JPH09221176A - Retort pouch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a temporarily adhered part capable of demarcating chambers during the distribution and peeling the temporarily adhered part during the use so as to blend different kinds of contents by providing a seal part on a peripheral part of two-continuous bag for blending, and providing the temporarily adhered part to demarcate the two-continuous bag for blending into two chambers through an easily peelable tape. SOLUTION: A laminated body to form a bag body is made by laminating a heat resistant base material, a base material of heat sealability or heat resistance, and a film of gas shielding property or heat sealability inwardly in this order. Two laminated bodies are lapped with faces of the heat sealable films opposite to each other, and an outer circumferential edge parts are heat-sealed as a sealed part to provide a bag body. A sealed part 5 is made by heat-sealing a temporarily adhered part 5 to demarcate the prescribed part into two chambers by interposing an easy peelable tape 6. Separate content parts 7, 8 are stored in two chamber demarcated by the temporarily adhered part 5, and the sealed part 5 is peeled during the use to make a two-continuous bag C for blending capable of blending the different contents 7, 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retort pouch, and more particularly to a retort pouch capable of accommodating contents of another type and mixing the contents of another type by peeling off a temporary adhesive portion during use. is there.

[0002]

2. Description of the Related Art Conventionally, various food packaging techniques have been proposed, and one of them is the retort packaging technique.
This is a packaging technique in which the adjusted food is packed in a bag-shaped or other-shaped container made of a plastic film or metal foil or a multilayered product of these, sealed by heat melting, and sterilized by heating under pressure. . Initially,
It was started from stuffed and sterilized, but in recent years, with the development of the food processing industry, the packaging industry, etc., the contents to be stuffed have become abundant, and packaging technology for heat-resistant containers has been developed. It is expected to form a new processed food field and develop it. By the way, the above-mentioned sea urchin retort food is usually one in which the ingredients, the seasoning liquid, etc. are integrally packed and packaged. Therefore, in such a case, the seasoning fluid, etc. permeates the ingredients during storage. However, there is a problem that the original taste of the ingredient is lost and the ingredient changes color. Therefore, in recent years, in retort foods, a three-sided seal, a four-sided seal, etc., is provided with a temporary adhesive portion and divided into two chambers, and each chamber stores different kinds of contents, and when used. A retort pouch comprising a double bag for mixing capable of mixing the different types of contents by peeling off the temporary adhesive portion has been proposed, and it has been attempted to provide a retort product excellent in taste and appearance. .

[0003]

However, in the retort pouch consisting of the above-mentioned double bags for mixing,
Each room of the temporary adhesion part is divided at the time of distribution, etc., but it is necessary that the temporary adhesion part has a structure capable of peeling and mixing the contents of different kinds at the time of use. The reality is that no retort pouch having sufficient function and consisting of double bags for mixing has been proposed. For example, during distribution, the retort pouch is pressed by an external force, so that the temporary adhesive portion is easily peeled off before use and the contents of different types are mixed. In addition, when one is a liquid material and the other is a solid material as the content, even if the temporary adhesive portion is peeled and mixed, the temporary adhesive portion does not sufficiently peel off, and the temporary adhesive portion causes an obstacle. Then, there is also a problem that the solid matter is caught in the temporary adhesion portion and is not mixed as desired. Furthermore, the seal strength of the temporary adhesive portion is too strong, and the temporary adhesive portion does not peel off. Therefore, the present invention, in the retort pouch consisting of a double bag for mixing, improve the adhesiveness of the temporary adhesion portion, each chamber is partitioned at the time of distribution, etc., but peels off at the time of use to separate different contents. It is intended to provide a retort pouch made of a double bag for mixing having a temporary adhesive portion that can be mixed.

[0004]

As a result of various studies to solve the above problems, the present inventor constructed a bag body by providing a seal portion around the outer peripheral end portion, and At the time of providing a temporary adhesion part that divides the bag into two chambers, as a laminate forming the bag, from the outside to the inside, at least,
A heat resistant substrate film or heat seal film, or a laminate in which a heat resistant substrate film, a gas barrier film and a heat seal film are sequentially laminated is used, and particularly the heat seal film is used. An unstretched polypropylene resin film is used as the flexible film, and a temporary adhesive portion is provided via an easy peelable tape.
Using a tape made of a resin composition containing a polypropylene-based resin as a main component as the adhesive tape, and divided into two chambers by providing a temporary adhesion portion, and each of the two chambers divided by the temporary adhesion portion. When a retort pouch was manufactured by storing different kinds of contents in each chamber, each chamber was sufficiently partitioned at the time of distribution, etc., and the temporary adhesion part was peeled off at the time of use so that different kinds of contents could be mixed. The present invention has been completed by finding that a retort pouch made of a double bag for mixing can be produced.

