Composite interlayer high-temperature retort pouch

Abstract

The utility model relates to a composite interlayer high-temperature retort pouch which comprises a first composite film and a second composite film, the edge of the first composite film is connected with the edge of the second composite film, and a bearing cavity is formed between the first composite film and the second composite film. The utility model relates to the technical field of high-temperature retort pouches. According to the composite interlayer high-temperature retort pouch, in the process of cooking the high-temperature retort pouch, water in the high-temperature retort pouch is evaporated to form steam, so that the retort pouch expands, and when air pressure in the retort pouch can push a pressure relief structure, the steam is discharged through a pressure relief pipe and a shunt pipe; and steam enters the interiors of the suspension structures on the two sides through the flow dividing pipe and the cavities in the first composite film and the second composite film, the pressure is reduced, the problem that the retort pouch is broken due to too high internal pressure is solved, and the effect of improving the safety is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature cooking bags, in particular to a composite sandwich high-temperature cooking bag. Background Art

[0002] A cooking bag is a composite plastic film bag that can be heat-treated. It has the advantages of both canned containers and boiling-water-resistant plastic bags. Therefore, it is also called a "soft can". It is suitable for packaging meat and soy products, being convenient, hygienic and practical, and can well preserve the original flavor of food, being favored by consumers.

[0003] In the prior art, when a high-temperature cooking bag is used in a household environment, since the surface of the cooking bag is relatively smooth after being boiled in water and is in high-temperature wastewater, it is difficult to pick it up with chopsticks or a spoon, and larger tools are required. During the process of picking up the cooking bag with tools, it is very easy to pierce or scratch the cooking bag. Since the structure of the high-temperature cooking bag is relatively simple and the inside is in a sealed state, when there are scratches or holes on the surface of the cooking bag, it is very easy for the internal pressure of the cooking bag to be too high, causing the cooking bag to explode, and there are certain safety hazards during use. Summary of the Utility Model

[0004] According to the deficiencies of the prior art, the purpose of the present utility model is to provide a composite sandwich high-temperature cooking bag to facilitate solving the technical problems mentioned in the above background art.

[0005] The above technical purpose of the present utility model is achieved through the following technical solutions:

[0006] A composite sandwich high-temperature cooking bag includes a first composite film and a second composite film. The edges of the first composite film and the second composite film are connected to each other, so that a bearing cavity is formed between the first composite film and the second composite film;

[0007] The first composite film and the second composite film have the same structure. A pressure relief pipe is commonly connected to the tops of the first composite film and the second composite film. A pressure relief structure is arranged inside the pressure relief pipe. Two shunt pipes are arranged on both sides of the top of the pressure relief pipe. Suspension structures are arranged on the corresponding sides of the first composite film and the second composite film.

[0008] Further, the pressure relief structure includes an annular block, which is installed inside the pressure relief pipe and fixedly connected to the pipe wall of the pressure relief pipe. An installation rod is arranged inside the annular block. A support rod fixedly connected to the annular block is arranged at the bottom end of the installation rod. A plurality of pressure relief plates are sleeved on the outer surface of the installation rod. The inner ring diameter of the annular block is much larger than the diameter of the installation rod.

[0009] Further, the pressure relief plate is bowl-shaped, with its outer arc surface facing the inside of the bearing cavity. The pressure relief plate is made of heat-resistant silica gel, and the edge of the outer arc surface of the pressure relief plate is attached to the inner wall of the pressure relief pipe.

[0010] Further, the first composite film is successively composed of a polyester film, a first aluminum foil layer, a second aluminum foil layer, and a polyolefin film. The sides of the first composite film and the second composite film with the polyolefin film are connected to each other.

[0011] Further, there is an interlayer cavity between the first aluminum foil layer and the second aluminum foil layer, and the shunt pipe is communicated with the interlayer cavity.

[0012] Further, the suspension structure includes an inflation tube connected to the side edge of the first composite film, and a conduit communicating with the interlayer cavity is arranged on the side wall of the inflation tube.

[0013] In summary, the present utility model includes at least one of the following beneficial technical effects:

[0014] 1. During the process of cooking the composite sandwich high-temperature cooking bag, the moisture inside the high-temperature cooking bag evaporates to form steam, causing the cooking bag to expand. When the air pressure inside the cooking bag reaches the level that can push the pressure relief structure, the steam is discharged through the pressure relief pipe and the shunt pipe, so that the steam enters the interiors of the suspension structures on both sides through the shunt pipe and the cavities inside the first composite film and the second composite film respectively, solving the problem of preventing the cooking bag from bursting due to excessive internal pressure and achieving the effect of improving safety.

[0015] 2. When the gas enters the interior of the interlayer cavity, the steam entering the interior of the interlayer cavity is introduced into the interior of the inflation tube through the conduit. Due to the entry of the gas, the inflation tube is pushed by the air pressure to expand at this time, increasing the buoyancy of the inflation tube, causing the side of the cooking bag with the inflation tube to float out of the water surface and be exposed to the air, so as to achieve the purpose of facilitating the picking up of the cooking bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of a composite sandwich high-temperature cooking bag of the present utility model.

[0018] Figure 2 It is a longitudinal sectional view of a composite sandwich high-temperature cooking bag of the present utility model.

