JP2018122872A - Self-standing packaging bag with fastener - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging container having a function of self-standing and holding a steam-releasing mechanism at an upper side, when heating a packaging bag in a closed state of an opening for putting in cooking materials before setting in a microwave oven, and releasing the steam by the inner pressure rise.SOLUTION: A self-standing packaging bag (1) comprises: an inner space for putting in seasoning; an opening (5) for putting cooking materials into the inner space; a resin fastener (50) opening/closing the opening; and a bottom gazette (4) formed by fusing an intermediate film. The self-standing packaging bag with the fastener is provided with an air column region comprising an air injection part (71) comprising a non-fused part surrounded with a fused belt and allowing air filling, and an inner fused region (72) surrounded with the air injection part and having an air injection hole allowing air injection from the outside, in a space region comprising a front surface film (2) and a back surface film (3) avoiding the opening of the inner space and the bottom gazette.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a self-supporting packaging bag that has an internal space of a packaging bag and an opening for putting a cooking material, can be opened and closed, and can be cooked with a microwave oven or the like.

2. Description of the Related Art In recent years, packaging bags in which seasonings and the like are preliminarily stored in a packaging bag, cooking utensils are added from the opening of the packaging bag, and cooking is performed with a microwave oven or the like have been used in recent years.
For example, in Patent Document 1, a pouch having an internal space and a bag having an opening for putting contents into the internal space and a fastener for opening and sealing the opening, the fastener being highly fitted A pouch having a strength portion and a low fitting strength portion is proposed.

When cooking with a microwave oven, it is necessary to secure a steam vent that escapes steam generated during heating and to keep the packaging bag upright so that the steam vent is always on the top side. is there.
The pouch proposed in Patent Document 1 originally has no cooking material inside the packaging bag, and it is necessary to secure a large capacity to heat and cook the material in the packaging bag later. It was. Therefore, the thickness of the packaging bag itself is thin and the pouch is not self-supporting.
Moreover, since it is a thin and soft container, it is difficult to hold it sufficiently strong. In particular, seasonings leaking from the inside are likely to adhere, and the hand holding the packaging bag is slippery.
For this reason, in order to make it stand after putting cooking utensils, adjustments, such as arranging ingredients well in the bottom side of a packaging bag, were needed, and a consumer had to do it.
However, if the package is not properly stored by a person, the packaging bag may fall during heating in the microwave and the contents may be ejected.

JP 2014-111142 A

  Therefore, when the packaging bag is closed and heated in the opening where the cooking ingredients are placed before entering the microwave oven, the container is self-supporting when the internal pressure rises and escapes the steam. It is an object of the present invention to obtain a packaging container having a function of holding on the upper side.

The present invention includes an internal space for putting seasonings and the like, an opening for putting cooking ingredients in the internal space, a resin fastener for opening and sealing the opening, and a bottom gusset fused to an intermediate film,
A self-supporting packaging bag having
In the space area consisting of the front film and the back film, avoiding the opening of the internal space and the bottom gusset,
An air strut region comprising an air injection portion composed of an air-fillable non-fused portion surrounded by a cohesive zone, and an inner fusion region surrounded by the air injection portion and having an injection hole capable of injecting air from the outside. It is a self-supporting packaging bag with a fastener characterized by being provided.

  In the packaging container of the present invention, an air column can be formed in the packaging container even when the contents are small by filling the non-fused part surrounded by the cohesive zone with air. Rukoto can. For this reason, when heating with a microwave oven etc., the fastener which discharges | emits water vapor | steam can be hold | maintained so that it may become upward.

It is the packaging bag in 1st Embodiment of this invention, the perspective view which shows the external appearance of the container before filling a cooking raw material, and the cross-sectional view of a packaging bag. They are the longitudinal cross-sectional view before forming an air support | pillar in the packaging bag in the example of 1st Embodiment of this invention, and the longitudinal cross-sectional view which shows the state which formed the air support | pillar. It is an expanded sectional view which shows the process of forming an air support | pillar with the packaging bag in the example of 1st Embodiment of this invention. It is the longitudinal cross-sectional view before filling with a cooking raw material with the packaging bag without an air support | pillar with the conventional packaging bag, and a longitudinal cross-sectional view which shows the state at the time of standing it. They are the longitudinal cross-sectional view of the state of the packaging bag before filling a cooking raw material with the packaging bag in 1st Embodiment of this invention, and the longitudinal cross-sectional view of the state which heat-cooked after filling a cooking raw material. It is the packaging bag in 2nd Embodiment of this invention, The perspective view which shows the external appearance of the packaging bag before filling a cooking raw material, and the cross-sectional view of a packaging bag. It is the packaging bag in the 1st comparative example which does not depend on this invention, the perspective view which shows the external appearance of the packaging bag before filling a cooking raw material, and the cross-sectional view of a packaging bag. They are the packaging bag in the 2nd comparative example which does not depend on this invention, the perspective view which shows the external appearance of the packaging bag before filling a cooking raw material, and the cross-sectional view of a packaging bag.