That is, according to the present invention, a bag portion is formed by providing a seal portion on the peripheral portion of the outer peripheral end portion, and the temporary adhesive portion that divides the bag body into two chambers is easy peelable. Provided via tape,
Furthermore, it is a double bag for mixing, in which different kinds of contents are stored in each of the two chambers partitioned by the temporary adhering part, and the temporary adhering part is peeled off at the time of use to mix the different kinds of contents.
And the laminate constituting the double bag is, from the outside to the inside, at least a heat resistant base film and a heat sealable film, or a heat resistant base film, a gas barrier film and a heat seal. A retort pouch having a structure in which a flexible film is sequentially laminated.

Further, in the present invention, in the above retort pouch, an unstretched polypropylene resin film is used as a heat seal film, and an polypropylene tape is used as an easy peel tape. A retort pouch using a tape made of a resin composition containing a resin as a main component.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail below. First, in the above-mentioned present invention, the retort pouch according to the present invention will be described with reference to the drawings by exemplifying a few specific examples. Figs. 1 and 2 show a bag body constituting the retort pouch according to the present invention. FIG. 3 is a cross-sectional view showing an example of a layer structure of a laminate used for manufacturing, and FIG.
FIG. 4 is a plan view showing an example of the structure of the retort pouch according to the present invention using the laminated body shown in FIG. 1, and FIG. 4 is a sectional view taken along line YY ′ of the retort pouch shown in FIG. 3. First, in the present invention, as the laminate used for manufacturing the bag body constituting the retort pouch according to the present invention,
As shown in FIG. 1, a laminate A in which at least a heat resistant base film 1 and a heat sealable film 2 are sequentially laminated from the outside to the inside, or a heat resistant base film 1, gas barrier It is possible to use a laminated body B in which the flexible film 3 and the heat-seal film 2 are sequentially laminated. In the laminated body A or the laminated body B, an unstretched polypropylene resin film 3'is used as the heat-sealable film 2 in forming a temporary adhesive portion as described later. Further, the heat-sealable film 3 is preferably an unstretched polypropylene resin comprising a composition containing ethylene-propylene copolymer as a main component and an olefin rubber component added thereto. It is desirable to use film 3 ".

Next, in the present invention, an example of the structure of the retort pouch according to the present invention will be described by exemplifying the retort pouch manufactured by using the laminate A shown in FIG. As shown in FIG. 4, two sheets A, A of the above-prepared laminated body are prepared, and the surfaces of the heat-sealable film 2 (2 ′ or 2 ″) are overlapped so as to face each other, and then the outer periphery. Heat seal the periphery of the end
The bag portion is formed by forming the loop portion 4, and a temporary adhesive portion 5 that divides the bag portion into two chambers is provided at a predetermined position of the bag with an easing adhesive tape 6 interposed therebetween. It is provided by forming a seal portion 5'by sealing, and contents of different kinds 7 and 8 are stored in each of the two chambers partitioned by the temporary adhesive portion 5, and the temporary adhesive portion 5 is used at the time of use. This is to manufacture a mixing double bag C in which the constituent seal parts 5'are peeled off and the contents 6 and 7 of the different types can be mixed. In the above, various methods can be adopted as the method of filling and packaging the different types of contents 7 and 8. For example, the peripheral portion of the outer peripheral end is heat-sealed to form the seal portion 4. In this case, for example, one side on the right side in the vertical direction is used as an unsealed portion to form an opening, and the other peripheral portions on the upper and lower sides and on the left side are heat-sealed to seal the seal portion 4. And then a temporary adhesive portion 5 is formed at a predetermined position of the bag body, and then the two chambers are filled with different kinds of contents 7 and 8 from the above-mentioned opening, and then the unsealed portion of the opening is formed. By forming the seal portion 4 by heat-sealing the shell portion, the contents 7 and 8 can be filled and packaged in each of the two chambers. Thus, in the present invention, as shown in the plan view showing the use state of the retort pouch of FIG. 5, the double bag C for mixing produced above is subjected to a retort processing treatment, that is, a heat and pressure sterilization treatment. Then, the retort pouch according to the present invention is manufactured, and when the retort pouch is used, for example, by applying pressure or the like from the outside, or by holding the part of the temporary adhesion part 5 in both hands and pulling it on both sides, The portions are peeled off, and the contents 7 and 8 of different kinds stored in the two chambers are mixed as shown by an arrow P, and then the retort pouch (not shown) is used, for example, using scissors or the like. For example, it is used for food or the like by cutting a predetermined portion and opening it. The example given above is an example of the retort pouch according to the present invention, and the present invention is not limited thereto. Needless to say, the laminated body B shown in FIG. 2 can be used in the same manner as described above to produce a retort pouch made of a double-blending bag according to the present invention.

