JP2012250724A - Package for heat treatment, and packaged food with food material stored therein - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a package that can mix two or more contents with each other, and allowing the obtained mixture to be hardly scattered outside by executing the heat treatment while the contents are separately stored, and a packaged food with a food material being stored therein.SOLUTION: The package for heat treatment includes a self-standing outer bag having a first easily unsealable seal part for releasing the internal pressure increased by the heat treatment, and an inner bag which is fixed inside the outer bag, and has a second easily unsealable seal part for releasing the internal pressure increased by the heat treatment. When the package is set in a self-standing state with contents being stored in both bags, the content stored in the inner bag and the second easily unsealable seal part are located above the upper level of the content stored in the outer bag. By executing the heat treatment in this state, the second easily unsealable seal part is unsealed, both contents are mixed with each other to form a mixture, and the first easily unsealable seal part is located above the upper level of the mixture.

Description

  The present invention relates to a package that heat-processes the contents, and a packaged food in which ingredients are stored. More specifically, the present invention is, for example, a package for heat-treating with a microwave oven in a state where two or more foods are separately housed, and mixing both of them while heat-treating, and the food is housed therein. Related to packaged food.

  2. Description of the Related Art Conventionally, many packaged foods that have been cooked or semi-cooked in a heat-resistant plastic packaging bag and heat-treated with a microwave oven immediately before eating are provided on the market.

  However, when this packaged food is heat-treated with a microwave oven while the contents are hermetically packaged, the moisture contained in the contents boils or the water vapor and air inside the bag thermally expand, causing the inside of the bag to When the pressure increases, the bag may rupture and the contents may scatter, and the scattered contents may contaminate the inside of the microwave oven.

  Therefore, before cooking in a microwave oven, a small hole was made in the bag in advance to suppress an increase in internal pressure and prevent the bag from bursting.

  However, in this method, the water vapor generated by the heat treatment is immediately released to the outside of the bag, and the steaming cooking effect by the water vapor is reduced, and the food inside the bag is dried and the taste is deteriorated. there were.

  As a package that solves the problem, Patent Document 1 includes a first joint portion that is brought into contact with each other on the same surface side with a plastic film and joined in a palm shape by heat sealing with a predetermined width. In the package body in which the contents for heat treatment are sealed and packaged, the first joint portion is provided to be shifted to one side portion of the package body, and the internal pressure of the package body is increased by heating. Sometimes, a heat-treatable packaging body is described which is an easy-open seal that performs the relief pressure.

  Further, in recent years, bags having a self-supporting property have been increasingly used for packaging packaged foods that are heat-treated with a microwave oven. If the bag is self-supporting, it will not be easy to fall down even if fluid content moves, but the product will be more noticeable when displayed, and the display space can be minimized. is there.

  However, even in the case of a self-supporting bag, as in the case described above, the internal pressure of the bag may rise, the bag may burst, and the contents may scatter, and the contents scattered may contaminate the microwave oven. I had to do it.

  As a packaging body that solves the problem, Patent Document 2 includes a palm joint where the same surfaces are brought into contact with each other by a plastic film and joined in a palm shape by heat sealing with a predetermined width, and is self-supporting at the bottom. Forming a means for sealing and packaging the contents for heat treatment in the package, wherein the palm joint is positioned above the upper surface of the stored contents when the package is made self-supporting. In addition, there is described a heat-treatable packaging body that is an easy-open seal that performs relief when the internal pressure of the packaging body increases due to heating.

  On the other hand, in these packaged foods, foods cooked and seasoned in advance are sealed and packaged. In other words, the ingredients of such packaged foods are heated during cooking and reheated in a microwave oven, so that the cells of the ingredients are broken, compared to the case of cooking raw ingredients. There is a problem that the taste is inferior.

  Therefore, a method has been studied in which food ingredients and seasoning seasonings are packaged separately and communicated when they are heat-treated in a microwave oven.

  For example, Patent Document 3 discloses a food packaging bag for cooking in a microwave oven in which ingredients and seasoning liquid are separately stored via a weakly fused part, where the weakly fused part is located above the ingredient storing part. The seasoning liquid storage part is placed on the weakly fused part, and a deaeration hole or a deaeration hole forming part is provided in at least one place of the food storage part, and the internal pressure of the entire bag is reduced by heating the microwave oven. A microwave oven cooking bag is described in which the weakly fused portion is peeled off when the temperature is sufficiently raised, and the deaeration hole forming portion is opened.

