JP2013023223A - Storage bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a storage bag which is sealed with a simple operation, and sealed in an unchanged manner even when the sealing is repeated many times.SOLUTION: The storage bag is formed of a packaging material with a sealant layer being layered on an inner surface, and has side seal parts 14 at least on right and left sides with an upper side thereof being opened. An intermediate seal part 13 across the right and left side seal parts 14 is provided in a projecting manner on an outer surface of any one of the surface side or the back side on a part inside the upper side, and the storage bag is sealed by folding the intermediate seal part 13 with its root section as a base point. When the intermediate seal part 13 is folded back with its root section being the base point after the content is placed from an opening part of the upper side, the return of the folded-back section is controlled by the presence of the intermediate seal part 13, and the closed state is maintained. Thus, the storage bag can be sealed by a simple operation of folding back the bag.

Description

  The present invention belongs to the technical field of bags containing solids, powders, fluids, and the like, and particularly relates to a storage bag used for storing these.

  Conventionally, for example, when storing remaining food and ingredients, it is generally stored in a glass or plastic container and then stored in a refrigerator or freezer. In order to have the property or in consideration of disposable, it is also carried out by storing in a storage bag with a zipper or a storage bag with an adhesive tape.

Utility model registration No. 3166159 JP 2006-82872 A Japanese Utility Model Publication No. 62-78641

  Since the storage bag as described above is made of a soft packaging material, it has an advantage that the cost is lower than that of a glass or plastic container, and it can be disposable. However, for example, a storage bag with a zipper has a problem of an increase in cost due to the attachment of the zipper. When the contents are, for example, powder, the fitting strength is reduced due to the influence of powder biting at the fitting portion of the zipper. There is a problem of doing. Moreover, the storage bag with an adhesive tape has the problem that the adhesive strength of an adhesive tape falls by repeating sealing operation many times.

  In the case of a storage bag with a zipper, it is necessary to fit the zipper when sealing. In the case of a storage bag with a label, the adhesive tape is applied after the opening is folded an appropriate number of times. There is a problem that the operation for sealing is not so easy.

  The present invention has been made in view of the problems of the conventional storage bags as described above, and the purpose of the present invention is to be able to be sealed with a simple operation, and to repeat the initial operation even if it is repeated many times. Another object is to provide a storage bag that can be sealed in the same way.

  In order to achieve the above object, a storage bag according to the present invention is produced by making a packaging material in which a sealant layer is laminated on an inner surface, and has side seal portions on at least left and right sides, and an upper side is open. The storage bag is provided with an intermediate seal portion extending over the left and right side seal portions on the outer surface of either the front surface side or the back surface side on the inner side from the upper side, and the intermediate seal portion It is characterized in that it can be sealed by folding it back from the root of the base.

  In the storage bag of the present invention, after putting the contents from the opening on the upper side and then folded back with the root part of the intermediate seal part inside the upper side as the base point, the folded part is returned due to the presence of the intermediate seal part. Since it is suppressed and the closed state is maintained, it can be sealed by a simple operation of folding the bag. Moreover, in a storage bag with a zipper or a storage bag with a label, the fitting power of the zipper and the adhesive strength of the sealing label are reduced, so that the resealability gradually decreases when the resealing operation is repeated. In the case of a storage bag, since the bag is sealed by folding the bag, the resealability does not deteriorate even if repeated.

