharge port in a downward posture (inverted posture), or may be arranged with the body portion  11  lying on a mounting surface. 
     Also, in the case of this exemplary embodiment, in the boundary between the first surface portion (first main surface portion  20   a ) and the second surface portion (second main surface portion  20   b ), an end portion of a peripheral edge sealing portion along a folding line is away from a boundary position between the interfacial connecting portion  65  and a main-body sealing portion, and hence movement of an outer film layer  22  and an inner film layer  23  that constitute the interfacial connecting portion  65  is hard to be regulated. 
     Consequently, when a filling portion is filled with a filler in a folded state along the folding line, the first filling portion  61  to a fourth filling portion  64  can be favorably filled with the filler through the interfacial connecting portion  65 . 
     The present invention is not limited to the above-described exemplary embodiments. Various modes such as changes and modifications are also included as long as the object of the present invention is achieved. 
     Alternatively, various constituent components of the sheet member container  100  do not have to exist individually and independently. For example, it is allowed that a plurality of constituent components are formed as a member, a constituent component is formed of a plurality of members, a certain constituent component is part of another constituent component, or part of the certain constituent component overlaps with part of the other constituent component. 
     EXPLANATION OF REFERENCE CHARACTERS 
     
         
           11  body portion 
           13  bottom gusset portion 
           14  top gusset portion 
           15  spout member 
           15   a  outlet cylinder portion 
           15   b  plate shape portion 
           15   c  and  15   d  opening 
           17  containing portion 
           18  contents 
           19  peripheral edge sealing portion 
           191  four-layer sealing portion 
           192  six-layer sealing portion 
           19   a  end portion 
           20  container main body 
           20   a  first main surface portion 
           20   b  second main surface portion 
           21  main-body forming sheet member 
           22  outer film layer 
           22   a  outer edge 
           23  inner film layer 
           23   a  outer edge 
           24  non-attached region 
           26  main-body sealing portion 
           26   a  boundary position 
           28  main-body peripheral edge sealing portion 
           41  inner-bag forming sheet member  41   
           41   c  outer edge 
           51  container forming sheet member 
           60  filling portion 
           61  first filling portion 
           62  second filling portion 
           63  third filling portion 
           64  fourth filling portion 
           81 ,  82 ,  83 ,  84 ,  85 , and  86  folding line 
           91  attached portion 
           100  sheet member container 
           111  non-sealing portion