Next, in the above-mentioned present invention, the materials constituting the retort pouch according to the present invention will be described. First, as the heat-resistant base film according to the present invention, the basic materials constituting the retort pouch according to the present invention will be described. Since it becomes a material and can withstand retort processing,
Use of a resin film or sheet having excellent properties in mechanical, physical, chemical, etc., especially, having heat resistance, excellent strength, rigidity, etc. Specifically, for example, a tough resin such as a polyester resin, a polyamide resin, a polyaramid resin, a polypropylene resin, a polycarbonate resin, a polyacetal resin, a fluorine resin, or the like. Films or sheets can be used. Thus,
As the resin film or sheet, any of an unstretched film and a stretched film stretched in a uniaxial or biaxial direction can be used. Further, in the present invention, the thickness of the resin film or sheet should be such that it has heat resistance, is excellent in strength, rigidity, etc., and can be kept to the minimum necessary in terms of various robustness. The most desirable range is about 10 μm to 50 μm, preferably about 12 μm to 25 μm.

Next, in the present invention, a gas barrier film will be described. As such a film, a material having a property of blocking light such as sunlight or a property of not transmitting water vapor, water, gas, etc. is used. This may be a single base material or a composite base material in which two or more kinds of base materials are combined. Specifically, for example, a resin film having an aluminum foil having a light-shielding property and a barrier property or a vapor deposition film thereof,
Silicon oxide having barrier properties, a resin film having a vapor deposited film of an inorganic oxide such as aluminum oxide, water vapor,
It has a film or sheet of resin such as low density polyethylene, medium density polyethylene, high density polyethylene, linear low density polyethylene, polypropylene, ethylene-propylene copolymer, etc. having a barrier property against water, etc., and a gas barrier property. Polyvinylidene chloride, polyvinyl alcohol,
A film or sheet of a resin such as a saponified ethylene-vinyl acetate copolymer, a colorant such as a pigment on the resin, and the like,
It is possible to use films or sheets of various colored resins having a light-shielding property obtained by adding desired additives and kneading to form a film. These materials can be used alone or in combination of two or more. The thickness of the above-mentioned film or sheet is arbitrary, but is usually preferably about 5 μm to 300 μm, more preferably about 10 μm to 100 μm. Further, in the above, an aluminum foil having a thickness of about 5 μm to 30 μm, and an aluminum or inorganic oxide deposited film having a thickness of about 100 to 2000 mm can be used. Examples of the resin film supporting the above-mentioned vapor-deposited film include a polyester film, a polyamide film, a polyolefin film, a polyvinyl chloride film, a polycarbonate film, a polyvinylidene chloride film, a polyvinyl alcohol film, and an ethylene-acetic acid film. Saponified vinyl copolymer films and the like can be used. In the above,
When the above-mentioned resin film supporting the vapor-deposited film becomes a laminate or a bag, the resin film may function as a heat-resistant substrate film.

Next, in the present invention, a heat-sealable film will be described.
As long as it can withstand retort processing and can be melted by heat and fused to each other, specifically, for example, low density polyethylene, medium density polyethylene, high density polyethylene, linear low density polyethylene, polypropylene, Ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid copolymer, ethylene-ethyl acrylate copolymer, ethylene-methacrylic acid copolymer, ethylene-propylene copolymer, methylpentene polymer, polybutene Films or sheets of resins such as polymers, acid-modified polyolefin resins, and the like can be used. The thickness of the film is 10 μm to 3
It is desired to be around 00 μm, preferably around 20 μm to 100 μm.

Among the above-described heat-seal films, in the present invention, it is particularly preferable to use an unstretched polypropylene resin film having a heat-seal property. This is because, as will be described later, when the temporary adhesive portion is formed via the easy peeling tape, the adhesiveness of the portion can be easily adjusted to make it easily peelable. Is. Further, in the present invention, the above-mentioned heat
Among the unstretched polypropylene-based resin films having tosile property, specifically, ethylene-propylene copolymer is the main component, to which an olefin-based rubber component is added, and further a desired additive is optionally added. Then, it is desirable to use an unstretched polypropylene resin film having a heat seal property, which is obtained by forming a film by kneading the composition, for example, by extrusion molding. In the above, as the ethylene-propylene copolymer, for example, ethylene-propylene block copolymer, ethylene-propylene random copolymer and the like can be used, and thus, as the copolymerization ratio of ethylene and propylene, propylene is used. Of about 80 to 97 mol% can be used. Further, in the above, examples of the olefin rubber component include C ₂ to C such as isoprene rubber, inbutylene rubber, and ethylene-propylene rubber.
One or more olefinic rubber components composed of C ₄ may be used. Therefore, in the present invention, the use of such olefinic rubber components mainly improves the cold shock resistance of the retort product. It is used to achieve the effect of causing.

