JP2020001739A - Packaging bag with roll-in blocking function - Google Patents

Abstract

To provide a packaging bag with a roll-in blocking function, which can eliminate a vacant space by bending an opened bag mouth and hold the bag mouth of the packaging bag in a closed state without using a clip or the like of another member.SOLUTION: A packaging bag 10 with a roll-in blocking function comprises: a bag body 12 that has at least one surface 14 and the other surface 16 opposed to each other; and a bag mouth 20 that can be opened in at least one of the surfaces of the bag body 12. A shape holding member 28 for holding the deformed state of the bag body 12 is provided to at least one of the surfaces 14 and 16 of the bag body 12. The bag mouth 20 side of the bag body 12 is deformed together with the shape holding member 28, and thus the opened bag mouth 20 can be held in a closed state.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a packaging bag with a wrap-in / closing function, and more particularly, to open and take out a part of a packaged object, remove the empty space by taking out the packaged bag, compact it again, close it again, and close the remaining packaged bag. TECHNICAL FIELD The present invention relates to a packaging bag with a winding-in / closing function for storing articles.

  At stores such as supermarkets and convenience stores, products such as confectionery and bread are displayed and sold in packaging bags made of plastic film such as polypropylene.

  Among these products, for example, confectionery is packed in a bag, and then the bag mouth is heat-sealed and sealed, and bread is heated and sealed at the bag mouth, and then the unfilled portion of the bag is twisted several times. A twisted neck portion is formed, and a bag clip (also called a binding clip) is attached to the neck. Further, other products are also sealed or bound in the vicinity of the bag mouth with a binding tool such as a binding tape or a twist tie.

  The bundling tool is of a type suitable for each of the packaging bags, for example, a sealing device comprising a bundling adhesive tape and a cutter (which is also generally referred to as a “back sealer”), a vinylite (registered trademark) ), Estai (trade name), twist tie, binding band, binding clip, and the like, and these are also introduced in patent literature.

  For example, Patent Literature 1 (Japanese Patent No. 4338241) discloses a plastic binding tie and a packaging bag using the same. As shown in FIG. 9A, the plastic tie 1 has a convex portion 2a serving as a core portion and a flat portion 2b serving as a blade portion, and these are made of the same material. That is, the binding tie 1 has a thermoplastic synthetic resin as a main component, and a filler, a lubricant such as zinc stearate, a phthalate-based, adipate-based or polyester-based plasticizer, a pigment and the like are appropriately selected and added. It is composed of a compound capable of imparting properties. As shown in FIGS. 9B and 9C, the binding tie is twisted around the bag mouth, and is attached and used using a hand or a binding jig along the torsion portion or the bag mouth.

  Patent Literature 2 below describes a packaging bag with binding parts. This packaging bag, at least from the outer surface side, is made of a laminated film obtained by laminating a base film and a sealant film, the periphery is heat-sealed in a bag shape, and a wire rod for binding parts is provided near the upper end portion, A packaging bag with a binding part that can reseal an opening with a binding part separated after opening, wherein the binding part wire is provided on at least one surface above an opening position of the packaging bag. .

  In addition, the packaging bag which attached the zipper near the bag mouth is described in the following patent documents 3 and 4.

Japanese Patent No. 4338241 JP 2006-321534 A JP 2008-044671 A Japanese Patent No. 6242520

  According to the above-mentioned prior art, when a consumer purchases a packaged confectionery, the consumer first opens the bag and eats a predetermined amount of food. Only). However, in this method, rubber bands or the like are not always at hand, and must be searched for. Of course, sealing cannot be performed without them.

  Also, if the bread cannot be eaten at once, the rest is left inside, the bag is twisted several times again to form a twisted neck, and a bag clip is attached to the neck. And sealed. However, in this method, the bag clip is reused. However, since the bag clip is removed from the bag at the time of opening, the bag is often forgotten or discarded due to the place where it is placed or discarded. Then searching for it can be tedious, time consuming and cumbersome. For this reason, the sealing is abandoned, or another tying tool is used in time. In addition, the clipped bag body is bound by the twisted neck despite the reduced bread volume, so that the portion above the neck protrudes longer, and this protruding portion is bulky, -There are problems such as poor appearance and obstruction, while also requiring storage space. If a twist tie is used in place of the bag clip, the tip of the tie may protrude outward and damage other items.

