JPH1053281A - Molded food package and production thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove a trace amount of residual oxygen in a package, by constituting at least a part of a packaging container having a gas barrier property charged with food molded as the shape of container, with an oxygen-absorbing resin in which a deoxidizer is blended, to absorb oxygen in the container. SOLUTION: A gas barrier packaging container is made or a gas barrier material and provided with a heat-sealing material at the innermost layer. And at least a part of the container is constituted of a deoxidation multi-layer material provided with a resin layer in which an oxygen-absorbent is blended with a thermoplastic resin. It is preferable that an oxygen-absorbing resin layer is formed as an intermediate layer and an external layer constituted of a gas barrier material at the outside and an internal layer constituted of a heat-sealing resin at the inside are laminated, as the deoxidation multi-layer material. A thermoplastic resin having oxygen-permeability is selected as the oxygen- absorbing resin layer mixed with an oxygen absorbent and the resin used for the inner layer respectively. The oxygen-absorbent layer of the intermediate layer and the inner layer are laminated and joined without an adhesive layer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a molded food package and a method for producing the same. Specifically, at least a portion of the container is filled with food in a liquid or semi-liquid flow state in a gas-barrier packaging container made of a deoxidizing multilayer material having an oxygen-absorbing resin layer, and after the container is sealed, the food is solidified. And a method for producing the same.

[0002]

2. Description of the Related Art In the case of processed foods, the present invention relates to foods which are filled into bags, cups, boxes or other containers in a liquid or semi-liquid flowing state and then solidified to be shaped into the shape of the container. There are many types of foods to be used as molded food packages. Specifically, foods such as jelly, pudding, bavarois, yokan, kuzumanju, kuzumochi, tofu, sesame tofu, chawanmushi, butter, processed cheese, fishery paste products, rice cake and the like correspond to this. With the development of production technology, food preservation technology, and packaging technology by food manufacturers, even if the food made into a molded food package has high moisture, low sugar or low salt, the molded food package has extremely low microbial contamination and improved storage stability. The number of excellent products has increased, and it has become easier to purchase and taste at home. Prevention of bacterial contamination of molded foods depends largely on advances in aseptic packaging technology, heat sterilization technology, and hermetic packaging technology, as well as hygiene management during manufacturing. It can be seen that the quality problem due to is almost overcome. In addition, the deterioration of quality due to the influence of oxygen has been improved by the development of excellent barrier materials, improved packing methods to minimize the space volume, and advances in packaging technologies such as vacuum packaging and inert gas replacement. .

[0003] However, even if the packaging technology has advanced, it is often impossible to completely remove the air remaining in the minute gaps in the container or the dissolved oxygen contained in the food based on the container shape and the packaging process. The body undergoes a subtle quality decline, probably due to minute amounts of residual oxygen. For example, it is thought that packaging is performed using a gas barrier material that does not substantially transmit oxygen, such as aluminum foil, and that a filling method that substantially eliminates the space in the container is used, and there is no further attempt to remove oxygen. Even if the above method is adopted, the food in the molded food package may have a slight change in flavor from the beginning, a different texture, or a slight change in color tone. For this reason, conventionally, such a subtle change in quality, such as flavor and color tone, has been considered inevitable and overlooked in molded food packages.

[0004]

As described above, conventionally,
The reduction of food quality, which was considered inevitable in molded food packaging, is a problem that must be solved in order to improve the commercial value of molded food packaging and extend the storage period. The present invention provides a molded food package which is free from deterioration in flavor and color tone due to a trace amount of residual oxygen and has excellent long-term storage properties.

[0005]

Means for Solving the Problems In view of the above-mentioned problems, the present inventors applied an oxygen-absorbing resin containing an oxygen absorber to a conventional molded food package in which an oxygen absorber cannot be used, and provided the same in the package. As a result of various studies to remove trace residual oxygen, at least a part of the gas barrier packaging container containing the molded food is made of an oxygen-absorbing resin containing a deoxidizer to absorb oxygen in the food-filled container. By doing so, the inventors have found that the above-mentioned problems can be solved, and have completed the present invention.

