JP2013203438A - Side gusset bag, simple food container using the same, and simple mat for food - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a side gusset bag from which a food container a favorable appearance to be conveniently used by neatly opening the gusset bag into four parts along folds can be easily formed, and also, does not become bulky after use, is easily disposable, and can be easily manufactured at a low cost.SOLUTION: A side gusset bag 10 includes: a pair of front parts 2, 4; and a pair of sides 6, 8 which are inwardly foldable toward the front parts 2, 4. One material film 5, its inside surface is a heat seal layer having an easy peeling property, and folded, and also four pillar sealing parts 12, 14, 16 and 18 are formed by bonding inner end edges of the front parts 2, 4 adjacent to the sides 6, 8 by heat-sealing, and upper end corners 15 of the pillar sealing parts 12, 14, 16 and 18 are cut off.

Description

  The present invention relates to a side gusset bag suitable for packaging foods, etc., and a simple food container and a simple food rug formed using the side gusset bag.

  Conventionally, a relatively hard resin tray has been used as a packaging means for storing food such as side dishes and rice balls. Such a resin tray is used as it is on a dining table as a simple plate or bowl on which food is placed, or is discarded after the food inside is moved to normal tableware. However, such resin trays have various shapes and dimensions and are bulky, so that it is difficult to store them in general households until they are discarded, and the volume of waste increases. There's a problem.

  On the other hand, as a packaging means for storing food, there is a packaging bag such as a side gusset bag made of a relatively thin resin film. Since the packaging bag made of such a resin film can be easily reduced in volume by being folded after use, etc., it is easy to store until it is discarded compared to the resin tray, It is possible to reduce the volume of waste.

  As such a packaging bag, for example, an easy-open packaging bag in which a laminated film composed of a linear cut film and a heat-fusible film is heat-sealed to form a bag has been proposed (for example, a patent). Reference 1). This packaging bag has a heat-bonding part that is easily peelable and has a non-adhesive part between the film edge. Then, both corners of the non-adhesive part are cut, and the cut part can be opened from the non-adhesive part along the fold line as a band opening start point.

  Further, a gusset bag composed of four laminated films in which a base material layer and an easy peel sealant layer are laminated and formed by heat-sealing the sealant layers of the four laminated films together has been proposed. (For example, refer to Patent Document 2). The gusset bag can be easily opened and can be kept stable on a table or the like after opening.

JP 2004-26169 A JP 2006-199337 A

  However, it is practically difficult to open the packaging bag proposed in Patent Document 1 straight along the folding line. In particular, when the length to be opened is long, it is gradually shifted and torn, so it cannot be said that the appearance after opening is good. For this reason, it was difficult to use as it is as a container after opening.

  Moreover, since the gusset bag proposed in the cited document 2 is manufactured by heat-sealing four films, the manufacturing process becomes extremely complicated. For this reason, the manufacturing cost is expensive, and it cannot be said that it is practical as a simple packaging means or food container that is manufactured in large quantities and discarded after use.

  The present invention has been made in view of the above-described problems of the prior art, and the object of the present invention is simply to open four beautifully along the crease without departing from the crease line. A side gusset bag which can be easily formed without being bulky after use, and can be easily produced at low cost, and can be easily formed as a good-looking food container to be used. The object is to provide a simple food container and a simple food rug formed.

That is, according to the present invention, the following side gusset bag is provided.
[1] A side gusset bag including a pair of front portions and a pair of side portions that can be folded inside the front portion, and at least an inner surface of the bag is a heat seal layer having easy peel properties. While the raw film is bent, four column seal portions are formed in which the inner edge of each of the adjacent front portion and side portion is bonded by heat sealing, and the upper end corner portion of the column seal portion is A side gusset bag that is cut off or has a notch formed in the middle of the column seal portion (hereinafter, also referred to as “first side gusset bag”).
[2] The width of the column seal portion is 5 to 7 mm, and the heat seal strength of the column seal portion measured in accordance with JIS-Z-0238 is 2 to 8 N / 15 mm. Side gusset bag.
[3] A side gusset bag including a pair of front portions and a pair of side portions that can be folded inside the front portion, and at least one inner surface film of which is a heat seal layer is folded. In addition, four column seal parts are formed by bonding the inner edge of each of the adjacent front part and side part, and the upper part of the column seal part is adhered by a part coat agent, A side gusset bag in which the lower part of the column seal part is bonded by heat sealing, and the upper end corner of the upper part of the column seal part is cut off or a notch is formed in the middle of the upper part of the column seal part (Hereinafter also referred to as “second side gusset bag”).
[4] The column seal portion has a width of 5 to 7 mm, a heat seal strength of the lower portion of the column seal portion measured in accordance with JIS-Z-0238 is 9 N / 15 mm or more, and the column seal portion The side gusset bag according to [3], wherein the upper seal strength is lower than the heat seal strength of the lower portion of the pillar seal portion.
[5] The side gusset bag according to [3] or [4], wherein an outer portion along the column axis direction of the column seal is cut off.
[6] The side gusset bag according to any one of [1] to [5], further including an adhesive portion disposed on at least one of the front portion and the side portion.

Moreover, according to this invention, the simple food container shown below is provided.
[7] Cut the four column seal portions of the side gusset bag according to any one of [1] to [6] from the upper end corners to the middle along the folds, and cut the front portions and the side surfaces. Each part is opened in a band shape, or after the upper part is cut off from the notch, the front part and the side part are each opened in a band shape by cutting through the notch from the notch partway along the crease. A simple food container formed by folding a front surface portion and the side surface portion outward from the bottom surface.

Furthermore, according to the present invention, the following simple rug for food is provided.
[8] Cut the four column seal portions of the side gusset bag according to [1] or [2] from the upper end corner portion to the lower end along the crease to respectively open the front portion and the side portion. A simple rug for food, which is formed by opening in a band shape, or cutting the upper part from the notch and then opening the front part and the side part in a band form by cutting the notch from the notch to the lower end along the crease.

  The first and second side gusset bags of the present invention can be opened beautifully along the fold line without detaching from the fold line. Therefore, it is possible to easily form a good-looking food container that is used simply. Moreover, since it does not become bulky after use, it can be easily discarded, and it can be easily produced at low cost. And the simple food container and simple rug for food of this invention can be formed easily, and its appearance is also good. Moreover, since it does not become bulky after use, it can be easily discarded. Furthermore, since the simple food container and the simple food rug of the present invention are lighter than the relatively hard resin trays that are widely used, they are not only easy to dispose of, but also save raw materials (resource saving). Can also contribute.

It is a perspective view showing typically one embodiment of the 1st side gusset bag of the present invention. It is the A section enlarged view of FIG. It is a perspective view which shows typically other embodiment of the 1st side gusset bag of this invention. It is the B section enlarged view of FIG. It is a perspective view showing typically one embodiment of the 2nd side gusset bag of the present invention. It is a perspective view which shows typically other embodiment of the 2nd side gusset bag of this invention. It is a schematic diagram explaining the method of opening four side gusset bags shown in FIG. It is a perspective view showing typically one embodiment of the simple food container of the present invention. It is a perspective view which shows typically one Embodiment of the simple rug for foodstuffs of this invention.

  Embodiments of the present invention will be described below, but the present invention is not limited to the following embodiments. Hereinafter, the term “side gusset bag” simply means either “first side gusset bag” or “second side gusset bag”.

(First side gusset bag)
First, the detail of the 1st side gusset bag of this invention is demonstrated. FIG. 1 is a perspective view schematically showing an embodiment of the first side gusset bag of the present invention. FIG. 2 is an enlarged view of a portion A in FIG. As shown in FIGS. 1 and 2, the first side gusset bag 10 of the present embodiment includes a pair of front portions 2, 4 and a pair of side portions 6, which can be folded inside the front portions 2, 4. 8, and one raw material film 5 is bent. Adjacent front edges 2 and 4 and side faces 6 and 8 are bonded to each other at their inner edges by heat sealing, thereby forming four column seal parts 12, 14, 16 and 18. Further, on the upper portion of the front portion 2, adhesive portions 7a and 7b whose surfaces are protected by, for example, release paper are disposed. In addition, the adhesion part may be arrange | positioned only in one place, and may be arrange | positioned in multiple places as shown in FIG. Furthermore, the adhesion part may be arrange | positioned on the surface of the front part, and may be arrange | positioned on the back surface.