  In addition, when a binding jig is required for a packaging bag using the binding tie of Patent Document 1, a consumer cannot reseal after opening. Further, the packaging bag with binding parts of Patent Document 2 has the same problem as bread packaging, since the binding parts are cut off.

  Furthermore, the packaging bags of Patent Documents 3 and 4 have a complicated structure, a complicated manufacturing method, and are expensive.

  From the above, according to the prior art including that of the above-mentioned patent document, the packaging bag is opened, a part of the packaged object is taken out, and the space taken out by this taking out is eliminated, the appearance is compact, and it is not possible to store it in a compact form. Not considered.

  On the other hand, there is a strong demand from consumers for a package that can be opened, opened, occupied, free of space in a bag, compact, sealed and stored.

  Therefore, the present inventors have repeatedly conducted trial and error to solve the problems of the prior art and further develop a packaging bag to meet the above consumer demand.

  In the process, the confectionery is folded or rolled around the opening of the bag and sealed with a rubber band or clip (washing shears). As a means of holding and maintaining this folded or rolled up state (hereinafter, these are referred to as "rolling up"), taking a hint that the solution can be achieved if the holding and maintaining can be performed, That has a roll-in deformation function, a holding function to hold the rolled shape, and a return function that does not break even when rolled up and unwound), and attach the roll-up closed body to a packaging bag. As a result, the present invention has been completed.

  An object of the present invention is to open and partially remove an article to be packaged, remove the empty space by this removal, make the compact state, close the opening opening again, and store the remaining packaged articles. An object of the present invention is to provide a packaging bag with a roll-up / closing function that can be repeatedly stored.

A packaging bag with a roll-up / closing function according to a first aspect of the present invention is a package having a bag body having at least one face and the other face facing each other, and a bag mouth that can be opened on at least one of the bag bodies. A bag,
At least one of the one surface and the other surface of the bag body is provided with a shape holding member that holds a deformed shape of the bag body,
The bag body is characterized in that the opened bag mouth can be held closed by deforming the bag mouth side together with the shape holding member.

  The packaging bag with a roll-up / closing function according to a second aspect is the packaging bag according to the first aspect, wherein the shape holding member has a core material having a predetermined thickness and a predetermined length formed of a resin material. It is characterized by.

  Further, a packaging bag with a roll-up / closing function according to a third aspect is the packaging bag according to the first or second aspect, wherein the shape retaining portions are provided in at least one row and substantially parallel to the bag mouth. It is characterized by having been done.

  A packaging bag with a roll-up / closing function according to a fourth aspect is the packaging bag according to the first or second aspect, wherein the shape holding members are provided in at least one row and provided substantially at right angles to the bag mouth. It is characterized by having been done.

  The packaging bag with a roll-up / closing function according to a fifth aspect is the packaging bag according to any one of the first to fourth aspects, wherein the shape holding member includes at least one core material and the bag body. And an attachment member to be attached.

  According to the package with the winding-in / closing function of the first aspect, the opened state of the opened packaging bag can be closed without using a separate member such as a clip. In addition, by wrapping the bag, extra space inside the bag is eliminated, and the bag can be made compact.

  According to the packaging bag with a roll-up / closing function of the second aspect, the core material of the shape holding member is formed of a resin material, so that the cost can be reduced and the weight can be reduced. Can be used with

  According to the packaging bag with a roll-up / closing function of the third aspect, for example, even if the bag is formed by a side seal or a three-sided seal, the shape holding member can be provided. In addition, by arranging the shape holding members in several rows, it becomes possible to hold the folded shape even when the bag is folded until the bag becomes small.

  According to the packaging bag with a roll-up / closing function of the fourth aspect, for example, even if the bag is formed by sticking together (backing), the shape holding member can be provided. In addition, by providing the shape holding member substantially at right angles to the bag mouth, the bag mouth can be folded so as to be wrapped around the bag mouth, and the folded shape can be held.

  Moreover, according to the packaging bag with a roll-up / closing function of the fifth aspect, the force for maintaining the shape can be increased by increasing the number of cores.

