JP3238347U - Exhaust bag for microwave oven - Google Patents

Abstract

An object of the present invention is to provide an evacuation bag for a microwave oven that reduces the tendency of an arc-shaped fragile portion to burst as a whole. A microwave vent bag including a sealable bag is provided with a pressure relief assembly (2) at an arbitrary position of the bag, the pressure relief assembly including two membrane bodies (21) provided facing each other. The two membrane bodies are heat-sealed in close contact, an arc-shaped fragile portion 3 is provided between the two membrane bodies, and the heat seal strength at the position corresponding to the fragile part of the two membrane bodies is the same as that at other positions of the bag body. Less than the heat seal strength, the arcuate area of weakness protrudes toward the bag. A stress concentrating portion 31 is provided at a position near the bag of the fragile portion of the two membranes to guide the fragile portion to tear, and the stress concentrating portion protrudes toward the bag. An exhaust portion 4 is provided at a position away from the bag body in the fragile portion of the two membranes, and portions corresponding to the positions of the exhaust portions of the two membranes are separated, and notches 41 are formed in both. [Selection drawing] Fig. 2

Description

The present invention relates to the field of packaging bags, and particularly to exhaust bags for microwave ovens.

As the rhythm of life accelerates in big cities, young people become more fond of instant foods, and it is common in the food and beverage industry to use microwave ovens to heat fully cooked or semi-cooked foods, and young people are half. I like to buy cooked foods and heat them quickly at home to eat.

Along with this, further sophistication of food packaging is required, and sealed packaging bags are easy to pop with steam in the process of heating food in a microwave oven, and food can easily pop out from the popped packaging bag and break the microwave oven. There is sex.

Conventionally, in some exhaust bags, an arc-shaped fragile portion is provided at the heat seal position, and if this portion is torn first by steam, the steam is more likely to be discharged from the exhaust bag.

With the above-mentioned related technology, the exhaust bag is provided with a fragile arc-shaped fragile part, but stress is less likely to concentrate on the arc-shaped fragile part with a smooth curve, and the arc-shaped fragile part is in the process of actually using it. The air pressure in the bag is dispersed throughout, the entire arc-shaped fragile part suddenly bursts and easily emits an explosion sound, and when a large amount of water vapor blows out from the suddenly bursting arc-shaped fragile part as a whole, the contents in the bag can be blown out. The sex goes up.

The present invention has been made to alleviate the tendency of the arc-shaped fragile portion to burst as a whole, and provides an exhaust bag for a microwave oven.

The following technical proposal is adopted for the exhaust bag for a microwave oven according to the present invention.
An exhaust bag for a microwave oven containing a sealable bag, the pressure relief assembly is provided at an arbitrary position on the bag, and the pressure relief assembly includes two membranes provided facing each other. It is provided so as to be in close contact with the heat seal, an arc-shaped fragile portion is provided between the two membrane bodies, and the heat seal strength at the position corresponding to the fragile portion of the two membrane bodies is the heat at the other position of the bag body. It is lower than the seal strength, and the arc-shaped area of the fragile part protrudes toward the bag body.
A stress concentration part that guides the fragile part to tear is provided at a portion corresponding to a position close to the bag body of the fragile part of the two membrane bodies, and the stress concentration part is provided so as to protrude toward the bag body.
Exhaust parts are provided in the parts corresponding to the positions of the fragile parts of the two membrane bodies away from the bag body, and the parts corresponding to the positions of the exhaust parts of the two membrane bodies are separately provided, and the two membranes are provided. Notches are made in each part corresponding to the position of the exhaust part of the body.

By adopting the above technical proposal, when the bag body expands due to the steam generated by heating the food in the bag body, the expanding bag body pulls the two membrane bodies of the assembly away from each other so as to be fragile. The stress concentration part protruding from the part is first torn by the pressure and the two membranes being separated, and then the torn stress concentration part guides the fragile part with low heat seal strength to be slowly torn. In this process, the stress concentration part and the part corresponding to the position of the fragile part of the two membrane bodies are gradually separated, the water vapor in the bag is slowly discharged from the bag body from the exhaust part, and the entire arc-shaped fragile part suddenly bursts. The possibility of emitting a blast is reduced, and the possibility of a large amount of water vapor being blown out from the suddenly bursting arc-shaped fragile part as a whole and taking out the contents is reduced.

The notch in the membrane body helps to reduce the possibility that water vapor quickly escapes from the exhaust section and the water droplets collected in the exhaust section adhere to the separated membrane body by tension.

In one example, the shape of the notch can be linear, arcuate, circular, square, or special.

By adopting the above technical proposal, the notch of the membrane body reduces the possibility that water vapor quickly escapes from the exhaust part and the water droplets collected in the exhaust part adhere to the separated membrane body by tension. Useful.