  Also, in Patent Document 4, cooking is performed by preventing the bursting of the bag by releasing the internal pressure from the internal pressure relief provided in the bag when the food is heated using a microwave oven in a sealed state. A cooking bag for a microwave oven, the cooking bag comprising an outer bag and a plurality of inner bags separately or integrally housed in the outer bag, wherein the inner pressure relief is provided in the outer bag and the inner bag. Each part is provided, and after starting cooking using a microwave oven, the internal pressure relief part provided in each of the plurality of inner bags is earlier than the internal pressure relief part provided in the outer bag, And the cooking bag for microwave ovens provided so that an internal pressure might be released at a respectively separate timing is described.

JP-A-9-150864 JP 2000-185777 A JP 2009-96546 A JP 2010-208696 A

  However, in the microwave oven cooking bag of Patent Document 3, the deaeration hole forming part formed in the food storage part is located below the weakly fused part that communicates the food and seasoning liquid. If it opens, when a weak melt | fusion part peels after that and a seasoning liquid falls to a foodstuff storage part, there existed a problem that a seasoning liquid would scatter to the exterior. Moreover, in the microwave oven cooking bag of patent document 3, it was difficult to mix 3 or more types of contents, separately heat-processing.

  In the microwave oven cooking bag of Patent Document 4, the internal pressure relief portion provided in the inner bag must be provided so as to release the internal pressure at an earlier time point than the internal pressure relief portion provided in the outer bag. It is difficult to control if the contents are different. If the order of releasing the internal pressure is reversed, like the microwave cooking bag of Patent Document 3, there is a problem that the food stored in the inner bag scatters outside. . Moreover, in the cooking bag for microwave ovens of patent document 4, since the outer bag and the inner bag are arranged at substantially the same height, the food stored in the inner bag remains in the inner bag, and the taste is not constant. There was also a problem.

  Accordingly, the present invention is a package that can be mixed while being heat-treated in a state where two or more contents are separately stored, and the resulting mixture is less likely to splash outside, and a package in which ingredients are stored. The purpose is to provide food.

The package for heat treatment according to the present invention has a self-supporting outer bag formed with a first easy-open seal part that releases the pressure when the internal pressure is increased by the heat treatment,
A package for heat treatment having an inner bag formed with a second easily-openable seal portion that is fixed inside the outer bag and releases the pressure when the internal pressure is increased by heat treatment,
When the contents are stored in the inner bag and the outer bag, respectively, the contents stored in the inner bag and the second easy-open seal part are stored in the outer bag. Located above the top of the contents,
By heating in that state, the second easy-open seal part is opened, the contents stored in the inner bag fall on the contents stored in the outer bag, and both contents are Become a mixed mixture,
The first easy-open seal part is located above the upper surface of the mixture.

  Moreover, the foodstuff which heat-processes the packaged food which concerns on this invention in the inner bag and outer bag of said package for heat processing, respectively.

  According to the present invention, a package that can be mixed while being heat-treated in a state where two or more contents are separately stored, and the resulting mixture is less likely to splash outside, and a package in which ingredients are stored. Food can be provided.

It is a typical perspective view which shows the structure in one Embodiment of the package for heat processing which concerns on this invention. It is a typical perspective view which shows the structure of the outer bag in one Embodiment of the package for heat processing which concerns on this invention. It is a typical enlarged view which shows the structure of the 1st easily openable seal part in one Embodiment of the package for heat processing which concerns on this invention. It is a schematic plan view which shows the state which fixed the inner bag inside the outer bag in one Embodiment of the package for heat processing which concerns on this invention, (a) fixed the inner bag with the top seal part of the outer bag. A state is shown, (b) shows the state which fixed the inner bag by the side part of the outer bag. It is a typical top view which shows the shape of the inner bag in one Embodiment of the package for heat processing which concerns on this invention.

<Package for heat treatment>
One Embodiment of the package for heat processing which concerns on this invention is described, referring drawings as needed. The package for heat treatment according to the present invention can be used, for example, when heat-treating contents such as food with a microwave oven, and in particular, mixes while heat-treating in a state where two or more foods are separately stored. It is suitable for.

