Sheet member container

A sheet member container having one or more sheet members including a main-body forming sheet member in which a plurality of film layers including an inner film layer and an outer film layer are stacked; a containing portion that accommodates contents; a container main body including the main-body forming sheet member, and surrounding the containing portion; and a peripheral edge sealing portion in which the one or more sheet members are folded along a folding line, and peripheral edge portions of the one or more sheet members are attached to each other.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application is a 35 U.S.C. § 371 national stage application of International patent application PCT/JP2020/011227, filed Mar. 13, 2020. The entire content of this application is incorporated herein by reference.

TECHNICAL FIELD

The present invention relates to a sheet member container.

BACKGROUND ART

A sheet member container that is a structure in which a plurality of films are laminated and a filler such as air is contained between layers of the films is described, for example, in Patent Document 1. The sheet member container includes a containing portion that accommodates contents, a container forming sheet member (described as an inner container forming sheet member in the document) that forms a container main body surrounding the containing portion, and a main-body forming sheet member (described as a container main-body forming sheet member in the document) in which a plurality of film layers are stacked, and the main-body forming sheet member includes a main-body sealing portion (described as an inner container sealing portion in the document) in which a plurality of film layers are attached to each other, and a non-attached region in which a plurality of film layers are partially not attached to each other. In the container, a filling portion is formed in which a filler is contained between layers of the plurality of film layers of the non-attached region.

CITATION LIST

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 in which a plurality of film layers including an inner film layer and an outer film layer are stacked, the sheet member container includes a containing portion that accommodates contents, and a container main body including the main-body forming sheet member, and surrounding the containing portion, wherein the main-body forming sheet member includes a main-body sealing portion that is an attached region of the inner film layer and the outer film layer, and a non-attached region in which the inner film layer and the outer film layer are partially not attached, and includes a filling portion in which a filler is contained between layers of the inner film layer and the outer film layer in the non-attached region, the sheet member container includes a peripheral edge sealing portion in which the one or plurality of sheet members are folded along a folding line, and peripheral edge portions of the one or plurality of sheet members are attached to each other, wherein the container main body is formed into a shape including a body portion, the peripheral edge sealing portion includes a side edge sealing portion extending along each of a pair of side edges of the body portion, and in a region of at least part of the side edge sealing portion in an extending direction, a second non-attached region in which film layers forming the sheet member container are not attached to each other is disposed between the side edge sealing portion and the main-body sealing portion.

DESCRIPTION OF EMBODIMENTS

According to investigation by the present inventors, there is still room for improvement in terms of texture at the time of gripping a sheet member container of Patent Document 1.

The present invention relates to a sheet member container with softer texture.

Below, examples of 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 toFIG.1toFIG.8. In addition,FIG.1,FIG.2andFIG.3illustrate a sheet member container100in a state where a filler is contained in a filling portion.

The sheet member container100according to this exemplary embodiment includes one or a plurality of sheet members including a main-body forming sheet member21in which a plurality of film layers including an inner film layer23and an outer film layer22are stacked.

The sheet member container100includes a containing portion17that accommodates contents18, and a container main body20that surrounds the containing portion17. The container main body20includes the main-body forming sheet member21.

The main-body forming sheet member21includes a main-body sealing portion26that is an attached region of the inner film layer23and the outer film layer22, and a non-attached region24in which the inner film layer23and the outer film layer22are partially not attached, and includes a filling portion70in which a filler is contained between layers of the inner film layer23and the outer film layer22in the non-attached region24. The sheet member container100includes a peripheral edge sealing portion60in which one or a plurality of sheet members are folded along folding lines101,102,103,104, and105(seeFIG.7andFIG.8), and in which peripheral edge portions of one or a plurality of sheet members are attached to each other.

The container main body20is formed into a shape including a body portion11. The peripheral edge sealing portion60includes a side edge sealing portion61extending along each of a pair of side edges of the body portion, and in a region of at least part of the side edge sealing portion61in its extending direction, a second non-attached region81in which film layers that form the sheet member container100are not attached to each other is disposed between the side edge sealing portion61and the main-body sealing portion26.

In a case of this exemplary embodiment, in the second non-attached region81, all the film layers that form the sheet member container100are not attached. Therefore, in the second non-attached region81, at least the outer film layer22and inner film layer23are not attached to each other.

According to this exemplary embodiment, since all the film layers that form the sheet member container100are not attached to each other in the second non-attached region81, the second non-attached region81is softer than the side edge sealing portion61and the main-body sealing portion26. That is, the sheet member container100includes a portion relatively softer than the side edge sealing portion61and the main-body sealing portion26, between the side edge sealing portion61and the main-body sealing portion26. Consequently, when a user grips the body portion11, a side edge portion12of the body portion11is easily bent along user's fingers and palm, and texture at the time of gripping the sheet member container100can be softened.

Additionally, in a case where strong impact is on the sheet member container100(due to falling or the like), when the side edge portion12has a favorable flexibility, it can be expected that the impact on the side edge sealing portion61is reduced. Consequently, it is possible to favorably maintain a state where peripheral edge portions of one or a plurality of sheet members are attached to each other in the side edge sealing portion61, and hence structural strength of the sheet member container100can be sufficiently acquired.

In the present invention, the mode of the sheet member container100is not specifically limited, and it may be possible to employ a mode in which the container can stand independently, or a mode in which the container does not stand independently and is expected to be mounted in a lying position. In the case of this exemplary embodiment, the sheet member container100includes a bottom portion13as a bottom portion, and is a freestanding container that can stand independently in a state where the bottom portion13is 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 container100is described in terms of a positional relationship in a state where the sheet member container100is caused to stand independently as illustrated inFIG.1andFIG.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 container100.

Furthermore, in connection with the positional relationship of each constituent component of the sheet member container100, the positional relationship illustrated in each of the drawings may be described.

A front surface side (side away from the viewer of a paper surface inFIG.1) of the sheet member container100is referred to as a forward direction; a back surface side (side of the viewer ofFIG.1) of the sheet member container100is referred to as a rearward direction; the left side (right side inFIG.1) as viewed from the front surface of the sheet member container100is referred to as a leftward direction; and the right side (left side inFIG.1) as viewed from the front surface of the sheet member container100is referred to as a rightward direction. Furthermore, the left-right direction of the sheet member container100may be referred to as a widthwise direction.

In the present invention, types of contents18are not specifically limited. The contents18include, for example, shampoo, conditioner, body soap, detergent, bleach, softener, beverage, and food, and include engine oil, chemical agent, and the like.

In addition, the contents18may 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 contents18are, for example, a liquid.

In a case where the contents18are a liquid, a viscosity of the contents18at, 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.

The filler contained in the filling portion70includes a fluid (gas or liquid), a solid (for example, a powder-granular material, resin pellets, or the like), or a semi-solid (for example, blowing agent or the like), and is preferably a gas such as air.