It is a perspective explanatory view showing an example of a preservation bag of a 1st embodiment concerning the present invention. It is a cross-sectional explanatory drawing in the AA line of FIG. FIG. 2 is an explanatory perspective view showing the storage bag of FIG. 1 in a closed state. It is explanatory drawing shown corresponding to FIG. 2 in the state which closed the preservation | save bag of FIG. It is explanatory drawing which shows the modification of the preservation | save bag of 1st Embodiment corresponding to FIG. It is a perspective explanatory view showing an example of the storage bag of the second embodiment according to the present invention. FIG. 7 is a cross-sectional explanatory view taken along line AA in FIG. 6. FIG. 7 is an explanatory perspective view showing the storage bag of FIG. 6 in a closed state. It is explanatory drawing shown corresponding to FIG. 7 in the state which closed the preservation | save bag of FIG. FIG. 8 is an explanatory view showing a modified example of the storage bag of the second embodiment corresponding to FIG. 7. It is a perspective explanatory view showing a modification of the storage bag of the second embodiment. FIG. 12 is a cross-sectional explanatory view taken along line AA in FIG. 11. FIG. 8 is an explanatory view showing a modified example of the storage bag of the second embodiment corresponding to FIG. 7. It is a perspective explanatory view showing an example of a preservation bag of a 3rd embodiment concerning the present invention. It is a section explanatory view showing an example of the preservation bag of a 4th embodiment concerning the present invention corresponding to FIG. It is a section explanatory view showing an example of the preservation bag of a 4th embodiment concerning the present invention corresponding to FIG. It is a cross-sectional explanatory drawing which shows another example of the preservation | save bag of 4th Embodiment which concerns on this invention corresponding to FIG. It is a cross-sectional explanatory drawing which shows another example of the preservation | save bag of 4th Embodiment which concerns on this invention corresponding to FIG. FIG. 7 is an explanatory sectional view showing an example of a storage bag according to a fifth embodiment of the present invention corresponding to FIG. 6. FIG. 20 is a perspective explanatory view showing the storage bag of FIG. 19 in a closed state. It is an isometric view explanatory drawing which shows the modification of the seal pattern of an intermediate seal part. It is a perspective explanatory view showing an example of the preservation bag of other embodiments concerning the present invention.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

[First Embodiment]
The storage bag 10 shown in FIGS. 1 and 2 is in the form of a flat pouch. As shown in the drawing, the packaging material 11 with the longer vertical size folded in half at the bottom and the packaging material 12 with the shorter vertical size are shown. Is bonded in a straight line so as to traverse left and right at the intermediate seal portion 13 sealed to the base, and further bonded in a straight line at the side seal portions 14 on both sides of the left and right sides. Is formed so as to be orthogonal to the side seal portions 14 on both the left and right sides.

  The production procedure of the storage bag 10 by the bag making machine is, for example, as follows. While a single packaging material is being conveyed by the bag making machine, first, the sheet is conveyed so that the left and right ends face each other, and the bottom portion is folded and the intermediate seal portion 13 is formed simultaneously. Next, the left and right seals are performed to form the side seal portion 14, and then the upper side is cut off in the subsequent process to form the opening. Finally, it is cut with a guillotine blade so as to separate one bag at the side seal portion 14. Thereby, the storage bag 10 shown in FIG.1 and FIG.2 is manufactured. In this example, the bottom seal is not formed, but a bottom seal may be formed as necessary.

  The storage bag 10 shown in FIG. 1 is sold in a state where a plurality of storage bags 10 are collected, and the purchased storage bag 10 is used as a container for storing, for example, remaining food and ingredients. Specifically, after the contents are introduced from the opening on the upper side, the bag is folded up and down with the root portion of the intermediate seal portion 13 inside the opening end as a base point. Then, as shown in FIG. 3 and FIG. 4, the intermediate seal portion 13 is present in the folded portion, so that the return (repulsion that the folded portion tries to return) is suppressed, and the closed state is maintained in a sealed state. Is done. Thus, when it is set as the form of a flat pouch, since a return is suppressed by the dead weight of the preservation | save bag 10 and a content by putting a folding | turning part down after throwing in a content, a sealing effect is improved. be able to.