  One raw material film 5 constituting the first side gusset bag 10 is a heat seal layer having at least an inner surface having easy peel properties. Moreover, all the upper end corner | angular parts 15 of the column seal parts 12, 14, 16, and 18 are cut off linearly. In this way, the upper end corner 15 of the column seal portions 12, 14, 16, 18 is cut off, so that the column seal portions 12, 14, 16, 18 are moved from the respective upper end corner 15 along the fold line 11. Thus, the front portions 2, 4 and the side portions 6, 8 can be opened in a strip shape (see FIG. 7). 1 and 2 show a state in which the upper end corner 15 is cut off in a straight line, the upper end corner of the column seal portion may be cut out in an R shape.

  FIG. 3 is a perspective view schematically showing another embodiment of the first side gusset bag of the present invention. FIG. 4 is an enlarged view of a portion B in FIG. As shown in FIGS. 3 and 4, the first side gusset bag 20 of the present embodiment is similar to the first side gusset bag 10 shown in FIG. 2 and 4 and a pair of side surface parts 6 and 8 that can be folded inside. In addition, the first side gusset bag 20 is configured by folding a single material film 5 which is a heat seal layer having at least an inner surface having easy peel properties. And the inner surface edge of each of the adjacent front parts 2 and 4 and the side parts 6 and 8 is adhere | attached by the heat seal, and, thereby, the four pillar seal parts 22, 24, 26, and 28 are formed. . In addition, the adhesive part 7 is arrange | positioned at the upper part of the front part 2. As shown in FIG.

  A notch 25 that is a triangular (V-shaped) notch is formed in the middle of the column seal portions 22, 24, 26, and 28. Thus, when the notch 25 is formed in the middle of the column seal portions 22, 24, 26, 28, after the upper portion is cut off from the notch 25 of the first side gusset bag 20, the column seal portions 22, 24, The front portions 2 and 4 and the side surface portions 6 and 8 can be opened in a strip shape by cutting out 26 and 28 linearly and cleanly from the respective notches 25 along the fold line 11.

  In the first side gusset bag of the present invention, the width of the column seal portion is preferably 15 mm or less, more preferably 12 mm or less, particularly preferably 10 mm or less, and preferably 5 to 7 mm. Most preferred. The heat seal strength of the column seal portion is preferably 2 to 8 N / 15 mm, more preferably 2.5 to 7 N / 15 mm, particularly preferably 3 to 6 N / 15 mm, Most preferably, it is 5 N / 15 mm. By setting the width of the column seal portion and the heat seal strength within the above ranges, it becomes easier to linearly cut along the crease starting from the cut off upper end corner or notch. In addition, the heat seal strength of the column seal portion in the present specification is a value measured according to JIS-Z-0238.

(Second side gusset bag)
Next, the detail of the 2nd side gusset bag of this invention is demonstrated. FIG. 5 is a perspective view schematically showing one embodiment of the second side gusset bag of the present invention. As shown in FIG. 5, the second side gusset bag 30 of the present embodiment includes a pair of front portions 2 and 4 and a pair of side portions 6 and 8 that can be folded inside the front portions 2 and 4. The raw material film 5 having at least an inner surface as a heat seal layer is bent and configured. Adjacent front surface portions 2, 4 and side surface portions 6, 8 are bonded to the inner surface edges thereof, thereby forming four column seal portions 32, 34, 36, 38. In addition, adhesive portions 7a and 7b are disposed on the upper portion of the front portion 2.

  The upper portions 32a of the column seal portions 32, 34, 36, and 38 are all bonded with a part coat agent. The lower portions 32b of the column seal portions 32, 34, 36, and 38 are all bonded by heat sealing. Moreover, all the upper end corner | angular parts 15 of the column seal | sticker part 32,34,36,38 are cut off linearly. Thus, the upper end corner 15 of the column seal portions 32, 34, 36, 38 is cut off, so that the upper portions 32 a of the column seal portions 32, 34, 36, 38 are folded from the upper end corner 15. 11, the front portions 2, 4 and the side portions 6, 8 can be opened in a strip shape. Further, the lower portions 32b of the column seal portions 32, 34, 36, and 38 are bonded by heat sealing having higher sealing strength than bonding by the part coat agent. For this reason, when the upper part 32a of the column seal parts 32, 34, 36, and 38 is opened with a constant force along the fold line 11 and reaches the upper end of the lower part 32b, the seal strength changes (increases), so that the appropriate position Opening can be stopped naturally. In addition, in FIG. 5, although the state where the upper end corner | angular part 15 was cut off linearly is shown, the upper end corner | angular part of a pillar seal part may be cut off into R shape.

  FIG. 6 is a perspective view schematically showing another embodiment of the second side gusset bag of the present invention. As shown in FIG. 6, the second side gusset bag 40 of the present embodiment is similar to the second side gusset bag 30 shown in FIG. 5. 4 is provided with a pair of side surface parts 6 and 8 that can be folded inside. The second side gusset bag 40 is formed by folding a single raw film 5 having at least an inner surface as a heat seal layer. And the inner surface edge of each of the adjacent front parts 2 and 4 and the side parts 6 and 8 is adhere | attached, The four pillar seal parts 42, 44, 46, and 48 are formed by this. In addition, the adhesive part 7 is arrange | positioned at the upper part of the front part 2. As shown in FIG.

  The upper portions 42a of the column seal portions 42, 44, 46, and 48 are all bonded with a part coat agent. The lower portions 42b of the column seal portions 42, 44, 46, and 48 are all bonded by heat sealing. Further, a notch 25 that is a triangular (V-shaped) notch is formed in the middle of the column seal portions 42, 44, 46, and 48. Thus, if the notch 25 is formed in the middle of the column seal portions 42, 44, 46, 48, after the upper portion is cut off from the notch 25 of the second side gusset bag 40, the column seal portions 42, 44, 46 and 48 can be cut linearly and cleanly along the fold line 11 from the respective notches 25, and the front portions 2 and 4 and the side portions 6 and 8 can be opened in a strip shape.

  Further, the lower portions 42b of the column seal portions 42, 44, 46, and 48 are bonded by heat sealing having higher sealing strength than bonding by the part coat agent. For this reason, when the upper portion 42a of the column seal portions 42, 44, 46, and 48 is opened with a constant force along the fold line 11 and reaches the upper end of the lower portion 42b, the seal strength changes (increases), so that an appropriate position is obtained. Opening can be stopped naturally.

  In the second side gusset bag of the present invention, the width of the column seal portion is preferably 15 mm or less, more preferably 12 mm or less, particularly preferably 10 mm or less, and preferably 5 to 7 mm. Most preferred. And it is preferable that the heat seal intensity | strength of the lower part of a column seal part is 9 N / 15mm or more, and it is preferable that the seal | sticker intensity | strength of an upper part is lower than the heat seal intensity | strength of a lower part. By setting the relationship between the width of the column seal part, the heat seal strength at the bottom of the column seal part, and the seal strength at the top and bottom of the column seal part as described above, the cut off upper end corner and notch It becomes easier to linearly open along the crease as a starting point, and can be more easily stopped at the lower upper end where the seal strength changes (increases). In addition, when the film made from a linear low density polyethylene (LLDPE) is used as a raw material film, the heat seal intensity | strength of the lower part of a pillar seal part will be about 100-170 N / 15mm. When a non-stretched polypropylene (CPP) film is used as the raw material film, the heat seal strength of the lower part of the column seal portion is about 9 to 25 N / 15 mm.

  It is preferable that the part coat agent can have a seal strength of about 2.5 to 5.4 N / 15 mm. As a commercial product of such a part coat agent, a trade name “PP66 Seal SC” (manufactured by Toyo Ink Co., Ltd.) can be exemplified. In the present invention, the part coat agent is used as a heat seal inhibitor, and the part coat agent is applied by applying the part coat agent to the heat seal layer of the raw material film having no easy peel property. Easy peel has been given to only.

(Raw material film)
The raw material film which comprises a 1st side gusset bag should just be the heat seal layer in which the inner surface has an easy peel property. On the other hand, the raw material film constituting the second side gusset bag may be at least the inner surface of which is a heat seal layer, and the inner surface does not need to have easy peel properties. As a raw material film, for example, a film (that is, a laminated film) provided with a base material and a heat seal layer disposed on one surface of the base material, or a film consisting of only a heat seal layer (that is, a single layer) Film) or the like. In addition, the bonding of the base material constituting the laminated film and the heat seal layer may be dry lamination, extrusion lamination, or bonding by other methods.

