JPH0984570A - Cooking and preservation of food - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method capable of preserving food in a good state by bringing the food to be capable of being heated by an electronic oven and capable of blocking air permeatiion between inside and outside of a bag in a frozen preservation state. SOLUTION: This cooking and preservation of food is to put the food into a degassing bag capable of permeate a gas between inside and outside of the bag body 1 through a water insoluble, water absorbing and heat and cold resistant nonwoven fabric 12 laid in a heat sealed part 10 and seal the bag, heat and precook the food by heating by an electronic oven or with steam, etc., while removing the gas from the nonwoven fabric 12, dip the sealed bag into a water tank and spontaneously release the residual gas in the bag to bring the inside of the bag in vacuum and pull up the bag from the water tank and rapidly cool the bag. Thus, water included in the nonwoven fabric is frozen and an ice layer is formed and the food can be preserved by insulating air permeation from outside of the bag.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cooking and preserving bagged food.

[0002]

2. Description of the Related Art Conventionally, a pre-cooked food obtained by heating a microwave oven or steam has been stored in a heat-resistant and cold-resistant bag and then frozen and stored for over-the-counter sales. However, bagging of pre-cooked foods is troublesome in terms of hygiene, high temperature, shape loss, etc., and frozen foods are frozen and burned due to aeration contact from ventilation holes, resulting in poor appearance. There was a problem.

[0003]

Therefore, the present invention secures cooking with a microwave oven or steam by means of a ventilation material, and in the frozen storage state, the ventilation inside and outside the bag can be blocked to preserve the food in a good state. The present invention provides a method for cooking and preserving, which can be used in the same bag from pre-cooking at the manufacturing stage to frozen storage and main cooking at home and the like.

[0004]

Therefore, according to the present invention, there is provided a degassing bag in which the inside and outside of the bag body is ventilated through a water-absorbent, heat- and cold-resistant, water-absorbent ventilating material disposed in a part of the bag body. , After containing and sealing the food, while pre-cooking with a microwave oven or steam while venting the expansion gas from the vent,
Then, in the bag state, if the breathable material is in a water-containing state, it is rapidly cooled as it is, and if the breathable material is in a non-water-containing state, it is made to contain water and rapidly cooled, and the gas remaining in the bag is removed by the quenching. A method for cooking and preserving foods, characterized by freezing the moisture content of the aeration material and blocking the aeration inside and outside the bag by the ice layer to preserve the food. After heating and precooking, the bag is impregnated into the water tank as it is to release the gas remaining in the bag to make it a vacuum state, and the ventilation material is made to contain water, and then the bag is pulled out of the water tank and rapidly cooled. It may be frozen. Further, in the heat-sealed portion of the bag body by heat sealing via the air-permeable material, a non-heat-sealed non-adhesive portion is provided to interpose the water-absorbent air-permeable material in the bag from the outer end face to form a bag body. Good.

When pre-cooking and main-cooking with a microwave oven or steam, expansion and damage of the bag are prevented by degassing the ventilation material, and the bag is heated and pre-cooked in a rapidly cooled state or impregnated in a water tank. At times, the gas remaining in the bag is spontaneously released into a vacuum-packed state, and during freezing storage, the moisture content of the aeration material is frozen to form an ice layer that blocks ventilation inside and outside the bag. It can be used for pre-cooking, frozen storage and main cooking.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an example of the illustrated embodiment of the present invention will be described. In the present example shown in FIG. 1, reference numeral 1 denotes a bag body which is also used for cooking and for frozen storage, and has an edge portion heat-sealed. The film 11 forming the bag 1 is a heat-resistant and cold-resistant plastic film, and the heat-sealing portion 10 has a plastic water-absorbent non-woven fabric 12 that can be heat-sealed between the films 11 from the outer end surface inside the bag. I'm wearing heat. Actually, in the heat-sealed portion 13 by heat sealing,
The non-woven fabric 12 is fused with the film 11 and is not left.

The heat-sealed portion 10 is provided with a non-bonded portion which is not heat-sealed to interpose the nonwoven fabric 1 therein.
2 remains and is in a state of being communicated from the outer end surface into the bag. Therefore, as shown in FIGS. 2 and 3, the ventilation water inside and outside the bag body 1 is secured from the remaining nonwoven fabric 12.

Using this bag 1, raw corn 2
Are housed and sealed. Then, while being housed in the bag body 1, it is boiled by a pressure cooker or the like, or heated by a microwave oven, steam or the like for precooking. At this time, as shown in FIG. 4, the expanded gas escapes from the non-woven fabric 12 serving as the ventilation part, and the expansion damage of the bag is prevented.

Then, the bag is soaked in water and rapidly cooled. As a result, the gas remaining from the expanding bag body 1 naturally escapes and becomes a state close to a vacuum, as shown in FIG.
The inner corn 2 is brought into close contact, or the film 11 is brought into close contact with each other to shrink.