1A is a front view of the packaging bag according to the first embodiment, FIG. 1B is a side view as viewed from one side, and FIG. 1C is a front view of the packaging bag with the opening of the bag opened. 2A is a plan view of the shape holding member, and FIG. 2B is a cross-sectional view taken along line IIB-IIB of FIG. 2A. 3A to 3D are front views showing a step of closing the bag mouth of the packaging bag according to the first embodiment. FIG. 4A is a plan view showing a state where the bag mouth of the packaging bag of the application example 1 of the first embodiment is opened, and FIG. 4B is a plane view showing a state where the bag mouth of the packaging bag of the application example 2 of the first embodiment is opened. FIG. FIG. 5A is a front view of the packaging bag according to the second embodiment, FIG. 5B is a side view seen from one side, and FIG. 5C is a front view of the packaging bag with the bag opening opened. 6A to 6D are front views illustrating a process of closing a bag mouth of the packaging bag according to the second embodiment. FIG. 7A is a plan view showing a state where the bag mouth of the packaging bag of Application Example 3 of Embodiment 2 is opened, and FIGS. 7B to 7D are steps of closing the bag mouth of the packaging bag of Application Example 3 of Embodiment 2. FIG. 7E is a side view as seen from one side showing a state where the packaging bags of Application Example 3 of Embodiment 2 are stacked. FIG. 8A is a perspective view of the packaging bag according to the third embodiment, and FIG. 8B is a perspective view showing a state where the bag mouth side is folded. 9A to 9C are diagrams showing a conventional example.

  Hereinafter, a packaging bag with a wrap-around function according to an embodiment of the present invention will be described with reference to the drawings. However, the embodiment shown below is an example of a packaging bag with a roll-up / closing function for embodying the technical idea of the present invention, and is not intended to specify the present invention. It is equally applicable to other embodiments falling within the scope of the claims.

[Embodiment 1]
First, a packaging bag 10 with a roll-up / closing function according to a first embodiment will be described with reference to FIGS.

  As shown in FIGS. 1A and 1B, a packaging bag 10 with a winding / closing function according to the first embodiment (hereinafter sometimes simply referred to as a packaging bag 10) has a flat surface 14 as one surface, At the approximate center, for example, a back surface 16 as the other surface provided with a seal portion 34 bonded by heat welding is provided, and one of the folded side portions 24 and the other side portion 26, and the upper portion 18 and the bottom portion 22 are formed by, for example, heat welding, so-called pillow type bags (also referred to as gasket-attached bags or back-attached bags), and at least one row provided in the bag body 12; In the first embodiment, the upper opening 18 of the bag body 12 is a bag opening 20 to be opened. The upper portion 18 of the packaging bag 10 is opened by cutting off the upper portion 18 or peeling off the heat welding of the upper portion 18 (see FIG. 1C). In addition, although the to-be-packaged material will be included in the inside of the bag body 12, illustration is abbreviate | omitted and below, it demonstrates only the state of the packaging bag 10.

  In the bag body 12 of the packaging bag 10 of the first embodiment, one resin sheet material is folded back on one side 24 and the other side 26 side, and each of the folded ends is thermally welded, for example. To form a flat surface 14 on one side and a back surface 16 provided with a heat-sealed seal portion 34 on the other, and the upper portion 18 and the bottom portion 22 are, for example, heat-sealed. It is in the shape of a bag. At this time, the seal portion 34 is provided from the upper portion 18 to the bottom portion 22 of the bag body 12. The bag body 12 is formed of a resin material, for example, PET (polyethylene terephthalate) resin.

  The shape holding member 28 is a member having a certain plastic force, and can hold the deformed shape by the plastic force. As shown in FIG. 2, at least one shape holding member 28 is formed of a resin material, and in the first embodiment, one core member 30, and the mounting member 28 covers the core member 30 and is attached to the bag body 12. And a member 32.

  The shape holding member 28 of the first embodiment is substantially perpendicular to the bag opening 20 (upper part 18) on at least one of the front surface 14 and the rear surface 16 of the bag body 12 and on the outer surface side of the front surface 14 in the first embodiment. Two rows are provided from the upper part 18 to the bottom part 22 so as to have a predetermined width. The shape holding member may be provided on the inner surface side of the bag body 12.

  The core material 30 of the shape maintaining member 28 of the first embodiment is formed of, for example, PE (polyethylene). The attachment member 32 is formed of, for example, PET (polyethylene terephthalate) resin.

  The thickness φ of the core member 30 is, for example, 0.5 mm to 1.0 mm in diameter. The thickness φ of the core material 30 is related to the plastic force when the bag body 12 to be described later is deformed. As the thickness increases, the plastic force increases, but when the packaging bags 10 are overlapped, the thickness increases. For this reason, narrower is preferable.

  The attachment member 32 is provided so as to cover the core member 30 so as to be attached to the bag body 12, and one surface side is attached to the bag body 12. For this attachment, for example, an adhesive may be used, or attachment may be performed by heat welding.

