JP7136539B2 - Gusset bag for miso storage - Google Patents

Description

TECHNICAL FIELD The present invention relates to a packaging bag for packaging (storing) miso, which is a highly viscous semisolid, and more specifically, a packaging bag for storing miso with gussets on both left and right sides (so-called gusset bag). It is about.

As a container for storing miso, which is a highly viscous semisolid, for a long period of time, a synthetic resin case with a lid is often used from the viewpoint of ease of storage and ease of removal. Moreover, as a miso container, a case made of a transparent synthetic resin is often used so that the state of the contents can be checked (Patent Document 1).

Japanese Utility Model Laid-Open No. 7-26392

However, the conventional storage container for miso, such as the one disclosed in Patent Document 1, requires not only the case main body and the lid body, but also the opening of the case main body to seal the inside in order to fill the contents and display them. of sealing members are required. In addition, in order to display the product name and properties of the contents, it is necessary to separately create a seal or the like indicating these and attach it to the case. Therefore, it is difficult to package the conventional container for miso at a low cost because the number of members required for packaging is large.

An object of the present invention is to solve the above-mentioned problems of conventional storage containers, to enable easy packaging (storage) and takeout of miso, which is a highly viscous semi-solid, and to package miso at low cost. To provide a gusset bag for storing bean paste, which can be stably erected in a state in which bean paste is stored, and which can be easily stored in a refrigerator.

Among the present inventions, the invention described in claim 1 is a bag-shaped storage container for miso, which is formed in the shape of a bag with folding materials sandwiched between the left and right sides and the lower side of the two front and back sides of the body material made of synthetic resin film. In the gusset bag, the outer periphery of the lower folding member is heat-sealed to the lower ends of the front and back panel members and to the lower ends of the left and right panel members, and the left and right edges of the front panel member. Nearly the entire front edges of the left and right folding members are heat-sealed, and substantially the entire left and right edges of the back panel material are heat-sealed to the left and right folding members. The thickness of the synthetic resin film which is heat-sealed at the edge of the rear side and which constitutes the front and back panel material, the left and right sides, and the lower side panel material is 70 μm or more and 140 μm or less, and the thickness of the front and back panel material is 70 μm or more and 140 μm or less. When the ratio of the width b of each left and right folding material to the width a of the left and right folding members is 0.6 or more and less than 1.0, and the interior is filled with miso, the filling with respect to the left and right width a of the front and back panels The ratio of the height m of the filled miso is 0.7 or more and 1.5 or less, and the expected opening position, which is the position to be opened, is printed above the upper surface of the miso to be filled , and the expected opening position is printed. Positions are printed circumferentially across the front and back panel materials and left and right folded parts, and each of the left and right folded parts thermally bonds a multilayer film having a thermal adhesive layer on one side. It is folded in two so that the layers face outward. At the center of the upper edge, the front and back panels are heat-sealed at a certain height. The panel material is heat-sealed to the outer surfaces of the opposite left and right folding members at a certain height, and the inner surfaces of the left and right folding members are not heat-sealed and are separated from each other. It is characterized by

The invention described in claim 2 is the invention described in claim 1 , wherein the synthetic resin films constituting the front and back panel materials, the left and right sides, and the lower folding materials are all PET (polyethylene terephthalate) layers. It is characterized by being a laminated film containing

The invention described in claim 3 is the invention described in claim 1 or claim 2 , wherein the synthetic resin films constituting the front and back panel materials, the left and right sides, and the lower folding material are all gas barrier It is characterized by having

The gusset bag for storing miso according to claim 1 can easily store (fill) miso, which is a highly viscous semisolid, from an opening that opens wide at the top (discharge miso). It is possible to store nozzles etc. that do not get caught). Moreover, it can be easily sealed by heat-sealing the upper edge. In addition, since the synthetic resin film of a predetermined thickness is formed into a bag shape (gusset shape) with folded portions on the left and right sides and the bottom portion, when the miso is filled, the filling portion becomes a substantially rectangular parallelepiped shape and stands up in a stable state. It can be stored efficiently in a small space in a store or in a refrigerator. Furthermore, when the miso is filled, the folded part of the bottom expands to form a rectangular bottom surface, so that the miso can be scraped out without leaving any residue. In addition, since the product name and properties of the contents can be printed on the surfaces of the body material and the folding material, packaging can be done at low cost with a small number of parts.