That is, according to the present invention, as a means for solving the problems, at least a part of a container is made of a deoxidizing multilayer material having a resin layer in which an oxygen absorbent is mixed with a thermoplastic resin, and absorbs oxygen in the container. The present invention provides a molded food package characterized in that the food is solidified after the food is filled in a liquid or semi-liquid flow state in the gas barrier packaging container to be sealed and the container is sealed. The molded food in the molded food package is a liquid that is in a liquid or semi-liquid state when filled into a container and solidified according to the shape of the container after filling.

Further, the present invention is characterized in that, in the molded food package, the liquid or semi-liquid food is filled so that there is substantially no space in the container.

Further, the present invention is characterized in that in the above molded food package, a temperature range higher than a storage temperature after solidification elapses from filling the food into a container, sealing and solidifying the food.

Further, the present invention provides the molded food package, wherein the deoxidizing multilayer material comprises a gas barrier outer layer, an intermediate layer comprising a resin layer in which an oxygen absorbent is blended with a thermoplastic resin, and a heat sealing resin layer. Characterized by having an inner layer of:

Further, the present invention is characterized in that the molded food package preferably has a gas barrier outer layer having a metal material layer as a gas barrier material.

Further, the present invention is characterized in that in the molded food package, preferably, the oxygen absorbent is iron powder coated with a metal halide.

Further, the present invention is characterized in that in the above-mentioned molded food package, food is filled into a gas barrier packaging container made of a deoxidizing multilayer material, and the container is sealed by heat sealing. In the above-mentioned package, the gas barrier packaging container is made of a deoxidizing multilayer material, and it is sufficient if the container itself can be heat-sealed to seal the container. For example, a bag-like container can be selected.

Further, the present invention is characterized in that, in the above-mentioned package, the gas-barrier container is filled with food, and the gas-barrier lid material is heat-sealed and hermetically sealed. In the above-mentioned package, the gas barrier container may be formed of a deoxidizing multilayer material, or the gas barrier lid may be formed of a deoxidizing multilayer material, and both the gas barrier container and the lid material may be formed of the deoxidizing multilayer material. It may be made of a material.

Further, the present invention provides a gas barrier package comprising at least a portion of a container made of a deoxidizing multilayer material having a resin layer in which an oxygen absorbent is blended with a thermoplastic resin so as to absorb oxygen in the container. A method for producing the molded food package, characterized in that the container is filled with food in a liquid or semi-liquid state, the container is sealed, and then the food is solidified.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION A gas barrier packaging container according to the present invention (hereinafter referred to as a barrier container or simply a container)
A deoxidizing multilayer comprising a gas-barrier material (referred to as a barrier material), a heat-sealable material on the innermost surface, and at least a part of a container having a resin layer in which an oxygen absorbent is mixed with a thermoplastic resin. This is a container made of a material and configured to absorb oxygen in the container. The shape of the barrier container is not particularly limited, and various known heat-sealing sealed containers can be used.

The form of the barrier container of the present invention is, for example,
A container composed entirely of a deoxidizing multilayer material or a container composed of a deoxygenating multilayer material combined with another barrier member, or a container composed of a barrier material of a deoxygenating multilayer material There is a form in which members are used together. Specifically, the following forms are exemplified.

1) Bags of various forms made of a film-shaped oxygen-absorbing multilayer material by heat sealing. Another barrier material or a transparent barrier material can be used for a part of the bag.

2) A molded container made of a deoxidizing multilayer material,
A container whose opening is sealed by heat sealing the members of the container itself. For example, an ampule type container.

3) A container in which a lid made of a deoxygenated multilayer material or a barrier material is heat-sealed and sealed in a molded container made of a deoxygenated multilayer material.