  The side gusset bag of the present invention does not become bulky after use, unlike a relatively hard resin tray that is widely used. Further, since it is lighter than a resin tray, it can be easily discarded and can contribute to saving of raw materials (resource saving). Furthermore, since the side gusset bag of the present invention is composed of a single raw material film, it can be easily manufactured as compared with the gusset bag described in Patent Document 2 and the like. For this reason, it is expected to reduce the cost required for bag making processing to about 1/3 to 1/5. Further, the side gusset bag of the present invention can be manufactured according to a conventionally known method for manufacturing a side gusset bag in which a bag is made while pulling out a long raw material film wound in a roll shape. From the viewpoint of ease of manufacture, the so-called vertical bag making machine is preferable because it is more prevalent than the so-called horizontal bag making machine.

  In the side gusset bag of the present invention, among the four column seal portions, three column seal portions are in a state in which the raw material film is bent, and the raw material film is not cut off. For this reason, for example, unlike a gusset bag obtained by combining four films and heat-sealing as described in Patent Document 2, when a slight impact is applied while the contents are accommodated, Even if it exists, the column seal portion is not easily broken and the contents are not easily leaked to the outside. In addition, when the outer portion along the column axis direction of the column seal is cut off, it becomes easier to cut along the crease from the upper end corner or notch. However, when considering the impact resistance (preventing leakage of contents), it is preferable not to cut off the outer portion along the column axis direction of the column seal. On the other hand, about the 2nd side gusset bag, since the part coat agent at the time of opening can be prevented by cutting off the outer part of a pillar seal, it is preferable. In addition, as shown in FIGS. 1, 3, 5 and 7, the bottom may be sealed so as to be a general boat bottom, or the bottom may be sealed so as to be a square bottom.

  Specific examples of the substrate include the following trade names, such as Trefan BO YT42 (manufactured by Toray Industries, Inc.), Karariyan YA2 (manufactured by Denki Kagaku Kogyo Co., Ltd.), and the like; Film for horizontal cutting having longitudinal linear cut properties such as Unitika Ltd., Emblet PC (Unitika Ltd.), Uniathlon TB (Idemitsu Unitech Ltd.), Nobrene ASCM (Mitsui Chemicals Ltd.); OP U-1 ( Mitsui Chemicals Tosero Co., Ltd., FOR (Futamura Chemical Co., Ltd.), Cellophane PL (Futamura Chemical Co., Ltd.), Cellophane G (Futamura Chemical Co., Ltd.), E5100 (Toyobo Co., Ltd.), N1100 (Toyobo Co., Ltd.), etc. Can be mentioned.

  Specific examples of the heat-seal layer having an easy peel property (for laminated film) are as follows. A. Examples thereof include F 650C (manufactured by Mitsui Chemicals Tosero Co., Ltd.), CF film (manufactured by Toray Film Processing Co., Ltd.), IMX film (manufactured by J Film Co., Ltd.), and differential E7300T (manufactured by DIC). Specific examples of the heat seal layer having an easy peel property (for a single layer film) include FOLD-H (manufactured by Phutamura Chemical Co., Ltd.), ES1 (manufactured by Gunze Co., Ltd.) and the like under the following trade names.

(How to use side gusset bags)
Next, a method for using the side gusset bag of the present invention will be specifically described by taking the first side gusset bag 10 shown in FIGS. 1 and 7 as an example. To use the first side gusset bag 10, first, meat potato, boiled mackerel, potato salad, bite cutlet and shredded cabbage, sashimi platter, salad platter, etc .; cut vegetables; cut fruits; rice balls; sandwiches Put food such as inside from the opening. Then, the opening is sealed by heat-sealing the seal portion 3 or the like, or the food is accommodated inside by simply bending the upper portion or the like. Such an operation is easily carried out, for example, at a food factory or a side dish of a retail store. When the second side gusset bags 30 and 40 as shown in FIGS. 5 and 6 are used, the seal part 3 is formed by application of a part coat agent and thermal bonding to seal the opening, Or what is necessary is just to accommodate a foodstuff inside by only bend | folding an upper part.

  When the food contained in the first side gusset bag 10 is taken out, if the opening is heat-sealed, the opening may be pinched by hand and opened by applying force. Moreover, when the upper part is bent, it is only necessary to release the bending. In addition, in the case of the side gusset bag as shown in FIGS. 3 and 6 in which a notch is formed in the middle of the column seal portion, it can be easily opened by separating the upper portion from the notch.

  Next, as shown in FIG. 7, the column seal portions 12, 14, 16, and 18 are linearly cut along the crease 11 from the respective upper corner portions 15. Thereby, the front parts 2 and 4 and the side parts 6 and 8 can each be opened in strip shape. 3 and 6, in the case of a side gusset bag in which a notch is formed in the middle of the column seal portion, the column seal portion may be cut linearly from the notch along the crease.

  When the food stored in the interior is a low-moisture food such as a rice ball or sandwich, the column seal portions 12, 14, 16, and 18 may be cut open to the lower end. A simple food rug 60 (folded fold) as shown in FIG. 9 can be formed by opening the column seal portions 12, 14, 16, 18 to the lower end. In addition, the code | symbol 55 in FIG. 9 shows the bottom face part of the simple rug 60 for foodstuffs. On the other hand, when the food accommodated in the inside is a side dish or the like containing a lot of moisture, it is preferable to open the column seal portions 12, 14, 16, and 18 halfway. It is possible to prevent moisture from leaking out by cutting halfway (that is, not cutting to the lower end).

  After the pillar seal portions 12, 14, 16, and 18 are cut open halfway, the front portions 2 and 4 and the side portions 6 and 8 that are opened in four strips and folded back to the outside 45 on the bottom surface are folded back into FIG. A simple food container 50 as shown can be formed. When the adhesive portions 7a and 7b as shown in FIG. 1 are arranged on the upper portion of the front portion 2, the belt-like front portions 2 and 4 folded back to the outer bottom surface 45 by the adhesive portions 7a and 7b and The side parts 6 and 8 can be fixed. By fixing with the adhesive portions 7a and 7b, even if the food of the contents gradually decreases, it is difficult to turn over, and a stable container can be obtained. It is also possible to make it easier to place a plurality of containers side by side.

  EXAMPLES Hereinafter, although this invention is demonstrated concretely based on an Example, this invention is not limited to these Examples.

(1) First side gusset bag (Example 1)
Biaxially stretched polypropylene film (trade name “OP U-1”, manufactured by Mitsui Chemicals, Inc., thickness: 25 μm) as a base material, polypropylene resin film (trade name “TAF 650C”, Mitsui Using a laminated film of a dry laminate having a heat seal layer made by Kagaku Tosero Co., Ltd. (thickness: 30 μm) as a raw material film, a side gusset bag at the bottom of the boat was obtained using a vertical bag making machine. The upper side corners of the four column seal portions of the obtained boat bottom side gusset bag were cut off obliquely to produce a first side gusset bag having a configuration as shown in FIGS. In addition, the heat seal strength of the column seal part was about 2.8 to 3.5 N / 15 mm.

  The four pillar seal portions of the manufactured first side gusset bag were cut open from each upper end corner portion to a position about ¼ from the bottom portion along the crease. As a result, it was possible to cleanly and linearly open any of the pillar seal portions. Moreover, it was able to be set as the simple food container of a structure as shown in FIG. 8 by folding up the front part and side part which were opened by strip | belt shape each to the bottom surface outer side. On the other hand, the four column seal portions of the manufactured first side gusset bag were cut open from the upper end corner portions to the bottom portion (lower end) along the creases. As a result, it was possible to cut straight and cleanly in any pillar seal portion, and a simple rug for food having a configuration as shown in FIG. 9 could be obtained.