Hereinafter, embodiments of the packaging bag of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a packaging bag 1 according to the first embodiment of the present invention. FIG. 1-1 is a perspective view showing an appearance of the packaging bag before filling with a cooking material, and FIG. It is a cross-sectional view of a bag.

In the first embodiment, the front film 2, the back film 3, an intermediate film 40 folded from below, and a resin fastener 50 that can be locked upward by males and females are provided.
The left and right side seal portions of the packaging container are provided with a filling port 6 for filling the contents and air struts 7 on the side seal portion on the opposite side of the filling port 6.

The intermediate film 40 is folded with the fusion surface outward, and is fused between the front film 2 and the back film 3 to form a bottom gusset 4 and can be self-supported by widening the bottom.
There is an opening 5 on the upper side, and the opening fused portion is cut off by the notch 54, the weak line 53, and the like so that the opening can be opened.
A resin fastener 50 is fused to the opening 5 on the inner side of the fragile line 53, and after opening at the fragile line portion, the cooking material can be inserted and sealed again. The resin fastener 50 is composed of a male and a female, and they can be engaged with each other to be fitted to each other, and can be opened and sealed, respectively.

  The packaging bag 1 of the present invention is provided with an internal space 10 for putting seasonings and the like between the bottom gusset 4 and the opening 5. One of the left and right side surfaces of the internal space 10 is provided with a filling port 6 for containing the seasoning and the like. The filling port 6 is fused and then closed after filling with a seasoning or the like, so that the form shown in FIG. 1 is obtained.

On the other of the left and right side surfaces of the internal space 10, an air injection portion comprising a fusion zone from a position away from the resin fastener 50 to the side of the bottom gusset, and a non-fusion portion that can be filled with air surrounded by the fusion zone. An air strut region 70 is provided that includes 71 and an internal fusion region 72 having an injection hole 720 that is surrounded by an air injection portion and has a cut or the like that allows air to be injected from the outside.
The air strut region 70 is formed in a columnar shape or connected linearly in a direction perpendicular to the bottom portion of the bottom gusset 4. The air strut 7 formed by the air injecting portion 71 in the air strut region 70 is formed between the bottom gusset 4 and the opening 5 so as to be connected in a direction perpendicular to the bottom surface.
For this reason, if the air support | pillar 7 is formed and there is a content in a bottom face, a packaging bag can raise the upper part with a resin fastener.

Further, in the air strut region, there is an internal fusion region 72 surrounded by a bulging air injection portion 71. For this reason, when grasping the packaging bag with the air strut part, the tip of the finger can enter the inner fusion zone 72 and grasp it firmly, so even if the hand is slippery due to the attachment of contents, etc. Accidents such as dropping a packaging bag are unlikely to occur.
However, it is better to provide the lower end of the air injection portion in the air strut region at least 10 mm above the upper end of the intermediate film fusion portion. The upper end of the intermediate film fusion portion is a step portion that changes from a fusion portion where four films overlap to a fusion portion where only two films, a front film and a back film, overlap. Since the fusion pressure is reduced at this step, the fusion force is inevitably reduced. Thus, if this level difference is too close, air leakage will easily occur in the air column. The air injection portion of the air strut needs to have a strength that does not easily peel off the fused portion even when a force is applied, and the strength can be kept stable if it is separated by 10 mm.

In FIG. 4, the longitudinal cross-sectional view of the packaging bag without an air support | pillar was shown.
As shown in FIG. 4-1, when there is no air column and the contents are not filled with much, the contents are stored only in the vicinity of the bottom gusset at the bottom, and in the center and above, the front film 2 and the back film 3 is in an approaching state. When the front film 2 and the back film 3 are close to each other, as shown in FIG. 4B, the opening 5 side hangs down and is bent at the center of the packaging bag.
In this state, the upper part is heavy and the center of gravity is offset, so that it cannot stand on its own as shown in FIG.
If it falls down, the seasonings etc. are likely to adhere to the resin fastener 50, etc., and it is easy to get your hands dirty when opened, etc. May cause problems such as eruption.