4) A container in which a lid made of a deoxidized multilayer material is heat-sealed and sealed in a resin molded container made of a barrier material. 3) As the molded container of 4), for example, trays, cups and the like can be mentioned.

5) A container in which a lid made of a deoxidizing multilayer material is heat-sealed and sealed in a metal container whose inner surface is subjected to a heat-sealable resin process.

In order to make the gas barrier property more complete, it is more preferable that the entire container including a member such as a lid has a gas barrier layer of a metal material. A transparent barrier material can be used for a part of the container so that the inside of the container can be seen through.

The molded food package of the present invention is formed by filling the above-mentioned barrier container with the food in a liquid or semi-liquid flow state, and then solidifying the food according to the shape of the container. For example, foods such as jelly, pudding, bavaroa, yokan, kuzubun, kuzumochi, tofu, sesame tofu, chawanmushi, butter, processed cheese, fishery products, rice cake, and the like are regarded as molded foods. Heating is mainly used for molding these foods. For example, in jelly, kneaded yokan, tofu, rice cake, etc., heat and fill in a liquid or semi-liquid flowing state,
It solidifies due to a decrease in temperature after filling. Also, steamed yokan,
Waste products, puddings, fish paste products, etc. are filled by utilizing the liquid or semi-liquid state of fluidity at the raw material stage, and after filling, they are heated and solidified to produce products.
In many cases, the present invention utilizes heating for heat sterilization during filling and packaging. Further, in the present invention, when the food package is hermetically sealed, vacuum packaging and inert gas replacement can be used together.

Next, the deoxidizing multilayer material used in the present invention will be described in detail. The deoxidizing multilayer material is provided with an oxygen absorbing resin layer in which an oxygen absorbent is blended with a thermoplastic resin, and preferably, this oxygen absorbing resin layer is used as an intermediate layer,
An outer layer made of a gas barrier material is laminated on the outer side, and an inner layer (sealant layer) composed of a heat sealable resin layer is laminated on the inner side.

As the oxygen absorbent to be mixed with the thermoplastic resin, a known oxygen absorbent containing metal powder, ferrous salt, ascorbic acid, polyphenol and the like as a main component can be used. Above all, an oxygen absorber containing iron powder as a main component is preferable in terms of oxygen absorption ability, and a material obtained by coating iron powder with a metal halide is particularly preferable. As the metal halide, chlorides, bromides and iodides of alkali metals or alkaline earth metals are used. The suitable amount of the metal halide coating on the iron powder is 0.1 to 10 parts by weight per 100 parts by weight of the iron powder. The mixing ratio of the oxygen absorbent of the iron powder base to the thermoplastic resin is 10 to 100 per 100 parts by weight of the thermoplastic resin.
Parts by weight are appropriate. The oxygen absorbing resin layer may contain an alkaline earth metal oxide, an odor reducing agent such as an adsorbent, a coloring agent, various fillers, and the like, in addition to the oxygen absorbing agent.
In particular, the addition of an alkaline earth metal oxide is preferable from the viewpoint of preventing the oxygen absorbing resin layer from being deactivated in the atmosphere and improving the resin processability.

As the resin used for the oxygen-absorbing resin layer containing the oxygen absorbent and the resin used for the inner layer, a thermoplastic resin having oxygen permeability is selected. For example, low-density, medium-density, high-density polyethylene, ethylene-propylene copolymer, various polypropylenes, ethylene-vinyl acetate copolymer, polystyrene, polyolefins such as various styrene copolymers and modified products thereof Used alone or as a mixture. It is preferable that the oxygen-absorbing resin layer and the inner layer of the intermediate layer can be laminated and bonded without interposing an adhesive layer,
Resins compatible with each other are selected. Further, it is selected in consideration of heat resistance as appropriate according to the temperature at the time of use. Furthermore, the inner layer is an isolation layer from food of the oxygen absorbing resin layer,
It is also a sealant layer for heat sealing. For this reason, the inner layer may have a multilayer structure for adjusting the sealing strength.