  As shown in FIG. 1, the heat treatment packaging body according to the present invention has a self-supporting outer bag 10 and an inner bag 20 fixed therein. The outer bag 10 is provided with a first easy-open seal part 11 that releases the pressure to the outside of the outer bag 10 when the internal pressure is increased by the heat treatment. The inner bag 20 is provided with a second easy-open seal part 21 that releases the pressure to the outside of the inner bag 20 (inside the outer bag 10) when the internal pressure increases due to heat treatment.

  As shown in FIG. 1, the heat treatment packaging body according to the present invention can be made independent in a state where predetermined contents 1 and 2 are stored in an outer bag 10 and an inner bag 20, respectively. At this time, the contents 2 stored in the inner bag 20 and the second easy-open seal part 21 are located above the upper surface of the contents 1 stored in the outer bag.

  When heat treatment is performed in this state, the internal pressure of the inner bag 20 is increased, and the second easy-open seal part 21 is opened. Then, the content 2 stored in the inner bag 20 falls on the content 1 stored in the outer bag 10 by its own weight, and a mixture in which the contents 1 and 2 are mixed is obtained. On the other hand, the internal pressure of the outer bag 10 is also increased by the heat treatment, and the first easy-open seal part 11 is also opened. However, since the first easy-open seal part 11 is located above the upper surface of the mixture in which the contents 1 and 2 are mixed, the mixture does not jump out.

  Thus, by using the heat-treatment packaging according to the present invention, two or more contents can be mixed while being heat-treated in a separately stored state, and the obtained mixture is scattered outside. It becomes difficult.

[Outer bag]
The outer bag 10 is formed of a plastic film, for example. The plastic film is preferably formed of a plastic material having heat resistance against heating of the microwave oven, considering that the heat treatment is performed by the microwave oven.

  Specific examples of such plastic materials include polyolefins such as polyethylene and polypropylene; halogenated polyolefins such as polyvinylidene chloride and polyvinylidene fluoride; polyvinyl alcohol; nylon 6, nylon 6,6, polymetaxylylene adipamide, and the like. Polyamides; Polyesters such as polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, polybutylene naphthalate; polyacrylates such as poly (meth) acrylate methyl, poly (meth) ethyl acrylate, poly (meth) acrylate butyl, etc. And a copolymer of monomers forming these; “(Meth) acryl” means methacryl or acryl. Specific examples of polyethylene include linear low density polyethylene, high pressure method low density polyethylene, high density polyethylene, and metallocene polyethylene. Specific examples of polypropylene include a homopolymer of propylene and a random or block copolymer of propylene and ethylene or 1-butene. Specific examples of the copolymer of monomers that form the above-described polymer include ethylene-vinyl alcohol copolymer, vinylidene chloride-acrylic ester copolymer, and the like.

  The plastic film is preferably stretched, and more preferably biaxially stretched.

  The plastic film may be a single layer or may be laminated in two or more layers by coextrusion or the like. Further, the plastic film may be a gas barrier composite film provided with an inorganic oxide thin film such as aluminum oxide or silicon oxide. This composite film can be obtained by heating and vaporizing a simple substance or a mixture of aluminum oxide or silicon oxide under vacuum and depositing on the surface of the film.

  The outer bag 10 should just have self-supporting property, and the shape and structure can be set suitably. For example, as shown in FIG. 2, the outer bag 10 of the heat treatment package shown in FIG. 1 has a rectangular rear film 31 and a bent portion 36 for forming the first easy-open seal portion 11. A square-shaped front film 32, a square-shaped upper film 33 having a bent portion 37 for forming the first easy-open sealable portion 11, and a square-shaped bottom film 34 folded in a mountain shape are stacked, and the outer periphery is overlapped. It is formed by heat sealing. At this time, since the notch 35 is formed in the bottom film 34, the back film 31 and the front film 32 can be integrated in the part.

  The outer bag 10 is formed with a first easily openable seal portion 11. The first easy-open seal part 11 has a function of releasing the pressure to the outside of the outer bag 10 when the internal pressure of the outer bag 10 is increased by the heat treatment. The first easy-open seal 11 can be easily opened by hand, and can be used as a portion for forming a take-out port for taking out contents from the inside of the outer bag 10 after the heat treatment.