FIG. 2 is a longitudinal cross-sectional view of the packaging bag of the present invention on the C-plane of FIG. 1-1.
FIG. 2-1 shows a state before the air strut is formed, and an injection hole 720 is formed in the internal fusion region on the back film side.
Since the injection hole only needs to be able to inject air from the outside, the injection hole may be a simple cut or a circular hole. It is preferable to overlap a plurality of cuts such as cross-shaped cuts because they can be reliably opened and injected, processed with a simple blade, and no residue is generated.

  FIG. 2-2 is a longitudinal sectional view of the air strut region in the state where the air strut is formed. The air injection portions 71 swelled in a donut shape are arranged vertically. And the adjacent air injection | pouring parts are connected and the long air support | pillar is formed as a whole.

FIG. 3 is an enlarged cross-sectional view showing a process of forming air struts in the air strut region in the packaging bag of the present invention.
FIG. 3A shows a state before the air strut is formed, and an injection hole 720 is formed in the internal fusion region on the back film side. The injection hole 720 is cut with a big blade or the like before the front film or the back film is made.
3-2, the upper and lower ends of the figure are first pressed by a circular outer fusion jig to fuse the periphery. At this time, the inner fusion jig that can be pressurized without being heated also hits the inner fusion region, and air is injected into the inside from an injection hole formed by a cut or the like.
FIG. 3-3 shows that the front film 2 and the back film 3 are fused by an ultrasonic fusing machine or an impulse sealer machine by pressing the inner fusing jig in the inner fusing region from the front side and the back side. The injection hole 720 is closed.
In FIG. 3-4, the inner fusion jig and the outer fusion jig are retracted, and the air column is taken out of the jig. Air struts are formed by such processes. Since the air struts may be processed immediately before filling with contents such as seasonings, the air struts may be molded by a packaging material manufacturer or may be molded by a filling manufacturer.

FIG. 5 is a longitudinal sectional view of a packaging bag in which air struts are formed, and is a sectional view on the A plane of FIG. 1-1.
FIG. 5-1 is a longitudinal sectional view showing a state in which contents such as seasonings are filled, and the opening 5 has not been opened yet. Since air struts are formed, even if the front film 2 and the back film 3 are close to each other, there is a waist and does not bend as shown in FIG.
FIG. 5-2 is an enlarged cross-sectional view of the resin fastener indicated by E in FIG. The male chuck 51 and the female chuck 52 are fitted and can be sealed even after the opening is opened. The resin fastener used in the present invention may be a general resin fastener, but is a resin fastener having a high fitting strength portion on the inside and a low fitting strength portion on the outside with different fitting strengths inside and outside. It is preferable. A resin fastener having such a fitting strength changed inside and outside is easy to open manually from the outside, but is easy to withstand high internal pressure, and cooking of a microwave oven is possible at high pressure and temperature.
In addition, even if the internal pressure rises and a certain pressure difference occurs inside and outside of the packaging bag, the low-fitting strength part is partially provided on the inner fastener fitting part so that it does not open widely. Therefore, the packaging bag can be easily cooked by keeping the internal pressure and temperature of the packaging bag at a high level.
FIG. 5-3 shows a state in which the opening 5 is opened and the cooking material is filled from the resin fastener portion, and then the resin fastener is once closed and microwave heating is performed.
Since the air struts 7 have already been formed at the stage of filling the inside of the packaging bag 1, the packaging bag 1 is easy to stand on its own. Since the resin fastener 50 is positioned above the self-standing packaging bag 1, the resin fastener 50 is opened and kept at a constant pressure when heated in a microwave oven. Moreover, the temperature inside the packaging bag 1 is also kept at about 100 ° C., and stable cooking is possible.

FIG. 6 shows another second embodiment of the packaging bag of the present invention.
The air column has an elongated oval shape, and an elongated inner fusion region 72 is provided at the center. In the cross-sectional view on the B surface of FIG. 6B, there is no difference from the first embodiment, but the air injection portion 71 corresponds to a shape in which two long tubes are configured in parallel. Is hard to bend.

  Hereinafter, specific examples of the present invention will be described.