As the barrier material constituting the outer layer, a known gas barrier material such as a gas barrier resin, a metal foil such as an aluminum foil, and a vapor-deposited film of a metal or a metal oxide is used in a single layer or a multilayer. For forming a multilayer, a method such as co-extrusion, lamination, or coating is employed, and an adhesive layer is provided as necessary. As the thermoplastic resin forming the gas barrier resin layer, an ethylene-vinyl alcohol copolymer or nylon MXD6 is preferable. For use in a high-temperature and high-humidity atmosphere, nylon MXD6 (such as “MX nylon” manufactured by Mitsubishi Gas Chemical Co., Ltd.) Those mainly comprising a polymer of diamine and adipic acid) are preferred. The use of a metal foil is particularly preferable because the metal foil has complete gas barrier properties. In addition, an adhesive layer or a smoothing layer can be provided between the outer layer and the intermediate layer. As the outer layer, layers of various materials can be provided as necessary in addition to the inside and outside of the barrier material layer.

The deoxidizing multilayer material of the present invention is produced by appropriately combining coextrusion, various laminating methods, various coating methods, and various forming methods according to the properties of each layer member, processing purpose, processing shape and the like. Processed. For example, multilayer coextrusion molding is desirable for a multilayer material to be used after being subjected to blow molding or drawing of a sheet-like material, and when a film-like material is used as a lid material or processed into a bag-like container, an oxygen-absorbing layer is used. From the viewpoint of workability and the necessity of providing a material having heat resistance in the outermost layer, it is desirable to produce the film by lamination or coating such as extrusion lamination.

[0029]

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to the examples. Example 1 An iron powder having an average particle size of 30 μm was placed in a vacuum mixing dryer equipped with a heating jacket, and a calcium chloride aqueous solution was sprayed on the iron powder while heating under reduced pressure to obtain 2 parts by weight of calcium per 100 parts by weight of the iron powder. Calcium chloride is uniformly adhered to the surface in a uniform ratio to obtain a dried iron powder, which is then sieved (opening 74 μm).
Using m), a granular oxygen absorber was obtained by removing coarse particles from the iron powder. Next, using a twin screw extruder, 50 parts by weight of the granular oxygen absorbent and 2 parts by weight of calcium oxide were kneaded with 50 parts by weight of random polypropylene to prepare a pellet A.
Similarly, a polypropylene pellet B containing 60% by weight of a titanium oxide pigment was prepared.

Next, using an extrusion laminator, a resin layer composed of pellet A: pellet B = 8: 2 (weight ratio) was extruded and laminated at a thickness of 60 μm between two polypropylene films (thickness: 25 μm). On one side of this laminated film, nylon was further laminated with aluminum foil (20 μm) by lamination to obtain an oxygen-absorbing multilayer film. This oxygen-absorbing multilayer film is made of nylon (10 μm).
m) / aluminum foil (20 μm) / polypropylene (25 μm)
m) / oxygen absorbing resin layer (60 μm) / polypropylene (25 μm).

The obtained oxygen-absorbing multilayer film was heat-sealed to produce a gusset bag (length 18 cm × width 4 cm × fold 1 cm) having an aluminum foil on the outer surface. Approximately 120 cc of kuriyokan (containing agar as a component) in a fluidized state was poured into the bag, and the bag mouth was heat-sealed and sealed, and then allowed to cool. A package of chestnut yokan (about 15 cm x 4 cm x 2 cm in thickness) was obtained, in which the yokan cooled and solidified.

Comparative Example 1 In the oxygen-absorbing multilayer film of Example 1, nylon (10 μm) / aluminum foil ( 20 μm) / polypropylene (25 μm) / polypropylene-polyethylene mixed layer (60 μm) / polypropylene (25 μm). Using the obtained multilayer film, a gusset bag was prepared in the same manner as in Example 1, and the gusset bag was filled and sealed with a flowable kuriyokan to obtain a yokan package in which the yokan cooled and solidified.

