JPH05199857A - Sterilely packaging method for boiled rice - Google Patents

Abstract

PURPOSE:To obtain boiled rice retaining the water content and soft bulkiness during its boiling by packing a flexible pack with boiled rice after boiled at a highest possible temperature followed by deaeration and then encapsulating an inert gas into the pack and by sealing in a pressurized state. CONSTITUTION:A conditioning machine 2 is first fed with boiled rice 1 after boiled, and a specified amount of the rice is weighed in a clean room (<= class 1000) and packed into a flexible pack 4 at temperatures as high as possible (60-100 deg.C). The pack is then deaerated in a deaeration-N2 encapsulation zone 6 prior to sealing and encapsulated with N2 or anther inert gas, and then sealed in a sealing zone 7 in a pressurized state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for aseptic packaging of cooked rice, which is capable of packaging delicious cooked rice by keeping it fluffy and moderately watery.

[0002]

2. Description of the Related Art A conventional method for packaging cooked rice is shown in FIG. Conventionally, cooked rice is filled 22 in a molding pack 21 (a container that is not rigid or flexible), and after deoxidation (insertion of a deoxidizing material), the upper lid packaging material 23 is sealed to produce a product 24. However, in this conventional packaging method, when the consumer heats the cooked rice in the molding pack, the hole 25 is formed in the upper lid packaging material 23.
It was common to heat up at the end of the hour, at which time there was a few percent water evaporation. In addition, the cooked rice in the pack 21 may be compressed by crushing, including during product distribution, which hinders the softness of the cooked rice.

[0003]

In the past, cooked rice was filled in a molding pack 21 (a container that is not a flexible pack) and sealed to obtain a product. When the consumer heats in a microwave oven or the like, it is necessary to make a hole 25 in the pack 21 in advance and heat the pack 21 in view of sealing strength. Therefore, there is a problem that the water content, which is one of the deliciousness of cooked rice, decreases (about 3%). Further, since the pack is not pressure-sealed, the cooked rice in the pack may be compressed and the softness which is one of the deliciousness of cooked rice may be hindered. The present invention is intended to provide a method for aseptic packaging of cooked rice, which can significantly improve the above-mentioned conventional problems (reduction of water content of cooked rice and consolidation after packing).

[0004]

Therefore, according to the present invention, the cooked rice is cut into small pieces, the predetermined quantity of the cooked rice is weighed in a clean room (class 1,000 or less), and a deep drawing wrapping machine is used. filled with as high as possible (60 to 100 [° C.) in molded flexible pack, and with prior sealed in the same pack thoroughly degassed, further encapsulating the N ₂ or other inert gas, under pressure Seal and
Further, in order to improve the pack sealing property, the cooked rice is cooled before sealing, the sealing surface is heated, or a combination of both is used to remove steam on the sealing surface, which causes a sealing failure. This is a means for solving the problem.

[0005]

According to the present invention, cooked rice is cut into pieces, filled in a molding pack (flexible pack), sufficiently degassed, further filled with N ₂ or other inert gas, and sealed under pressure. As a result, delicious cooked rice (rice cooked with water retention and fluffiness during cooking) can be obtained.

[0006]

2. Description of the Prior Art The present invention will be described below with reference to the accompanying drawings. FIG. 1 shows an apparatus for carrying out the method of the present invention. In FIG. 1, the cooked rice 1 after being cooked is supplied to a sharpening machine 2. After the rice in the sharpening machine 2 is sufficiently loosened by a plurality of sharpening rakes 3, a predetermined amount is weighed in a clean room (class 1,000 or less) and the flexible pack 4 molded in the packaging machine is filled with a predetermined amount. To be done. This filling is performed at a temperature as high as possible (60 to 100 ° C.) in order to improve the measuring accuracy of a predetermined amount of cooked rice and the sterilizing effect. The packaging machine is a deep-drawing type, and is molded into a set shape by the molding unit 5. The cooked rice 1 that has been filled into the flexible pack 4 is being upper cover wrapping the film 9 unwound is sealed, degassed prior seal · N ₂ encapsulation 6
The inside of the pack 4 is deaerated and the inside of the pack 4 is filled with N ₂ or other inert gas, and then the pack 4 is sealed and cut into packs, and the product 8 is discharged out of the machine. Further, in order to improve the sealing property in the pack seal, the cooked rice 1 is cooled before sealing, the sealing surface is heated, or steam is removed from the sealing surface which causes a sealing failure by a combination of both to perform sealing. .. Further, in order to improve deoxidation in the pack 4, a deoxidizing material is adhered to the inner surface of the upper lid for the pack formed of the film 9 to perform the pack.

[0007]

As described above in detail, according to the present invention, N ₂
Or, by enclosing other inert gas and filling the flexible pack with stronger sealing strength than usual, compression by crushing the cooked rice in the pack also disappears,
Also, it can be heated without making holes during heating. As a result, the water content does not decrease (about 3%) as in the case of punching, that is, when the consumer heats (microwave oven etc.), there is no loss of water, so the softness is maintained, and the pack The effect of steaming inside is also produced, and the same delicious cooked rice as immediately after cooking can be obtained.

[Brief description of drawings]

FIG. 1 is a side view showing an example of an apparatus for carrying out the aseptic packaging method for cooked rice of the present invention.

FIG. 2 is an explanatory view showing a conventional method for packaging cooked rice.

[Explanation of symbols]

1 Cooked rice 2 Shari cut 3 Rake 4 Flexible pack 5 Molding part of deep drawing packaging machine 6 Degassing / N ₂ enclosing part 7 Seal part 8 Product 9 Film

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroaki Kojima 430 Nakano, Ebina Ichikawa Act Stock Association In-house (72) Inventor Toshi Fujii 430 Nakano, Ebina Ichikawa Act Stock Association In-house

Claims (2)

[Claims] 1. Cooked rice is cut into pieces, and the rice is weighed in a clean room (class 1,000 or less) at a predetermined amount. Aseptic packaging of cooked rice, characterized in that it is filled with 60 to 100 ° C.), the inside of the pack is sufficiently degassed before sealing, N ₂ or other inert gas is further sealed, and sealing is performed under pressure. Method. 2. The method for aseptic packaging of cooked rice according to claim 1, wherein the cooked rice is cooled before sealing, the sealing surface is heated, or a combination of both is used to improve the sealability of the pack. Aseptic packaging method, characterized in that steam on the sealing surface is removed.