  A modification of the storage bag 10 shown in FIGS. 1 and 2 is shown in FIG. FIG. 5 corresponds to FIG. 2, and the storage bag 10 shown in FIG. 5 is obtained by retrofitting an intermediate seal 13A to a flat pouch. That is, after the packaging material 11A that is long in the vertical direction is opposed in a folded state with the sealant layer as the inner side, it is pasted linearly at the side seal portions on the left and right sides, and then the outer surface on either the front side or the back side Further, the intermediate seal portion 13 </ b> A straddling the left and right side seal portions is pasted to a portion inside the upper side in a protruding state. This intermediate seal portion 13A is made of a rectangular packaging material, and is bent into a T-shape and bonded to each other by hot melt, and then attached to the storage bag 10 by hot melt. You may attach with an adhesive agent and a heat seal not only hot melt. Further, in this example, the intermediate seal portion 13A is retrofitted so as to straddle the left and right side seal portions, but it may be attached inside the side seal portion.

[Second Embodiment]
The storage bag 20 shown in FIGS. 6 and 7 is in the form of a standing pouch. As shown in the drawing, the packaging material 21 having the longer top and bottom size W-folded at the bottom and the packaging material 22 having the shorter top and bottom size are shown. Is bonded in a straight line so as to cross the left and right with an intermediate seal portion 23 sealed to the root, and further bonded in a straight line with side seal portions 24 on both left and right sides. Is formed so as to be orthogonal to the side seal portions 24 on both the left and right sides.

  The production procedure of the storage bag 20 by the bag making machine is, for example, as follows. While transporting one piece of packaging material with the bag making machine, first, punch hole processing is performed to form bottom holes necessary for bonding both ends of the bottom of the standing pouch on the front and back. Next, the left and right end portions are conveyed to face each other, and the bottom portion is folded and the intermediate seal portion 23 is formed at the same time. Next, after performing the parabolic bottom seal and the linear side seal to form the bottom seal portion 26 and the side seal portion 24, the upper side is cut off in the subsequent process to form the opening. Finally, it is cut with a guillotine blade so as to separate one bag at the side seal portion 24. Thereby, the storage bag 20 shown in FIG.6 and FIG.7 is manufactured.

  The storage bag 20 shown in FIG. 6 is sold in a state in which a plurality of storage bags 20 are collected. After the purchase, the storage bag 20 is used, for example, as a container for storing the remaining food and ingredients. Specifically, after the contents are put in from the opening on the upper side, the bag is folded up and down with the base portion of the intermediate seal portion 23 inside the opening end as a base point. Then, as shown in FIGS. 8 and 9, the folded portion is prevented from returning due to the presence of the intermediate seal portion 23 (repulsion that the folded portion tries to return to its original state), and the closed state is maintained in a sealed state. Is done. Thus, when it is set as the form of a standing pouch, an opening part will leave | separate from a floor surface and it is hygienic.

  Although the storage bag 20 shown in FIGS. 6 and 7 has a structure made up of two packaging materials 21 and 22, it may have a structure made up of four packaging materials as shown in FIG. That is, one side of the front and back is composed of a long packaging material 21A, and the other side of the front and back is composed of two packaging materials 21B and 22 having a short vertical size, with the other two packaging materials 21B and 22 extending to the base. It is opposed to the packaging material 21A on one side in a state where it is linearly bonded by the sealed intermediate seal portion 23. Then, between the opposing front and back packaging materials (the packaging materials 21A and the packaging materials 21B and 22), the packaging material 21C having an inverted V-shaped cross section is interposed, and the bottom seal portion 26 is bonded together in a radial pattern, and It is good also as a structure bonded together linearly by the side seal part 24 of the right-and-left both sides.

  A modification of the storage bag 20 shown in FIGS. 6 and 7 is shown in FIGS. This storage bag 20 is the same in the form of a standing pouch, but the longer packaging material 21 W-folded at the bottom and the shorter packaging material 22 folded at the lower end are on the left and right sides. It is bonded by an intermediate seal portion 23 orthogonal to the side seal portion 24, and is different in that the bottom portion is not sealed but W-folded. Since the bottom of the storage bag 20 swells when the contents are filled, the content of the storage bag 20 is larger than that of the storage bag 20 shown in FIG. When manufacturing a standing pouch with the bottom folded in W, a plate may be inserted to form the bottom folded portion instead of the step of bottom sealing.