Further, by freezing in this state, the moisture impregnated in the non-woven fabric 12 is frozen and becomes an ice state, and the ice layer blocks the ventilation inside and outside the bag 1. If it is frozen and stored as it is, it can be well preserved.
At the time of meal, the bag 1 may be reheated in a microwave oven or boiled. At this time, the water-containing ice of the non-woven fabric 12 is thawed and air permeability is secured, so that gas can be released and the bag is not damaged.

Thus, according to this embodiment, the nonwoven fabric 12
Since it can be degassed by aeration, it can be heated in a microwave oven or steam, etc. When frozen, the moisture contained in the non-woven fabric 12 freezes to form an ice layer, which blocks the ventilation inside and outside the bag during storage and prevents freezing and burning. Is done. Further, since the nonwoven fabric 12 is provided in the heat seal portion, the film of the bag can be arbitrarily selected, so that the transparent film can be used to see through the bag.

The present invention is not limited to this embodiment. For example, there is no limitation on the material of the water-absorbent / ventilating material arranged on a part of the degassing bag and the portion provided. As the water-absorbent air-permeable material, other than non-woven fabric, pulp paper or pulp non-woven fabric mixed with a plastic resin to give a heat-sealing property may be used, but it must be water-insoluble and heat and cold resistant. Water absorption in this case includes not only absorption of water into the material of the non-woven fabric but also invasion and retention of the fibers of the non-woven fabric. There is a large amount of retention.

In addition to the heat-sealing portion, the ventilation material is disposed between the heat-resistant perforated plastic films 31 and 32 having the through holes 30 as shown in FIG. 6 as a ventilation material. A film having a plastic non-woven fabric 33 adhered thereto may be used as a part to form a bag. In this case, the non-woven fabric 33 itself that has absorbed the drip does not come into contact with the food, but the plastic film on the back surface comes into contact with it, which is hygienic.
When the breathable material is interposed in the plastic film, the type and structure of the plastic film are not limited, but it is required to have heat resistance and cold resistance that are water-insoluble and can withstand heating and freezing.

Further, for degassing remaining in the bag after heating and precooking, if the vent material is already in a water-containing state such as being boiled, it is stored in the vacuum chamber as it is and gas is sucked into a vacuum state. Good. When the aeration material is not in a water-containing state, or even in a water-containing state, the impregnation quenching by exposing to water or immersing in a water tank is most suitable for vacuum packaging. In this case, as the water content of the ventilating material, water can be used as long as it does not interfere with food such as various sterilizing water and preservative.

Further, the food to be contained may be corn, vegetables such as potatoes, carrots, processed foods such as takoyaki, and various semi-prepared foods.

[0016]

According to the first aspect of the present invention, since the gas can be released by aeration of the aeration material, it can be heated by a microwave oven or steam.
In the frozen storage, the moisture contained in the ventilation material freezes to form an ice layer, so the ventilation inside and outside the bag during storage is blocked, freezing and burning are prevented, and it can be stored satisfactorily. The effect that can be used until frozen storage and main cooking is great. According to the second aspect, since the ventilation member is provided in the heat seal portion, the film of the bag body can be arbitrarily selected, so that the inside of the bag can be seen through using the transparent film.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of the present invention.

FIG. 2 is an enlarged partial cutaway view of the heat seal portion.

FIG. 3 is an enlarged perspective view of a further main part thereof.

FIG. 4 is a perspective view showing a state of being expanded by heating.

FIG. 5 is a perspective view of a frozen state.

FIG. 6 is an enlarged cross-sectional view of another example film of the bag body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bag body 10 Heat-sealing part 11 Film 12 Nonwoven fabric 13 Heat-sealing part 2 Corn 30 Through hole 31,32 Film 32 Nonwoven fabric

Claims (3)

[Claims] 1. A food bag is housed and sealed by using a degassing bag for ventilating the inside and outside of the bag through a water-insoluble, heat-resistant and cold-resistant water-absorbent ventilation material provided in a part of the bag. After that, the ventilating material is heated and precooked in a microwave oven or steam while degassing the expansive gas, and then, in the bag state, if the ventilating material is in a water-containing state, it is rapidly cooled as it is. It is characterized by containing water if it is in a water-containing state and then rapidly cooling it, removing the gas remaining in the bag by the rapid cooling, freezing the water content of the aeration material, and blocking the aeration inside and outside the bag with the ice layer and storing it. How to save and preserve foods. 2. After pre-cooking by heating, the bag is impregnated into the water tank as it is to release the gas remaining in the bag to make a vacuum state, and the ventilation material is made to contain water, and then the bag is pulled up from the water tank. The method according to claim 1, wherein the food is rapidly cooled and frozen. 3. A non-heat-sealed non-adhesive portion is provided on a heat-sealed portion of the bag body by heat sealing via a vent material, and the intervening vent material is formed into a bag body which remains in communication with the bag from the outer end surface. The cooking and storage method according to claim 1 or 2, which is used as a storage medium.