In one example, the regions corresponding to the fragile portions of the two membrane bodies are provided with an interface layer having an effect of reducing the heat seal strength on the side close to each other, and the fragile portions are provided with each other of the two interface layers. It is installed at the position where it is heat-sealed.

By adopting the above technical proposal, the interface layer reduces the heat seal strength corresponding to the fragile parts of the two membrane bodies, and when the pressure relief part receives pressure and is separated from the bag body, the interface layer becomes It is easy to separate from each other, and the exhaust effect of fragile parts is improved.

In one example, in addition to the position of the fragile portion, the heat seal strength of the two membrane bodies is higher than the heat seal strength of the fragile portion and lower than the heat seal strength of the edge of the bag body at the other heat seal positions.

By adopting the above technical proposal, the heat seal strength corresponding to the fragile parts of the two membrane bodies is the lowest, so that the water vapor is discharged from the bag body smoothly from the fragile parts and the exhaust part that were set first. Useful for. The overall heat seal strength of the two membranes is also lower than the heat seal strength of the bag, and if the pressure of the water vapor is too high or the fragile part is clogged and cannot function, the water vapor will make the two films as a whole the edge of the fragile part. It can be gradually separated from the water vapor and torn to reduce the possibility of the bag popping in the microwave.

In one example, the two membrane bodies are provided with a cavity that is not heat-sealed corresponding to the side closer to the bag body of the fragile part, the cavity communicates with the inside of the bag body, and the cross-sectional area of the cavity is closer to the bag body. Gradually shrinks toward the vulnerable part.

By adopting the above technical proposal, setting the cross-sectional area of the cavity to gradually shrink from the side closer to the bag body to the side closer to the fragile part helps the water vapor separate and separate the two membrane bodies. The pressure received by the two membranes is concentrated on the stress concentration part and the fragile part, making it easier to tear the fragile part and helping to discharge water vapor more smoothly.

In one example, the bag type is a three-way seal.

By adopting the above technical proposal, the bag body of the three-way seal has good airtightness, a simple structure and low cost, and is a form often used for evacuation.

In one example, the type of bag is a Happo seal.

By adopting the above technical proposal, the bag body of the Happo seal has a large capacity and has eight printing surfaces, so that the product information can be displayed more completely and sufficiently.

In one example, the bag type is a self-supporting bag.

By adopting the above technical plan, the self-standing bag can stand stably and is useful for display on shelves.

In one example, the type of bag is a side-folded bag.

By adopting the above technical plan, the capacity of the side-folding bag is large and more food can be accommodated.

In one example, the bag type is a specially shaped bag.

By adopting the above technical proposal, the specially shaped bag helps the trader to design the novel appearance of the product.

As can be seen from the above, the present invention has the following beneficial effects.
1. The parts corresponding to the positions of the stress concentration part and the fragile part of the two membrane bodies are gradually separated in the process of expansion of the bag body, and the water vapor in the bag body is slowly discharged from the bag body from the exhaust part, and is arcuate. The possibility that the entire fragile part suddenly bursts and emits an explosion sound is reduced, and the possibility that a large amount of water vapor blows out from the suddenly bursting arc-shaped fragile part and takes out the contents is reduced.
2. 2. The notch in the membrane body helps to reduce the possibility that water vapor quickly escapes from the exhaust section and the water droplets collected in the exhaust section adhere to the separated membrane body by tension.
3. 3. The interface layer reduces the heat seal strength corresponding to the fragile part of the two membrane bodies, and when the pressure release part receives pressure and is separated from the bag body, the interface layer is easily separated from each other, and the exhaust effect of the fragile part. Is improving.

FIG. 1 is a schematic structural diagram of an exhaust bag for a microwave oven according to an embodiment of the present invention. FIG. 2 is a schematic structural diagram of a fragile portion of a protruding fragile portion of an exhaust bag for a microwave oven according to an embodiment of the present invention. FIG. 3 is a schematic structural diagram of the protruding interface layer of the exhaust bag for a microwave oven according to the embodiment of the present invention. FIG. 4 is a schematic structural diagram of various forms of an exhaust bag for a microwave oven according to an embodiment of the present invention.

Next, the present invention will be described in more detail with reference to FIGS. 1 to 4.

An embodiment of the present invention discloses an exhaust bag for a microwave oven. As shown in FIG. 1, a sealable bag 1 is included, and a pressure relief assembly 2 is provided at an arbitrary position on the bag 1.