In the case of this exemplary embodiment, the container main body20is formed into a bag shape including the body portion11described above, a top portion14located on an upper side of the body portion11, and the bottom portion13located on a lower side of the body portion11. However, the present invention is not limited to this example, and the container main body20does not have to include the top portion14, or does not have to include the bottom portion13.

Also, the upper edge of the body portion11is formed into an arc shape projecting upward.

The container main body20surrounds the containing portion17(surrounds an inner bag40described later in the case of this exemplary embodiment). The container main body20forms a shell of the sheet member container100. Below, the body portion11, the top portion14and the bottom portion13of the container main body20may be referred to as the body portion11, the top portion14and the bottom portion13of the sheet member container100.

The sheet member container100further includes a cylindrical mouth neck portion protruding upward from the top portion14. The mouth neck portion may include an outlet cylinder portion15aof a spout member15described later.

As illustrated inFIG.1andFIG.2, the body portion11includes a first surface portion20a(front side panel) and a second surface portion20b(rear side panel), which are opposed to each other with the containing portion17being disposed therebetween. The first surface portion20ais located on the front surface side, and the second surface portion20bis located on the back surface side.

The planar shape of the top portion14is not specifically limited, but in the case of this exemplary embodiment, the top portion14is 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 portion14is formed into, for example, a horizontal tonsil shape.

The container main body20is formed by folding the main-body forming sheet member21(seeFIG.5andFIG.7) and attaching peripheral edge portions of the main-body forming sheet member21to each other (attaching the portions to each other via an inner-bag forming sheet member41in the case of this exemplary embodiment).

In the case of this exemplary embodiment, the sheet member container100further includes, for example, the inner bag40disposed inside of the container main body20.

The inner bag40is formed by attaching portions of a peripheral edge portion of the inner-bag forming sheet member41(seeFIG.6) to each other (seeFIG.7). That is, the inner-bag forming sheet member41is folded and the peripheral edge portions of the inner-bag forming sheet member41are attached to each other, to form the inner bag40having a bag shape. The inner bag40is covered with the container main body20. The inner bag40includes the containing portion17in the inner bag40.

However, in the present invention, in a case where an inner container defining the containing portion17is disposed inside of the container main body20, the inner container is not limited to the inner bag40including a sheet member, and may be formed, for example, through blow molding.

A shape of the inner bag40is not specifically limited. However, in the case of this exemplary embodiment, the inner bag40is formed into a shape similar to that of the container main body20.

The inner bag40includes a first main surface portion40alocated on the front surface side and a second main surface portion40blocated on the back surface side, with the containing portion17being disposed therebetween.

The sheet member container100includes, for example, the spout member15disposed to penetrate through the top portion14, and a cap portion90mounted (for example, detachably mounted) to the spout member15.

More specifically, for example, as illustrated inFIG.1, the spout member15includes the cylindrical outlet cylinder portion15athrough which the contents18are caused to pass, and a plate shape portion15bhaving a plate shape and disposed at one end (lower end) of the outlet cylinder portion15ain an axial direction to be perpendicular to this axial direction, the portions being provided in an integral manner. The outlet cylinder portion15ahas an outer peripheral surface in which a thread is formed, and the outlet cylinder portion15ahas an external screw shape. The plate shape portion15bis disposed, for example, on an inner surface or an external surface of a portion disposed along the top portion14in the inner-bag forming sheet member41.

The cap portion90includes an attachment portion91that is a cylindrical portion with the external screw shape removably screwed to the outlet cylinder portion15a, a pump portion92fixed to the attachment portion91, a dip tube97extending downward from the pump portion92, and a head portion93held by the pump portion92to be raised and lowered to the pump portion92.

The head portion93includes, for example, a support cylinder portion94protruding upward from the pump portion92, and a nozzle portion95protruding horizontally from an upper end portion of the head portion93, and a discharge port96through which the contents18are discharged is formed at a tip end of the nozzle portion95.

When the head portion93is pushed into the pump portion92(pushed downward), the pump portion92operates to discharge the contents18through the discharge port96.

As illustrated inFIG.5andFIG.7, the main-body forming sheet member21is formed by stacking and attaching, to each other, the outer film layer22that forms the external surface side of the container main body20and the inner film layer23that constitutes the inner surface side of the container main body20. That is, as one example, in the case of this exemplary embodiment, the main-body forming sheet member21includes two film layers including the outer film layer22and the inner film layer23. However, the present invention is not limited to this example. The main-body forming sheet member21may include a film layer other than the outer film layer22and the inner film layer23.

In the case of this exemplary embodiment, the outer film layer22and the inner film layer23are formed into the same shape as each other. However, the present invention is not limited to this example. The outer film layer22and the inner film layer23may have shapes different from each other. In a case where the shapes are different, it is preferable that the shape of the outer film layer22is larger than that of the inner film layer23.

In the outer film layer22and the inner film layer23, insert holes are formed into which the outlet cylinder portion15aof the spout member15is inserted.

As described above, in the main-body forming sheet member21, the non-attached region24in which the outer film layer22and the inner film layer23are partially not attached to each other is formed.

FIG.5illustrates a region in which the outer film layer22and the inner film layer23are attached to each other to form the main-body sealing portion26, with hatching rising to the right for convenience.

FIG.1,FIG.2,FIG.3,FIG.6,FIG.7andFIG.8illustrate a region in which the outer film layer22and the inner film layer23are attached to each other to define the non-attached region24, that is, a region in which the main-body sealing portion26is formed, with hatching rising to the right for convenience.

Further,FIG.6illustrates, with an alternate long and two short dashes line, a seal boundary line21cthat is a boundary line between the seal region of the peripheral edge portion of the main-body forming sheet member21and another region. In the case of this exemplary embodiment, the outer film layer22and the inner film layer23are attached to each other and the inner film layer23and the inner-bag forming sheet member41are attached to each other, in a region outside of the seal boundary line21cof the main-body forming sheet member21when a bag is formed.

As for a method of attaching the outer film layer22and the inner film layer23together, heat sealing, ultrasonic sealing, attaching with adhesive or the like may be used as an example.

For example, a non-attaching treatment is partially applied to a surface of one or both of the outer film layer22and the inner film layer23, this surface facing a surface of the other one. 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 layer22and the inner film layer23from 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 in which the non-attaching treatment is applied is to be the non-attached region24.

In the non-attached region24and the second non-attached region81, a filler is put into the non-attached region24to form the filling portion70in which the filler is contained.

In the present invention, a non-attached region other than the non-attached region24and the second non-attached region81may exist, and in the other non-attached region, the filler may not be contained, or the filler may be contained at a pressure lower than that of the non-attached region24.

