JPH0769384A - Package for oven range - Google Patents

Abstract

PURPOSE:To obtain good taste food without a need of excessive adjustment of water contained in the food, by a method wherein water is supplemented by heating the food in an oven range by an amount which is vaporaized out of the food during storage in the form of freezed food. CONSTITUTION:Contents 5 are placed in a container 4 which includes a water containing part 3 closed with a perforated film 2 having tiny holes 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microwave oven package which can be heated in a microwave oven.

[0002]

2. Description of the Related Art A so-called microwave package which can be heated on a microwave oven and then served on a table is generally a tray-shaped or cup-shaped container filled with food, and the container opening is directly made of a plastic film. It is covered with a heat seal or the like, or the entire container is packaged in a bag or the bag is directly filled with food.

These microwave packages are put in a microwave oven as a container by peeling off part or all of the lid or opening a part of the bag when heating the microwave oven, or food. Only put it in another container before putting it in the microwave.

[0004]

Generally, when a microwave oven is heated, the food is cooked as it is without any modification, so a means for preventing the food from drying during heating is required.
If you heat without doing this, the surface of the food will become hard,
Burning may occur as it progresses. In particular, in the case of frozen foods, the water sublimes from the foods during storage, and even if the foods in this state are heated in a microwave oven, the foods lack water and are generally hardened. Further, even if the water content of the food is excessively adjusted in advance, the taste is adversely affected and the surface of the food is not sufficiently dried.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems and is characterized in that the contents are stored in a container having a water storage unit closed by a perforated film having minute holes. It is a packaging body for a microwave oven.

Since the water storage unit is built in the container, it is not necessary to excessively adjust the water content of food, and when heating in a microwave oven, proper drying of the food is prevented by appropriately supplying steam through minute holes. Supply insufficient water.

Hereinafter, a more detailed description will be given with reference to the accompanying drawings. FIG. 1 is a cross-sectional front view showing an example of a microwave oven packaging body of the present invention, and FIG. 2 is a cross-sectional front view showing another example thereof.

According to the present invention, as shown in FIGS.
A package for a microwave oven, characterized in that the contents 5 are stored in a container 4 containing a water storage portion 3 closed by a perforated film 2 having

In the example of FIG. 1, since the perforated film 2 stores water in a state where the perforated film 2 is exposed, it is a minute hole that does not allow water to pass therethrough and allows steam to pass therethrough in a non-pressurized state. It is not particularly limited as long as it has a diameter of 1 and a diameter of 0.
It is preferable that there are many minute holes 1 having a size of 3 mm or less. In addition, a non-woven fabric or the like having a density that allows water to pass through without passing pressure and allows steam to pass therethrough can be used. The material of these perforated films 2 is
The thing which can be heat-sealed to a container is preferable.

In the example of FIG. 1, as the container 4 containing the water storage part 3, the container 4 itself has a two-step shape of an upper part 41 and a lower part 42, and the lower part 42 is used as the water storage part 3 with a perforated film. Covered with 2.

The amount of water stored in the water storage portion 3 is 5 to 5.
30 cc is preferable, and the capacity of the water storage unit 3 is 5
When it is filled with water of up to 30 cc, it is not fully filled, and it is preferable that the filling rate is about 20 to 90%.

The arrangement position of the water storage unit 3 may be one or plural as long as it is at the bottom of the container upper portion 41, but it is not particularly limited, but it is even if vapor is spread right under the contents 5. preferable.

In the example of FIG. 2, the heat-shrinkable film 21 is peelably laminated on the outer surface of the perforated film 2, and the microscopic holes 1 can be sealed at normal temperature, and the heat generated when heated in a microwave oven is maintained. The heat-shrinkable film 21 is laminated on the perforated film 2 with an adhesive force such that the heat-shrinkable film 21 is peeled off due to the stress of shrinking.

The perforated film 2 has a thickness of 5 to 20.
0 μm, preferably 15 to 100 μm can be used appropriately. As the minute holes 1, those having a diameter of 0.1 to 3 mm and a hole interval of about 0.5 to 30 mm can be suitably adopted.

The heat-shrinkable film 21 has a thickness of 5
-30 μm, preferably 20-100 μm, 1 in hot water
A uniaxially stretched product or a biaxially stretched product can be suitably used as long as it has a heat shrinkage rate of 10% or more when immersed for 0 seconds.
Further, it may be a single layer or a laminated product.