In the gusseted bag for storing miso according to claim 2 , the synthetic resin film constituting the core material and the folding material is a laminated film containing a PET layer, so that the core material and the folding material have high strength and excellent water resistance. Therefore, miso can be stored for an extremely long period of time. In addition, because of its excellent dimensional stability, it is possible to produce bags with a high yield when continuously producing bags from a roll-shaped film in a bag-making machine.

In the storage container for miso according to claim 3 , the synthetic resin film constituting the body material and the folding material has gas barrier properties, so that the quality of miso can be maintained for a long period of time.

FIG. 2 is an explanatory view showing a gusseted bag for storing miso (a is a front view, b is an end view along line AA in a, and c is an end view along line BB in a). Fig. 10 is an explanatory view (perspective view) showing a gusset bag for storing miso in which miso is filled and sealed. Fig. 2 is an explanatory view (left side view) showing a miso-storing gusset bag filled with and sealed with miso. FIG. 2 is an explanatory view showing the left and right folding members and the bottom folding member for forming the miso storage gusset bag (a is a front view, b is an end view of the left side near the lower end of the left folding member (that is, , a in the direction of arrow C), and c is a perspective view of a state in which the left folding member and the bottom folding member are separated). FIG. 10 is an explanatory view (perspective view) showing the state of use of the miso storage gusset bag (state filled with miso) (the right view shows the opened state at the intended opening position). It is explanatory drawing which shows the example of a change of a folding material (a is a front view, b is a left side view of the broken line part in a).

An embodiment of a gusseted miso storage bag according to the present invention will be described in detail below. A gusset bag for miso according to the present invention is made of a flexible synthetic resin film. The term "synthetic resin film" as used herein refers to a laminated film obtained by laminating synthetic resin films, a laminated film obtained by laminating a synthetic resin film with paper, aluminum foil, or the like, a co-extruded film, or the like. At least one surface (inner surface) of the synthetic resin film used for the miso storage gusset bag must have heat adhesiveness (thermal fusion bondability). Moreover, it is preferable that the miso storage gusset bag has a gas barrier property in order to maintain the quality of the miso. Specifically, the oxygen permeability at 20° C. and 65% RH is preferably 20 cc/m ² ·day·atm or less, more preferably 10 cc/m ² ·day·atm or less, and 1 cc/m ² ·day. - It is more preferable that it is atm or less.

As such a synthetic resin film, for example, a multilayer film including a barrier layer and a thermal adhesive layer can be used. The barrier layer is an ethylene-vinyl alcohol copolymer film, and the barrier layer is an ethylene-vinyl alcohol copolymer film, or an ethylene-vinyl alcohol copolymer film or a poly-meta-xylylene adipamide film with nylon or the like. Mention may be made of coextruded films. In addition, films such as polyester vapor-deposited with silicon oxide (silica) or aluminum oxide (alumina), or films such as polyester or nylon vapor-deposited with aluminum foil or aluminum may be used. As the thermoadhesive layer, for example, a film such as polyethylene or unstretched polypropylene can be used.

Further, in the miso storage gusset bag according to the present invention, it is preferable that the synthetic resin films, which are the constituent members (the front and back panel members, the left and right sides and the lower folding members), are all laminated films containing a PET layer. When the base layer (or base film) other than the heat-adhesive layer of the synthetic resin film is a laminate of a PET layer on the outside of the nylon layer, the strength of nylon and the waterproofness and dimensional stability of PET are simultaneously exhibited. It is more preferable because the miso storage gusset bag is suitable for storing miso. More preferred specific examples of such a synthetic resin film include the following laminated films (note that, if necessary, a film made of another resin may be sandwiched or laminated in the laminated films below). is also possible).
a. A laminate film obtained by laminating a biaxially oriented nylon film laminated with PET, an ethylene-vinyl alcohol copolymer film, and a linear low-density polyethylene film b. A laminated film obtained by laminating a PET film, a coextruded film of nylon and poly-meta-xylylene adipamide, or a linear low-density polyethylene film. c. A laminated film obtained by laminating a PET film, a coextruded film of nylon and an ethylene-vinyl alcohol copolymer, or a linear low-density polyethylene film d. Laminated film obtained by laminating silicon oxide-deposited PET film, nylon film, and linear low-density polyethylene film e. Laminated film obtained by laminating aluminum oxide-deposited PET film, nylon film, and linear low-density polyethylene film f. Laminated film made by laminating PET film, ethylene-vinyl alcohol copolymer film, and linear low-density polyethylene film