In addition, in the above composition, the composition comprising the above-mentioned ethylene-propylene copolymer as a main component and an olefinic rubber component added thereto may further contain other additives such as linear low density polyethylene. Other resins, fillers, dispersants, colorants, etc. can be optionally added. Next, in the present invention, the mixing ratio of the ethylene-propylene copolymer and the olefin rubber component is the ethylene-propylene copolymer-100.
5 to 30 parts by weight of olefinic rubber component relative to parts by weight,
It is preferable to add 10 to 20 parts by weight. In the above, if it is 5 parts by weight or less, the cold shock resistance of the retort product tends to be deteriorated, which is not preferable, and if it is 30 parts by weight or more, the seal portion in the peripheral portion of the outer peripheral end portion is not preferable. It is not preferable because it has low seal strength, low heat resistance, and tends to cause internal fusion during retorting. In the present invention, the unstretched polypropylene resin film has a thickness of about 10 μm to 100 μm, preferably 30 μm.
m to 70 μm is desirable. Next, in the present invention, the non-stretched polypropylene resin film as described above is used as a heat-sealable film to form a temporary adhesive portion via an easy peelable tape. It has an advantage that the adhesiveness at the time of providing can be adjusted, a good seal part can be formed, and easy peelability can be exhibited.

By the way, since the retort pouch is usually subjected to severe physical and chemical conditions, strict packaging suitability is required for the packaging material constituting the retort pouch, and the deformation preventing strength, Drop impact strength, anti-pinhoe
Properties, heat resistance, sealing, quality maintenance, workability, hygiene,
Various conditions such as others are required, and for this reason, in the present invention, in addition to the above-mentioned materials, other materials satisfying the above-mentioned conditions can be arbitrarily used. Specifically, for example, low density polyethylene, medium density polyethylene, high density polyethylene, linear low density polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid. Ethyl copolymer, ethylene-
Acrylic acid or methacrylic acid copolymer, methylpentene polymer, polyolefin resin such as polybutene resin, polyvinyl chloride resin, polyvinyl acetate resin, polyvinylidene chloride resin, vinyl chloride-vinylidene chloride copolymer, Poly (meth) acrylic resin, polyacrylonitrile resin, polystyrene resin, acrylonitrile-styrene copolymer, acrylonitrile-butadiene-styrene copolymer, polyester resin, polyamide resin, polycarbonate resin, Polyvinyl alcohol
Film, sheet of known resin such as ethylene, saponified ethylene-vinyl acetate copolymer, fluorine resin, diene resin, polyacetal resin, polyurethane resin, etc. is arbitrarily selected and used. be able to. Other,
For example, a film such as cellophane, synthetic paper, or the like can be used. In the present invention, the above-mentioned film or sheet can be used in any of unstretched and uniaxially or biaxially stretched. The thickness is arbitrary, but can be selected from a range of several μm to 300 μm. Further, in the present invention, the film or sheet may be any film such as an extruded film, an inflation film, or a coating film.

Next, in the above-mentioned present invention, a method for producing a laminated body using the above-mentioned materials will be explained. As such a method, a usual packaging material is laminated.
Method such as wet lamination method, dry lamination method, solventless dry lamination method, extrusion lamination method, T-die coextrusion molding method, coextrusion lamination method, etc. You can Thus, in the present invention, when performing the above-mentioned lamination, the film can be subjected to a pretreatment such as a corona treatment and an ozone treatment, if necessary. Type), polyethyleneimine type, polybutadiene type, organic titanium type anchor, etc.
Coating agent, or known anchor coating agent such as polyurethane-based, polyacrylic-based, polyester-based, epoxy-based, polyvinyl acetate-based, cellulose-based, etc. laminate adhesive, and the like Agents and the like can be used.