  As shown in FIG. 1, the first easy-open seal part 11 is configured such that the same surface side of the outer bag 10 formed of a plastic film is brought into contact with each other and joined in a palm-like shape by heat sealing. Can do. More specifically, as shown in FIG. 2, the first easy-open seal part 11 can be formed by heat-sealing the bent part 36 of the front film 32 and the bent part 37 of the upper film 33. .

  In particular, as shown in FIG. 3, the first easy-open seal part 11 is a part of the outer bag 10 that is bent upward or downward, and an easy-open tape as necessary in a region away from the bent part. It is preferable that heat sealing is performed with the (not shown) inserted. The heat-sealed region 38 is preferably separated from the bent portion by 1 mm or more, for example. By carrying out like this, generation | occurrence | production of the crack with respect to a film vapor deposition layer can be prevented with external forces, such as bending and expansion-contraction, and the fall of the gas barrier property resulting from this crack can be suppressed.

  Furthermore, it is preferable that the first easily openable seal portion 11 is formed with an easily communicating portion 12 that is opened first when the internal pressure of the outer bag 10 is increased by the heat treatment. The easy communication part 12 may be a non-seal part or a cut part. The shape of the non-seal portion or the cut portion may be a semicircular shape, or a triangular or square shape. The easy communication part 12 may be formed in the inner side, and may be formed in the outer side. For example, in FIG. 1, a semicircular non-seal part is formed on the outside as the easy communication part 12. And since the width | variety of the 1st easily openable seal part 11 is narrow in the part in which the easy communication part 12 was formed, when the internal pressure of the outer bag 10 rose, the part in which the easy communication part 12 was formed Is opened first.

  The first easy-open seal part 11 may be easily opened when the internal pressure of the outer bag 10 is increased by the heat treatment, but the heat seal strength in a 90 ° C. atmosphere is 1200 g / 15 mm or less. Preferably, it is 800 g / 15 mm or less. The heat seal strength of the first easy-open seal part 11 in a 90 ° C. atmosphere may be 0 g / 15 mm, but is preferably 100 g / 15 mm or more. The heat seal strength is a value measured in an atmosphere of 90 ° C. in accordance with JIS Z0238 “Test method for sealed soft packaging bags”.

  The first easily openable seal portion 11 may be a complete seal at room temperature or an easy open. 150-2000g / 15mm is preferable and, as for the heat seal intensity | strength in the normal temperature atmosphere of the 1st easily openable seal part 11, 300-1500g / 15mm is more preferable. The heat seal strength in a normal temperature atmosphere is a value measured in a normal temperature (23 ° C., 65% RH) atmosphere in accordance with JIS Z0238 “Test method for sealed soft packaging bags”.

  As an embodiment in which the heat seal strength in a 90 ° C. atmosphere is 1200 g / 15 mm or less as a sealant of the first easy-open seal part 11, polyolefin, for example, a melting point of 120 ° C. or less (preferably 110 ° C. or less) is preferable. It can be realized by using polyethylene having a melting point of 140 ° C. or less and polypropylene having a melting point of 140 ° C. or less (preferably 130 ° C. or less) and using a sealant having a melting point higher by 10 ° C. or more as the sealant of other parts. In addition, melting | fusing point is the value measured based on ASTM2117.

  The outer bag 10 is preferably formed with a top seal portion 15 at a position that is the uppermost portion when the outer bag 10 is self-supporting. By doing so, the contents can be easily sealed and packaged after the contents are stored in the outer bag 10.

  At this time, the top seal portion 15 may also serve as the first easy-open seal portion 11, but the first easy-open seal portion 11 is formed separately from the top seal portion 15, That is, it is preferable to be positioned below the top seal portion. By doing so, the first easy-open seal part 11 can be formed before the contents are stored in the outer bag 10, and manufacturing management becomes easy.

  An inner bag 20 is fixed inside the outer bag 10. The position where the inner bag 20 is fixed may be the top seal portion 15 of the outer bag 10 as shown in FIGS. 1 and 4A, and when the outer bag is made self-supporting as shown in FIG. 4B. It may be fixed to the side portion 17. Fixing can be realized by heat sealing.