Moreover, the thickness (total thickness) of the synthetic resin film must be in the range of 70 μm or more and less than 140 μm. If the thickness of the synthetic resin film is less than 70 µm, the strength of the synthetic resin film becomes insufficient. In addition, since the synthetic resin film has no "stiffness", the miso storage gusset bag tends to swell when filled with miso. This is not desirable because it deteriorates and reduces the display effect at the point of sale. On the other hand, if the thickness of the synthetic resin film exceeds 140 μm, it is difficult to cut the gusseted miso storage bag with scissors at the gusset portion, which is not preferable. The thickness of the synthetic resin film is more preferably 70 μm or more and less than 110 μm.

In addition, when using the laminated films of a to f described above (paragraph 0017), adjusting the thickness of each layer as follows, the strength of the film, the strength of "stiffness", and the ability to cut with scissors It is preferable because the easiness of cutting is good (in the following description, “numerical value” to “numerical value” μm means “numerical value” μm or more and “numerical value” μm or less).
a. Biaxially stretched nylon film laminated with PET (12-18 μm) / ethylene-vinyl alcohol copolymer film (9-15 μm) / linear low-density polyethylene film (75-85 μm)
b. PET film (9-15 μm)/co-extruded film of nylon and poly-meta-xylylene adipamide (12-18 μm)/linear low-density polyethylene film (75-85 μm)
c. PET film (9-15 μm)/Co-extruded film of nylon and ethylene vinyl alcohol copolymer (12-18 μm)/Linear low-density polyethylene film (75-85 μm)
d. Silicon oxide deposited PET film (9-15 μm) / nylon film (12-18 μm) / linear low density polyethylene film (75-85 μm)
e. Aluminum oxide deposited PET film (9-15 μm) / nylon film (12-18 μm) / linear low density polyethylene film (75-85 μm)
f. PET film (9-15 μm) / ethylene-vinyl alcohol copolymer film (9-15 μm) / linear low-density polyethylene film (75-85 μm)

Also, the gusset bag for storing bean paste according to the present invention is manufactured by forming the above-described synthetic resin film into a gusset bag shape. That is, the left and right sides and the bottom (bottom) of the front and back panels are laminated in such a manner that the folding materials folded in two are sandwiched, and the sides and bottom of the laminate are heat-sealed (heat-sealed). manufactured by In addition, in the miso storage gusset bag according to the present invention, substantially the entire left and right edges of the front panel material are heat-sealed to the front edge edges of the left and right folding members, respectively. It is necessary that substantially the entire left and right edge edges of the back panel material are heat-sealed to the rear edge edges of the left and right folding members, respectively. By configuring the miso storage gusset bag in such a manner, it is possible to open the upper opening widely, and when storing (filling) the miso as the content or scraping out the miso, these operations are facilitated. It is possible to make it easier.

Each heat seal (formation of the side seal portion, bottom seal portion, etc.) and cutting can be performed as a series of processing using a gusset bag making machine, or as a batch (non-series) processing. It is also possible to The temperature for heat sealing is not particularly limited, but when using a synthetic resin film having a polyethylene (linear low density polyethylene) film as a heat-adhesive film, it is preferably within the range of 170 to 210 ° C. preferable.

In addition, the miso storage gusset bag according to the present invention must be provided with folding portions (so-called gussets) on both the left and right sides, and must also be provided with a folding portion on the lower side (bottom portion). By using such a gusseted miso storage bag, the self-sustainability of the miso storage gusseted bag is increased, and the miso storage gusseted bag alone can be stored in a refrigerator or the like or displayed on a product shelf. becomes.

In addition, the miso storage gusset bag is generally rectangular when viewed from the front, but the size is not particularly limited, and the height and width may be adjusted within the range of approximately 50 to 350 mm as necessary. can be done. In addition, the gusset bag for storing miso is provided with folding portions (portions folded inward in two) on both the left and right sides and the bottom side (bottom portion). ) is also not particularly limited, and can be adjusted as necessary within a range of approximately 15 to 175 mm.