(Example 2)
Biaxially stretched polypropylene film (trade name “Trephan BO YT42”, manufactured by Toray Film Processing Co., Ltd., thickness: 25 μm) as a base material, polypropylene resin film (trade name “CF film 9501A”, Toray Film Processing Co., Ltd.) A laminate film of a dry laminate having a heat seal layer as a heat seal layer was used as a raw material film, and a side gusset bag at the bottom of a boat was obtained using a vertical bag making machine. A notch is formed in a triangle (V shape) in the middle of the four column seals of the obtained side gusset bag at the bottom of the boat, and a first side gusset bag having a configuration as shown in FIGS. 3 and 4 is produced. did. In addition, the heat seal strength of the column seal portion was about 2 to 4 N / 15 mm. After the upper part was cut off from the notch of the produced first side gusset bag, the four column seal parts were cut open from each notch to a position about ¼ along the crease from the bottom part. As a result, it was possible to cleanly and linearly open any of the pillar seal portions. Moreover, it was able to be set as the simple food container of a structure as shown in FIG. 8 by folding up the front part and side part which were opened by strip | belt shape each to the bottom surface outer side. On the other hand, after the upper part was cut off from the notch, the four column seal parts were cut open from each notch to the bottom part (lower end) along the crease. As a result, it was possible to cut straight and cleanly in any pillar seal portion, and a simple rug for food having a configuration as shown in FIG. 9 could be obtained.

(2) Second side gusset bag (Example 3)
A laminated film with a biaxially stretched polypropylene film (thickness: 20 μm) as the base material and a non-stretched polypropylene film (thickness: 20 μm) as the heat seal layer is used as the raw material film, and a vertical bag making machine is used. I got a side gusset bag at the bottom of the boat. For the four column seals, the upper part was coated with a part coat agent (trade name “PP66 Seal SC”, manufactured by Toyo Ink Co., Ltd.) at a plate depth of 60 μm and thermally bonded, and the lower part was bonded by heat sealing. The upper side corners of the four column seal portions of the obtained boat bottom side gusset bag were cut off obliquely to produce a second side gusset bag having a configuration as shown in FIG. The upper seal strength of the column seal portion was about 3.2 to 4 N / 15 mm, and the lower heat seal strength was about 10 N / 15 mm.

  The four column seal portions of the produced second side gusset bag were cut open from the respective upper end corners to the lower upper end of the column seal along the crease. As a result, it was possible to cleanly and linearly open any of the pillar seal portions. Moreover, it was able to be set as the simple food container of a structure as shown in FIG. 8 by folding up the front part and side part which were opened by strip | belt shape each to the bottom surface outer side.

Example 4
Stretched nylon film (trade name “Emblem NC”, manufactured by Unitika, thickness: 15 μm) as a base material, linear low density polyethylene (LLDPE) film (TUX MC-S, Mitsui Chemicals, Inc.) A laminated film obtained by laminating them by polyethylene extrusion lamination was used as a raw material film, and a side gusset bag at the bottom of the boat was obtained using a bag making machine. For the four column seals, the upper part was coated with a part coat agent (trade name “PP66 Seal SC”, manufactured by Toyo Ink Co., Ltd.) at a plate depth of 60 μm and thermally bonded, and the lower part was bonded by heat sealing. A notch was formed in a triangle (V-shaped) in the middle of the four pillar seal portions of the obtained boat side gusset bag to produce a second side gusset bag having a configuration as shown in FIG. The upper seal strength of the column seal portion was about 3.2 to 5.2 N / 15 mm, and the lower heat seal strength was about 100 N / 15 mm.

  After the upper part was cut off from the notch of the produced second side gusset bag, four column seal portions were cut open from each notch to the lower upper end of the column seal along the crease. As a result, it was possible to cleanly and linearly open any of the pillar seal portions. Moreover, it was able to be set as the simple food container of a structure as shown in FIG. 8 by folding up the front part and side part which were opened by strip | belt shape each to the bottom surface outer side.

  The side gusset bag of the present invention can easily package foods such as side dishes, cut vegetables, cut fruits, rice balls, sandwiches and the like, and can be used as a food container after being opened.

2, 4: Front part 3: Seal part 5: Raw material film 6, 8: Side part 7, 7a, 7b: Adhesive part 10, 20: First side gusset bag 11: Fold 12, 12, 16, 18: Pillar Seal portion 15: upper end corner portions 22, 24, 26, 28: pillar seal portion 25: notch 30, 40: second side gusset bags 32, 34, 36, 38: pillar seal portions 32a, 42a: upper portions 32b, 42b : Lower part 42, 44, 46, 48: Pillar seal part 45: Bottom outer side 50: Simple food container 55: Bottom part 60: Simple rug for food

The present invention has been made in view of such problems of the prior art, and the problem is that the present invention can be used simply by opening the front part and the side part into four strips. It is possible to easily form a good-looking food container, and it can be easily discarded without being bulky after use, and it can be easily manufactured at low cost, and it is formed using it. It is to provide a simple food container and a simple rug for food.

That is, according to the present invention, the following side gusset bag is provided.
[1] A side gusset bag that includes a pair of front surface portions , a pair of side surface portions that can be folded inside the front surface portion, and a bottom surface portion, and is used by opening the front surface portion and the side surface portions in a band shape. there have been folds by bending one material film is a heat seal layer is formed to have at least its inner surface the easy peel properties Rutotomoni, each inner surface edges to each other of the front portion and the side surface portion adjacent heat Four column seal portions bonded by a seal are formed , and at least three of the column seal portions are not separated from the raw material film at the fold, and the width of the column seal portion is 5 to 5. with a 15 mm, or heat-sealing strength of the pillar seal portion is 2~8N / 15mm, upper corner portion of the pillar seal portion is cut off, and It said post seal portion intermediate the side gusset bag notch is formed (hereinafter, referred to as "first side gusset bag").
[2 ] The side gusset bag according to [1 ], further including an adhesive portion disposed on at least one of the front portion and the side portion.

Moreover, according to this invention, the simple food container shown below is provided.
[ 3 ] Opening the four column seal portions of the side gusset bag according to [1] or [ 2] halfway in the direction from the upper end corner to the bottom portion, the front portion and the side portion. After cutting the upper part from the notch, the upper part was cut from the notch partway in the direction of the bottom face part, and the front part and the side part were each opened in a band form and opened in a band form. A simple food container formed by folding the front part and the side part outward from the bottom.

Furthermore, according to the present invention, the following simple rug for food is provided.
[8] Opening the four column seal portions of the side gusset bag according to the above [1] or [2] from the upper end corner portion to the lower end portion in the direction of the bottom surface portion, the front portion and the side portion. Each of which is opened in a band shape , or after the upper portion is cut off from the notch, the front portion and the side surface portion are opened in a band shape by cutting from the notch to the lower end in the direction of the bottom surface portion . Simple rug.

The 1st side gusset bag of this invention can open four front parts and a side part neatly in strip shape, respectively . Therefore, it is possible to easily form a good-looking food container that is used simply. Moreover, since it does not become bulky after use, it can be easily discarded, and it can be easily produced at low cost. And the simple food container and simple rug for food of this invention can be formed easily, and its appearance is also good. Moreover, since it does not become bulky after use, it can be easily discarded. Furthermore, since the simple food container and the simple food rug of the present invention are lighter than the relatively hard resin trays that are widely used, they are not only easy to dispose of, but also save raw materials (resource saving). Can also contribute.

It is a perspective view showing typically one embodiment of the 1st side gusset bag of the present invention. It is the A section enlarged view of FIG. It is a perspective view which shows typically other embodiment of the 1st side gusset bag of this invention. It is the B section enlarged view of FIG. It is a perspective view showing typically one embodiment of the 2nd side gusset bag. It is a perspective view showing other embodiments of the 2nd side gusset bag typically. It is a schematic diagram explaining the method of opening four side gusset bags shown in FIG. It is a perspective view showing typically one embodiment of the simple food container of the present invention. It is a perspective view which shows typically one Embodiment of the simple rug for foodstuffs of this invention.

One raw material film 5 constituting the first side gusset bag 10 is a heat seal layer having at least an inner surface having easy peel properties. Moreover, all the upper end corner | angular parts 15 of the column seal parts 12, 14, 16, and 18 are cut off linearly. In this manner, the upper end corner 15 of the column seal portions 12, 14, 16, 18 is cut off, so that the column seal portions 12, 14, 16, 18 are directed from the upper end corner 15 to the bottom portion. The front portions 2 and 4 and the side portions 6 and 8 can be opened in a strip shape (see FIG. 7). 1 and 2 show a state in which the upper end corner 15 is cut off in a straight line, the upper end corner of the column seal portion may be cut out in an R shape.