  A modification of the storage bag 20 shown in FIGS. 6 and 7 is shown in FIG. FIG. 13 corresponds to FIG. 7, and the storage bag 20 is obtained by retrofitting an intermediate seal portion 23A to a standing pouch. That is, the packaging material on the front side and the back side is opposed to each other with the sealant layer inside, and a packaging material having an inverted V shape is interposed between the packaging materials, and the bottom sealing portion 26 is bonded in a parabolic shape, and the sides on the left and right sides After pasting linearly at the seal portion, the intermediate seal portion 23A straddling the left and right side seal portions is stuck on the outer surface of either the front side or the back side on the inner side from the upper side. . The intermediate seal portion 23A is made of a rectangular packaging material, and is attached to the storage bag 20 by hot melt after being bent into a T-shape and pasted with hot melt. You may attach with an adhesive agent and a heat seal not only hot melt. Further, in this example, the intermediate seal portion 23A is retrofitted so as to straddle the side seal portion, but it may be attached inside the side seal portion.

[Third Embodiment]
The storage bag 30 shown in FIG. 14 is in the form of a gusset bag having folds on the bottom and both sides. Specifically, one side of the front and back is composed of a packaging material 31 having a long vertical size, the other side of the front and back is composed of two packaging materials 32A and 32B having a short vertical size, and the packaging material 32A and 32B on the other side is up to the root. It is opposed to the packaging material 31 on one side in a state of being linearly bonded by the sealed intermediate seal portion 33, and the cross section is reversed between the opposed packaging materials (the packaging material 31 and the packaging materials 32A and 32B). Three V-shaped packaging materials, that is, a packaging material 34 at the bottom and a packaging material 35 on both sides, respectively, and the bottom packaging material 34 are linearly bonded together by a bottom seal portion 36 along the bottom side. Then, the packaging material 35 on both sides is linearly bonded to the left and right side seal portions 37, and the left and right edges of the packaging material 34 on the bottom and the lower edge of the packaging material 35 on the side are bonded together. Side packaging Has a folded structure in the combined bottom 35 to fold the bottom of the packaging material 34, the intermediate sealing portion 33 is formed so as to be perpendicular to the side seal portion 37 of the left and right both sides.

  If the bottom and both sides have pleats (gussets) like this type of storage bag 30, the opening can be widened as a rectangle or a square, so the contents can be easily put in, or the contents There is an advantage that it is easy to take out. Moreover, since it can be stood upright, an opening part will leave | separate from a floor surface and it is hygienic.

[Fourth Embodiment]
Next, 4th Embodiment of this invention is described based on the storage bag 10 of 1st Embodiment. 15 corresponds to FIG. 2 and FIG. 16 corresponds to FIG. 4. The storage bag 10 shown in FIG. 15 is located at a position corresponding to the intermediate seal portion 13 of the packaging material 11 from the outside to the inside. The indented push rule a is provided. This ruled line a can be formed by embossing the packaging material 11 using a mold such as a mold or a roller.

  Thus, by providing the stamped rule a, after the contents are put into the storage bag 10 from the opening on the upper side, the storage bag 10 is used with the root portion of the intermediate seal portion 13 as a base point as shown in FIG. Folds up and down, the intermediate seal portion 13 is located at the folded portion, and the return (repulsion where the folded portion tries to return to the original) is suppressed, and the folded state is maintained by the action of the push ruler a. It becomes easy to do.