A plurality of the kuriyokan packages of Example 1 and Comparative Example 1 were stored at a temperature of 25 ° C., and after one month, the container was opened and the kuriyokan was taken out, and the appearance such as color tone was mainly observed. The quality of the food was evaluated by examining the change in taste and taste, such as flavor. In the meantime, during the second day of storage, a part of the container was appropriately opened and the chestnut yokan was taken out, and the quality change was compared and examined. As a result, the chestnut yokan of Example 1 had the same taste of chestnut flavor and refreshing sweetness felt on the first two days after storage for one month, and the appearance of the color tone also changed. I was not able to admit. The kuriyokan of Comparative Example 1 had a slight difference in flavor from the first second day as compared with Example 1, and this difference in flavor was further expanded after one month. In particular, a noticeable change in appearance was observed after one month,
Some blackening was seen on the surface of the yokan, and the whole was dark.

Example 2 Iron powder coated with 1% by weight of sodium chloride (average particle size 30
μ) oxygen absorbent in low-pressure high-density polyethylene (oxygen-absorbent resin layer containing 60% by weight of oxygen absorbent), sealant layer made of ethylene-vinyl acetate copolymer-containing polyethylene containing 10% by weight of titanium oxide ( An oxygen-absorbing multilayer film having a gas barrier layer made of aluminum foil printed on one side and overprinted with varnish was prepared. This oxygen-absorbing multilayer film is composed of a gas barrier layer (30 μm) / LLDPE (30
μm) / oxygen absorbing resin layer (50 μm) / sealant layer (30 μm)

An aluminum cup (75 cc in volume) having a heat-sealing resin layer on the inner surface is filled with about 75 cc of orange jelly containing orange pulp in a fluidized state at 70 ° C. The lid made of the multilayer film was sealed by heat sealing. The cup filled with orange jelly and sealed was cooled in a cold water bath to obtain a solidified jelly package of jelly.

Comparative Example 2 A barrier layer (30 μm) / L having the same gas barrier layer and sealant layer as in Example 2 but without the oxygen absorbing resin layer
An orange jelly package in which an orange jelly was solidified by filling in a cup and sealing in the same manner as in Example 2 except that a lid material composed of a multilayer film having a structure of an LDPE layer (30 μm) / sealant layer (30 μm) was used. Obtained.

A plurality of the orange jelly packages of Example 2 and Comparative Example 2 were stored at a temperature of 5 ° C. for one month, and during this period, a part of them was opened on the second day of storage and then appropriately opened. Then, orange jelly was taken out, and quality changes such as color tone and flavor were compared and examined, and orange jelly quality evaluation was performed. As a result, in the orange jelly of Example 1, the color tone, aroma, and elasticity of the jelly, which were confirmed on the first second day, did not change even after storage for one month. Compared to Example 1, Comparative Example 1 had a slight difference in quality from the beginning, and the elasticity of the jelly became clearly inferior on the tenth day, and the color tone, flavor, etc. were apparent after one month. The quality gap was also widening.

EXAMPLE 3 About 75 cc of walnut tofu obtained by heating and kneading a mixture of ground walnut and starch in a fluidized state, as in Example 2,
An aluminum cup (capacity: 75 cc) was filled, the lid made of the oxygen-absorbing multilayer film was heat-sealed and sealed, and then cooled in a cold water bath to obtain a solidified walnut tofu package of walnut tofu.

Comparative Example 3 In the same manner as in Example 3, the orange jelly package of Comparative Example 2 was replaced with walnut tofu to obtain a walnut tofu package.