As shown in FIGS. 2 and 3, the pressure relief assembly 2 includes two face-to-face membranes 21 which are provided so that the two membranes 21 are in close contact and heat-sealed. An arc-shaped fragile portion 3 is provided between the two membrane bodies 21, and the heat seal strength at the position corresponding to the fragile portion 3 of the two film bodies 21 is lower than the heat seal strength at the other positions of the bag body 1, and the arc-shaped fragile portion 3 is formed. The region protrudes toward the bag body 1, and the region corresponding to the fragile portion 3 of the two film bodies 21 is provided with the interface agent layer 22 having an effect of reducing the heat seal strength on the side close to each other. The fragile portion 3 is provided at a position where the two interface layer 22 are heat-sealed with each other. The interface layer 22 reduces the heat seal strength corresponding to the fragile portion 3 of the two membrane bodies 21, and the interface layer 22 is easily separated from each other when the pressure release portion receives pressure and is separated from the bag body 1. The exhaust effect of the fragile portion 3 is improved.

As shown in FIGS. 2 and 3, a stress concentration portion 31 for guiding the fragile portion 3 to tear is provided at a portion corresponding to the position of the fragile portion 3 of the two membrane bodies 21 near the bag body 1, and stress is applied. The concentration portion 31 is provided so as to protrude toward the bag body 1. When the bag 1 expands due to the steam generated by heating the food in the bag 1, the expanding bag 1 releases pressure and pulls the two membranes 21 of the assembly 2 away from each other and protrudes from the fragile portion 3. The stress concentration portion 31 is torn first by separating the pressure and the two film bodies 21, and then the torn stress concentration portion 31 guides the fragile portion 3 having a low heat seal strength to be slowly torn. The parts corresponding to the positions of the stress concentration part 31 and the fragile part 3 of the two film bodies 21 are gradually separated in this process, and the water vapor in the bag body 1 is slowly discharged from the bag body 1 from the exhaust part 4. The possibility that the entire arc-shaped fragile portion 3 suddenly bursts and emits an explosion sound is reduced, and the possibility that a large amount of water vapor is blown out from the arc-shaped fragile portion 3 that suddenly bursts as a whole to take out the contents is reduced.

As shown in FIGS. 2 and 3, an exhaust portion 4 is provided at a portion corresponding to a position of the fragile portion 3 of the two membrane bodies 21 away from the bag body 1, and an exhaust portion of the two membrane bodies 21 is provided. The portions corresponding to the positions of 4 are provided separately, and notches 41 are opened in the portions corresponding to the positions of the exhaust portions 4 of the two membrane bodies 21, and the shapes of the notches 41 are linear, arcuate, and so on. It can be circular, square, or a special shape. The notch 41 of the membrane body 21 helps to reduce the possibility that water vapor quickly escapes from the exhaust unit 4 and the water droplets collected in the exhaust unit 4 adhere to the membrane body 21 separated by tension.

As shown in FIGS. 2 and 3, the two film bodies 21 have a heat seal strength higher than that of the fragile portion 3 at other heat seal positions other than the position of the fragile portion 3, and the edge of the bag body 1. It is lower than the heat seal strength of. Since the heat seal strength corresponding to the fragile portion 3 of the two membrane bodies 21 is the lowest, it is useful for the water vapor to be smoothly discharged from the bag body 1 from the fragile portion 3 and the exhaust portion 4 that have been set first. The overall heat seal strength of the two film bodies 21 is also lower than the heat seal strength of the bag body 1, and when the pressure of the water vapor is too high or the fragile portion 3 is clogged and cannot function, the water vapor makes the two film bodies 21 as a whole. It is possible to reduce the possibility that the bag body 1 pops in the microwave oven by gradually separating it from the edge of the fragile portion 3 and tearing it. The two membrane bodies 21 are provided with a cavity 5 that is not heat-sealed corresponding to the side of the fragile portion 3 close to the bag body 1, the cavity 5 communicates with the inside of the bag body 1, and the cross-sectional area of the cavity 5 is a bag. It gradually shrinks from the one closer to the body 1 to the one closer to the vulnerable part 3. Setting the cross-sectional area of the cavity 5 to gradually shrink from the side closer to the bag body 1 to the side closer to the fragile portion 3 helps the water vapor separate and separate the two membrane bodies 21, and the two membrane bodies 21. The pressure received by the fragile portion 31 is concentrated on the stress concentration portion 31 and the fragile portion 3, which makes it easier to tear the fragile portion 3 and helps to discharge water vapor more smoothly.

As shown in FIG. 4, the type of the bag body 1 is one of a three-way seal 8, an eight-way seal 7, a self-standing bag 9, a side-folded bag 6, and a bag having a special shape. The bag 1 of the three-way seal 8 has good airtightness, a simple structure and low cost, and is a form often used for evacuation. Since the bag 1 of the Happo seal 7 has a large capacity and has eight printing surfaces, product information can be displayed more completely and sufficiently. The self-supporting bag 9 can stand stably and is useful for display on shelves. The specially shaped bag helps the trader design a novel look for the product.