  17 corresponds to FIG. 2 and FIG. 18 corresponds to FIG. 4. The storage bag 10 shown in FIG. 17 is located at a position corresponding to the intermediate seal portion 13 of the packaging material 11 from the outside to the inside. The indented indented ruled line a is provided, and the packaged material 12 on the intermediate seal portion 13 side is further provided with the ruled line b. The push ruled b is provided so as to be along the root of the intermediate seal portion 13 in an outward state of being recessed from the inside toward the outside. As described above, when the ruled line b is also provided on the packaging material 12, it becomes easier to hold the folded state. Even if only the push ruled line b along the root of the intermediate seal portion 13 is provided, the folded state can be easily maintained as compared with the case where no push ruled rule is provided.

  The ruled lines a and b for holding the folded state are particularly effective when a material having high dead hold properties such as paper and aluminum foil is not used as a packaging material for forming the storage bag.

[Fifth Embodiment]
Next, a fifth embodiment of the present invention will be described based on the storage bag 20 of the second embodiment. FIG. 19 corresponds to FIG. 6, and the storage bag 20 shown in FIG. 19 is such that the intermediate seal portion 23 is not a straight belt, but has a deformation pattern as shown. That is, the intermediate seal portion 23 is formed in a gently curved shape so that the width gradually decreases from the central portion sealed to the base toward both sides, and overlaps with the side seal portions 24 on both the left and right sides with a small width. I have to. As a result, a triangular unsealed portion 23n connected to the inside is formed where the intermediate seal portion 23 and the left and right side seal portions 24 intersect.

  In this way, when the intermediate seal portion 23 is formed into a deformation pattern as shown in the figure, the bag is folded up and down with the root portion of the intermediate seal portion 23 as a base point to seal the storage bag 20 filled with the contents. In addition, the presence of the intermediate seal portion 23 at the folded portion suppresses the return (repulsion where the folded portion tries to return to the original state), but further, as shown by the arrows in FIG. 20, the intermediate seal portion 23 and the side seal portion. When the vicinity of the intersection of 24 is picked and pushed in the direction opposite to the folded portion (from the near side to the far side in FIG. 20), the packaging material is stretched and slightly warped to the side without the intermediate seal portion 23, A lock is applied at the corner where the seal portion 23 and the side seal portions 24 on both the left and right sides intersect, and repulsion (lifting) of the folded portion can be suppressed.

[Other Embodiments]
As mentioned above, although the form for implementing this invention has been demonstrated in detail, the preservation | save bag by this invention is not limited to said embodiment at all, In the range which does not deviate from the meaning of this invention, it is various changes. It is natural that this is possible.

  For example, in the storage bag of the first to fourth embodiments that is simply folded back with the root portion of the intermediate seal portion as the base point, the overlapping packaging material is sealed to the root of the intermediate seal portion straddling the left and right side seal portions. However, it may be formed with a seal pattern as illustrated in FIG.

  FIG. 21 shows a modified example of the seal pattern of the intermediate seal portion 13 based on the storage bag 10 of the first embodiment. FIG. 21A shows only the root portion across the left and right side seal portions 14. (B) is a pattern in which sealing is performed across the left and right side seal portions 14, but only the vicinity of the center is sealed to the root, and both sides of the pattern are sealed with the root portion open. c) is a pattern in which sealing is performed across the left and right side seal portions 14, but only the root portion near the center is opened and both sides thereof are sealed to the root. If at least the root portion of the intermediate seal portion is sealed in this way, the return is suppressed due to the presence of the intermediate seal portion when the bag is folded back. However, the more the region that seals the root portion, the more the repulsion that the folded portion tries to return to can be suppressed, so the sealing effect can be enhanced.

  The storage bag shown in FIG. 22 has a cut line 17 that becomes a latching portion that overlaps and can be engaged with each other when the bag is folded up and down in the storage bag 10 shown in FIG. Are formed on the side seal portions 14 on both the left and right sides. By providing such a cut 17, the contents are introduced from the opening on the upper side, and then the bag is folded up and down with the root portion of the intermediate seal portion 13 inside the opening end as a base point, and both left and right sides of the folded portion By engaging the cuts 17 that overlap each other at the end edges, the sealed state can be maintained. With such a configuration, the sealing effect can be further enhanced.

