KR200216841Y1 - Pressure control valve of the container for cooking food - Google Patents

Abstract

The present invention relates to a pressure control structure of a food cooking container capable of cooking food as it is packaged in a flexible wrapping paper or packaging container, and in particular, easily adjusts the pressure without the impact of the pressure increase in the container by heating. It is also an object of the present invention to provide a pressure regulating structure of a new structure having the advantages of being able to flow in and out of the air and gas into and out of the container and to prevent the mixing of impurities and the like from the outside.

In order to achieve the above object, the present invention arranges two base film sheets having a structure in which a single layer or a multilayer is stacked in a state of forming voids, and seals the pores on the upper or lower surface of the base film sheet. Disclosed is a pressure regulating structure having a structure in which a sheet is bonded to a base film sheet to be contacted by heat fusion.

Description

Pressure control valve of the container for cooking food}

The present invention relates to a pressure control structure of a food cooking container capable of cooking food as it is packaged in a flexible wrapping paper or packaging container, and in particular, the pressure is almost shockless when the pressure expands due to steam generated by heating. The present invention relates to a pressure regulating structure having characteristics such as being able to adjust.

A food cooking container having such a structure is disclosed in detail in Korean Patent Laid-Open Publication No. 2000-50620, which has been filed by the present inventors. 1 shows an example of such a food cooking container, that is, the food cooking container 10 which can be eaten by simply heating the food without opening the package is made of a flexible material such as a plastic sheet. The top sheet 12 and the bottom sheet 13 having a structure in which a single sheet or two or more materials are laminated, and the end portions 14 are sealed after the food 15 is embedded therein, and the top sheet 12 It is provided with a pressure control structure 11 having a function of controlling the pressure by the steam generated from the built-in food during heating.

In the conventional pressure regulating structure 11, as shown in FIG. 2, the opening 22 is formed in a part of the top sheet 12, and the pressure regulating sheet is made of a flexible sheet in a form of closing the hole thereon. The structure 21 is bonded by the adhesive agent 23.

In addition, in the pressure regulating structure configured as described above, the adhesive uncoated portion 24 is formed at the center of the pressure regulating sheet 21, and the adhesive uncoated portion 30 includes the opening 22. It has a larger area than study (22) and is usually non-circular (eg an isosceles triangle). Therefore, the food 15 does not contact the adhesive 23, but only the adhesive uncoated portion 30, thereby preventing the food 12 from being contaminated. Then, when the container 10 is heated, the moisture of the food 15 is evaporated to change into water vapor, and the internal pressure of the container 10 is increased, and when the internal pressure is above a certain pressure, the pressure is controlled through the opening 22. The seat 21 starts to separate from the container 10, and when the bottom side of the isosceles triangle starts to be separated from the container 10 with a larger inclined side than the one side and the internal pressure reaches a predetermined pressure, one side of the pressure regulating valve 11 Is opened, and when the internal pressure of the container begins to decrease and the internal pressure becomes lower than the predetermined pressure, a part of the open pressure regulating sheet 21 comes into close contact with the container 11 again.

The container for cooking food with such a structure not only has a packaging function but also functions as a cooking utensil, which not only increases the product value of the food to be stored, but also preserves food for a long time, and is convenient because it only needs to be heated. It has the advantage of simply cooking food.

However, a food cooking container having a pressure regulating structure having such a structure must have a circular or elliptical through hole on the sheet constituting the container, so that a full opening may fail in mass production. Since there are a lot of debris cut at the time, this may act as a large claim to the final product, and there is a possibility that the vacuum may fall into this part due to the weak pressure control structure when vacuuming the food into the system package. When the food is heated and opened in the pressure control structure during cooking, the impact is large, and in some cases, the container moves largely, and the packaged food may flow out into the opening, such that the pressure control function is not easy. I have it.

The present invention is devised to solve the above problems, in particular, to perform the pressure control function without the impact of the pressure increase due to the generation of water vapor in the container, and easy to manufacture and manufacture the food cooking container having the pressure control structure In addition, the pressure regulating structure of the new structure has the advantages of being able to release the gas generated from the contents of the container to the outside and to suck air from the outside while preventing the incorporation of impurities such as dust. The purpose is to provide.