In the case of this exemplary embodiment, as illustrated inFIG.1toFIG.3, the filling portion70includes, for example, a first body-portion filling portion71formed into a circular shape along a peripheral edge portion of the first surface portion20a, a second body-portion filling portion72formed into a circular shape along a peripheral edge portion of the second surface portion20b, a bottom-portion filling portion73formed into a circular shape along a peripheral edge portion of the bottom portion13, and a top-portion filling portion74formed into a circular shape around the outlet cylinder portion15ain the top portion14.

A lower edge of the first body-portion filling portion71is connected to a front edge of the bottom-portion filling portion73, and a lower edge of the second body-portion filling portion72is connected to a rear edge of the bottom-portion filling portion73. A central portion of an upper end portion of the first body-portion filling portion71in the widthwise direction is connected to a central portion of a front-end portion of the top-portion filling portion74in the widthwise direction.

The sheet member container100includes the filling portion70with such a structure, and accordingly, structural strength is sufficiently achieved substantially over the whole container main body20.

In the case of this exemplary embodiment, the whole filling portion70is formed in an integrated manner. Here, a connecting portion67between the first body-portion filling portion71and the top-portion filling portion74is narrowed. That is, a connecting portion24a(seeFIG.7) that is a portion forming the connecting portion67in the non-attached region24is narrowed.

In addition, in the present invention, the sheet member container100may include a plurality of filling portions70that are independent of each other.

Alternatively, the filling portion70does not necessarily have to be formed in the whole non-attached region24, and may be formed in some of a plurality of non-attached regions24.

In the case of this exemplary embodiment, each of the outer film layer22and the inner film layer23has a layer structure including a plurality of resin layers. Also, the inner-bag forming sheet member41has a layer structure including a plurality of resin layers.

The main-body forming sheet member21preferably includes the resin layer of at least one type of polyethylene, polypropylene, polyester, and polyamide.

A material of the resin layer that forms the outer film layer22and the inner film layer23of the main-body forming sheet member21is not specifically limited. For example, the material is 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); and 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 layer22has a four-layer structure formed by stacking 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 forms an external surface of the container main body20. 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 body20with a feeling of gloss and printability, and to provide the container main body20with 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 body20with 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 body20with 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 layer23.

An example of the layer structure of the inner film layer23is 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 layer22including the first layer to the fourth layer. The fifth layer is adjacent to the first layer, and forms a surface opposite to the fourth layer in the inner film layer23. The main function of the fifth layer is to achieve a heat seal property with the outer film layer22.

The main function of the fourth layer of the inner film layer23is to achieve a heat seal property with the inner-bag forming sheet member41.

However, the layer structure of the outer film layer22and the inner film layer23is not limited to the above example, and the material of each of the layers that form the outer film layer22and the inner film layer23is not limited to the examples described above.

As one example, the inner-bag forming sheet member41that constitutes the inner bag40has a three-layer structure constituted by stacking 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 layer23) with the main-body forming sheet member21.

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 of the inner-bag forming sheet member41.

In addition, the layer structure of the inner-bag forming sheet member41is not limited to the structure that has been described here.

As illustrated inFIG.6, the inner-bag forming sheet member41is stacked to the main-body forming sheet member21, and as illustrated inFIG.7, a peripheral edge portion of the inner film layer23and a peripheral edge portion of the inner-bag forming sheet member41are attached to each other, and a peripheral edge portion of the outer film layer22and the peripheral edge portion of the inner film layer23are attached to each other. Consequently, the main-body forming sheet member21and the inner-bag forming sheet member41constitute a container forming sheet member51.

A sealing portion of a peripheral edge portion of the container forming sheet member51is referred to as a peripheral edge sealing portion52. The peripheral edge sealing portion52includes a sealing portion (below, an inner-outer sealing portion43) between the peripheral edge portion of the inner film layer23and the peripheral edge portion of the inner-bag forming sheet member41, and a sealing portion (below, a main-body peripheral edge sealing portion28) between the peripheral edge portion of the outer film layer22and the peripheral edge portion of the inner film layer23.

FIG.7illustrates a region in which the peripheral edge sealing portion52is formed, with hatching rising to the left. Also, inFIG.7, hatching rising to the left and hatching rising to the right are overlapped in a region where the region in which the peripheral edge sealing portion52is formed overlaps with a region in which the main-body sealing portion26is formed.

As for a method of forming the peripheral edge sealing portion52, heat sealing, ultrasonic sealing, attaching with adhesive or the like may be used as an example.

As illustrated inFIG.7, the main-body forming sheet member21includes, for example: a first sheet portion31that is a portion constituting the first surface portion20a; a second sheet portion32that is a portion constituting the second surface portion20b; a bottom-portion forming sheet portion38that is a portion constituting the bottom portion13; a top-portion forming sheet portion39that is a portion constituting the top portion14; and an extending portion25having a rectangular shape in plane view. For example, the extending portion25extends outward from the second sheet portion32.

An insert hole21ainto which the outlet cylinder portion15aof the spout member15is inserted is formed in the top-portion forming sheet portion39.

In the case of this exemplary embodiment, the inner-bag forming sheet member41is formed into the same shape as in a portion of the main-body forming sheet member21excluding the extending portion25.

In addition,FIG.6illustrates a seal boundary line41aof the inner-bag forming sheet member41, with a dashed line for convenience. The seal boundary line41ais a boundary line between a region in which the inner-bag forming sheet member41is attached (sealed) to the main-body forming sheet member21and another region in the inner-bag forming sheet member41, and is a boundary line between a region in which portions of the inner-bag forming sheet member41are attached to each other and the other region in the inner-bag forming sheet member41when the sheet member container100is formed (formed into the bag) by using the container forming sheet member51.

In the case of this exemplary embodiment, a position of the seal boundary line41aand a position of the seal boundary line21ccorrespond to each other (overlap with each other).

An insert hole41binto which the outlet cylinder portion15aof the spout member15is inserted is formed in a portion of the inner-bag forming sheet member41that overlaps with the top-portion forming sheet portion39.

The plate shape portion15bof the spout member15is attached to, for example, an inner surface of a portion of the inner-bag forming sheet member41that overlaps with the top-portion forming sheet portion39, and a peripheral edge of the insert hole41bforms the peripheral edge sealing portion52to which the inner-bag forming sheet member41, the main-body forming sheet member21and the plate shape portion15bare attached. The outlet cylinder portion15ais caused to pass through the insert hole41bof the inner-bag forming sheet member41and the insert hole21aof the top-portion forming sheet portion39, and protrudes toward the external surface side of these sheets.

Peripheral edge portions of the container forming sheet member51(the inner-bag forming sheet member41) are attached to each other in a state where the folding line101, the folding line102, and the folding line104illustrated inFIG.7are folded as valley fold, and the folding line103and the folding line105are folded as mountain fold. With this operation, the container forming sheet member51is formed into a bag shape with a double structure (seeFIG.8).

That is, edge portions of the inner-bag forming sheet member41are attached to each other to form an inner-bag sealing portion42(seeFIG.4AandFIG.6). Thus, using the inner-bag forming sheet member41, the inner bag40is formed. In addition, the bag-shaped container main body20(seeFIG.8) that covers the inner bag40is formed.