A notch 25 that is a triangular (V-shaped) notch is formed in the middle of the column seal portions 22, 24, 26, and 28. Thus, when the notch 25 is formed in the middle of the column seal portions 22, 24, 26, 28, after the upper portion is cut off from the notch 25 of the first side gusset bag 20, the column seal portions 22, 24, The front portions 2 and 4 and the side surface portions 6 and 8 can be respectively opened in a strip shape by cutting 26 and 28 linearly and cleanly from the respective notches 25 in the direction of the bottom surface portion .

In the first side gusset bag of the present invention, the width of the column seal portion is preferably 15 mm or less, more preferably 12 mm or less, particularly preferably 10 mm or less, and preferably 5 to 7 mm. Most preferred. The heat seal strength of the column seal portion is preferably 2 to 8 N / 15 mm, more preferably 2.5 to 7 N / 15 mm, particularly preferably 3 to 6 N / 15 mm, Most preferably, it is 5 N / 15 mm. By making the width of the column seal portion and the heat seal strength within the above ranges, it becomes easier to open the column seal portion linearly in the direction of the bottom surface starting from the cut off top corner and notch. . In addition, the heat seal strength of the column seal portion in the present specification is a value measured according to JIS-Z-0238.

(Second side gusset bag)
Next , the details of the second side gusset bag will be described. FIG. 5 is a perspective view schematically showing an embodiment of the second side gusset bag. As shown in FIG. 5, the second side gusset bag 30 of the present embodiment includes a pair of front portions 2 and 4 and a pair of side portions 6 and 8 that can be folded inside the front portions 2 and 4. The raw material film 5 having at least an inner surface as a heat seal layer is bent and configured. Adjacent front surface portions 2, 4 and side surface portions 6, 8 are bonded to the inner surface edges thereof, thereby forming four column seal portions 32, 34, 36, 38. In addition, adhesive portions 7a and 7b are disposed on the upper portion of the front portion 2.

The upper portions 32a of the column seal portions 32, 34, 36, and 38 are all bonded with a part coat agent. The lower portions 32b of the column seal portions 32, 34, 36, and 38 are all bonded by heat sealing. Moreover, all the upper end corner | angular parts 15 of the column seal | sticker part 32,34,36,38 are cut off linearly. In this manner, the upper corner portion 15 of the pillar seal portion 32, 34, 36 and 38 is cut off, the top 32a of the column seal portion 32, 34, 36 and 38, the bottom surface of each of the upper corner portion 15 The front portions 2 and 4 and the side portions 6 and 8 can be opened in a strip shape in a straight and clean manner in the direction of the portion. Further, the lower portions 32b of the column seal portions 32, 34, 36, and 38 are bonded by heat sealing having higher sealing strength than bonding by the part coat agent. Therefore, when it reaches the upper end of the lower 32b to open up the top 32a of the column seal portion 32, 34, 36 and 38 at regular forces, the seal strength changes (increases), the opening at the appropriate position Nature Can be stopped. In addition, in FIG. 5, although the state where the upper end corner | angular part 15 was cut off linearly is shown, the upper end corner | angular part of a pillar seal part may be cut off into R shape.

FIG. 6 is a perspective view schematically showing another embodiment of the second side gusset bag. As shown in FIG. 6, the second side gusset bag 40 of the present embodiment is similar to the second side gusset bag 30 shown in FIG. 5. 4 is provided with a pair of side surface parts 6 and 8 that can be folded inside. The second side gusset bag 40 is formed by folding a single raw film 5 having at least an inner surface as a heat seal layer. And the inner surface edge of each of the adjacent front parts 2 and 4 and the side parts 6 and 8 is adhere | attached, The four pillar seal parts 42, 44, 46, and 48 are formed by this. In addition, the adhesive part 7 is arrange | positioned at the upper part of the front part 2. As shown in FIG.

The upper portions 42a of the column seal portions 42, 44, 46, and 48 are all bonded with a part coat agent. The lower portions 42b of the column seal portions 42, 44, 46, and 48 are all bonded by heat sealing. Further, a notch 25 that is a triangular (V-shaped) notch is formed in the middle of the column seal portions 42, 44, 46, and 48. Thus, when the notch 25 is formed in the middle of the column seal portions 42, 44, 46, 48, after the upper portion is cut off from the notch 25 of the second side gusset bag 40, the column seal portions 42, 44, 46 and 48 can be opened linearly and cleanly from the respective notches 25 in the direction of the bottom surface , and the front portions 2 and 4 and the side portions 6 and 8 can be opened in a strip shape .

Further, the lower portions 42b of the column seal portions 42, 44, 46, and 48 are bonded by heat sealing having higher sealing strength than bonding by the part coat agent. Therefore, when it reaches the upper end of the lower 42b to open up the top 42a of the column seal portion 42, 44, 46, 48 at regular forces, the seal strength changes (increases), the opening at the appropriate position Nature Can be stopped.

In the second side gusset bag, the width of the column seal portion is preferably 15 mm or less, more preferably 12 mm or less, particularly preferably 10 mm or less, and most preferably 5 to 7 mm. And it is preferable that the heat seal intensity | strength of the lower part of a column seal part is 9 N / 15mm or more, and it is preferable that the seal | sticker intensity | strength of an upper part is lower than the heat seal intensity | strength of a lower part. By setting the relationship between the width of the column seal part, the heat seal strength at the bottom of the column seal part, and the seal strength at the top and bottom of the column seal part as described above, the cut off upper end corner and notch It becomes easier to linearly open in the direction of the bottom surface as a starting point, and can be more easily stopped at the lower upper end where the seal strength changes (increases). In addition, when the film made from a linear low density polyethylene (LLDPE) is used as a raw material film, the heat seal intensity | strength of the lower part of a pillar seal part will be about 100-170 N / 15mm. When a non-stretched polypropylene (CPP) film is used as the raw material film, the heat seal strength of the lower part of the column seal portion is about 9 to 25 N / 15 mm.

In the side gusset bag of the present invention, among the four column seal portions, three column seal portions are in a state in which the raw material film is bent, and the raw material film is not cut off. For this reason, for example, unlike a gusset bag obtained by combining four films and heat-sealing as described in Patent Document 2, when a slight impact is applied while the contents are accommodated, Even if it exists, the column seal portion is not easily broken and the contents are not easily leaked to the outside. In addition, when the outer part along the column axis direction of the column seal is cut off, it becomes easier to cut open from the upper end corner portion or the notch toward the bottom surface portion . However, when considering the impact resistance (preventing leakage of contents), it is preferable not to cut off the outer portion along the column axis direction of the column seal . Na us, may be sealed bottom to be a general Funesoko as shown in FIGS. 1, 3, 5 and 7 may be sealed to the bottom so that Sumisoko.

Next, as shown in FIG. 7, the column seal portions 12, 14, 16, and 18 are linearly cut from the upper end corner portion 15 toward the bottom surface portion . Thereby, the front parts 2 and 4 and the side parts 6 and 8 can each be opened in strip shape. 3 and 6, in the case of a side gusset bag in which a notch is formed in the middle of the column seal portion, the column seal portion may be cut linearly from the notch to the bottom surface portion .

The four pillars seal portion of the first side gusset bag thus prepared was cut open from the respective upper corner portion in the direction of the bottom portion, to a position of about 1/4 from the bottom surface portion. As a result, it was possible to cleanly and linearly open any of the pillar seal portions. Moreover, it was able to be set as the simple food container of a structure as shown in FIG. 8 by folding up the front part and side part which were opened by strip | belt shape each to the bottom surface outer side. On the other hand, the four pillars seal portion of the first side gusset bag thus prepared was cut open from the respective upper corner portion in the direction of the bottom surface, to the bottom surface portion (the lower end). As a result, it was possible to cut straight and cleanly in any pillar seal portion, and a simple rug for food having a configuration as shown in FIG. 9 could be obtained.