<Example 1>
Extrusion lamination machine using the same film for the front film, back film, and intermediate film, and from the outside, polyethylene terephthalate film deposited with silicon oxide 12 μm / adhesive / polyamide film 15 μm / unstretched polypropylene resin layer 60 μm Pasted together.
The shape in FIG. 1 is 210 mm wide and 170 mm high.
The air strut is 60mm high from the position 10mm above the upper end of the intermediate film and has an outer diameter of φ2
It has an internal fusion area of 2 mm and an inner diameter of 10 mm.
The inner edge of the air strut region was 10 mm from the inner edge of the air injection part.
Further, the upper end of the air strut region was set to a position 10 mm from the upper end of the air injection portion, and the front film and the rear film were fused to that position.
The gap between the upper end of the air strut region and the lower end of the resin fastener was 5 mm.
The contents were omelet materials.
As processing conditions at the time of filling, shower sterilization was performed at 121 ° C. for 30 minutes.

<Example 2>
For the front film, the back film, and the intermediate film, the same constituent films as in Example 1 were used.
The shape is 210 mm in width and 170 mm in height in FIG.
The air strut had a height of 60 mm upward from a position 10 mm from the upper end of the intermediate film, an ellipse having an outer width of 22 mm, and an internal fusion region having a width of 10 mm and an ellipse separated by 6 mm on the left and right sides.
The inner edge of the air strut region was 10 mm from the inner edge of the air injection part.
Further, the upper end of the air strut region was set to a position 10 mm from the upper end of the air injection portion, and the front film and the rear film were fused to that position.
The gap between the upper end of the air strut region and the lower end of the resin fastener was 5 mm.
The contents and the processing conditions during filling were the same as in Example 1.

<Comparative Example 1>
For the front film, the back film, and the intermediate film, the same constituent films as in Example 1 were used.
The shape is 210 mm in width and 170 mm in height in FIG.
The air strut was an ellipse having a height of 60 mm upward from a position 10 mm from the upper end of the intermediate film and an outer width of 22 mm, and no internal fusion region was provided.
The inner edge of the air strut region was 10 mm from the inner edge of the air injection part.
Further, the upper end of the air strut region was set to a position 10 mm from the upper end of the air injection portion, and the front film and the rear film were fused to that position.
The gap between the upper end of the air strut region and the lower end of the resin fastener was 5 mm.
The contents and the processing conditions during filling were the same as in Example 1.

<Comparative example 2>
For the front film, the back film, and the intermediate film, the same constituent films as in Example 1 were used.
The shape is 210 mm in width and 170 mm in height in FIG.
Although no air strut was provided, the air strut region of Example 1 was a wide side fused portion so that it could be easily compared with the example.
The wide side surface fusion part has a height of 80 mm upward from the upper end of the intermediate film.
The inner side edge part of the wide side surface fusion part was set to the position of the inner side edge part of the air strut region of Example 1.
The gap between the upper end of the wide side fused portion and the lower end of the resin fastener was 5 mm.
The contents and the processing conditions during filling were the same as in Example 1.

<Evaluation method>
The opening was cut by a weak line at the opening, the resin fastener was opened, two raw eggs (110 grams) were broken and placed inside the packaging bag, and the resin fastener was closed.
With the resin fastener closed, the packaging bag was shaken so that the eggs and ingredients were well mixed.
Thereafter, cooking was performed for 4 minutes in a 600 W microwave oven with the bottom gusset facing down.

[Evaluation item]
<Handling> In the case of the embodiment, the air strut region is grasped so that the fingertip enters the internal fusion region. In the case of the comparative example, the vicinity of the air strut region was grasped. Shake the heavy packaging bag after throwing the raw eggs in the gripped state, and evaluate the ease of gripping and ease of gripping when gripping with a hand that has been washed and gripping with a wet hand .
<Fumigation> Confirms and evaluates whether the packaging bag expands sufficiently when cooked in a microwave oven and can maintain its state during heating, or whether steam can escape gradually without breaking the bag.
<Appearance> Presence or absence of peeling of the seal inside the packaging bag. Whether the plastic fastener is damaged.

  As shown in Table 1, the evaluation results are assured that in Example 1 and Example 2, there is no fear that the packaging bag slips and drops even if the fingertip enters the internal fusion zone 72 and the hand is wet. Can grab. However, in Comparative Example 1 and Comparative Example 2, it is easy to slip and drop even if the side surface is grasped. In particular, in Comparative Example 2, since the packaging bag was soft and not self-supporting due to the heat after cooking, there was a problem that the resin fastener side would hang down and the contents leaked easily and could easily be burned.

  The front film 2 and the back film 3 used in the packaging bag of the present invention are provided with air struts and are subject to excessive pressure. In the packaging bag of the present invention, each film of the front film, the back film and the intermediate film constituting the packaging bag has an intermediate so that it does not break immediately even if excessive pressure is applied to the air column. A polyamide resin layer may be provided on the outer layer or the outer layer. The polyamide resin layer has a high flexibility to relieve the impact, and by providing the polyamide resin layer in the intermediate layer or the outer layer, bag breakage or the like can be prevented.