Further, in the present invention, as the easy peelable tape, the heat-sealing film on the innermost surface constituting the laminate used in the production of the above-mentioned bag body. And has adhesiveness by heat-sealing, but the adhesiveness shows an adhesive force weaker than the adhesive force which constitutes the above-mentioned seal portion 4,
It is possible to use a resin tape having a property of peeling earlier than the seal portion 4 by the action of an external force. For example, the heat seal of the innermost surface constituting the above-mentioned laminated body can be used. It is possible to use the same kind of resin film or a resin tape made of different materials. By the way, as the heat-sealable film of the innermost layer constituting the laminate used when producing the bag for retort pouches, an unstretched polypropylene resin film having heat-sealability is usually used. It is what is done. Therefore, also in the present invention, an unstretched polypropylene-based resin film having a heat seal property is mainly used as the innermost heat seal film constituting the laminate. hand,
From the relationship with the film, it is necessary to consider the easiness of peelability. In the present invention, the easing tape has an innermost heat sheet constituting the above-mentioned laminate.
The film does not constitute an image peelable tape from a film of the same quality as the unstretched polypropylene resin film having a heat-sealing property as a flexible film, but contains a polypropylene resin as a main component, It is preferable to use a resin tape obtained by film-forming a resin composition obtained by blending this with another resin. For example, to polypropylene resin, for example, polyethylene resin, polyisoprene resin, polybutene resin, cyclic olefin resin, polystyrene resin, one or more kinds of other resins are added, and if necessary, other It is desirable to use a modified polypropylene resin tape obtained by film-forming a resin composition obtained by adding the above-mentioned additive and thoroughly kneading. In the above, the polypropylene resin,
The proportion of the polyethylene-based resin or the like is preferably 50 to 95 parts by weight, and more preferably 70 to 90 parts by weight, based on 100 parts by weight of the polypropylene-based resin. Further, in the above, the thickness of the modified polypropylene resin tape is about 10 to 100 μm, preferably 20 to 50 μm.
You can use the ones of the order. In the present invention,
By using the modified polypropylene resin tape as described above, an unstretched polypropylene resin having a heat seal property as a heat seal film of the innermost layer constituting the above-mentioned laminate. When the seal portion 5'constituting the temporary adhesive portion 5 is formed by heat-sealing with the film, the seal strength is adjusted to give the easiness of peeling. It has an advantage that the peelability can be easily adjusted.

The above-mentioned easing tape will be described in more detail. FIG. 6, FIG. 7 and FIG. 8 are sectional views showing the constitution of the easing tape according to the present invention. FIG. 6 is a view showing the modified polypropylene resin tape 10 as shown in FIG. 6 or one surface of the modified polypropylene resin tape 10 as shown in FIGS. 7) or both surfaces (FIG. 8), in consideration of the adhesiveness with the unstretched polypropylene-based resin film having the heat-sealing property that constitutes the innermost layer of the laminate, polypropylene-based resin films 11, 11 It is possible to use a modified polypropylene resin tape having a laminated structure of

Next, in the present invention, the bag body constituting the retort pouch will be described. As a bag-making method, a laminate produced by using the above-mentioned materials is used and its heat seal is used. Unstretched polypropylene resin film as a flexible film
Alternatively, the two sheets are overlapped, and the peripheral end portion of the outer periphery thereof is, for example, a side seal type, a two-way seal type, a three-way seal type.
Type, four-sided seal type, envelope type seal type, gas palm type seal type
A bag-shaped body that is heat-sealed according to the heat-sealing type such as a roll type (pillow-sealing type), a pleated sealing type, a flat bottom sealing type, a square bottom sealing type, and the like. And a temporary adhesive portion that divides the bag into two chambers is formed at a predetermined position of the bag through an easing peel tape to form a double bag for mixing. It can be manufactured. In addition, in the present invention, the bag body may be, for example, a self-supporting packaging bag (standing pouch).

In the above, a method of heat-sealing the peripheral portion of the outer peripheral end portion when forming the bag body and a method of heat-sealing when providing a temporary bonding portion for partitioning the bag body into two chambers. Examples of the method include bar seal, rotary roll seal, belt seal, impulse seal, high frequency seal, and ultrasonic seal.
Can be performed by a known method such as Thus, in the present invention, the conditions for heat-sealing the peripheral portion of the outer peripheral end portion and the temporary adhesive portion when forming the bag are, for example,
Heat seal temperature 170 to 250 ° C., preferably 20
0 to 220 ° C., pressure 0.5 to 10 Kg / cm ² , preferably 1 to 3 Kg / cm ² , heating and pressing time 0.3 to 30
The seal is formed by heat-sealing under the condition of about 0.5 to 3 seconds. That is, in the present invention, as a heat seal condition, a condition of heat seal the peripheral portion of the outer peripheral end when the bag body is formed,
Heat sheet when providing a temporary adhesive part that divides the bag into two chambers
The conditions for heat sealing are those under which heat sealing is performed under almost the same conditions, but the seal portion provided on the peripheral portion of the outer peripheral end is used as an inner layer when the bag body is constructed. Since the heat sealing is performed between the surfaces of the heat sealing film, a strong sealing portion can be formed. On the other hand, the sealing portion provided as the temporary adhesion portion is an eel peel. Since the heat-sealing is performed by interposing a heat-sensitive tape, the heat-sealing film surface as an inner layer and the easy-peeling tape surface are opposed to each other when the bag is constructed. The material is denatured and heat-sealed to adjust the adhesiveness thereof, thereby relatively weakening the seal strength and making it easy peelable as easiness of peeling. is there.