(Example 2)
Biaxially stretched polypropylene film (trade name “Trephan BO YT42”, manufactured by Toray Film Processing Co., Ltd., thickness: 25 μm) as a base material, polypropylene resin film (trade name “CF film 9501A”, Toray Film Processing Co., Ltd.) A laminate film of a dry laminate having a heat seal layer as a heat seal layer was used as a raw material film, and a side gusset bag at the bottom of a boat was obtained using a vertical bag making machine. A notch is formed in a triangle (V shape) in the middle of the four column seals of the obtained side gusset bag at the bottom of the boat, and a first side gusset bag having a configuration as shown in FIGS. 3 and 4 is produced. did. In addition, the heat seal strength of the column seal portion was about 2 to 4 N / 15 mm. After disconnecting from the first side gusset bag notch to produce a top, the four pillars seal portion was cut open from the respective notches in the direction of the bottom portion, to a position of about 1/4 from the bottom surface portion. As a result, it was possible to cleanly and linearly open any of the pillar seal portions. Moreover, it was able to be set as the simple food container of a structure as shown in FIG. 8 by folding up the front part and side part which were opened by strip | belt shape each to the bottom surface outer side. Meanwhile, after disconnecting above the notches, the four pillars seal portion was cut open from the respective notches in the direction of the bottom portion, to the bottom surface portion (the lower end). As a result, it was possible to cut straight and cleanly in any pillar seal portion, and a simple rug for food having a configuration as shown in FIG. 9 could be obtained.

(2) Second side gusset bag ( Reference Example 3)
A laminated film with a biaxially stretched polypropylene film (thickness: 20 μm) as the base material and a non-stretched polypropylene film (thickness: 20 μm) as the heat seal layer is used as the raw material film, and a vertical bag making machine is used. I got a side gusset bag at the bottom of the boat. For the four column seals, the upper part was coated with a part coat agent (trade name “PP66 Seal SC”, manufactured by Toyo Ink Co., Ltd.) at a plate depth of 60 μm and thermally bonded, and the lower part was bonded by heat sealing. The upper side corners of the four column seal portions of the obtained boat bottom side gusset bag were cut off obliquely to produce a second side gusset bag having a configuration as shown in FIG. The upper seal strength of the column seal portion was about 3.2 to 4 N / 15 mm, and the lower heat seal strength was about 10 N / 15 mm.

The four column seal portions of the manufactured second side gusset bag were cut open from the respective upper end corners to the bottom surface portion to the lower upper end of the column seal. As a result, it was possible to cleanly and linearly open any of the pillar seal portions. Moreover, it was able to be set as the simple food container of a structure as shown in FIG. 8 by folding up the front part and side part which were opened by strip | belt shape each to the bottom surface outer side.

( Reference Example 4)
Stretched nylon film (trade name “Emblem NC”, manufactured by Unitika, thickness: 15 μm) as a base material, linear low density polyethylene (LLDPE) film (TUX MC-S, Mitsui Chemicals, Inc.) A laminated film obtained by laminating them by polyethylene extrusion lamination was used as a raw material film, and a side gusset bag at the bottom of the boat was obtained using a bag making machine. For the four column seals, the upper part was coated with a part coat agent (trade name “PP66 Seal SC”, manufactured by Toyo Ink Co., Ltd.) at a plate depth of 60 μm and thermally bonded, and the lower part was bonded by heat sealing. A notch was formed in a triangle (V-shaped) in the middle of the four pillar seal portions of the obtained boat side gusset bag to produce a second side gusset bag having a configuration as shown in FIG. The upper seal strength of the column seal portion was about 3.2 to 5.2 N / 15 mm, and the lower heat seal strength was about 100 N / 15 mm.

After the upper part was cut off from the notch of the produced second side gusset bag, the four column seal portions were cut open from the respective notches toward the bottom portion to the lower upper end of the column seal. As a result, it was possible to cleanly and linearly open any of the pillar seal portions. Moreover, it was able to be set as the simple food container of a structure as shown in FIG. 8 by folding up the front part and side part which were opened by strip | belt shape each to the bottom surface outer side.

  The present invention relates to a side gusset bag suitable for packaging foods, etc., and a simple food container and a simple food rug formed using the side gusset bag.

  Conventionally, a relatively hard resin tray has been used as a packaging means for storing food such as side dishes and rice balls. Such a resin tray is used as it is on a dining table as a simple plate or bowl on which food is placed, or is discarded after the food inside is moved to normal tableware. However, such resin trays have various shapes and dimensions and are bulky, so that it is difficult to store them in general households until they are discarded, and the volume of waste increases. There's a problem.

  On the other hand, as a packaging means for storing food, there is a packaging bag such as a side gusset bag made of a relatively thin resin film. Since the packaging bag made of such a resin film can be easily reduced in volume by being folded after use, etc., it is easy to store until it is discarded compared to the resin tray, It is possible to reduce the volume of waste.

  As such a packaging bag, for example, an easy-open packaging bag in which a laminated film composed of a linear cut film and a heat-fusible film is heat-sealed to form a bag has been proposed (for example, a patent). Reference 1). This packaging bag has a heat-bonding part that is easily peelable and has a non-adhesive part between the film edge. Then, both corners of the non-adhesive part are cut, and the cut part can be opened from the non-adhesive part along the fold line as a band opening start point.

  Further, a gusset bag composed of four laminated films in which a base material layer and an easy peel sealant layer are laminated and formed by heat-sealing the sealant layers of the four laminated films together has been proposed. (For example, refer to Patent Document 2). The gusset bag can be easily opened and can be kept stable on a table or the like after opening.

JP 2004-26169 A JP 2006-199337 A

  However, it is practically difficult to open the packaging bag proposed in Patent Document 1 straight along the folding line. In particular, when the length to be opened is long, it is gradually shifted and torn, so it cannot be said that the appearance after opening is good. For this reason, it was difficult to use as it is as a container after opening.

Moreover, since the gusset bag proposed in Patent Document 2 is manufactured by heat-sealing four films, the manufacturing process becomes extremely complicated. For this reason, the manufacturing cost is expensive, and it cannot be said that it is practical as a simple packaging means or food container that is manufactured in large quantities and discarded after use.

  The present invention has been made in view of such problems of the prior art, and the problem is that the present invention can be used simply by opening the front part and the side part into four strips. It is possible to easily form a good-looking food container, and it can be easily discarded without being bulky after use, and it can be easily manufactured at low cost, and it is formed using it. It is to provide a simple food container and a simple rug for food.

That is, according to the present invention, the following side gusset bag is provided.
[1] A side gusset bag that includes a pair of front surface portions, a pair of side surface portions that can be folded inside the front surface portion, and a bottom surface portion, and is used by opening the front surface portion and the side surface portions in a band shape. In addition, at least the inner surface of the raw material film, which is a heat seal layer having an easy peel property, is folded to form a crease, and the inner edge of each of the adjacent front portion and side portion is heated. Four column seal portions bonded by a seal are formed, and at least three of the column seal portions are not separated from the raw material film at the fold, and the width of the column seal portion is 5 to 5. 15 mm, and the heat seal strength of the column seal portion measured in accordance with JIS-Z-0238 is 2 to 8 N / 15 mm. A side gusset bag in which an upper end corner portion of the lug portion is cut off or a notch is formed in the middle of the column seal portion .
[2] The side gusset bag according to [1], further including an adhesive portion disposed on at least one of the front portion and the side portion.

Moreover, according to this invention, the simple food container shown below is provided.
[3] Opening the four column seal portions of the side gusset bag according to [1] or [2] halfway in the direction from the upper end corner to the bottom portion, the front portion and the side portion. After cutting the upper part from the notch, the upper part was cut from the notch partway in the direction of the bottom face part, and the front part and the side part were each opened in a band form and opened in a band form. A simple food container formed by folding the front part and the side part outward from the bottom.

Furthermore, according to the present invention, the following simple rug for food is provided.
[ 4 ] The front part and the side part are formed by cutting the four column seal parts of the side gusset bag according to [1] or [2] from the upper end corner part to the lower end part in the direction of the bottom part. Each of which is opened in a band shape, or after the upper portion is cut off from the notch, the front portion and the side surface portion are opened in a band shape by cutting from the notch to the lower end in the direction of the bottom surface portion. Simple rug.

Sa Idogasetto bag of the present invention can be opened cleanly four to strip the front and side portions, respectively. Therefore, it is possible to easily form a good-looking food container that is used simply. Moreover, since it does not become bulky after use, it can be easily discarded, and it can be easily produced at low cost. And the simple food container and simple rug for food of this invention can be formed easily, and its appearance is also good. Moreover, since it does not become bulky after use, it can be easily discarded. Furthermore, since the simple food container and the simple food rug of the present invention are lighter than the relatively hard resin trays that are widely used, they are not only easy to dispose of, but also save raw materials (resource saving). Can also contribute.

