JPH06125752A - Vacuum-packaging of liquid - Google Patents

Abstract

PURPOSE:To enable the easy vacuum-packaging of a liquid material in high efficiency while preventing the intrusion of the liquid to a sealing part. CONSTITUTION:A hamburg steak and a seasoning sauce for a retort-pouch food are vacuum-packaged in one pouch in separated state. The hamburg steak 3 is inserted into the 1st holding part A of the pouch 1 and a frozen and solidified sauce 4 is inserted into the 2nd holding part B. Both holding parts A and B are evacuated and sealed. In the case of the vacuum-packaging of exclusively a liquid material, the frozen and solidified liquid material is put into a pouch, evacuated and sealed. Since a liquid material is vacuum-packaged in a solidified state, there is no intrusion of the liquid to the sealing part and the vacuum- packaging can be carried out by a process similar to the packaging of a solid material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for vacuum packaging a liquid material in a retort pouch food or the like.

[0002]

2. Description of the Related Art In retort pouch foods, the contents are vacuum packaged and then sterilized at high temperature, but if air is contained in the bag (pouch), the bag may burst during high temperature sterilization.
Also, the contents are oxidized and deteriorated. Therefore, in this type of package, vacuum packaging is performed by using a vacuum chamber so that the bag is sealed in a state where air is completely evacuated, or by inserting a nozzle into the bag to evacuate air and then sealing. Be seen. However, if the content is a liquid, the content may flow out when the chamber containing the bag is evacuated or when air is deflated by the nozzle. Measures are needed.

In Japanese Patent Laid-Open No. 60-134814, in order to prevent the liquid content from flowing out during vacuum packaging, the mouth of a bag filled with a liquid or a content containing a liquid is provided with a frame and a metal fitting inside the chamber. It has been described that it can be sandwiched between, or placed on a saucer bag filled with liquid or contents containing liquid, and put on the side wall at a certain height of the mouth portion of the saucer into the chamber. . In addition, JP-A-57-17
As described in Japanese Patent No. 5521, for example, when a hamburger and a seasoning liquid are integrally packaged, a liquid-free object to be packaged is put in a bag, and after vacuuming the surroundings, the liquid is put in the bag under a vacuum environment. Some are known to replenish. Also, for example, in the case of a package that is small and light in weight, such as ramen sauce, a method in which a liquid is filled in a tubular bag and the seal bar is pressed to force the seal. Is used.

[0004]

In the case of a package having a small bag and a small weight, such as a ramen sauce, it is possible to forcefully seal the contents in the bag as described above. However, for example, when the bag is relatively large and heavy, such as hamburger sauce, especially when solid matter is mixed,
As described above, even if the seal portion is forcibly pressed in a state where the liquid material is fully filled, it is impossible to completely remove the contents from the seal portion, and a sealing failure due to biting will inevitably occur. This situation is the same in the case of inserting the nozzle into the bag and bleeding air, except for a special case that is small and light in weight. Generally, liquid matter is sandwiched between the seal parts and a seal failure occurs. . Further, when a chamber is used, it is possible to prevent the liquid contents from overflowing by the method described in each of the above-mentioned publications, but in both cases, the device is large and the work efficiency is not good.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a simple and efficient vacuum packaging method capable of vacuum packaging a liquid material while preventing the seal portion from being bitten. To aim.

[0006]

A vacuum packaging method according to the present invention is characterized in that a liquid material is frozen and solidified, then put in a bag and deaerated for packaging.

[0007]

The liquid material solidified by freezing is put in a bag and deaerated and sealed in the same manner as a normal solid material, so that the complete vacuum packaging without biting the contents becomes possible.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a state in which contents are inserted in a retort pouch according to an embodiment of the present invention. This example
A hamburger, which is a retort pouch food, and a sauce for seasoning are divided into one pouch and vacuum-packaged. The pouch 1 is composed of two films, and has three peripheral seal parts 2a, 2b, 2c in advance. Intermediate partition seal part 2d
Are sealed and the first and second housings A and B of two sizes are provided.
Are formed.

A hamburger 3 is inserted into the first accommodating portion A of the pouch 1 as shown in FIG. In addition, the sauce 4 which has been frozen and solidified in advance is inserted into the second accommodation portion B of the pouch 1. Then, the pouch 1 containing the hamburger 3 in the first container A and the solid sauce 4 in the second container B is transferred to a nozzle suction type vacuum packaging unit (not shown), After degassing both of the accommodating parts A and B, the lip seal part 2e is sealed as shown in FIG. In the vacuum-wrapped package, the sauce 4 returns to a liquid state with the passage of time.

The film forming the pouch 1 is, for example, stretched nylon (15μ) / polyethylene (40μ).
Alternatively, a laminated film of polypropylene (40μ) or a laminated film of stretched nylon (15μ) / aluminum (9μ) / polyethylene (40μ) or polypropylene (40μ) is used.

In the above embodiment, the case where the solid hamburger and the liquid sauce are divided into one pouch and vacuum packed is described. However, the present invention is of course applicable to the vacuum packing of only the liquid. Applicable.

The present invention can also be applied to other than retort pouch foods.

[0014]

As described above, according to the present invention, since the liquid material is vacuum-packed in the solidified state, it is easy and efficient in the same manner as in the case of the solid material while preventing the liquid material from being bitten into the seal portion. The liquid material can be vacuum packaged by the method.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a vacuum packaging method according to an embodiment of the present invention in a state where contents are inserted in a retort pouch.

FIG. 2 is an overall view of a package according to a vacuum packaging method of an embodiment of the present invention.

[Explanation of symbols]

 1 pouch 2e lip seal part 3 hamburger sauce 4 (liquid substance)

Claims (1)

[Claims] 1. A vacuum packaging method for a liquid material, which comprises freezing and solidifying the liquid material, placing it in a bag, degassing and packaging.