  The outer bag 10 preferably has an opening cut portion 16 at least at one side portion, and preferably has cut portions 16 at two side portions. Regarding the position where the cut portion 16 is formed, the outer bag 10 is opened from the cut portion 16 and the mixture of the contents 1 and 2 is taken out, and the mixture of the contents 1 and 2 is mixed. It is preferable to be located above the upper surface.

  Furthermore, when the outer bag 10 is opened from the notch 16 and the contents 2 has already dropped and there is an inner bag 10 that contains nothing, the mixture in which the contents 1 and 2 are mixed is taken out. Since it becomes difficult, when the outer bag 10 is opened from the cut portion 16, it is preferable that the inner bag 10 can be taken out together. For example, as shown in FIG. 4A, when the inner bag 20 is fixed to the top seal portion 15 of the outer bag 10, the cut portion 16 may be formed on the side portion of the outer bag 10. Good. Further, for example, as shown in FIG. 4B, when the inner bag 20 is fixed to the side portion 17 of the outer bag 10, the cut portion 16 is below the portion where the inner bag 10 is fixed. What is necessary is just to be formed.

[Inner bag]
The inner bag 20 is formed of, for example, a plastic film that can be used for the outer bag 10.

  However, since the inner bag 20 is fixed to the inside of the outer bag 10, the outermost layer of the inner bag 20 and the innermost layer of the outer bag 10 can be heat-sealed in the same manner in order to strengthen the fixing. It is preferable that it is made of a material. As the heat-sealable material, it is preferable to use the aforementioned polyethylene or polypropylene.

  The inner bag 20 is provided with a second easy-open seal part 21. The second easy-open seal part 21 has a function of releasing the pressure to the outside of the inner bag 20 (inside the outer bag 10) when the internal pressure of the outer bag 20 is increased by the heat treatment. Further, the second easy-open seal part 21 includes a communication path through which the content 2 stored in the inner bag 20 falls onto the content 1 stored in the outer bag 10 by its own weight when it is opened. Become.

  The second easy-open seal part 21 may be opened before the first easy-open seal part 11 or may be opened after the first easy-open seal part 11 or may be opened at the same time. Also good. However, when the content 2 stored in the inner bag 20 by the opening of the second easy-opening seal portion 21 falls onto the content 1 stored in the outer bag 10, the first easy-opening is already performed. If the sealable seal portion 11 is opened, the contents 2 may be scattered from the first easy-open sealable portion 11. Therefore, it is preferable that the second easy-open seal part 21 is positioned below the first easy-open seal part 11. By carrying out like this, even if the 1st easily openable seal part 11 has already been opened, the content 2 becomes difficult to scatter from the 1st easily openable seal part 11.

  The second easy-open seal part 21 may be easily opened when the internal pressure of the inner bag 20 is increased by the heat treatment, but the heat seal strength in a 90 ° C. atmosphere is 1200 g / 15 mm or less. Preferably, it is 800 g / 15 mm or less. The heat seal strength of the second easy-open seal part 21 in a 90 ° C. atmosphere may be 0 g / 15 mm, but is preferably 100 g / 15 mm or more.

  Note that the second easy-open seal part 21 may be a complete seal at room temperature or an easy open. 150-2000g / 15mm is preferable and, as for the heat seal intensity | strength in the normal temperature atmosphere of the 2nd easily openable seal part 21, 300-1500g / 15mm is more preferable.

  As an embodiment in which the heat seal strength in a 90 ° C. atmosphere is 1200 g / 15 mm or less as a sealant for the second easy-open seal part 21, polyolefin, for example, a melting point of 120 ° C. or less (preferably 110 ° C. or less) is preferable. It can be realized by using polyethylene having a melting point of 140 ° C. or less and polypropylene having a melting point of 140 ° C. or less (preferably 130 ° C. or less) and using a sealant having a melting point higher by 10 ° C. or more as the sealant of other parts. In addition, melting | fusing point is the value measured based on ASTM2117.

  As shown in FIG. 1, the second easy-open seal 21 is preferably formed at a position that is the lowermost part of the inner bag 20. By doing so, when the second easy-open seal 21 is opened, the entire amount of the content 2 stored in the inner bag 20 easily falls onto the content 1 stored in the outer bag 10. .