A plurality of the walnut tofu packages of Example 3 and Comparative Example 3 were stored at a temperature of 5 ° C. for one month, and during this period, a part of the package was opened on the second day of storage and then appropriately opened. Then, the walnut tofu was taken out, and the quality change such as color tone and flavor was compared and examined, and the quality of the walnut tofu was evaluated. As a result, in the walnut tofu of Example 3, the quality of the walnut with excellent flavor and color tone, which was confirmed on the first second day, did not change even after storage for one month. Compared to Example 3, Comparative Example 3 had a slight difference in walnut flavor from the beginning,
After a month, the flavor was clearly inferior and a little bitter. The appearance was also changed, and browning was observed in some places on the surface of the tofu.

Example 4 Pellets A of Example 1, MX nylon (manufactured by Mitsubishi Gas Chemical), polypropylene and modified polypropylene were coextruded using a four-type, six-layer multi-layer sheet co-extrusion apparatus to obtain polypropylene (200 μm) / modified Polypropylene (15μ
m) / MX nylon (20 μm) / modified polypropylene (15 μm) / oxygen-absorbing resin layer (80 μm) / polypropylene (70 μm) to obtain an oxygen-absorbing multilayer sheet. This multilayer sheet was vacuum-formed to obtain a blister-formed container (volume: 10 cc). The obtained blister molding container is filled with about 10 cc of the heated and melted peanut candy, and an aluminum foil having a polypropylene layer on the inner surface is heat-sealed and sealed, and then cooled to obtain a solidified peanut candy package of the peanut candy. Was.

Comparative Example 4 In place of the oxygen-absorbing multilayer sheet of Example 4, polypropylene (200 μm) / modified polypropylene (15 μm)
/ MX nylon (20 μm) / modified polypropylene (1
A peanut candy package was obtained in the same manner as in Example 4 using a blister molded container (volume: 10 cc) obtained by vacuum molding a multilayer sheet having a structure of 5 μm) / polypropylene (150 μm).

A plurality of the peanut candy packages of Example 4 and Comparative Example 4 were stored for one month at a temperature of 35 ° C., and during this period, a part of the package was opened appropriately on the second day of storage. Then, the peanut candy was taken out, and quality changes such as color tone and flavor were compared and examined, and the quality of the peanut candy was evaluated. As a result, in the peanut candy of Example 4, the excellent taste of the peanut, which was confirmed on the first second day, was well maintained for one month. The peanut candy of Comparative Example 1 was obtained in Example 1.
From the beginning, there is a slight difference in the flavor of peanuts.
After a month, an odor of oxidation began to be felt, and the flavor was poor overall.

Example 5 Using the oxygen-absorbing multilayer film prepared in Example 1, a three-side seal bag (10 cm × 10 cm) having one end opened was produced. The bag was filled with 80 cc of fish surimi containing crab meat, the bag mouth was heat-sealed and sealed, and then heated at 105 ° C. for 80 minutes to obtain a solid kamaboko package of fish surimi containing crab meat.

Comparative Example 5 A three-sided sealed bag (10 cm × 10 cm) was prepared using the multilayer film without an oxygen-absorbing resin layer prepared in Comparative Example 1, and this bag was used. I got a body.

The kamaboko packages of Example 5 and Comparative Example 5 were
Each of them was stored for one month at a temperature of 5 ° C. During this period, a part of the storage was opened on the second day after that, and the container was opened, and the kamaboko was taken out.
Quality evaluation such as flavor was performed. As a result, in the kamaboko of Example 5, the quality of the kamaboko including the color tone and flavor, particularly the remarkable crab color tone and flavor, confirmed on the first two days were maintained well for one month. Comparative Example 1 had a slight difference in quality from the beginning as compared with Example 1, and after one month, the color tone of the crab meat was clearly faded, and nets were generated in the kamaboko and the flavor was extremely reduced. Was.