Further, in the gusset bag for miso storage according to the present invention, the ratio of the width b (that is, twice the width of the folded part) of the left and right folding members to the width (left and right width) a of the front and back body material (i.e., b/a) is preferably 0.6 or more and less than 1.0 (see FIGS. 1 to 3). When the value of b/a is less than 0.6, the front and rear thickness of the gusset bag for storing miso filled with miso is significantly thinner than the left and right width. I don't like it because it's easy to fall over. Conversely, if the value of b/a exceeds 1.0, the left and right folded materials will interfere with each other at the center (the center in the width direction), making bag making difficult, which is not preferable. In addition, when the height of the miso when filled with miso is "m", the ratio of the height m of the miso to the width (left and right width) a of the front and back sides (left and right width) is 0 (i.e., m/a). 0.7 or more and 1.5 or less is preferable because the miso can be stably kept in an upright state when it is taken out.

In addition, it is preferable that the miso storage gusset bag is set at a position at a predetermined height to be cut horizontally and opened. That is, the position to be cut (opened) is indicated by printing a dashed line or a scissors mark, etc., or a notch, cut, or multiple openings that trigger cutting in the horizontal direction are displayed at the position to be cut on the side. When easily openable means such as pores are provided, or when a plurality of cutting lines, penetrating or non-penetrating pores, perforations, etc. are continuously provided in a horizontal direction so that they can be cut by hand preferable. In addition, it is preferable to set the planned unsealing position at an arbitrary height position above the upper surface of the miso to be filled inside.

The gusset bag for storing bean paste according to the present invention will be described below in more detail based on examples, but the present invention is not limited to the aspects of these examples in any way, and is within the scope of the present invention. and can be changed as appropriate. Methods for evaluating physical properties and characteristics in Examples and Comparative Examples are as follows.

<Stability when removing miso>
About 750 g of miso ("Ryotei no Aji" manufactured by Marukome Co., Ltd.) is stored (filled) at room temperature, placed on a horizontal surface, and miso is scooped out three times with a spoon (15 cc measuring spoon). The sense of stability of the storage gusset bag was sensory evaluated in the following three stages.
○: Maintained a vertically standing state without wobble △: Slightly wobbled depending on the amount of miso remaining or unevenness, but maintained an almost vertical standing state ×: Remaining amount of miso or unevenness I often wobbled and could not stand up stably due to

<Ease of cutting>
The gusset bag filled with and sealed with miso was cut at position C to be opened with scissors (small scissors for work), and the ease of cutting was sensory evaluated in the following three stages. .
○: Can be cut without applying a large force △: Cannot be cut without applying a fairly large force ×: Cannot be cut by hand

[Example 1]
<Manufacturing gusset bags for storing miso>
Using a gusset bag-making machine, a gusset bag for storing bean paste of Example 1 having folded portions on both the left and right sides and on the lower side was formed by the following steps a to c.
a. Place two long sheets of synthetic resin film (that is, front and back panels) having heat-adhesive surfaces on one side so that the heat-adhesive surfaces face each other. b. A folding material (made by folding the same synthetic resin film as the panel material) for forming the left and right folded parts between the two placed synthetic resin films (that is, the front and back panels); , a folding material for forming a folding part on the lower side (bottom part) (made by folding a synthetic resin film similar to the body material into two), and continuously sandwiching and laminating them. c. At the same time as cutting the above laminate to a predetermined size (length x width = 220 mm x 105 mm), the outer periphery of the laminate (left and right side edges and bottom edge) at a predetermined temperature (about 190 ° C.) to heat seal

In the production of the miso storage gusset bag described above, a biaxially oriented nylon film (base material) laminated with PET having a total thickness of 15 μm was used as a folding material for forming the front and back body materials and the left, right, and bottom folding parts. film), an ethylene-vinyl alcohol copolymer film with a thickness of 12 μm, and a linear low-density polyethylene film with a thickness of 80 μm (thermoadhesive film). A synthetic resin film (multilayer film with a total thickness of 107 μm) was used. In addition, in the base film, the nylon layer is thicker than the PET layer.

<Configuration of miso storage gusset bag>
FIGS. 1 and 2 show the gusseted miso storage bag P manufactured in Example 1. The miso storage gusseted bag P is composed of two substantially rectangular panel members 2a and 2b on the front and back sides, and a pair of them. The panel members 2a and 2b are formed so as to have a substantially rectangular (longitudinal rectangular shape) when viewed from the front by the folding members 3a and 3b sandwiched between the left and right edges of the panel members 2a and 2b and the folding member 4 at the bottom. It has a size of length x width = 220 mm x 105 mm. The front and back panels 2a and 2b are arranged with the linear low-density polyethylene film (thermoadhesive film) layer facing inward.