One embodiment of the support Idogasetto bag of the present invention is a perspective view schematically showing. It is the A section enlarged view of FIG. Another embodiment of the support Idogasetto bag of the present invention is a perspective view schematically showing. It is the B section enlarged view of FIG. It is a schematic diagram explaining the method of opening four side gusset bags shown in FIG. It is a perspective view showing typically one embodiment of the simple food container of the present invention. It is a perspective view which shows typically one Embodiment of the simple rug for foodstuffs of this invention.

Embodiments of the present invention will be described below, but the present invention is not limited to the following embodiments .

(Sa Idogasetto bag)
It will be described in detail support Idogasetto bag of the present invention. Figure 1 is a perspective view schematically showing an embodiment of a support Idogasetto bag of the present invention. FIG. 2 is an enlarged view of a portion A in FIG. As shown in FIG. 1 and 2, support Idogasetto bag 10 of the present embodiment includes a pair of front portions 2,4, and a pair of side portions 6 and 8 inside the possible folding of the front portion 2 and 4 A single raw material film 5 is bent and configured. Adjacent front edges 2 and 4 and side faces 6 and 8 are bonded to each other at their inner edges by heat sealing, thereby forming four column seal parts 12, 14, 16 and 18. Further, on the upper portion of the front portion 2, adhesive portions 7a and 7b whose surfaces are protected by, for example, release paper are disposed. In addition, the adhesion part may be arrange | positioned only in one place, and may be arrange | positioned in multiple places as shown in FIG. Furthermore, the adhesion part may be arrange | positioned on the surface of the front part, and may be arrange | positioned on the back surface.

Single material film constituting the support Idogasetto bag 105 is heat seal layer having at least its inner surface the easy peel properties. Moreover, all the upper end corner | angular parts 15 of the column seal parts 12, 14, 16, and 18 are cut off linearly. In this manner, the upper end corner 15 of the column seal portions 12, 14, 16, 18 is cut off, so that the column seal portions 12, 14, 16, 18 are directed from the upper end corner 15 to the bottom portion. The front portions 2 and 4 and the side portions 6 and 8 can be opened in a strip shape (see FIG. 7). 1 and 2 show a state in which the upper end corner 15 is cut off in a straight line, the upper end corner of the column seal portion may be cut out in an R shape.

Figure 3 is a perspective view of another embodiment of a support Idogasetto bag of the present invention is shown schematically. FIG. 4 is an enlarged view of a portion B in FIG. 3 and 4, support Idogasetto bag 20 of this embodiment, like the shown to support Idogasetto bag 10 in FIG. 1, a pair of front portions 2,4, inside these front portions 2,4 It is provided with a pair of side surface parts 6 and 8 that can be folded. Further, this service Idogasetto bag 20 is composed of at least an inner surface thereof by bending one sheet of film material 5 is a heat seal layer having easy peel properties. And the inner surface edge of each of the adjacent front parts 2 and 4 and the side parts 6 and 8 is adhere | attached by the heat seal, and, thereby, the four pillar seal parts 22, 24, 26, and 28 are formed. . In addition, the adhesive part 7 is arrange | positioned at the upper part of the front part 2. As shown in FIG.

A notch 25 that is a triangular (V-shaped) notch is formed in the middle of the column seal portions 22, 24, 26, and 28. Thus, when the intermediate notch 25 of the pillar seal portion 22, 24, 26, 28 are formed, after disconnecting above the notches 25 of the support Idogasetto bag 20, the pillar seal portion 22, 24, 26, 28 Can be cut straight and cleanly from the respective notches 25 in the direction of the bottom surface to open the front portions 2 and 4 and the side portions 6 and 8 in a band shape.

Sa Idogasetto bag of the present invention preferably has a width of the pillar seal portion is 15mm or less, still more preferably 12mm or less, particularly preferably at most 10mm or less, most preferably 5 to 7 mm. The heat seal strength of the column seal portion is preferably 2 to 8 N / 15 mm, more preferably 2.5 to 7 N / 15 mm, particularly preferably 3 to 6 N / 15 mm, Most preferably, it is 5 N / 15 mm. By making the width of the column seal portion and the heat seal strength within the above ranges, it becomes easier to open the column seal portion linearly in the direction of the bottom surface starting from the cut off top corner and notch. . In addition, the heat seal strength of the column seal portion in the present specification is a value measured according to JIS-Z-0238.

(Raw material film)
Raw film constituting the support Idogasetto bags, as long as at least the inner surface thereof is heat seal layer having easy peel properties. The raw material film, for example, a substrate, a film (i.e., laminated film) having a heat seal layer disposed on one surface of the substrate and consists of only a heat seal layer film (i.e. single Layer film) and the like can be used. In addition, the bonding of the base material constituting the laminated film and the heat seal layer may be dry lamination, extrusion lamination, or bonding by other methods.

  The side gusset bag of the present invention does not become bulky after use, unlike a relatively hard resin tray that is widely used. Further, since it is lighter than a resin tray, it can be easily discarded and can contribute to saving of raw materials (resource saving). Furthermore, since the side gusset bag of the present invention is composed of a single raw material film, it can be easily manufactured as compared with the gusset bag described in Patent Document 2 and the like. For this reason, it is expected to reduce the cost required for bag making processing to about 1/3 to 1/5. Further, the side gusset bag of the present invention can be manufactured according to a conventionally known method for manufacturing a side gusset bag in which a bag is made while pulling out a long raw material film wound in a roll shape. From the viewpoint of ease of manufacture, the so-called vertical bag making machine is preferable because it is more prevalent than the so-called horizontal bag making machine.

In the side gusset bag of the present invention, among the four column seal portions, three column seal portions are in a state in which the raw material film is bent, and the raw material film is not cut off. For this reason, for example, unlike a gusset bag obtained by combining four films and heat-sealing as described in Patent Document 2, when a slight impact is applied while the contents are accommodated, Even if it exists, the column seal portion is not easily broken and the contents are not easily leaked to the outside. In addition, when the outer part along the column axis direction of the column seal is cut off, it becomes easier to cut open from the upper end corner portion or the notch toward the bottom surface portion. However, when considering the impact resistance (preventing leakage of contents), it is preferable not to cut off the outer portion along the column axis direction of the column seal. Incidentally, FIG. 1 and 3 may be sealed bottom to be a general Funesoko as shown in 及 beauty 5 may be sealed to the bottom so that Sumisoko.

  Specific examples of the substrate include the following trade names, such as Trefan BO YT42 (manufactured by Toray Industries, Inc.), Karariyan YA2 (manufactured by Denki Kagaku Kogyo Co., Ltd.), and the like; Film for horizontal cutting having longitudinal linear cut properties such as Unitika Ltd., Emblet PC (Unitika Ltd.), Uniathlon TB (Idemitsu Unitech Ltd.), Nobrene ASCM (Mitsui Chemicals Ltd.); OP U-1 ( Mitsui Chemicals Tosero Co., Ltd., FOR (Futamura Chemical Co., Ltd.), Cellophane PL (Futamura Chemical Co., Ltd.), Cellophane G (Futamura Chemical Co., Ltd.), E5100 (Toyobo Co., Ltd.), N1100 (Toyobo Co., Ltd.), etc. Can be mentioned.

  Specific examples of the heat-seal layer having an easy peel property (for laminated film) are as follows. A. Examples thereof include F 650C (manufactured by Mitsui Chemicals Tosero Co., Ltd.), CF film (manufactured by Toray Film Processing Co., Ltd.), IMX film (manufactured by J Film Co., Ltd.), and differential E7300T (manufactured by DIC). Specific examples of the heat seal layer having an easy peel property (for a single layer film) include FOLD-H (manufactured by Phutamura Chemical Co., Ltd.), ES1 (manufactured by Gunze Co., Ltd.) and the like under the following trade names.

(How to use side gusset bags)
Next, how to use the side gusset bag of the present invention will be described as an example shown to support Idogasetto bag 10 in FIGS. 1 and 5. To use the service Idogasetto bag 10 is, first of all, meat and potatoes, boiled mackerel miso, potato salad, bite cutlet and shredded cabbage, sashimi platter, side dish such as a salad platter; cut vegetables; foods such as sandwiches, cut fruit, rice balls From the opening. Then, the opening is sealed by heat-sealing the seal portion 3 or the like, or the food is accommodated inside by simply bending the upper portion or the like. Such an operation is easily carried out, for example, at a food factory or a side dish of a retail store .