  Next, how to close the bag mouth 20 by the packaging bag 10 of the first embodiment will be described with reference to FIG. First, the bag mouth 20 shown in FIG. 3B is closed from the bag body 12 in the state where the bag mouth 20 of the packaging bag 10 shown in FIG. 3A is opened, and the bag body 12 is folded together with the shape holding member 28 so as to be involved. . At this time, one side 24 and the other side 26 are also bent.

  Then, as shown in FIGS. 3C and 3D, the bag mouth 20 is closed and the empty space inside the bag body 12 is eliminated by performing the winding of the bag body 12 and the shape holding member 28 a plurality of times. It can be compact. The number of times that the bag 12 and the shape holding member 28 are wound can be appropriately changed according to the amount of contents inside the bag 12.

  In the packaging bag 10 of the first embodiment, since the shape holding member 28 is rolled in along with the bag body 12, a plastic force for holding the shape in the shape holding member 28 acts. it can. Thus, the closing of the bag mouth 20 of the packaging bag 10 of the first embodiment is completed.

  With such a configuration, in the packaging bag 10 of the first embodiment, the opened bag can be closed without using a clip or the like as a separate member. In addition, by wrapping the bag, extra space inside the bag is eliminated, and the bag can be made compact.

  In addition, although the case where the shape holding members 28 of the packaging bag 10 of the first embodiment are two rows has been described, the shape holding members 28 are not limited to this, and may be one row, or may be three or more rows.

  Further, in the packaging bag 10 of the first embodiment, since the core material 30 of the shape holding member 28 is formed of a resin material, it can be used in a microwave oven, for example, unlike a metal core material.

  Furthermore, if the bag mouth is used in a microwave oven with the bag mouth closed, the so-called gas barrier property is exhibited in which the bag mouth is opened due to an increase in internal pressure, so that the increased internal pressure is released to the outside and the bag body is damaged. Can be suppressed.

[Application Example 1]
Further, in the packaging bag 10 of the first embodiment, the shape holding member 28 is attached to any surface of the bag body 12, for example, the front surface 14, but is not limited to this, as in the packaging bag 10 'shown in FIG. 4A. The shape holding member 28 'may be provided on the seal portion 34'. That is, the configuration is such that the shape holding member 28 'is provided on the seal portion 34 provided on the back surface 16 of the pillow type bag body 12' of the packaging bag 10 '. In this way, when forming the pillow type bag body 12 ', the shape holding member 28' can be attached together with the welding of the seal portion 34 '. Therefore, a member having no welding force on the shape holding member 28 'can be used. At this time, the shape holding member 28 'may be constituted by the core member 30' and the attachment member 32 ', or may be constituted only by the core member 30'.

[Application Example 2]
Further, as shown in a packaging bag 10 ″ shown in FIG. 4B, the shape holding member 28 is provided on the one side 24 and the other side 26 of the bag body 12 from the upper portion 18 (bag opening 20) to the bottom portion. 22. That is, when forming the bag 12 "of the packaging bag 10", the shape holding members 28 "are arranged on one side 24 and the other side 26, respectively. It is attached by heat welding. By doing so, even if the shape holding member does not have a welding force, it can be attached by heat welding with the bag. Further, the shape holding member 28 "may be constituted by the core member 30" and the mounting member 32 ", or may be constituted only by the core member 30".

[Embodiment 2]
Next, a packaging bag 10A according to a second embodiment will be described with reference to FIGS. The case of the so-called pillow type bag body 12 has been described for the packaging bag 10 of the first embodiment, but the case of the so-called side seal type bag body 12A will be described for the packaging bag 10A of the second embodiment. The same components as those in the first embodiment are denoted by the same reference numerals, and the detailed description is omitted.

  As shown in FIGS. 5A and 5B, the packaging bag 10A according to the second embodiment has a planar surface 14A as one surface and a planar back surface 16A as the other surface, and the folded bottom portion 22A The upper part 18A, the one side part 24A and the other side part 26A are each formed by, for example, heat welding, so-called a side seal type bag body 12A, and a roll-up closure provided in the bag body 12A. And a shape holding member 28 having a mechanism. In the second embodiment, an upper portion 18A side of the bag body 12A is a bag opening 20A to be opened (see FIG. 5C). In addition, opening of the upper part 18A side of the packaging bag 10A is performed by cutting off the upper part 18A side or peeling off the heat welding of the upper part 18A. In addition, although the to-be-packaged material is included in the inside of the bag body 12A, illustration is omitted and the following description will be made only for the packaging bag 10A.