As for a method of attaching portions of the inner-bag forming sheet member41to 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 portion28, the inner-bag sealing portion42and the inner-outer sealing portion43are arranged at positions that correspond to one another (positions that overlap with one another). The main-body peripheral edge sealing portion28, the inner-bag sealing portion42and the inner-outer sealing portion43are generically referred to as the peripheral edge sealing portion60(the peripheral edge sealing portion60includes the main-body peripheral edge sealing portion28, the inner-bag sealing portion42and the inner-outer sealing portion43). That is, a sealing portion of a peripheral edge portion of the sheet member container100formed into the bag is referred to as the peripheral edge sealing portion60(seeFIG.8).

FIG.8illustrates a region in which the peripheral edge sealing portion60is formed, with hatching rising to the left. Also, inFIG.8, hatching rising to the left and hatching rising to the right are overlapped in a region where the region in which the peripheral edge sealing portion60is formed overlaps with the region in which the main-body sealing portion26is formed. Further,FIG.1andFIG.2also illustrate the region in which the peripheral edge sealing portion60is formed, with hatching rising to the left.

A portion of the first sheet portion31on a top-portion forming sheet portion39side of the folding line105is a first overlapping portion31a. The first overlapping portion31ais disposed to overlap with one half portion in the top-portion forming sheet portion39in a state before the filler is contained in the non-attached region24.

A portion of the second sheet portion32that is located away from the bottom-portion forming sheet portion38via a folding line106is a second overlapping portion32a. The second overlapping portion32ais disposed to overlap with the other half portion in the top-portion forming sheet portion39in the state before the filler is contained in the non-attached region24.

As illustrated inFIG.8, the container forming sheet member51is formed into a double bag shape, to obtain a container. In the container, for example, the filler is inputted from an inlet port25cformed in the extending portion25into the non-attached region24. Afterward, the non-attached region24is sealed at a portion continuously connected to a base end side of the extending portion25. This causes the filler to be contained in the non-attached region24(the filling portion70).

In addition, a pressure within the filling portion70is 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 layer22and the inner film layer23, and capable of holding sealability when the filler is contained 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 portion70in which the filler is contained, the extending portion25is cut off, for example.

In this manner, the sheet member container100in which the filler is contained is obtained (seeFIG.1andFIG.2). Alternatively, the extending portion25may remain even in a state of the sheet member container100in which the filler is contained.

After the sheet member container100is manufactured, the contents18are inputted through the outlet cylinder portion15aof the spout member15into the containing portion17. Afterward, the cap portion90is mounted to the spout member15. This makes it possible to obtain the sheet member container100in which the contents18are contained in the containing portion17.

In the case of this exemplary embodiment, as illustrated inFIG.1toFIG.3, the peripheral edge sealing portion60includes, for example, a top-portion peripheral edge sealing portion62disposed along a peripheral edge of the top portion14, the side edge sealing portion61extending along a side edge of the body portion11in an up-down direction, and a bottom-portion peripheral edge sealing portion63disposed along a peripheral edge of the bottom portion13.

The top-portion peripheral edge sealing portion62includes a first-surface-portion-side top-portion peripheral edge sealing portion62adisposed along a boundary between the top portion14and the first surface portion20a, and a second-surface-portion-side top-portion peripheral edge sealing portion62bdisposed along a boundary between the top portion14and the second surface portion20b.

The side edge sealing portion61includes a side edge sealing portion61adisposed along a right-side edge of the body portion11, and a side edge sealing portion61bdisposed along a left-side edge of the body portion11.

The bottom-portion peripheral edge sealing portion63includes a bottom-portion peripheral edge sealing portion63adisposed along a right-side edge of the bottom portion13, and a bottom-portion peripheral edge sealing portion63bdisposed along a left-side edge of the bottom-portion peripheral edge sealing portion63.

An upper end of the right-side edge sealing portion61ais connected to a right end portion of the top-portion peripheral edge sealing portion62, and an upper end of the left-side edge sealing portion61bis connected to a left end portion of the top-portion peripheral edge sealing portion62. A lower end of the right-side edge sealing portion61ais connected to a central portion of the right bottom-portion peripheral edge sealing portion63ain a front-rear direction, and a lower end of the left-side edge sealing portion61bis connected to a central portion of the left bottom-portion peripheral edge sealing portion63bin the front-rear direction.

Each of the side edge sealing portions61aand61bis constituted, for example, by attaching a side edge portion of the first sheet portion31and a side edge portion of the second sheet portion32to each other (via the inner-bag forming sheet member41). The first-surface-portion-side top-portion peripheral edge sealing portion62ais constituted by attaching the half portion of the top-portion forming sheet portion39on a first sheet portion31side and an upper end portion of the first sheet portion31to each other (via the inner-bag forming sheet member41). The second-surface-portion-side top-portion peripheral edge sealing portion62bis constituted by attaching the half portion of the top-portion forming sheet portion39on a second sheet portion32side and an upper end portion of the second sheet portion32to each other (with the inner-bag forming sheet member41being interposed therebetween).

Also, a half portion of a right-side edge portion of the bottom-portion forming sheet portion38on the first sheet portion31side and a lower end portion of a right-side edge portion of the first sheet portion31are attached to each other (via the inner-bag forming sheet member41) to constitute a front lower sheet piece75a, and a half portion of the right-side edge portion of the bottom-portion forming sheet portion38on the second sheet portion32side and a lower end portion of a right-side edge portion of the second sheet portion32are attached to each other (via the inner-bag forming sheet member41) to constitute a rear lower sheet piece75b. Then, the front lower sheet piece75aand the rear lower sheet piece75bare partially attached to each other, to constitute an integrated skirt portion75in the container main body20.

Similarly, a half portion of a left-side edge portion of the bottom-portion forming sheet portion38on the first sheet portion31side and a lower end portion of a left-side edge portion of the first sheet portion31are attached to each other (via the inner-bag forming sheet member41) to constitute a front lower sheet piece75a, and a half portion of the left-side edge portion of the bottom-portion forming sheet portion38on the second sheet portion32side and a lower end portion of a left-side edge portion of the second sheet portion32are attached to each other (via the inner-bag forming sheet member41) to constitute a rear lower sheet piece75b. Then, the front lower sheet piece75aand the rear lower sheet piece75bare attached to each other, to constitute an integrated skirt portion75. Each of left and right skirt portions75is the bottom-portion peripheral edge sealing portion63.

The bottom-portion peripheral edge sealing portion63(the skirt portion75) is formed in a substantially isosceles triangular shape with a vertex shared by two equal sides being disposed on the upper side, for example, in side view. An upper end (the above vertex) of the bottom-portion peripheral edge sealing portion63(the skirt portion75) is connected to a lower end of the side edge sealing portion61(seeFIG.2).