[0047]

As is clear from the examples, the excellent quality maintaining effect of the present invention has no quality reduction from the initial stage,
It is much better than expected. Conventionally, in a molded food package, if the food is filled so as to leave as little space in the container as possible, the space is small because the liquid or semi-liquid is filled in close contact with the container wall, and the amount of residual oxygen in the container is small. It is low and solidifies at a relatively early stage even when heated.For example, oxygen that is entrained in food, if it is completely solidified, will be trapped in food and the effect of oxygen will affect the whole food For this reason, it has been considered that if complete barrier packaging is carried out, immediately after packaging, there is no overall quality change over the interior of the food, regardless of any surface color change.

However, as can be seen from the comparative examples, surprisingly, from the initial stage, not only the surface color change, but also the decrease in flavor, which is considered to be an overall change throughout the food, occurred. Assuming that the overall quality deterioration that occurs during the production of such a molded food package is caused by traces of residual oxygen and heating, the comparative example predicts that the speed of the quality deterioration is very fast. If so, even if a small amount of oxygen is absorbed using the oxygen absorbing resin layer, the effect is naturally limited and the effect is limited to a superficial effect.

However, surprisingly, as is apparent from the examples, unexpectedly, not only the surface color change from the initial stage but also the overall deterioration in the quality of the food inside is suppressed unexpectedly from the initial stage. And a molded food package in which the taste is not impaired. This suggests that the heating contributes to the acceleration of the oxygen absorption rate by the oxygen absorbing resin layer more than expected beyond the rate of quality deterioration. In particular, in the present invention, since the liquid or semi-liquid is heated in a sealed state, the residual oxygen in the voids in the container is of course absorbed, and trace amounts of oxygen and dissolved oxygen entrained in the food are quickly absorbed and removed. Thus, an excellent quality maintaining effect was exerted, which is considered to have brought about a longer-term quality maintaining effect.

As described above, according to the present invention, it is possible to suppress the delicate deterioration in the production stage which is considered to be inevitable in the conventional molded food package, and to maintain the original flavor, color tone and other qualities. It is possible to manufacture molded food packages as they are. In addition, it is possible to prevent deterioration in quality, such as a change in color tone, a change in flavor, or a change in components, while keeping a molded food package excellent in quality, thereby enabling storage for a longer period of time. The present invention can provide not only products with higher commercial value but also highly safe foods with excellent storability that do not require the addition of various preservatives. It contributes to the improvement of life.

Claims (9)

[Claims] At least a part of a container is formed of a deoxidizing multilayer material having a resin layer in which an oxygen absorbent is blended with a thermoplastic resin, and is provided in a gas barrier packaging container configured to absorb oxygen in the container. A molded food package wherein the food is solidified after filling in a liquid or semi-liquid flow state and sealing the container. 2. The molded food package according to claim 1, wherein the liquid or semi-liquid food is filled so as to have substantially no space in the container. 3. The food package according to claim 1, wherein a temperature range higher than a storage temperature after the solidification elapses from filling the food into a container and sealing it to solidifying the food. 4. The deoxidizing multilayer material has an outer layer having gas barrier properties, an intermediate layer composed of a resin layer obtained by mixing an oxygen absorbent with a thermoplastic resin, and an inner layer composed of a heat-sealing resin layer. The molded food package according to any one of claims 1 to 3. 5. The gas-barrier outer layer has a metal material layer as a gas-barrier material.
A molded food package according to claim 1. 6. The method according to claim 1, wherein the oxygen absorbent is iron powder coated with a metal halide.
The molded food package according to any one of the above. 7. The gas barrier packaging container made of a deoxidizing multilayer material is filled with food and heat-sealed to seal the container. Molded food packaging. 8. The molded food packaging according to claim 1, wherein the gas barrier container is filled with food, and the gas barrier lid material is heat-sealed and sealed. body. 9. A gas barrier packaging container, wherein at least a part of the container is made of a deoxidizing multilayer material provided with a resin layer in which an oxygen absorbent is blended with a thermoplastic resin so as to absorb oxygen in the container. 9. The method for producing a molded food package according to any one of claims 1 to 8, wherein the food is solidified after filling in a liquid or semi-liquid flow state and sealing the container.