By the way, in the present invention, the seal shape of the seal portion provided in the peripheral portion of the outer peripheral end is as follows.
Although the seal width may be a linear shape with a width of about 3 to 15 mm,
The seal shape of the temporary adhesive portion provided via the easy peelable tape may be a straight shape having a predetermined seal width as shown in the above-mentioned figure, but other than that, filling packaging is also possible. The ease of peeling of the temporary adhesive portion can be adjusted by adjusting the seal shape, size, seal width, etc., depending on the type of contents to be treated. FIG. 8 is a plan view showing a few examples of the seal shape of the temporary adhesive portion according to the present invention.
As shown in FIG. 9, this is an example in which the seal width of the temporary adhesive portion is changed, and an easing peelable tape 6 is interposed in a predetermined region of the bag body so that the outer peripheral end portion thereof is At the left end and right end of the peripheral part,
Seal portions 5'and 5'having a line width of 5 to 15 mm are formed respectively, and a seal portion 5 "having a line width of 1 to 5 mm is formed on the other portions, and thus the seal is formed. By changing the sealing line width of the parts 5 ', 5'and the sealing part 5 "and narrowing the line width of the central sealing part 5", the sealing strength in that part Is weakened, and the temporary adhesion portion 5 is formed so as to maintain easy peelability as compared with other portions.

Alternatively, as shown in FIG. 10, the seal width of the temporary adhesive portion is changed, and a projecting seal portion is formed on the seal portion having a narrower seal width. Yes, as described above, in a predetermined area of the bag body, the easing peelable tape 6 is interposed, at the left end portion and the right end portion of the peripheral portion of the outer peripheral end portion,
Seal portions 5'and 5'having a line width of 5 to 15 mm are formed respectively, and a seal portion 5 "having a line width of 1 to 5 mm is formed on the other portions, and further the seal portion 5 is formed. A projecting seal portion R is formed in the central portion of the ″, and the line width to be sealed between the sealing portions 5 ′ and 5 ′ and the sealing portion 5 ″ is changed, and the central portion thereof is formed. By narrowing the line width of the seal portion 5 ″ of this portion, the seal strength at that portion is weakened to maintain easy peelability as compared with other portions, and further, the protrusion-shaped seal is provided. -R part R
By this, the starting point of the easy peeling property is held and the temporary adhesion portion 5 is configured.

Further, as shown in FIG. 11, the seal width of the temporary adhesive portion is changed, and a plurality of projecting seal portions are formed on the seal portion having a narrower seal width. As described above, the easing tape 6 is interposed in a predetermined area of the bag body, and the left end portion and the right end portion of the peripheral portion of the outer peripheral end portion thereof,
Seal portions 5'and 5'having a line width of 5 to 15 mm are formed respectively, and a seal portion 5 "having a line width of 1 to 5 mm is formed on the other portions, and further the seal portion 5 is formed. Two projecting seal portions R, R are formed in the central portion of the ″, and thus the line width for sealing between the seal portions 5 ′, 5 ′ and the seal portion 5 ″ is formed. Change
By narrowing the line width of the seal portion 5 "in the central portion, the seal strength in that portion is weakened, the peeling property is maintained as compared with other portions, and the protrusion shape is further improved. With the seal portions R, R, the starting point of the easy peeling property is held and the temporary adhesive portion 5 is configured.

With respect to the temporary adhesive portion 5 as described above, its forming position, size, seal shape, seal width, etc. can be arbitrarily changed. For example, the forming position thereof is two in the bag body. As long as the chamber can be formed and the contents of another kind can be filled and packaged, it can be formed at any position of the bag, and the seal part 5 ′ constituting the temporary adhesion part 5 can be formed. ,
The size, length, seal width, etc. of 5 ', the seal portion 5 "can be arbitrarily changed. Further, although not shown, a temporary adhesive portion can be formed in the vertical direction of the bag body. For example, the seal portions 5 ′ and 5 ′ and the seal portion 5 ″ that form the temporary adhesion portion 5
If the size of the seal is changed and the seal portions 5'and 5'are enlarged, when the temporary adhesive portion is peeled off and one of the contents contains a solid substance when mixing the contents of another type, The seal portions 5 "and 5'are peeled off but the seal portions 5'and 5'are not peeled off. As a result, the seal portions 5'and 5'act as a barrier to allow the liquid substance to pass therethrough. The solid substance has the effect of not moving.