FIG. 3 shows the folding members 3a and 3b on the left and right sides and the folding member 4 on the bottom of the miso storage gusset bag P. As shown in FIG. Each of the left and right folding members 3a and 3b is made of the above-described synthetic resin film, and is made of a vertically elongated belt-like body with a width of 95 mm. width). The folding members 3a and 3b are arranged in a state in which the linear low-density polyethylene film layers are opposed to the back surfaces of the front and back panel members 2a and 2b.

In addition, the portions near the lower ends of the left and right folding members 3a and 3b are each bent diagonally inward so as to form an M-shaped cross section (vertical cross section). Inside, the left and right ends of a bottom folding member 4 formed by folding a horizontally long belt-shaped body with a width of 95 mm in two are sandwiched. The folding member 4 at the bottom has a structure folded in two with a predetermined width (about 47.5 mm width) so that the linear low-density polyethylene film layer faces outward. Panel members 2a and 2b are superimposed on the front and back sides of the left and right folding members 3a and 3b and the bottom folding member 4. As shown in FIG.

Side seal portions 5, 5, . . . having a width of about 8 mm are formed by heat-sealing portions near the edges of the laminated portions of the panel members 2a, 2b and the folding members 3a, 3b. In the upper portion of the side seal portions 5, 5, . are fused together. On the other hand, in the portions near the lower ends of the side seal portions 5, 5, . The back surface of the panel member 2b and the back surface of the folding members 3a and 3b are fused together, and inside the bent portion F, the back surfaces of the folding members 3a and 3b and the back surface of the bottom folding member 4 are fused. Matching.

Further, bottom seal portions 15, 15 are formed by heat-sealing the portion near the lower edge of the folded portion of the bottom (the portion where the folded material 4 is sandwiched) into a belt shape of a certain height (approximately 8 mm). . At the bottom seal portions 15, 15, the back surface of the front panel member 2a and the back surface of the folding member 4, and the back surface of the back panel member 2b and the back surface of the folding member 4 are fused together.

In the miso storage gusset bag P, the outer periphery (peripheral edge) of the bottom folding member 4 is heat-sealed to the lower ends of the front and back panel members 2a and 2b and to the lower ends of the left and right folding members 3a and 3b. is in a state of The entire left and right edge edges of the front panel material 2a are heat-sealed to the front edge edges of the left and right folding members 3a and 3b, respectively. The entire left and right edges are heat-sealed to the rear edges of the left and right folding members 3a and 3b, respectively.

At a predetermined height position (a position about 30 mm below the upper edge) of the miso storage gusset bag P manufactured as described above, a dashed line C ( expected opening position) is displayed by printing. The dashed line C is circumferentially printed across the folded portions 3a and 3b and the panel members 2a and 2b (see FIGS. 1 and 2).

<Evaluation of miso storage gusset bag>
Miso (750 g) was filled from the opening O of the upper edge of the gusset bag P for storing bean paste of Example 1 (the portion between the left and right side seal portions 5, 5 where heat is not sealed). The filling was performed so that the surface of the miso was generally flat. The height (m) of miso after filling was about 90 mm. It should be noted that, when filling the miso, it was possible to fill the miso from the opening O very easily because the left and right folding members 3a and 3b were widened to form a large opening. After filling with miso, the folding members 3a and 3b are folded back at the opening O at the upper edge and heat-sealed to fuse the panel members 2a and 2b at the center of the opening O. On the left and right sides thereof, the body members 2a and 2b and the facing folding members 3a and 3b are fused to form a belt-shaped head seal portion with a constant height (approximately 5 mm to 10 mm) to form a gusset bag for storing miso. P was sealed. The head seal portion was formed so as to overlap the left and right side seal portions 5,5.

When miso is stored (filled) in the miso storage gusset bag P as described above, the folding members 3a and 3b expand to form a rectangular side surface, and the folding member 4 expands near the bottom to form a rectangular bottom surface ( Left-right width = 105 mm x front-back width = 95 mm), and it was possible to stand up in a stable state. Then, using the miso storage gusset bag P (containing the miso), the "stability when taking out the miso" and the "easiness of cutting" were evaluated by the above-described methods. The evaluation results are shown in Table 1 together with the properties of the miso storage gusset bag P.