The implementation principle of the exhaust bag for a microwave oven in the embodiment of the present invention is as follows. When the bag 1 expands due to the steam generated by heating the food in the bag 1, the expanding bag 1 releases pressure and pulls the two membranes 21 of the assembly 2 away from each other and protrudes from the fragile portion 3. The stress concentration portion 31 is torn first by separating the pressure and the two film bodies 21, and then the torn stress concentration portion 31 guides the fragile portion 3 having a low heat seal strength to be slowly torn. The parts corresponding to the positions of the stress concentration part 31 and the fragile part 3 of the two film bodies 21 are gradually separated in this process, and the water vapor in the bag body 1 is slowly discharged from the bag body 1 from the exhaust part 4. The possibility that the entire arc-shaped fragile portion 3 suddenly bursts and emits an explosion sound is reduced, and the possibility that a large amount of water vapor is blown out from the arc-shaped fragile portion 3 that suddenly bursts as a whole and the contents are taken out is reduced.

The notch 41 of the membrane body 21 helps to reduce the possibility that water vapor quickly escapes from the exhaust unit 4 and the water droplets collected in the exhaust unit 4 adhere to the membrane body 21 separated by tension. Setting the cross-sectional area of the cavity 5 to gradually shrink from the side closer to the bag body 1 to the side closer to the fragile portion 3 helps the water vapor separate and separate the two membrane bodies 21, and the two membrane bodies 21. The pressure received by the fragile portion 31 is concentrated on the stress concentration portion 31 and the fragile portion 3, which makes it easier to tear the fragile portion 3 and helps to discharge water vapor more smoothly.

The embodiment of the present invention alleviates that the arc-shaped fragile portion 3 is liable to burst as a whole.

The above is a preferred embodiment of the present invention, which does not limit the scope of protection of the present invention. Equivalent changes based on the structure, shape, and principles of the present invention are all included in the scope of protection of the present invention.

1 Bag body 2 Pressure relief assembly 21 Membrane body 22 Interface layer 3 Fragile part 31 Stress concentration part 4 Exhaust part 41 Notch 5 Cavity 6 Side folding bag 7 Happo seal 8 Three-way seal 9 Self-supporting bag

Claims (9)

A sealable bag (1) is included, the bag (1) is provided with a pressure relief assembly (2), and the pressure relief assembly (2) includes two membranes (21) provided facing each other and two. The membrane body (21) is provided so as to be in close contact with each other and heat-sealed, an arc-shaped fragile portion (3) is provided between the two membrane bodies (21), and the fragile portion (3) of the two membrane bodies (21) is provided. The heat seal strength at the position corresponding to) is lower than the heat seal strength at the other positions of the bag body (1), and the arcuate region of the fragile portion (3) protrudes toward the bag body (1).
A stress concentration portion (31) that guides the fragile portion (3) to tear is provided at a portion corresponding to a position close to the bag body (1) of the fragile portion (3) of the two membrane bodies (21). The portion (31) is provided so as to protrude toward the bag body (1).
An exhaust portion (4) is provided at a portion corresponding to a position of the fragile portion (3) of the two membrane bodies (21) away from the bag body (1), and the exhaust portion (exhaust portion) of the two membrane bodies (21). The portion corresponding to the position of 4) is provided separately, and a notch (41) is provided in each portion corresponding to the position of the exhaust portion (4) of the two membrane bodies (21). Exhaust bag for microwave oven. The exhaust bag for a microwave oven according to claim 1, wherein the shape of the notch (41) is linear, arcuate, circular, or square. The region corresponding to the fragile portion (3) of the two membrane bodies (21) is provided with an interface layer (22) having an effect of reducing the heat seal strength on the side close to each other, and the fragile portion (3) is provided. The microwave oven exhaust bag according to claim 1, wherein the two interface layers (22) are provided at positions where they are heat-sealed from each other. The heat seal strength of the two film bodies (21) is higher than the heat seal strength of the fragile part (3) at the heat seal positions other than the position of the fragile part (3), and the heat seal strength of the edge of the bag body (1). The microwave oven exhaust bag according to claim 1, which is characterized by being lower. The two membrane bodies (21) are provided with a cavity (5) that is not heat-sealed corresponding to the side of the fragile portion (3) close to the bag body (1), and the cavity (5) is the bag body (1). The microwave oven exhaust according to claim 1, wherein the cross-sectional area of the cavity (5) gradually shrinks from the side closer to the bag body (1) to the side closer to the fragile part (3). bag. The exhaust bag for a microwave oven according to claim 1, wherein the type of the bag body (1) is a three-way seal (8). The exhaust bag for a microwave oven according to claim 1, wherein the type of the bag body (1) is an eight-sided seal (7). The exhaust bag for a microwave oven according to claim 1, wherein the type of the bag body (1) is a self-supporting bag (9). The exhaust bag for a microwave oven according to claim 1, wherein the type of the bag body (1) is a side-folded bag (6).

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