Next, in the present invention, a method of filling and packaging the contents in the bag will be described. When the bag is manufactured, for example, a seal portion is formed at the peripheral portion of the outer peripheral end and An unheated seal part is provided in a part to form an opening, and a temporary adhesive part for partitioning the two chambers is further formed in the bag body by interposing an easing tape. The seal is formed by forming a seal, and then each of the two chambers is filled from the above-mentioned opening with, for example, another kind of food such as mixed and eaten, and then the above-mentioned opening is formed. It is possible to produce a retort pouch according to the present invention by heat-sealing to form a seal portion and then subjecting to retort processing, that is, heat and pressure sterilization treatment according to a conventional method. Incidentally, the retort pouch produced above, when using, for example,
It is possible to cut and open a predetermined portion of the bag body using scissors, a cutter or the like, transfer the contents to tableware or the like, and use it for eating or the like.

In the above, the contents to be filled and packed are, for example, a curry, a stew, a spaghetti sauce,
We can give food and drink such as bowl of rice and others.

[0026]

The present invention will be described more specifically with reference to the following examples. Example 1 Stretched polyethylene terephthalate film having a thickness of 12 μm, stretched nylon film having a thickness of 15 μm and thickness of 15 μm
m polyvinylidene chloride film and 70 μm thick unstretched polypropylene film were dry laminated in this order with a polyurethane adhesive to produce a laminate having the following constitution. Stretched polyethylene terephthalate film / Adhesive layer / Stretched nylon film /
Adhesive layer / polyvinylidene chloride film / adhesive layer / unstretched polypropylene film The above unstretched polypropylene film was prepared by using a composition containing 17 parts by weight of isoprene rubber to 100 parts by weight of ethylene-propylene block copolymer. Then, this was extruded to form a film. Next, two sheets of the above-mentioned laminated body were prepared, and the unstretched polypropylene films were laminated so as to face each other, and then, as a pouch size, 280 mm long × 1 horizontal
50 mm, and the temperature around the outer edge of the pouch is 20
At 0 ° C., a pressure of 1.2 kg / cm ² , and a heating and pressurizing time of 1.5 seconds, a heat seal was performed, leaving an opening (vertical side) for filling the contents, and sealing. A seal portion having a width of 10 mm was formed. Further, the vertical length of 280 mm of the pouch is 130 m
It is divided into m and 150 mm, and an easing tape is interposed in that portion, and heat-sealed under the same heat-sealing conditions as the above-mentioned heat-sealing conditions. , The width of the seal is 3mm
In addition, a temporary adhesive portion (see FIG. 2) was formed by connecting the seal portions at the left end portion and the right end portion to each other to produce a double bag for mixing. In addition, as the above-mentioned easing tape, 20 parts by weight of a polyethylene resin is added to 100 parts by weight of a polypropylene resin, and a small amount of a filler is added and sufficiently kneaded. Thickness 30 obtained by forming a resin composition into a film
A μm modified polypropylene resin tape was used. Then, fill the larger bag of the double bag for mixing produced above with the ingredient, and fill the smaller bag with the liquid from the openings, respectively, and perform nitrogen flush packaging, and then fill the opening for filling. Is heat-sealed under the same conditions as the heat-sealing of the peripheral portion of the outer periphery of the pouch to form a seal portion, and then sterilization is performed at 120 ° C. for 17 minutes. Process,
A retort pouch was manufactured. When the retort pouch produced above was pressed with 10 kg, the seal of the temporary adhesion part
And the contents were mixed. At that time, no rupture of the bag was found in other parts of the bag.

Example 2 A retort pouch was manufactured in the same manner as in Example 1 except that the shape of the temporary adhesive portion was the same as that shown in FIG. 9 in Example 1 described above. When pressing 8kg on the retort pouch produced above,
And the contents were mixed. At that time, no rupture of the bag was found in other parts of the bag.

Example 3 A retort pouch was manufactured in the same manner as in Example 1 except that the shape of the temporary adhesive portion in Example 1 was the same as that shown in FIG. When the retort pouch manufactured above was pressed at 8 kg, the protruding seal portion of the temporary adhesive portion became the peeling starting point, and the seal portion of the narrower portion was sealed.
And the contents were mixed. At that time, no rupture of the bag was found in other parts of the bag.