[Packaging materials]
As a packaging material used for the storage bag of the present invention, a laminated film mainly composed of plastic is used. In a simple configuration, a laminated film having a structure in which a sealant layer is laminated on a base film layer is used. Depending on the contents filled in the bag, the handling conditions after filling, or the required performance such as water vapor and other gas barrier properties, light shielding properties, various mechanical strengths, the base film layer and the sealant layer For example, a laminated film having a structure in which a water vapor or other gas barrier layer, a light shielding layer, a strength improving layer and the like are laminated as an intermediate layer is used.

  The base film layer, water vapor or other gas barrier layer, light shielding layer, intermediate layer such as a strength improving layer, sealant layer, etc. may be formed as a single layer, but may be formed by laminating a plurality of layers. May be.

  In addition to the biaxially stretched film of polyester such as polyethylene terephthalate (PET) and polyethylene naphthalate, the base film layer is biaxially stretched of polyamide such as nylon 6, nylon 66, MXD6 (polymetaxylylene adipamide). A film, a biaxially stretched polypropylene film (OPP), etc. can be used conveniently.

  Examples of the gas barrier layer include saponified ethylene / vinyl acetate copolymer (EVOH), polyvinylidene chloride (PVDC), polyacrylonitrile (PAN), aluminum foil (AL), silica, alumina, Biaxially stretched nylon film (ON film) provided with a vapor deposition layer such as aluminum or a coating layer of PVDC, polyethylene terephthalate (VMPET) provided with a vapor deposition layer such as silica, alumina, aluminum, biaxially stretched polyethylene terephthalate film (PET) Film), a biaxially oriented polypropylene film (OPP film), and the like can be used. Among these, since the film provided with the aluminum foil or the aluminum vapor deposition layer is opaque, it can also serve as a light shielding layer.

  As the strength improving layer, any one of the base films may be additionally laminated as appropriate, and a biaxially stretched high-density polyethylene film or the like may also be laminated as a moisture-proof layer.

  In addition, an easily tearable uniaxially stretched polypropylene film, a uniaxially stretched high-density polyethylene, an easily tearable biaxially stretched polyester film ("Emblet" PC (easy to tear in the MD direction), manufactured by Unitika Ltd.), etc. Are laminated so that the stretching direction coincides with the tearing direction at the time of opening the bag, the tearing can be facilitated and the directionality can be stabilized as the easy-opening means.

  A known dry lamination method or extrusion lamination method (sandwich lamination method) can be used for laminating the base film layer and an intermediate layer such as a gas barrier layer, a light shielding layer, or a strength improving layer.

  For the sealant layer, in addition to low density polyethylene (LDPE) and linear low density polyethylene (LLDPE), ethylene / α-olefin copolymer, ethylene / vinyl acetate copolymer, ethylene / acrylic acid copolymer, ethylene -Acrylic ester copolymer-Polypropylene (VMPP) provided with a vapor deposition layer such as ionomer, polypropylene (CPP), silica, alumina, aluminum, or a copolymer thereof can be used.

  For the lamination of the sealant layer, the above resin can be formed into a film and laminated by a dry lamination method or an extrusion lamination method, or the above resin can be extruded and laminated. However, in the case where the content easily penetrates into the sealant layer, it is preferable to laminate by a dry lamination method.

  As a specific example of such a laminated film mainly composed of plastic, a packaging material having the following layer structure can be typically mentioned. The following 1) to 10) are laminated films by a dry lamination method, and each layer is bonded with an adhesive. In addition, the value in () shows the thickness of each layer.