  Although the inner bag 20 may have a horizontal bottom part, as shown in FIG. 1, it is preferable to have the bottom part 25 which inclines below toward the 2nd easily openable seal part 21. As shown in FIG. The contents stored in the inner bag 20 when the second easy-open seal 21 is opened because the bottom portion of the inner bag 20 is inclined downward toward the second easy-open seal portion 21. 2 is less likely to remain inside the inner bag 20.

  There may be one inner bag 20 or two or more inner bags. Arrangement in the case of having two or more inner bags 20 can be set as appropriate, may be arranged in an overlapping manner, or may be arranged side by side as shown in FIG. Thus, the package for heat processing which concerns on this invention can mix 3 or more types of contents by arrange | positioning two or more inner bags 20.

<Packed food>
The packaged food according to the present invention is one in which foods to be heat-treated are stored in the inner bag and the outer bag of the above-described heat-treatment packaging body. Both the food stored in the inner bag and the food stored in the outer bag may be liquid during the heat treatment.

  Specific examples of ingredients stored in the inner bag / outer bag include pasta sauce / pasta, curry roux / rice, hamburger sauce / hamburger, gomoku sauce / yakisoba, Chinese rice bowl / rice, beef bowl ingredient / rice. It is done.

[Outer bag]
As a film for forming an outer bag, a laminated film obtained by dry lamination of a 25 μm thick nylon film (manufacturer: Toyobo Co., Ltd.) and a 100 μm thick polyethylene film (manufacturer: Tamapoly Co., Ltd.) was prepared. And the laminated film was arrange | positioned like FIG. 2 so that an outer side might be a nylon film and an inner side might become a polyethylene film, the bottom part and both sides were heat-sealed, and the self-supporting outer bag was produced. The size of the outer bag was 160 mm wide × 140 mm high, the seal width at the bottom was 41 mm, and the seal width at both sides was 10 mm.

  The first easy-open seal part was formed by inserting and heat-sealing PE-based easy open tape (manufacturer: Sanei Kaken Co., Ltd.) between the laminated films forming the bent parts. The position where the bent portion to be the first easily openable seal portion is formed is 31 mm from the top of the outer bag, and the center of the first easily openable seal portion is a semicircular non-circular shape with a radius of 6 mm. An easy communication part (vent hole) by a seal part was provided.

[Inner bag]
As a film forming the inner bag, a laminated film is prepared by extrusion sand lamination of a 30 μm thick polyethylene film (manufacturer: Mitsui Chemicals Tosero Co., Ltd.) and a 30 μm thick polypropylene film (manufacturer: Toray Film Processing Co., Ltd.). did. And the laminated film was arrange | positioned so that an outer side might be a polyethylene film and an inner side might become a polypropylene film, the bottom part and both sides were heat-sealed, and the inner bag (three-sided bag) was produced. The size of the inner bag was 100 mm wide × 60 mm high, and the bottom portion was inclined 45 ° downward toward the second easy-open seal portion formed near the center.

The second easy-open seal part was formed by inserting a PP easy open tape (manufacturer: Sanei Kaken Co., Ltd.) near the center of the bottom and heat-sealing.
[Packed food model sample]

  In this example, in order to examine the performance of the heat-treated packaging body using the inner bag and the outer bag obtained above, a packaged food model sample was prepared in which water was added to the inner bag and the outer bag, respectively.

  Specifically, first, 20 cc of water was put into the inner bag obtained above, and the upper part of the inner bag was heat sealed. On the other hand, 100 cc of water was put into the outer bag obtained above. Then, the upper part of the inner bag was put together with the uppermost part of the outer bag, and the uppermost part of the outer bag was heat-sealed, so that the inner bag was fixed inside the outer bag, and a packaged food model sample was obtained.

[Heat treatment experiment]
The packaged food model sample obtained above was placed in a household microwave oven, and a heat treatment experiment was performed at 600 W for 2 minutes 30 seconds. As a result, the inner bag began to swell 55 seconds after the start of heating, and after 60 seconds from the start of heating, the second easy-open seal part was steamed, and the water in the inner bag dropped onto the water in the outer bag. On the other hand, the outer bag started to swell after 2 minutes from the start of heating, and the air vent of the first easy-open seal part passed through after 2 minutes and 10 seconds from the start of heating. In addition, there was no vapor | steam leak from the uppermost part of the outer bag which has fixed the inner bag.