In order to releasably laminate the heat-shrinkable film 21 on the outer surface of the perforated film 2, for example, polyethylene terephthalate, polypropylene, polyethylene, nylon or polybutylene terephthalate is selected on the laminated side of the perforated film 2. Heat-shrinkable film 2
A resin layer selected from polyethylene, polypropylene, and an ethylene-vinyl acetate copolymer is formed on the layer 1 side.

Next, corona discharge treatment is applied to at least one of the two films on the side of lamination, and immediately thereafter, thermocompression bonding is performed to laminate. At this time, if the adhesive strength obtained by the above-mentioned lamination is in the range of 5 to 200 g / 15 mm width at 20 ° C., the minute holes 1 can be sealed at a normal temperature, and the heat shrinkable film is heated by the heat when heated in the microwave oven. It is preferable because the adhesive force to the extent that 21 peels off due to the stress of shrinking can be obtained.

In the example of FIG. 2, the water storage section 3 is a separate body from the container 4, and is separated from the contents 5 by the partition 43 and is contained in the container 4.

The amount of water stored in the water storage portion 3 is 5 to 30 c.
It is preferably about c, and it is preferable that the capacity is such that full filling does not occur when 5 to 30 cc of water is filled and the filling rate is about 20 to 90%. The position where the water storage unit 3 is installed is the contents 5
There is no particular limitation as long as it can be selected in the container 4 depending on the type and position of the.

[0020]

【Example】

Example 1 A thermoformed container 4 made of polypropylene as shown in FIG. 1 as a container 4, wherein an upper part 41 has a round shape with a diameter of 160 mm and a depth of 40 mm, and a lower part 42 has a diameter of 60 mm and a depth of 10 mm. A round container 4 was prepared.

The lower portion 42, that is, the water storage portion 3 is filled with 15 cc of water, and the minute holes 1 having a diameter of 0.1 mm are arranged at intervals of 1.
A perforated film 2 made of a stretched polypropylene formed in a large number of mm is heat-sealed to close the water storage part 3, and the upper part 4
Part of the bottom of 1.

Frozen sardines 1 as contents 5
Arrange 0 pieces on the container upper part 41, and around the container upper part 41,
A perforated polypropylene film having small holes with a diameter of 0.6 mm formed in a grid pattern with a gap of 10 mm was heat-sealed to obtain a lid member 6 to obtain a microwave oven package.

Then, the obtained microwave package was placed in a microwave oven with a high-frequency output of 500 W and heated for 3 minutes, and steam was generated from the hole 1. After that, it was taken out and tasted. As a result, the inside and outside of the sweet potato had a good texture.

Example 2 As the container 4, a polypropylene thermoformed container 4 as shown in FIG. 2 having a length of 160 mm, a width of 140 mm and a height of 30 mm was prepared.

A thermoforming container 31 made of polypropylene as the water storage unit 3 has a diameter of 60 mm and a depth of 1
A 0 mm round container is filled with 15 cc of water, and a heat-shrinkable film 21 made of polyvinyl chloride is added to a perforated film 2 made of stretched polypropylene in which a large number of fine holes 1 having a diameter of 0.6 mm are formed at intervals of 10 mm. Water storage part 3 by heat-sealing what was laminated with adhesive strength of 80 g / 15 mm width
Closed.

Then, about 3/4 of a container 4 is filled with frozen pilaf as the content 5, the water storage section 3 is put in the space defined by the partition 43, and the polypropylene film is heat-sealed to form the lid member 6. A microwave package was obtained.

Then, the obtained package for a microwave oven is
After partly peeling the lid member 6 along the dotted line 6, the lid member 6 was placed in a microwave oven with a high-frequency output of 500 W and heated for 5 minutes.
The heat-shrinkable film 21 of the water storage portion 3 was peeled off as indicated by the dotted line 21 and steam was generated from the hole 1. After that, the product was taken out and tasted. As a result, a good texture was obtained both inside and outside the pilaf.

[0028]

As described above, the present invention is a microwave oven packaging body characterized in that the contents are stored in a container having a water storage portion closed by a perforated film having minute holes. There is no need to adjust the water content of the substance excessively,
By heating in a microwave oven, there is an effect that water sublimated from the food during storage of the frozen food can be supplemented and a food having a good texture can be obtained.

[Brief description of drawings]

FIG. 1 is a front view of a cross section showing an example of a microwave package of the present invention.

FIG. 2 is a front view of a cross section showing another example of the microwave package of the present invention.

[Explanation of symbols]

 1 Micropore 2 Perforated film 3 Water storage 4 Container 5 Contents

Claims (1)

[Claims] 1. A package for a microwave oven, characterized in that the contents are contained in a container containing a water container closed by a perforated film having minute holes.