[0029]

As is apparent from the above description, according to the present invention, a bag is constructed by providing a seal portion around the outer peripheral end portion, and the bag is divided into two chambers by temporary bonding. When providing the portion, as a laminate constituting the bag body, from the outer side to the inner side, at least a heat resistant substrate film and a heat sealable film, or a heat resistant material film, a gas barrier film and a heat insulating film -Using a laminate in which tosyl films are sequentially laminated, in particular using an unstretched polypropylene-based resin film as the heat-sealing film,
In addition, a temporary adhesive portion is provided through an easing peel tape,
In particular, a tape made of a resin composition containing a polypropylene-based resin as a main component is used as the easiness peeling tape to provide a temporary bonding portion and divide the chamber into two chambers. The contents of different types are stored in each of the two chambers divided by the parts, and then the retort processing is performed so that each chamber is sufficiently divided at the time of distribution, etc. That is, it is possible to manufacture a retort pouch which is composed of a double bag for mixing in which contents can be mixed.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of a layer structure of a laminate used for manufacturing a bag body constituting a retort pouch according to the present invention.

FIG. 2 is a cross-sectional view showing an example of a layer structure of a laminate used for manufacturing a bag body constituting the retort pouch according to the present invention.

FIG. 3 is a perspective view showing an example of the structure of a retort pouch according to the present invention using the laminated body shown in FIG.

4 is a sectional view taken along line YY 'of the retort pouch shown in FIG.

5 is a plan view showing a usage state of the retort pouch shown in FIG. 3. FIG.

FIG. 6 is a cross-sectional view showing an example of the structure of an easing peel tape according to the present invention.

FIG. 7 is a cross-sectional view showing an example of the structure of an easing peel tape according to the present invention.

FIG. 8 is a cross-sectional view showing an example of the structure of an easing peel tape according to the present invention.

FIG. 9 is a plan view showing an example of the seal shape of the temporary adhesive portion according to the present invention.

FIG. 10 is a plan view showing an example of the seal shape of the temporary adhesive portion according to the present invention.

FIG. 11 is a plan view showing an example of the seal shape of the temporary adhesive portion according to the present invention.

[Explanation of symbols]

 1 Heat Resistant Substrate Film 2 Heat Sealing Film 3 Gas Barrier Film 3'Unstretched Polypropylene Resin Film 3 "Unstretched Polypropylene Resin Film 4 Seal Part 5 Temporary Adhesive Part 6 Eager Tape 7 Contents 8 Contents A Laminate B Laminate C Double bag for mixing

Claims (10)

[Claims] 1. A bag portion is formed by providing a seal portion around the outer peripheral end portion, and a temporary adhesive portion that divides the bag body into two chambers is provided with an aging peelable tape. The two kinds of mixing chambers, each of which is provided via the above-mentioned temporary adhering section and stores the different type of content in each of the two chambers, and the temporary adhering section can be peeled off at the time of use to mix the different type of content. A laminated body that is a bag and that constitutes the double-bag, from the outside toward the inside, at least,
A retort pouch comprising a heat resistant substrate film and a heat seal film, or a structure in which a heat resistant substrate film, a gas barrier film and a heat seal film are sequentially laminated. 2. The retort pouch according to claim 1, wherein the heat-sealable film is an unstretched polypropylene resin film. 3. The heat-sealable film is ethylene-based.
The retort pouch according to claim 1 or 2, wherein the retort pouch comprises a propylene copolymer as a main component and an unstretched polypropylene resin film made of a composition obtained by adding an olefin rubber component to the propylene copolymer. 4. The retort pouch according to claim 3, wherein the ethylene-propylene copolymer is composed of an ethylene-propylene block copolymer or an ethylene-propylene random copolymer. 5. The retort pouch according to claim 3, wherein the olefin rubber component is one or more of isoprene rubber, isobutylene rubber, and ethylene-propylene rubber. 6. The composition contains 5 to 3 parts by weight of an olefinic rubber component based on 100% by weight of ethylene-propylene copolymer.
The retort pouch according to claim 3, which is a composition obtained by adding 0% by weight. 7. The retort pouch according to claim 2 or 3, wherein the unstretched polypropylene resin film has a thickness of 30 to 100 μm. 8. The tape according to claim 1, wherein the edible peel tape is a tape made of a resin composition containing a polypropylene resin as a main component. 4,
The retort pouch described in 5, 6, or 7. 9. A heat seal temperature of 170 to 70 is provided between a portion of a seal portion provided in the peripheral portion of the outer peripheral end portion and a portion of the temporary adhesive portion.
The heat-sealing is performed under the conditions of 250 ° C., a pressure of 0.5 to 10 kg / cm ² , and a heating and pressurizing time of 0.3 to 30 seconds to form a seal portion. 2, 3,
The retort pouch according to 4, 5, 6, 7 or 8. 10. The heat seal shape of the temporary adhesive portion has a line width of 2 to 15 mm at the upper and lower ends or the left and right ends of the peripheral portion of the outer peripheral end of the bag body, 3. A temporary adhesive portion is formed by heat-sealing the other portion with a line width of 1 to 5 mm to form a temporary adhesive portion.
The retort pouch according to 3, 4, 5, 6, 7, 8 or 9.