1 is a cross-sectional view showing an example of a food cooking container.

Figure 2 is a partially enlarged cross-sectional view of the pressure control structure of the conventional food cooking container

3 is a partially enlarged cross-sectional view of the pressure regulating structure formed in the film sheet according to the present invention.

<Description of the code | symbol about the principal part of drawing>

10: food cooking container 23: adhesive

11 pressure control structure 24 uncoated portion

12: upper film sheet 31: pressure control structure

13: bottom film sheet 32: base film sheet

14 terminal portion 33 porous film

15: food 34: voids

21: pressure control seat

22: opening

The present invention is a method for achieving the above object, by arranging two base film sheets having a structure laminated in a single layer or multiple layers in the form of a sclera, the pressure control function on the upper or lower surface of the base film Disclosed is a pressure regulating structure in which a porous film film sheet to be performed is bonded by thermal fusion.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 shows an example of the pressure control structure according to the present invention, that is, two base film sheets 32 stacked in a single layer or multi-layer arranged in a state formed with the gap 34 and a predetermined size on the upper or lower surface It shows the pressure control structure of the structure of the porous film sheet 33 of the combined by heat fusion, in the case of the food cooking container as shown in Figure 1a or 1b having a pressure control structure of this structure when the food itself upon heating it As the water vapor evaporates, the water vapor diffuses and the container 10 expands, so that the porous film sheet (for example, the nonwoven fabric) acts in accordance with the resistance when the vapor is discharged, so that the inside of the container is pressed to an appropriate level. It can be maintained.

In the present invention, the base film sheet 32 may be a polyethylene film, a polypropylene, nylon, polyester, or a thermoplastic film sheet such as PVC or a laminate of two or more film sheets can be used, the porous film sheet 33 is mainly thermoplastic Nonwoven fabrics of resin can be used.

Hereinafter, the present invention will be described in more detail with reference to Examples. In this case, the scope of the present invention is not limited by this embodiment.

EXAMPLE

Using a polyethylene film having a thickness of 0.05 mm as the base film sheet 32 and a polypropylene nonwoven fabric having a thickness of 0.1 mm as the porous film sheet 33 was cut to a size of 2 cm in width and 2 cm in length 3 It was bonded to the base film sheet by thermal fusion in a state in which the voids 34 were formed in the same form. The base film sheet and the unprocessed base film sheet having such a pressure control structure were cut into a width of 250 mm and a length of 145 mm, respectively, to prepare a plywood bag. 100 g of foot-beans cut into branches were put in this ensemble bag, and the end portions were sealed in a width of 10 mm and packaged in the form as shown in FIG. 1A. The prepared packaging container was put in the microwave to set a timer for 2 minutes to switch on. At 1 minute and 25 seconds, the moisture contained in the food material itself was gradually evaporated by heating, and water vapor diffused in the container and expansion was confirmed. After 1 minute and 30 seconds from the start of heating, the pressure in the container was about 1.5 kg / cm 2. The temperature rose to 110 ° C and the vessel exploded. As the amount of steam generated increased, the porous film sheet (non-woven fabric) acted in accordance with the resistance when the steam is discharged to maintain the pressure in the container at 1.3㎏ / ㎠, 106 ℃, cooking was completed after approximately 2 minutes.

In general, fresh vegetables such as cut beans and eggplants are packaged and sold using a mesh or the like because they breathe vigorously, but in this case, hygiene problems are likely to occur. In the case of the packaging container according to the present invention, the vegetables are metabolized. The gas, such as oxygen, carbon dioxide, and ethylene, must be gently vented to the inside of the container to prevent the mixing of trash, insects, and bacteria, and can be cooked as it is. The pressure control function can be easily progressed without impact due to the increase in pressure, and it has the usefulness of being able to continuously process in a film roll state without having to make a special opening.

Claims (2)

The two base film sheets 32 stacked in a single layer or multiple layers are arranged in a state where the voids 34 are formed, and the porous film sheet 33 of the structure sealing the voids is contacted on the upper or lower surface of the base film sheet. Pressure regulating structure of food cooking container, which is structured by combining base film sheet with heat fusion. The pressure regulating structure of a food cooking container according to claim 1, wherein the porous film sheet (33) is a thermoplastic nonwoven fabric.