When taking out the food contained in the interior of the sub Idogasetto bag 10, when the opening is heat sealed, the knob opening by hand, may be opened by force. Moreover, when the upper part is bent, it is only necessary to release the bending. In the case of a side gusset bag as shown in FIG. 3 in which a notch is formed in the middle of the column seal portion, it can be easily opened by separating the upper portion from the notch.

Next, as shown in FIG. 5 , the column seal portions 12, 14, 16, and 18 are linearly cut from the upper end corner portion 15 toward the bottom surface portion. Thereby, the front parts 2 and 4 and the side parts 6 and 8 can each be opened in strip shape. In the case of a side gusset bag as shown in FIG. 3 in which a notch is formed in the middle of the column seal portion, the column seal portion may be cut linearly in the direction from the notch to the bottom surface portion.

When the food stored in the interior is a low-moisture food such as a rice ball or sandwich, the column seal portions 12, 14, 16, and 18 may be cut open to the lower end. A simple food rug 60 (folded fold) as shown in FIG. 7 can be formed by opening the column seal portions 12, 14, 16, 18 to the lower end. In addition, the code | symbol 55 in FIG. 7 shows the bottom face part of the simple rug 60 for foodstuffs. On the other hand, when the food accommodated in the inside is a side dish or the like containing a lot of moisture, it is preferable to open the column seal portions 12, 14, 16, and 18 halfway. It is possible to prevent moisture from leaking out by cutting halfway (that is, not cutting to the lower end).

After cut open pillar seal portion 12, 14, 16, 18 halfway, by folding the front portion 2, 4 and side portions 6 and 8 which is open four in unsealed strip outside the bottom 45, in FIG. 6 A simple food container 50 as shown can be formed. When the adhesive portions 7a and 7b as shown in FIG. 1 are arranged on the upper portion of the front portion 2, the belt-like front portions 2 and 4 folded back to the outer bottom surface 45 by the adhesive portions 7a and 7b and The side parts 6 and 8 can be fixed. By fixing with the adhesive portions 7a and 7b, even if the food of the contents gradually decreases, it is difficult to turn over, and a stable container can be obtained. It is also possible to make it easier to place a plurality of containers side by side.

  EXAMPLES Hereinafter, although this invention is demonstrated concretely based on an Example, this invention is not limited to these Examples.

(Example 1)
Biaxially stretched polypropylene film (trade name “OP U-1”, manufactured by Mitsui Chemicals, Inc., thickness: 25 μm) as a base material, polypropylene resin film (trade name “TAF 650C”, Mitsui Using a laminated film of a dry laminate having a heat seal layer made by Kagaku Tosero Co., Ltd. (thickness: 30 μm) as a raw material film, a side gusset bag at the bottom of the boat was obtained using a vertical bag making machine. The upper corners of the four pillars seal portion of the side gusset bag of the resulting boat bottom cut off obliquely, to produce a structure of sub Idogasetto bag as shown in Figures 1 and 2. In addition, the heat seal strength of the column seal part was about 2.8 to 3.5 N / 15 mm.

The four pillars seal portion Sa Idogasetto bag prepared, cut open from the respective upper corner portion in the direction of the bottom portion, to a position of about 1/4 from the bottom portion. As a result, it was possible to cleanly and linearly open any of the pillar seal portions. In addition, by folding the front portion has been opened in a strip and the side part outside the bottom, respectively, it could be a simple food containers having a configuration as shown in FIG. On the other hand, the four pillars seal portion Sa Idogasetto bag prepared, cut open from the respective upper corner portion in the direction of the bottom surface, the bottom surface portion (the lower end). As a result, it was possible to cut straight and cleanly in any pillar seal portion, and a simple rug for food having a configuration as shown in FIG. 7 could be obtained.

(Example 2)
Biaxially stretched polypropylene film (trade name “Trephan BO YT42”, manufactured by Toray Film Processing Co., Ltd., thickness: 25 μm) as a base material, polypropylene resin film (trade name “CF film 9501A”, Toray Film Processing Co., Ltd.) A laminate film of a dry laminate having a heat seal layer as a heat seal layer was used as a raw material film, and a side gusset bag at the bottom of a boat was obtained using a vertical bag making machine. Obtained by forming a Bruno pitch triangular (V-shaped) in the middle of the four pillars seal portion of the boat bottom side gusset bags were prepared the structure of sub Idogasetto bag as shown in Figures 3 and 4. In addition, the heat seal strength of the column seal portion was about 2 to 4 N / 15 mm. After disconnecting from the notch of the support Idogasetto bag to prepare a top, the four pillars seal portion was cut open from the respective notches in the direction of the bottom portion, to a position of about 1/4 from the bottom portion. As a result, it was possible to cleanly and linearly open any of the pillar seal portions. In addition, by folding the front portion has been opened in a strip and the side part outside the bottom, respectively, it could be a simple food containers having a configuration as shown in FIG. On the other hand, after the upper part was cut off from the notches, the four column seal parts were cut open from the respective notches to the bottom part (lower end) in the direction of the bottom part. As a result, it was possible to cut straight and cleanly in any pillar seal portion, and a simple rug for food having a configuration as shown in FIG. 7 could be obtained.

  The side gusset bag of the present invention can easily package foods such as side dishes, cut vegetables, cut fruits, rice balls, sandwiches and the like, and can be used as a food container after being opened.

2,4: Front portion 3: sealing part 5: film material 6,8: side portion 7, 7a, 7b: adhesive portion 10, 20: support Idogasetto bag 11: the fold 12, 14, 16, 18: column seal 15 : the upper corner portion 22, 24, 26, 28: pillar seal section 25: notch
4 5: Bottom outside 50: Simple food container 55: Bottom portion 60: Simple rug for food

Claims (8)

A side gusset bag comprising a pair of front portions and a pair of side portions that can be folded inside the front portion,
Four column seals in which at least one inner surface of the raw film, which is a heat seal layer having an easy peel property, is folded and the inner edge of each of the adjacent front and side portions is bonded by heat seal Part is formed,
A side gusset bag in which an upper end corner portion of the column seal portion is cut off or a notch is formed in the middle of the column seal portion. The column seal portion has a width of 5 to 7 mm,
The side gusset bag according to claim 1, wherein a heat seal strength of the column seal portion measured in accordance with JIS-Z-0238 is 2 to 8 N / 15 mm. A side gusset bag comprising a pair of front portions and a pair of side portions that can be folded inside the front portion,
At least one raw material film whose inner surface is a heat seal layer is folded, and four column seal portions are formed in which the inner surface edges of the adjacent front surface portion and side surface portion are bonded to each other,
The upper part of the column seal part is bonded by a part coat agent, and the lower part of the column seal part is bonded by heat sealing,
The side gusset bag in which the upper end corner of the upper part of the pillar seal part is cut off or a notch is formed in the middle of the upper part of the pillar seal part. The column seal portion has a width of 5 to 7 mm,
The heat seal strength of the lower part of the column seal part measured in accordance with JIS-Z-0238 is 9 N / 15 mm or more,
The side gusset bag according to claim 3, wherein a seal strength at an upper portion of the column seal portion is lower than a heat seal strength at a lower portion of the column seal portion.   The side gusset bag according to claim 3 or 4, wherein an outer portion along the column axis direction of the column seal is cut off.   The side gusset bag as described in any one of Claims 1-5 further provided with the adhesion part arrange | positioned at the upper part of at least any one of the said front part and the said side part. The four pillar seal portions of the side gusset bag according to any one of claims 1 to 6, wherein the front portion and the side portion are each strip-shaped by cutting open from the upper end corner portion to the middle along the crease. Or after cutting off the upper part from the notch, the front part and the side part are each opened in a strip shape by cutting open partway along the crease from the notch,
A simple food container formed by folding the front part and the side part opened in a band shape outward from the bottom. The four column seal portions of the side gusset bag according to claim 1 or 2 are cut open from the respective upper end corner portions to the lower end along the folds, and the front portion and the side portion are each opened in a band shape, Or the simple rug for foods formed by cutting off the upper part from the notch and then opening it from the notch to the lower end along the crease and opening the front part and the side part in a band shape.

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