1) PET (12 μm) / CPP (30 to 150 μm)
2) PET (12 μm) / LLDPE (30 to 150 μm)
3) PET (12 μm) / VMPET (12 μm) / LLDPE (30 to 150 μm)
4) PET (12 μm) / VMPET (12 μm) / CPP (30 to 150 μm)
5) PET (12 μm) / AL (6-7 μm) / LLDPE (30-150 μm)
6) OPP (20 μm) / CPP (30 to 150 μm)
7) OPP (20 μm) / LLDPE (30 to 150 μm)
8) OPP (20 μm) / VMPP (30 to 150 μm)
9) VMPET (12 μm) / CPP (30 to 150 μm)
10) PET (12 μm) / AL (6-7 μm) / CPP (30-150 μm)

  As the packaging material used for the storage bag of the present invention, in addition to the laminated film mainly composed of the plastic as described above, a packaging material having paper in the layer structure can also be used. As a laminate of such papers, a packaging material having the following layer structure can be exemplified. Since the repulsive force of paper is lower than that of plastic, the resealing effect can be enhanced as compared with the case of being made of only plastic. The following 1) to 4) are laminated films by a dry lamination method, and each layer is bonded with an adhesive. The following 5) to 11) are laminated films by an extrusion lamination method, and PE (polyethylene) serves as an adhesive layer. In addition, the value in () shows the thickness of each layer.

1) Paper (30-60 g / m ² ) / CPP (30-150 μm)
2) Paper (30-60 g / m ² ) / LLDPE (30-150 μm)
3) Paper (30-60 g / m ² ) / AL (6-7 μm) / CPP (30-150 μm)
4) Paper (30-60 g / m ² ) / AL (6-7 μm) / LLDPE (30-150 μm)
5) Paper (30-60 g / m ² ) / PE (15-30 μm) / AL (6-7 μm) / PE (15-30 μm)
6) Paper (30-60 g / m ² ) / PE (15-30 μm) / AL (6-7 μm) / PE (15-30 μm) / CPP (30-150 μm)
7) Paper (30-60 g / m ² ) / PE (15-30 μm) / AL (6-7 μm) / PE (15-30 μm) / LLDPE (30-150 μm)
8) PET (12 μm) / PE (15-30 μm) / paper (30-60 g / m ² ) / PE (15-30 μm) / AL (6-7 μm) / PE (15-30 μm)
9) PET (12 μm) / PE (15-30 μm) / Paper (30-60 g / m ² ) / PE (15-30 μm) / AL (7 μm) / PE (15-30 μm) / CPP (30-150 μm)
10) PET (12 μm) / PE (15-30 μm) / Paper (30-60 g / m ² ) / PE (15-30 μm) / AL (6-7 μm) / PE (15-30 μm) / LLDPE (30-150 μm) )
11) PET (12 μm) / PE (15-30 μm) / VMPET (12 μm) / PE (15-30 μm) / LLDPE (30-150 μm)

  Needless to say, the storage bag of the present invention can be used not only when storing the remaining food and ingredients but also when storing other things. Moreover, as a form of a bag, it can apply widely also to 3-way seal bags other than the above, a 4-way seal bag, etc. Further, the storage bag of the present invention can be used not only for storing solids, powders, fluids and the like, but also for cooking for microwave ovens, for example.

DESCRIPTION OF SYMBOLS 10 Storage bag 11, 11, 12 Packaging material 13, 13A Intermediate seal part 14 Side seal part 15 Cut 20 Storage bag 21, 21A, 21B, 21C, 22 Packaging material 23, 23A Intermediate seal part 23n Unsealed part 24 Side seal part 30 Storage bag 31, 32A, 32B Packaging material 33 Intermediate seal part 34, 35 Packaging material 36 Bottom seal part 37 Side seal part a, b

Claims (1)

  It is a storage bag which is made by making a packaging material with a sealant layer laminated on the inner surface, has side seal portions on at least both the left and right sides, and has an open upper side, either on the front side or the back side An intermediate seal portion straddling the left and right side seal portions protrudes from the upper side of the outer surface of the intermediate seal portion, and can be sealed by folding back with the base portion of the intermediate seal portion as a base point. storage bags.

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