  The bag body 12A of the packaging bag 10A according to the second embodiment is formed by folding a single resin sheet material on the bottom portion 22A side, one of which is the front surface 14A, the other is the back surface 16A, the upper portion 18A, one side 24A and the other. The side part 26A is formed in a bag shape by, for example, heat welding. The bag body 12A is formed of a resin material, for example, PET (polyethylene terephthalate) resin.

  The shape holding member 28 is a member having a certain plastic force as in the first embodiment, and can hold the deformed shape by the plastic force. Further, the shape holding member 28 of the second embodiment is configured such that one of the front surface 14A and the rear surface 16A of the bag body 12A, and in the second embodiment, the shape holding member 28 is substantially parallel to the bag opening 20A (upper portion 18A) outside the front surface 14A. Is provided.

  The shape holding member 28 includes a single core member 30 formed of a resin material, and an attachment member 32 that covers the core member 30 and is attached to the bag body 12 (see FIG. 2).

  The core 30 is made of, for example, PE (polyethylene). The attachment member 32 is formed of, for example, PET (polyethylene terephthalate) resin.

  In the shape holding member 28 according to the second embodiment, the core member 30 and the attachment member 32 are attached from one side 24A to the other side 26A substantially in parallel with the bag opening 20A of the bag 12A. Have been.

  The thickness φ of the core member 30 is, for example, 0.5 mm to 1.0 mm in diameter. The thickness φ of the core material 30 is related to the plastic force when the bag body 12A described later is deformed, and as the thickness increases, the plastic force increases, but when the packaging bag 10A is overlapped, the thickness increases. Therefore, it is preferable to make it thin.

  The attachment member 32 is provided so as to cover the core member 30 so as to be attached to the bag body 12A, and one surface side is attached to the bag body 12A. For this attachment, for example, an adhesive may be used, or attachment may be performed by heat welding.

  Next, how to close the bag opening 20A by the packaging bag 10A of the second embodiment will be described with reference to FIG. First, from the bag body 12A in the state where the bag mouth 20A of the packaging bag 10A shown in FIG. 6A is opened, only the bag mouth 20A shown in FIG. . Also, one side 24A and the other side 26A are bent to the same extent.

  Next, as shown in FIG. 6C, the bag body 12A is bent again so that the shape holding member 28 is wound around the upper portion 18A of the bag body 12A. In this manner, by folding the bag opening 20A side plural times, the bag opening 20A is closed, and the empty space inside the bag body 12A can be eliminated and the bag body 12A can be made compact. Note that the number of times the shape holding member 28 is wound can be appropriately changed depending on the amount of the contents inside the bag body 12A.

  Then, as shown in FIG. 6D, the shape holding member 28 that is entangled is bent toward the center with the one side 24A and the other side 26A together with the bag body 12A to deform the shape holding member 28. At this time, a plastic force acts on the shape holding member 28, so that the shape in the deformed state can be held, and the sealing is completed.

  With such a configuration, the opened bag can be closed without using a separate member such as a clip in the packaging bag 10A of the second embodiment. In addition, by wrapping the bag, extra space inside the bag is eliminated, and the bag can be made compact.

  In addition, in the packaging bag 10A of Embodiment 2, when attaching the shape holding member 28 to the bag 12A, besides attaching the whole with an adhesive or heat welding, the shape holding member 28A and one side 24A of the bag 12A are attached. Alternatively, the mounting may be performed only at the portion of the other side portion 26A that is thermally welded. By doing so, it becomes possible to attach even a shape holding member having no welding force.

[Application Example 3]
Further, in the packaging bag 10A of the second embodiment, the case where the shape holding members 28 are arranged in one row has been described. A packaging bag 10B according to an application example of the second embodiment will be described with reference to FIG. In addition, the same reference numerals are given to the common components, and the detailed description is omitted.

Packaging bag 10B applications 3, as shown in FIG. 7A, _(is set to 28 1 to 28 _3.) The shape retaining member 28 of the three rows such that is substantially parallel to the bag mouth 20 to have a predetermined width Attached to.

  Since the bag body 12A is made of a resin material, the bag body 12A is elastically deformed by folding, so that an elastic force to return to the original state is applied. At this time, the core member 30 of the shape holding member 28 can seal the bag mouth 20 by applying a plastic force larger than this elastic force. On the other hand, when the contents of the packaging bag 10B are reduced or when the packaging bag 10B is to be folded small, the number of times of folding increases, and the elastic force of the bag body 12A also increases.