  As the barrier film, use is made of stretched polyethylene terephthalate or stretched polyamide film deposited with metal oxide such as silicon oxide or aluminum oxide, or saponified ethylene vinyl acetate copolymer, but deposited with pure metal such as aluminum. Do not use metal foil or metal foil because it generates heat in the microwave.

  As the sealant, unstretched polypropylene having high fusion strength and heat resistance is preferable. It has fusibility, can be retorted, and has high heat resistance.

From the above, the front film 2 and the back film 3 used for the packaging bag can be configured such as stretched polyethylene terephthalate / polyamide resin film / sealant from the outside. Specifically, biaxially stretched polyamide / polyethylene / inorganic oxide vapor-deposited polyethylene terephthalate / unstretched polypropylene,
Biaxially oriented polyethylene terephthalate / adhesive / polyamide / adhesive / saponified ethylene vinyl acetate copolymer / unstretched polypropylene,
Biaxially stretched polyethylene terephthalate / adhesive resin / polyamide / adhesive / unstretched polypropylene,
Biaxially oriented polypropylene / adhesive / polyamide / adhesive / unstretched polypropylene,
A general configuration such as
These films can be produced by pasting them together with an ordinary dry lamination machine, an extruder laminating machine, or the like.

The film used for the intermediate film on the bottom may be a front film or a back film. However, since it is used by being folded, it is preferable to make the biaxially stretched film of the surface layer thin in order to make it softer than the front film 2 and the back film 3.
In particular, a biaxially stretched film is used for the surface layer so that the surface layers are not fused together.

The packaging bag of the present invention is as described above, and although it may be a hot water bath, it is usually a packaging bag that is heated and used in a microwave oven or the like.
This packaging bag has an air support with a waist when taken out after heating, and the fingertip can be inserted into the internal fusion area surrounded by the air injection part, so it will not slip even if your hands are wet Can grab. In addition, since there is an air column and the resin fastener can be held at a high position, there is no problem of the contents of the container scattering, and even if the temperature drops, the contents will not leak out, making it extremely easy to handle and packaging. It is only necessary to slightly increase the width of the bag, and the merit of the present invention is great.

1 ... Packing bag 10 ... Internal space 2 ... Front film 3 ... Back film 4 ... ..... Bottom gusset 40 ... Intermediate film 5 ... Opening 50 ... Resin fastener 51 ...・ ・ Male chuck 52 ... Female chuck 53 ... Fragile line 54 ... Notch 6 ... Filling port 7 ········································································································. .... Injection hole

Claims (8)

An internal space for putting seasonings, an opening for putting cooking ingredients in the internal space, a resin fastener for opening and sealing the opening, and a bottom gusset fused to an intermediate film,
A self-supporting packaging bag having
In the space area consisting of the front film and the back film, avoiding the opening of the internal space and the bottom gusset,
An air strut region comprising an air injection portion composed of an air-fillable non-fused portion surrounded by a cohesive zone, and an inner fusion region surrounded by the air injection portion and having an injection hole capable of injecting air from the outside. A self-supporting packaging bag with a fastener, characterized by being provided.   The self-supporting packaging bag with a fastener according to claim 1, wherein air is injected into an air injection portion in an air strut region, and an internal fusion region is fused.   The self-supporting packaging bag with a fastener according to claim 1 or 2, wherein the non-fused portions that can be filled with air are connected in a columnar shape or linearly in a direction perpendicular to the bottom surface.   The self-supporting packaging bag with a fastener according to any one of claims 1 to 3, wherein the non-fused portion of the air strut that can be filled with air is connected in a direction perpendicular to the bottom surface.   The self-supporting packaging bag with a fastener according to any one of claims 1 to 4, wherein the resin fastener has fitting strength portions having different strengths.   The self-supporting packaging bag with a fastener according to any one of claims 1 to 5, wherein a filling port for injecting a seasoning or the like is provided on the side surface opposite to the air column.   The self-supporting packaging bag with a fastener according to any one of claims 1 to 6, wherein the lower end of the air injection portion in the air strut region is provided at least 10 mm above the upper end of the intermediate film fusion portion.   The self-supporting packaging with a fastener according to any one of claims 1 to 7, wherein the front film, the rear film, and the intermediate film constituting the packaging bag have a polyamide resin layer as an intermediate layer or an outer layer. bag.

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