[Example 2]
When manufacturing the gusseted bag for miso storage, a biaxially oriented nylon film (base film), an ethylene-vinyl alcohol copolymer film with a thickness of 12 μm, and a linear low-density polyethylene film with a thickness of 50 μm (thermoadhesive film). A synthetic resin film (multilayer film with a total thickness of 77 μm) was used. A gusset bag for storing miso of Example 2 was obtained in the same manner as in Example 1 except for the above. Then, miso was stored in the obtained miso storage gusset bag, and using the miso storage gusset bag after miso storage, "stability when taking out miso" and "cutting ease" were measured in the same manner as in Example 1. evaluated. The evaluation results are shown in Table 1 together with the properties of the miso storage gusset bag.

[Example 3]
When manufacturing the gusseted bag for miso storage, a biaxially oriented nylon film (base film), a 12 μm-thick ethylene-vinyl alcohol copolymer film is laminated on top of it, and a 100 μm-thick linear low-density polyethylene film (thermoadhesive film) is laminated thereon. A synthetic resin film (multilayer film with a total thickness of 127 μm) was used. A gusset bag for storing miso of Example 3 was obtained in the same manner as in Example 1 except for the above. Then, miso was stored in the obtained miso storage gusset bag, and using the miso storage gusset bag after miso storage, "stability when taking out miso" and "cutting ease" were measured in the same manner as in Example 1. evaluated. The evaluation results are shown in Table 1 together with the properties of the miso storage gusset bag.

[Examples 4 and 5]
When manufacturing the miso storage gusset bag, the width (expanded width) a of the left and right folding members 3a and 3b and the width (expanded width) b of the bottom folding member 4 are changed to 50 mm and 70 mm, respectively. Gusset bags for storing bean paste of Examples 4 and 5 were obtained in the same manner as in Example 1 except for the above.
Then, miso was stored in the obtained miso storage gusset bag, and using the miso storage gusset bag after miso storage, "stability when taking out miso" and "cutting ease" were measured in the same manner as in Example 1. evaluated. The height of miso in the miso-filled gusset bag of Example 4 filled with miso was 210 mm (m/a = 2.0). The height of miso was 130 mm (m/a=1.3). The evaluation results are shown in Table 1 together with the properties of the miso storage gusset bag.

[Example 6]
When manufacturing the miso storage gusset bag, as a folding material for forming the front and back body materials and the left and right and bottom folding parts, a 12 µm thick polymetallic film was placed on a 15 µm thick PET film (base film). A transparent synthetic resin film (total thickness: 107 μm) is prepared by laminating a coextruded film of silylene adipamide and nylon, and further laminating an 80 μm thick linear low-density polyethylene film (thermoadhesive film) thereon. multilayer film) was used. A gusset bag for storing miso of Example 6 was obtained in the same manner as in Example 1 except for the above. Then, miso was stored in the obtained miso storage gusset bag, and using the miso storage gusset bag after miso storage, "stability when taking out miso" and "cutting ease" were measured in the same manner as in Example 1. evaluated. The evaluation results are shown in Table 1 together with the properties of the miso storage gusset bag.

[Example 7]
When manufacturing miso storage gusset bags, 12 μm thick ethylene- A transparent synthetic resin film (multilayer film with a total thickness of 107 μm) obtained by laminating a vinyl alcohol copolymer film and further laminating an 80 μm-thick linear low-density polyethylene film (thermoadhesive film) thereon. It was used. A gusset bag for storing miso of Example 7 was obtained in the same manner as in Example 1 except for the above. Then, miso was stored in the obtained miso storage gusset bag, and using the miso storage gusset bag after miso storage, "stability when taking out miso" and "cutting ease" were measured in the same manner as in Example 1. evaluated. The evaluation results are shown in Table 1 together with the properties of the miso storage gusset bag.

[Comparative Example 1]
When manufacturing the gusseted bag for miso storage, a biaxially oriented nylon film (base film), a 12 μm-thick ethylene-vinyl alcohol copolymer film is laminated on top of it, and a 150 μm-thick linear low-density polyethylene film (thermoadhesive film) is laminated thereon. A synthetic resin film (multilayer film with a total thickness of 177 μm) was used. A gusset bag for storing miso of Comparative Example 1 was obtained in the same manner as in Example 1 except for the above. Then, miso was stored in the obtained miso storage gusset bag, and using the miso storage gusset bag after miso storage, "stability when taking out miso" and "cutting ease" were measured in the same manner as in Example 1. evaluated. The evaluation results are shown in Table 1 together with the properties of the miso storage gusset bag.