In the case of this exemplary embodiment, as an example, one or a plurality of sheet members are attached to each other in an entire region on an inner side of an external line of the bottom-portion peripheral edge sealing portion63(the above-described substantially isosceles triangular shape).

Alternatively, a portion in which peripheral edge portions of the one or plurality of sheet members are not attached to each other may be formed in a region on the inner side of the external line of the bottom-portion peripheral edge sealing portion63. More specifically, the bottom-portion peripheral edge sealing portion63may include, for example, a first portion extending vertically downward from the lower end of the side edge sealing portion61, and a second portion and a third portion each extending from the lower end of the side edge sealing portion61along each of two equal sides (oblique sides) of the above-described substantially isosceles triangular shape. In the skirt portion75, the peripheral edge portions of the one or plurality of sheet members are not attached to each other in a region disposed between the first portion and the second portion and a region disposed between the first portion and the third portion.

In this manner, a portion where the outer film layer22and the inner film layer23are not attached to each other in the region on the inner side of the external line of the bottom-portion peripheral edge sealing portion63can be an escape place of air trapped when the bottom-portion peripheral edge sealing portion63is formed.

In the case of this exemplary embodiment, the bottom portion13includes a bottom surface of the container main body20, the skirt portion75, and a portion covered with the skirt portion75.

In the case of this exemplary embodiment, for example, the film layer constituting the main-body forming sheet member21and the inner-bag forming sheet member41are not attached in the second non-attached region81.

Preferably, the film layers that form the sheet member container100are all not attached in the second non-attached region81. Consequently, the side edge portion12of the body portion11has a structure with a favorable flexibility, and hence texture of the side edge portion12softens.

More specifically, as illustrated inFIG.4AandFIG.4B, the outer film layer22and the inner film layer23are not attached and the inner film layer23and the inner-bag forming sheet member41are not attached in the second non-attached region81. That is, in the second non-attached region81, a portion of the outer film layer22, a portion of the inner film layer23, a portion of the inner-bag forming sheet member41, another portion of the inner-bag forming sheet member41, another portion of the inner film layer23and another portion of the outer film layer22are not attached to each other, and are stacked in this order.

In the peripheral edge sealing portion60, film layers adjacent to each other in the film layers forming the sheet member container100are all attached to each other. This can maintain the sheet member container100in a desired shape.

More specifically, in the peripheral edge sealing portion60, the outer film layer22and the inner film layer23are attached to each other, and the inner film layer23and the inner-bag forming sheet member41are attached to each other. That is, in the peripheral edge sealing portion60, a portion of the outer film layer22, a portion of the inner film layer23, a portion of the inner-bag forming sheet member41, another portion of the inner-bag forming sheet member41, another portion of the inner film layer23and another portion of the outer film layer22are stacked in this order and are attached to each other.

As illustrated inFIG.6, the main-body sealing portion26is disposed on an inner side of the peripheral edge sealing portion60, excluding after-mentioned portions that are seal continuity portions64a,64band64c.

In the case of this exemplary embodiment, the main-body sealing portion26includes, for example, an outer peripheral side main-body sealing portion26aformed in a circular shape along the peripheral edge portion of the main-body forming sheet member, and a plurality of (for example, four) inner peripheral side main-body sealing portions26barranged on an inner side of the outer peripheral side main-body sealing portion26a.

The outer peripheral side main-body sealing portion26is formed, for example, in a series over the first sheet portion31, the second sheet portion32, the bottom-portion forming sheet portion38, and the top-portion forming sheet portion39.

More specifically, as illustrated inFIG.7, a portion of the outer peripheral side main-body sealing portion26athat is formed in the top-portion forming sheet portion39is disposed along the top-portion peripheral edge sealing portion62. Respective portions of the outer peripheral side main-body sealing portion26athat are formed in the first sheet portion31and the second sheet portion32are arranged along the side edge sealing portion61. A portion of the outer peripheral side main-body sealing portion26athat is formed in the bottom-portion forming sheet portion38is disposed along the bottom-portion peripheral edge sealing portion63.

The inner peripheral side main-body sealing portions26bare formed, for example, in the first sheet portion31, the second sheet portion32, the bottom-portion forming sheet portion38, and the top-portion forming sheet portion39, respectively.

The outer peripheral side main-body sealing portion26ais formed, for example, into an annular shape. Each inner peripheral side main-body sealing portion26bis formed, for example, into an annular shape.

The non-attached region24(filling portion70) is a closed region defined by the outer peripheral side main-body sealing portion26aand a plurality of inner peripheral side main-body sealing portions26b, in a state where the filler is contained.

The second non-attached region81is a closed region defined by the outer peripheral side main-body sealing portion26aand the peripheral edge sealing portion60.

In the case of this exemplary embodiment, for example, the second non-attached region81is disposed between the side edge sealing portion61and the main-body sealing portion26in each of a pair of side edge portions12of the body portion11.

Consequently, each of the pair of side edge portions12of the body portion11has the structure with the favorable flexibility, and hence texture when the user grips the sheet member container100can be softer.

More specifically, the second non-attached region81is disposed between the side edge sealing portion61aand a right-side edge of the outer peripheral side main-body sealing portion26a, and the second non-attached region81is also disposed between the side edge sealing portion61band a left-side edge of the main-body sealing portion26.

Also, in the case of this exemplary embodiment, as illustrated inFIG.2, the second non-attached region81is disposed between the side edge sealing portion61and the main-body sealing portion26in each of the first surface portion20aand the second surface portion20b.

Consequently, even when the user grips the sheet member container100from one of the front surface side (a first surface portion20aside) and the back surface side (a second surface portion20bside) of the container, a portion in the side edge portion12that corresponds to the second non-attached region81naturally touches the user's fingers and palm.

More specifically, the second non-attached region81is disposed between the side edge sealing portion61and the outer peripheral side main-body sealing portion26aon the first surface portion20aside, and the second non-attached region81is also disposed between the side edge sealing portion61and the outer peripheral side main-body sealing portion26aon the second surface portion20bside.

In the case of this exemplary embodiment, for example, a plurality of second non-attached regions81arranged away from each other in the direction in which the side edge sealing portion61extends are formed in the body portion11. More specifically, the plurality of second non-attached regions81are, for example, arranged away from each other in the up-down direction in the body portion11.

Consequently, the side edge portion12of the body portion11partially has the structure with the favorable flexibility, and hence the texture of the side edge portion12can be softened.

More specifically, for example, the seal continuity portion64ain which the side edge sealing portion61is connected to the main-body sealing portion26is disposed above a central position of the body portion11in a height direction. The seal continuity portion64aincludes a mode in which the side edge sealing portion61and the main-body sealing portion26are connected in an overlapped state, and a mode in which the side edge sealing portion61and the main-body sealing portion26are connected (adjacent) without overlapping. Then, the second non-attached regions81are arranged on an upper side and a lower side of the seal continuity portion64a, respectively. Consequently, the sheet member container100has a structure with a relatively soft portion in a portion of the side edge portion12and a relatively hard portion in another portion of the side edge portion12. Therefore, it is possible to sufficiently achieve the structural strength of the sheet member container100and make the favorable texture of the side edge portion12improved.