  As described above, by using the heat treatment packaging body according to the present invention, two or more contents can be mixed while being heat-treated in a separately stored state, and the obtained mixture is scattered outside. It has been found that it is possible to provide a package that is difficult to perform and a packaged food in which ingredients are stored.

DESCRIPTION OF SYMBOLS 1 Contents 2 Contents 10 Outer bag 11 First easily openable seal part 12 Easy communication part 15 Top seal part 16 Notch part 17 Side part 20 Inner bag 21 Second easy openable seal part 25 Inclined bottom part 31 Back surface Film 32 Front film 33 Top film 34 Bottom film 35 Notch 36 Bending part 37 Bending part 38 Heat-sealed region

Claims (20)

When the internal pressure rises due to heat treatment, a self-supporting outer bag formed with a first easy-open seal part that releases the pressure,
A package for heat treatment having an inner bag formed with a second easily-openable seal portion that is fixed inside the outer bag and releases the pressure when the internal pressure is increased by heat treatment,
When the contents are stored in the inner bag and the outer bag, respectively, the contents stored in the inner bag and the second easy-open seal part are stored in the outer bag. Located above the top of the contents,
By heating in that state, the second easy-open seal part is opened, the contents stored in the inner bag fall on the contents stored in the outer bag, and both contents are Become a mixed mixture,
The first easy-open seal part is a heat treatment package positioned above the upper surface of the mixture.   The package for heat treatment according to claim 1, wherein the second easy-open seal part is positioned below the first easy-open seal part.   The package for heat treatment according to claim 1 or 2, wherein the second easy-open seal part is formed at a position that is the lowest part of the inner bag.   The said inner bag is a package for heat processing of Claim 3 which has a bottom part which inclines below toward said 2nd easily openable seal part.   The said inner bag is a package for heat processing of any one of Claims 1-4 currently fixed to the side part when making the said outer bag self-supporting.   The outer bag has a notch for opening in at least one place on the side when the outer bag is self-supporting, and the notch is below a portion where the inner bag is fixed, and the The package for heat treatment according to claim 5, which is located above the upper surface of the mixture.   The said outer bag is a package for heat processing of any one of Claims 1-6 which has a top seal part in the position used as the uppermost part when making the said outer bag self-supporting.   The package for heat treatment according to claim 7, wherein the first easy-open seal part is positioned below the top seal part.   The package for heat treatment according to claim 7 or 8, wherein the inner bag is fixed to the top seal portion.   The said outer bag has an incision part for opening in at least one place of the side part when making the said outer bag self-supporting, The said incision part is located above the upper surface of the said mixture. Packaging for heat treatment.   The package for heat processing of any one of Claims 1-10 which has two or more of the said inner bags. The outer bag is formed of a plastic film,
The heat treatment according to any one of claims 1 to 11, wherein the first easy-open seal part is formed by joining the same surface side of the plastic film to each other and joining them in a palm shape by heat sealing. Packaging body. The plastic film is a gas barrier composite film provided with an inorganic oxide thin film,
The package for a heat treatment according to claim 12, wherein the first easy-open seal part is formed by bending a part of the outer bag upward or downward and heat-sealing a region away from the bent part.   The package for heat treatment according to any one of claims 1 to 13, wherein the outermost layer of the inner bag and the innermost layer of the outer bag are formed of the same heat-sealable material.   The package for heat treatment according to claim 14, wherein the heat-sealable material is polyethylene or polypropylene.   The package for heat processing of any one of Claims 1-15 used for the heat processing by a microwave oven.   The package for heat processing of any one of Claims 1-16 used for heat processing of a foodstuff.   The packaged food by which the foodstuff to heat-process was each accommodated in the inner bag and outer bag of the package for heat processing of Claim 17.   The packaged food according to claim 18, wherein the food stored in the inner bag is liquid during heat treatment.   The packaged food according to claim 18 or 19, wherein the food stored in the outer bag is liquid during heat treatment.

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