From Table 1, it can be seen that the miso storage gusset bags of Examples 1 to 6 are all good in both stability when taking out miso and ease of cutting. On the other hand, it can be seen that the miso storage gusset bag of Comparative Example 1, in which the thickness of the synthetic resin film is larger than the upper limit of the scope of claims, is inferior in ease of cutting.

<Example of changing miso storage gusset bag>
The configuration of the miso storage gusset bag according to the present invention is not limited to the aspects of the above-described embodiments. , width, width of the gusset, structure of the gusset, etc.) can be appropriately changed as necessary without departing from the gist of the present invention.

For example, the synthetic resin films for forming the panel member and the folded portion may be PET film or nylon film, ethylene-vinyl alcohol copolymer film, and polyethylene film (linear low-density polyethylene film), as in the above embodiment. It is not limited to the laminate of , but may be a laminate of synthetic resin films made of other materials, or a laminate of metal foil, metal deposition film, or the like. As the synthetic resin film, as in the above embodiment, a laminated film containing a PET film such as a biaxially stretched nylon film laminated with PET, an ethylene-vinyl alcohol copolymer film, and a linear low-density polyethylene film was used. In this case, the strength of the panel material and the folding material is improved, and the manufacturing is facilitated. Moreover, since it is excellent in oxygen barrier properties and dimensional stability, it is suitable as a package for miso.

In addition, the lower (bottom) folding part is installed by bending the parts near the lower edges of the left and right folding materials diagonally inward so that the vertical cross section becomes M-shaped, as in the above embodiment. The method is not limited to the method of sandwiching the left and right ends of the bottom folding material inside the bent portions. As shown in FIG. It is also possible to adopt a method of forming the folding member and the bottom folding member together (forming them in a continuous manner).

Since the gusset bag for storing bean paste of the present invention exhibits excellent effects as described above, it can be suitably used as a bag for packaging miso, which is a highly viscous semisolid.

P... Gusset bag for miso storage 2a, 2b... Body material
3a, 2b... Folding part (left and right)
4. Folding part (bottom part)
5... Side seal part 15... Bottom seal part C... Position to be opened

Claims (3)

A gusset bag for storing miso, which is formed in a bag shape by sandwiching folding materials on both the left and right sides and the lower side of two front and back body materials with a synthetic resin film,
The outer periphery of the lower folding material is heat-sealed to the lower ends of the front and back panel members and to the lower ends of the left and right folding members, and
Approximately the entire left and right edges of the front panel material are heat-sealed to the front edge areas of the left and right folding members, respectively, and substantially the entire left and right edge areas of the back panel material are heat-sealed. , respectively, are heat-sealed near the edges on the rear side of the left and right folding materials,
The thickness of the synthetic resin film that constitutes the front and back panel materials, the left and right sides, and the lower folding material is all 70 μm or more and 140 μm or less,
The ratio of the width b of each left and right folding member to the width a of the front and back panel members is 0.6 or more and less than 1.0, and
When miso is filled inside, the ratio of the height m of the filled miso to the left and right width a of the front and back panel material is 0.7 or more and 1.5 or less, and
The intended opening position, which is the position to be opened, is printed above the upper surface of the miso to be filled. and
Each of the left and right folding members is formed by folding a multilayer film having a heat adhesive layer on one side so that the heat adhesive layer faces outward,
At the center of the upper edge, the front and back panels are heat-sealed at a constant height, and at the left and right sides of the upper edge, the front and back panels are at a constant level with the outer surfaces of the opposite left and right folding members. This gusset bag for storing bean paste is characterized in that it is heat-sealed at a height and the inner surfaces of left and right folding materials are not heat-sealed and are separated from each other. 2. A gusset bag for storing bean paste according to claim 1, wherein the synthetic resin films forming the front and back panel members, the left and right sides, and the lower folding member are laminated films each including a PET layer. 3. The miso storage gusset according to claim 1 or claim 2, wherein the synthetic resin films forming the front and back panel members, the left and right sides, and the lower folding members all have gas barrier properties. bag.

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