More specifically, the second non-attached region81includes a second non-attached region81a(below, the upper second non-attached region81a) disposed on the upper side of the seal continuity portion64aas a basis, and a second non-attached region81bdisposed on the lower side thereof (below, the lower second non-attached region81b). A lower end of the upper second non-attached region81ais connected to an upper end of the seal continuity portion64a, and an upper end of the lower second non-attached region81bis connected to a lower end of the seal continuity portion64a. In other words, the upper second non-attached region81ais separated from the lower second non-attached region81bby the seal continuity portion64ain the up-down direction.

In the seal continuity portion64a, film layers disposed adjacent to each other in a thickness direction in the film layers forming the sheet member container100are all attached. That is, in the seal continuity portion64a, a portion of the outer film layer22, a portion of the inner film layer23, a portion of the inner-bag forming sheet member41, another portion of the inner-bag forming sheet member41, another portion of the inner film layer23and another portion of the outer film layer22are stacked in this order and attached to each other.

As illustrated inFIG.2, for example, the second non-attached region81(for example, the upper second non-attached region81a) extends continuously over from a position above a top-portion-side intersection point65between an upper end of the side edge sealing portion61and the top-portion peripheral edge sealing portion62to a position below the top-portion-side intersection point65. In other words, the second non-attached region81extends across the top-portion-side intersection point65in the up-down direction. Consequently, the sheet member container100has a structure with a relatively soft portion around a portion where the top-portion peripheral edge sealing portion62intersects the side edge sealing portion61. Therefore, the texture of the sheet member container100can be softer.

More specifically, in the case of this exemplary embodiment, the top-portion-side intersection point65includes a top-portion-side intersection point65abetween the upper end of the side edge sealing portion61aand the right end portion of the top-portion peripheral edge sealing portion62, and a top-portion-side intersection point (not shown in the drawing) between the upper end of the side edge sealing portion61band the left end portion of the top-portion peripheral edge sealing portion62.

The right top-portion-side intersection point65ais an intersection point among a right end of the first-surface-portion-side top-portion peripheral edge sealing portion62a, a right end of the second-surface-portion-side top-portion peripheral edge sealing portion62b, and the upper end of the side edge sealing portion61a.

The left top-portion-side intersection point is an intersection point among a left end of the first-surface-portion-side top-portion peripheral edge sealing portion62a, a left end of the second-surface-portion-side top-portion peripheral edge sealing portion62b, and the upper end of the side edge sealing portion61b.

Here, it is preferable that a width of the second non-attached region81(for example, the upper second non-attached region81a) is largest at a position of the top-portion-side intersection point65in the height direction. In this exemplary embodiment, the width is a length of the sheet member container100in a horizontal direction in a state where the bottom portion13of the container is mounted on a horizontal plane.

Consequently, the sheet member container100has the structure with the relatively softer portion around the portion where the top-portion peripheral edge sealing portion62intersects the side edge sealing portion61. Therefore, the texture of the sheet member container100can be further soft.

As illustrated inFIG.2, it is preferable that the width of the second non-attached region81is largest at the position of the top-portion-side intersection point65in the height direction in the state where the filler is contained in the filling portion70in side view. Also, it is preferable that the width of the second non-attached region81is largest at the position of the top-portion-side intersection point65in the height direction in front view. More preferably, the width of the second non-attached region81is largest at the position of the top-portion-side intersection point65in the height direction in both of side view and front view.

Further, as illustrated inFIG.2, the second non-attached region81(the lower second non-attached region81b) extends continuously over from a position above a bottom-portion-side intersection point66that is an intersection point between a lower end of the side edge sealing portion61and the bottom-portion peripheral edge sealing portion63to a position below the bottom-portion-side intersection point66. In other words, the second non-attached region81extends across the bottom-portion-side intersection point66in the up-down direction. Consequently, the sheet member container100has the structure with the relatively soft portion around a portion where the bottom-portion peripheral edge sealing portion63intersects the side edge sealing portion61. Therefore, the texture of the sheet member container100can be softer.

More specifically, in the case of this exemplary embodiment, the bottom-portion-side intersection point66includes a bottom-portion-side intersection point66abetween the lower end of the side edge sealing portion61aand a right end portion of the bottom-portion peripheral edge sealing portion63, and a bottom-portion-side intersection point (not shown in the drawing) between the lower end of the side edge sealing portion61band a left end portion of the bottom-portion peripheral edge sealing portion63.

The right bottom-portion-side intersection point66ais an intersection point between the central portion of the bottom-portion peripheral edge sealing portion63ain the front-rear direction and the lower end of the side edge sealing portion61a.

The left bottom-portion-side intersection point is an intersection point between the central portion of the bottom-portion peripheral edge sealing portion63bin the front-rear direction and the upper end of the side edge sealing portion61b.

Also, it is preferable that the width of the second non-attached region81(for example, the lower second non-attached region81b) is largest at a position of the bottom-portion-side intersection point66in the height direction.

Consequently, the sheet member container100has the structure with the relatively softer portion around a portion where the bottom-portion peripheral edge sealing portion63intersects the side edge sealing portion61. Therefore, the texture of the sheet member container100can be further soft.

As illustrated inFIG.2, it is preferable that the width of the second non-attached region81is largest at the position of the bottom-portion-side intersection point66in the height direction in the state where the filler is contained in the filling portion70in side view. Also, it is preferable that the width of the second non-attached region81is largest at the position of the bottom-portion-side intersection point66in the height direction in front view. More preferably, the width of the second non-attached region81is largest at the position of the bottom-portion-side intersection point66in the height direction in both of side view and front view.

Therefore, on the basis of the top-portion-side intersection point65, a lower part of the upper second non-attached region81ais defined by a portion of the side edge sealing portion61and a portion of the outer peripheral side main-body sealing portion26a, and an upper part of the upper second non-attached region81ais defined by a portion of the top-portion peripheral edge sealing portion62and a portion of the outer peripheral side main-body sealing portion26a.

On the basis of the bottom-portion-side intersection point66, an upper part of the lower second non-attached region81bis defined by a portion of the side edge sealing portion61and a portion of the outer peripheral side main-body sealing portion26a. Additionally, the lower part of the lower second non-attached region81bis defined by a portion of the bottom-portion peripheral edge sealing portion63and a portion of the outer peripheral side main-body sealing portion26a.

In the case of this exemplary embodiment, as described above, the second non-attached region81includes the upper second non-attached region81aand the lower second non-attached region81b. In this case, in the height direction, the width of the upper second non-attached region81aat the position of the top-portion-side intersection point65may be equal to the width of the lower second non-attached region81bat the position of the bottom-portion-side intersection point66, and one of the widths may be larger than the other width.