Therefore, as in the packaging bag 10B applications, by attaching the shape retaining member 28 _{1-28 3} in a plurality of rows, it is possible to obtain a larger plastic force than the elastic force when folded a plurality of times.

Incidentally, Closing the bag mouth 20A of the packaging bag 10B is, in common with the second embodiment, as shown in FIG 7B~ Figure 7D, to involve the shape retaining member ₂₈ 1-28 ₃ from the side close to the bag mouth 20A folding the bag 12A, the end is performed by folding the upper side of one side 24A and the other side 26A obliquely with shape-retaining member ₂₈ 1-28 _3.

  Further, by providing a plurality of rows of the shape holding members 28, the plastic force can be increased even with a thin core material without increasing the thickness of the core material. For this reason, if the core material is made thicker, the portion of the core material becomes thicker when the packaging bags are overlapped. However, by using the packaging bag 10B of the application example, as shown in FIG. The packaging bags 10B can be overlapped.

[Embodiment 3]
Further, as the packaging bag 10C of the third embodiment, a so-called gusset-fold type bag body 12C as shown in FIG. 8A can be used. In addition, in the packaging bag 10C of the third embodiment, as shown in FIG. 8A, two rows are attached to the bag body 12C from the upper part 18C to the bottom part 22C like the shape holding member 28 of the first embodiment. I have. In the packaging bag 10C of the third embodiment, the packaging bag is attached to the front surface 14C and the back surface 16C, respectively. By attaching the shape holding member 28 to such a gusset-fold type bag 12C, the bag opened by folding can be closed as shown in FIG. 8B without using a separate member such as a clip. Become like In addition, by wrapping the bag, extra space inside the bag is eliminated, and the bag can be made compact.

  In the shape holding members 28 of the packaging bags 10, 10 </ b> A, and 10 </ b> C according to the first to third embodiments, the case in which the number of the core members 30 is one has been described. At this time, the mounting member can have an arbitrary width depending on a use mode. By doing so, the plastic force of the shape holding member 28 can be increased without increasing the thickness of the core material. Further, since the core material can be made thinner, the thickness can be suppressed even when the packaging bags are stacked, so that many packaging bags can be stacked. Note that the number of core materials may be four or more.

  In the first to third embodiments, the core member 30 of each shape holding member 28 has a circular cross section. However, the present invention is not limited to this, and an elliptical or polygonal cross section may be used.

  Further, in the first to third embodiments, each shape holding member 28 of the packaging bag is provided only on the front surface side of the bag body. However, the present invention is not limited thereto, and may be provided only on the back surface. You may make it provide in both surfaces of a back surface. Further, the bag may be provided not only on the outer surface side but also on the inner surface side.

10, 10 ', 10 "10A, 10B, 10C: Packaging bag with wrap-around function (packaging bag)
12, 12 ', 12 ", 12A, 12C: bag body 14, 14A, 14C: front surface 16, 16A, 16C: back surface 18, 18A, 18C: top 20, 20A, 20A: bag mouth 22, 22A, 22C: bottom. 24, 24A: One side 26, 26A: The other side 28, 28 ', 28 ", 28A: Shape holding member 30, 30', 30": Core material 32, 32 ', 32 ": Mounting member 34. , 34 ': Seal part

Claims (5)

A bag having a bag body having at least one surface and the other surface facing each other, and a bag opening that can be opened in at least one of the bag bodies,
At least one of the one surface and the other surface of the bag body is provided with a shape holding member that holds a deformed shape of the bag body,
The packaging bag with a roll-up / closing function, wherein the bag body is deformed on the bag mouth side together with the shape holding member so that the opened bag mouth can be held in a closed state.   The packaging bag with a roll-up / closure function according to claim 1, wherein the shape holding member has a core material formed of a resin material and having a predetermined thickness and a predetermined length.   The packaging bag with a roll-up / closure function according to claim 1, wherein the shape holding members are provided in at least one row and substantially parallel to the bag mouth.   The packaging bag with a roll-up / closure function according to claim 1 or 2, wherein the shape holding members are provided in at least one row and are provided substantially at right angles to the bag mouth.   The winding closure according to any one of claims 1 to 4, wherein the shape holding member includes at least one core material and an attachment member attached to the bag body. Packaging bag with function.

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