Also, the sheet member container100further includes, for example, the seal continuity portion64bdisposed in a central portion of an upper end portion of the body portion11in a lateral direction, and the seal continuity portions64carranged at a right end and a left end of a lower end portion of the body portion11, respectively.

The seal continuity portion64bis, for example, formed in the upper end portion of the body portion11on each of the first surface portion20aside and the second surface portion20bside. The seal continuity portion64cis, for example, formed in the lower end portion of the body portion11on each of the first surface portion20aside and the second surface portion20bside.

The seal continuity portion64bis, for example, formed as illustrated inFIG.1so that a central portion of the top-portion peripheral edge sealing portion62in the lateral direction is connected to a portion of the corresponding outer peripheral side main-body sealing portion26a. In addition, the connecting portion24adescribed above is formed in a central portion of the seal continuity portion64bformed on the first surface portion20aside in the lateral direction, and in the central portion, the outer film layer22and the inner film layer23are not attached to each other.

For example, as illustrated inFIG.2, the seal continuity portion64cis formed in the body portion11on the first surface portion20aside so that a front end of the bottom-portion peripheral edge sealing portion63is connected to a portion of the corresponding main-body sealing portion26. The seal continuity portion64cis, for example, formed in the body portion11on the second surface portion20bside so that a rear end of the bottom-portion peripheral edge sealing portion63is connected to a portion of the corresponding main-body sealing portion26.

The second non-attached region81(upper second non-attached region81a) on the upper side of the seal continuity portion64aincludes, for example, a portion with a width gradually decreasing toward the seal continuity portion64a. More specifically, a separation distance between a portion of the side edge sealing portion61that defines the upper second non-attached region81aand a portion of the outer peripheral side main-body sealing portion26athat defines the upper second non-attached region81agradually decreases toward downside (the seal continuity portion64a). Consequently, even if there is an impact on the sheet member container100due to the falling or the like, the impact on the seal continuity portion64acan be reduced. It is therefore possible to favorably maintain a state where the film layers adjacent to each other or the resin layers forming the respective film layers are attached to each other in the seal continuity portion64a.

Also, the upper second non-attached region81aincludes, for example, a portion with a width gradually decreasing toward the seal continuity portion64b. More specifically, a separation distance between a portion of the top-portion peripheral edge sealing portion62that defines the upper second non-attached region81aand a portion of the outer peripheral side main-body sealing portion26athat defines the upper second non-attached region81agradually decreases toward upside (the seal continuity portion64b). Consequently, even if there is an impact on the sheet member container100(due to the falling or the like), the impact on the seal continuity portion64bcan be reduced.

The second non-attached region81has a width gradually decreasing from the position of the top-portion-side intersection point65toward the seal continuity portion64a. More specifically, the width of the upper second non-attached region81agradually decreases from the position of the top-portion-side intersection point65toward the seal continuity portion64a.

Consequently, even if there is an impact on the sheet member container100(due to the falling or the like), the impact on the seal continuity portion64acan be more reduced. It is therefore possible to further favorably maintain the state where the film layers adjacent to each other or the resin layers forming the respective film layers are attached to each other.

Also, the second non-attached region81has, for example, a width gradually decreasing from the position of the top-portion-side intersection point65toward the upside. More specifically, the width gradually decreases from the position of the top-portion-side intersection point65toward the seal continuity portion64b.

Consequently, even if there is an impact on the sheet member container100(due to the falling or the like), the impact on the seal continuity portion64bcan be more reduced. It is therefore possible to further favorably maintain the state where the film layers adjacent to each other or the resin layers forming the respective film layers are attached to each other.

Similarly, the second non-attached region81(lower second non-attached region81b) on the lower side of the seal continuity portion64aincludes, for example, a portion with a width gradually decreasing toward the seal continuity portion64a. More specifically, a separation distance between a portion of the side edge sealing portion61that defines the lower second non-attached region81band a portion of the outer peripheral side main-body sealing portion26athat defines the lower second non-attached region81bgradually decreases toward upside (the seal continuity portion64a). Consequently, even if there is an impact on the sheet member container100(due to the falling or the like), the impact on the seal continuity portion64acan be reduced. It is therefore possible to favorably maintain the state where the film layers adjacent to each other or the resin layers forming the respective film layers are attached to each other in the seal continuity portion64a.

The second non-attached region81has a width gradually decreasing from the position of the bottom-portion-side intersection point66toward the seal continuity portion64a. More specifically, the width of the lower second non-attached region81bgradually decreases from the position of the bottom-portion-side intersection point66toward the seal continuity portion64a.

Consequently, even when if there is an impact on the sheet member container100(due to the falling or the like), the impact on the seal continuity portion64acan be more reduced. It is therefore possible to further favorably maintain the state where the film layers adjacent to each other or the resin layers forming the respective film layers are attached to each other.

Also, the second non-attached region81has, for example, a width gradually decreasing from the position of the bottom-portion-side intersection point66toward the downside. More specifically, the width of the lower second non-attached region81bgradually decreases from the position of the bottom-portion-side intersection point66toward the seal continuity portion64c.

Consequently, even if there is an impact on the sheet member container100(due to the falling or the like), the impact on the seal continuity portion64ccan be more reduced. It is therefore possible to further favorably maintain the state where the film layers adjacent to each other or the resin layers forming the respective film layers are attached to each other.

Here, in the case of this exemplary embodiment, for example, the body portion11is formed into a wide-based shape in the state where the filler is contained in the filling portion70. More specifically, a width size of the body portion11gradually slightly increases toward downside. Also, as illustrated inFIG.2, a width size of the body portion11in the front-rear direction also gradually slightly increases toward the downside.

Then, a width size of at least a portion of the lower second non-attached region81bon the lower side of the seal continuity portion64agradually increases toward the downside. More specifically, the lower second non-attached region81bincludes a portion defined by the side edge sealing portion61and the outer peripheral side main-body sealing portion26a, and a portion defined by the bottom-portion peripheral edge sealing portion63and the outer peripheral side main-body sealing portion26a. A width size of the portion of the lower second non-attached region81bthat is defined by the side edge sealing portion61and the outer peripheral side main-body sealing portion26agradually increases toward the upper end of the bottom-portion peripheral edge sealing portion63. In other words, a region in which the lower second non-attached region81bis formed is relatively large around an intersection point between the side edge sealing portion61and the bottom-portion peripheral edge sealing portion63.

Consequently, the sheet member container100has a structure with more flexibility in a portion where the first sheet portion31, the second sheet portion32and the bottom-portion forming sheet portion38are densely arranged, and hence the structural strength of the sheet member container100can be improved.

Also, a width size of the portion of the lower second non-attached region81bthat is defined by the bottom-portion peripheral edge sealing portion63and the outer peripheral side main-body sealing portion26agradually reduces toward the seal continuity portion64c. Consequently, even if there is an impact on the sheet member container100(due to the falling or the like), the impact on the seal continuity portion64ccan be reduced. It is therefore possible to favorably maintain the state where the film layers adjacent to each other are attached to each other in the seal continuity portion64c.

As illustrated inFIG.7, for example, a fourth non-attached region84in which the film layers that form the sheet member container100are not attached to each other is disposed between the bottom-portion peripheral edge sealing portion63and the main-body sealing portion26, in a region of at least part of the bottom portion13.

Consequently, a pair of left and right-side edge portions of the bottom portion13have a structure with a flexibility, and hence the bottom-portion filling portion73can be favorably expanded into a desired shape. Thus, the bottom-portion filling portion73can be sufficiently in contact with a mounting surface, and hence a freestanding property of the sheet member container100can be improved.

More specifically, the fourth non-attached region84is, for example, formed in each of the pair of left and right-side edge portions of the bottom portion13, and extends from a front-end portion to a rear-end portion of the bottom portion13. The fourth non-attached region84has, for example, a width gradually decreasing toward the front seal continuity portion64cand gradually decreasing toward the rear seal continuity portion64c.

Also, the fourth non-attached region84is disposed on an inner side of the skirt portion75.

The right fourth non-attached region84is defined by the bottom-portion peripheral edge sealing portion63aand a portion of the outer peripheral side main-body sealing portion26a. The left fourth non-attached region84is defined by the bottom-portion peripheral edge sealing portion63band a portion of the outer peripheral side main-body sealing portion26a.

A ratio of a region in which the second non-attached region81is disposed along the side edge sealing portion61in an overall length in the direction in which the side edge sealing portion61extends is equal to or more than 50%.

Consequently, when the user grips the sheet member container100, a portion of the side edge sealing portion61that corresponds to the second non-attached region81naturally touches the user's fingers and palm, and hence the texture of the sheet member container100can be softer.

Note that in the above description, an example where the second non-attached region81is formed in each of the pair of side edge portions12of the body portion11has been described, but the present invention is not limited to this example. The second non-attached region81may be formed only in one of the pair of side edge portions12of the body portion11. Also, the second non-attached region81may be formed only on one of the first surface portion20aside and the second surface portion20bside of the body portion11.

Modification 1 of First Exemplary Embodiment

Next, Modification 1 of the first exemplary embodiment will be described with reference toFIG.9. In addition,FIG.9is a partially enlarged view of a peripheral structure of the top-portion forming sheet portion39.FIG.9illustrates a region in which the peripheral edge sealing portion60is formed, with hatching rising to the left, and illustrates a region in which the main-body sealing portion26is formed, with hatching rising to the right.

The sheet member container100according to this modification is different from the sheet member container100according to the above first exemplary embodiment in terms of points described below. In other points, the container is configured similarly to the sheet member container100according to the above first exemplary embodiment.

In a case of this modification, as illustrated inFIG.9, a third non-attached region83in which film layers forming the sheet member container100are not attached to each other is disposed between the top-portion peripheral edge sealing portion62and the main-body sealing portion26, for example, in a region of at least part of the top portion14.

The third non-attached region83is formed into a circular shape along a peripheral edge portion of the top-portion forming sheet portion39, for example, in plane view.

According to the above-described configuration, the sheet member container100has a structure with a favorable flexibility in the peripheral edge portion of the top portion14. Consequently, for example, texture when a user grips the top-portion peripheral edge sealing portion62to mount and remove the cap portion90can be softened.

Modification 2 of First Exemplary Embodiment

Next, Modification 2 of the first exemplary embodiment will be described with reference toFIG.10AandFIG.10B. In addition,FIG.10AandFIG.10Billustrate a peripheral structure of the body portion11in partially enlarged view. Also,FIG.10AandFIG.10Billustrate a region in which the peripheral edge sealing portion60is formed, with hatching rising to the left, and illustrate a region in which the main-body sealing portion26is formed, with hatching rising to the right.

The sheet member container100according to this modification is different from the sheet member container100according to the above first exemplary embodiment and Modification 1 in terms of points described below. In other points, the container is configured similarly to the sheet member container100according to the above first exemplary embodiment and Modification 1.

As illustrated inFIG.10AandFIG.10B, the second non-attached region81according to this modification extends continuously over from a position adjacent to one end portion of the side edge sealing portion61to a position adjacent to the other end portion thereof.

More specifically, the body portion11does not include the seal continuity portion64a, and the second non-attached region81extends continuously over from a position adjacent to an upper end portion of the side edge sealing portion61to a position adjacent to a lower end portion thereof. An upper end of the second non-attached region81extends to the vicinity of a center of an upper end portion of the body portion11in a lateral direction, and a lower end of the second non-attached region81extends to the vicinity of a lower edge of the skirt portion75.

Therefore, a pair of side edge portions12of the body portion11has a favorable flexibility over a substantially entire region in an up-down direction. Consequently, texture at the time of gripping is favorable in any portion of the pair of side edge portions12in the up-down direction.

Second Exemplary Embodiment

Next, a second exemplary embodiment will be described with reference toFIG.11AandFIG.11B.

A sheet member container100according to this exemplary embodiment is different from the sheet member container100according to the above first exemplary embodiment in terms of points described below. In other points, the container is configured similarly to the sheet member container100according to the above first exemplary embodiment.

As illustrated inFIG.11AandFIG.11B, in a case of this exemplary embodiment, the sheet member container100does not include an inner bag40. Then, a container main body20constitutes a containing portion17. That is, in a peripheral edge sealing portion60(seeFIG.1and the like), portions of an inner film layer23of a main-body forming sheet member21are attached to each other to form an inner film layer sealing portion28a. Consequently, the container main body20is formed and the containing portion17is constituted. In other words, an outer film layer22and the inner film layer23are attached to each other and portions of the inner film layer23are attached to each other in the peripheral edge sealing portion60.

Also, in a second non-attached region81, the outer film layer22and the inner film layer23are not attached to each other.

The present invention is not limited to the above-described exemplary embodiments. Various modes such as changes and modifications are also included, provided that the object of the present invention is achieved.

For example, an example where the sheet member container100is a pump container including the pump portion92has been described above, but the sheet member container100may be other than the pump container. For example, the sheet member container100may include a cap (a screw cap or the like) that closes the outlet cylinder portion15a.

In this case, the sheet member container100includes the bottom portion13, and a discharge port may have a mode of independently standing with an upward posture, or the discharge port may have a mode of independently standing with a downward posture (inverted posture).

Alternatively, various constituent components of the sheet member container100do not have to exist individually and independently. For example, it may be allowed that a plurality of constituent components are formed as a member, one constituent component is formed of a plurality of members, one constituent component is part of the other constituent component, or part of one constituent component overlaps with part of the other constituent component.

REFERENCE SIGNS LIST