[0019] Figure 3 The structural schematic diagram of a pressure relief structure of a composite sandwich high-temperature cooking bag of the present utility model.

[0020] Figure 4 The longitudinal plane sectional view of a composite sandwich high-temperature cooking bag of the present utility model.

[0021] Figure 5 The transverse plane sectional view of a composite sandwich high-temperature cooking bag of the present utility model.

[0022] Figure 6 A partial enlarged view of a composite sandwich high-temperature cooking bag of the present utility model Figure 4 is shown in the figure.

[0023] Figure 7 A partial enlarged view of a composite sandwich high-temperature cooking bag of the present utility model Figure 5 is shown in the figure.

[0024] In the figure, 1 is the first composite film; 101 is the polyester film; 102 is the first aluminum foil layer; 103 is the second aluminum foil layer; 104 is the polyolefin film; 105 is the sandwich cavity; 2 is the second composite film; 3 is the bearing cavity; 4 is the pressure relief pipe; 5 is the pressure relief structure; 501 is the annular block; 502 is the mounting rod; 503 is the support rod; 504 is the pressure relief plate; 6 is the shunt pipe; 7 is the suspension structure; 701 is the inflation pipe; 702 is the conduit. Specific embodiments

[0025] The following further describes the present utility model in detail with reference to the accompanying drawings.

[0026] Embodiment:

[0027] Referring to Figure 1 - Figure 7 , a composite sandwich high-temperature cooking bag disclosed by the present utility model includes a first composite film 1 and a second composite film 2. The edges of the first composite film 1 and the second composite film 2 are connected to each other, so that a bearing cavity 3 is formed between the first composite film 1 and the second composite film 2;

[0028] The first composite film 1 and the second composite film 2 have the same structure. The tops of the first composite film 1 and the second composite film 2 are commonly connected with a pressure relief pipe 4. A pressure relief structure 5 is arranged inside the pressure relief pipe 4. Two shunt pipes 6 are arranged on both sides of the top of the pressure relief pipe 4. Suspension structures 7 are arranged on the corresponding sides of the first composite film 1 and the second composite film 2.

[0029] In this embodiment, during the cooking process of the high-temperature cooking bag, the moisture inside the high-temperature cooking bag evaporates to form steam, causing the cooking bag to expand. When the air pressure inside the cooking bag reaches a level where it can push the pressure relief structure 5, the steam is discharged through the pressure relief pipe 4 and the shunt pipe 6, enabling the steam to enter the interiors of the suspension structures 7 on both sides through the shunt pipe 6 and the cavities inside the first composite film 1 and the second composite film 2 respectively;

[0030] Since the gas inside the cooking bag will flow out through the shunt pipe 6, it can reduce the pressure and prevent the cooking bag from bursting due to excessive internal pressure. And when the gas enters the interior of the suspension structure 7, due to the entry of the gas, the suspension structure 7 expands under the push of the air pressure at this time, increasing the buoyancy of the suspension structure 7, causing the side of the cooking bag with the suspension structure 7 to float out of the water surface and be exposed to the air. At this time, the component of the suspension structure 7 can be clamped to facilitate picking up the cooking bag.

[0031] In a further preferred embodiment of the present utility model, as Figures 1-7 shown, the pressure relief structure 5 includes an annular block 501. The annular block 501 is installed inside the pressure relief pipe 4 and fixedly connected to the pipe wall of the pressure relief pipe 4. An installation rod 502 is arranged inside the annular block 501. A support rod 503 fixedly connected to the annular block 501 is arranged at the bottom end of the installation rod 502. A plurality of pressure relief plates 504 are sleeved on the outer surface of the installation rod 502. The inner ring diameter of the annular block 501 is much larger than the diameter of the installation rod 502.

[0032] In this embodiment, the annular block 501 is provided to cooperate with the support rod 503 to fix the installation rod 502. Since the diameter of the installation rod 502 is much smaller than the inner ring diameter of the annular block 501, during use, the steam inside the cooking bag can be discharged through the gap between the inner ring of the annular block 501 and the installation rod 502. And through the setting of the pressure relief plates 504, the pressure relief pipe 4 is elastically sealed, so that the pressure relief pipe 4 is in a sealed state under normal atmospheric pressure. When the air pressure is relatively high, the gas pressure causes the pressure relief plates 504 to deform, enabling the gas to pass through the pressure relief pipe 4, thereby achieving the purpose of pressure relief and pressure reduction.

[0033] In a further preferred embodiment of the present utility model, as Figures 1-7 shown, the pressure relief plate 504 is bowl-shaped with its outer arc surface facing the inside of the bearing cavity 3. The pressure relief plate 504 is made of heat-resistant silica gel, and the edge of the outer arc surface of the pressure relief plate 504 is in contact with the inner wall of the pressure relief pipe 4.

[0034] In this embodiment, since the pressure relief plate 504 is bowl-shaped and its outer arc surface faces the inside of the bearing cavity 3, when the air pressure increases, it can effectively push the pressure relief plate 504 to deform, thus achieving the purpose of facilitating pressure relief and reducing pressure. Since there are multiple pressure relief plates 504, and the distance between two adjacent pressure relief plates 504 gradually increases in the direction from the bearing cavity 3 to the pressure relief pipe 4, when the pressure relief plates 504 are relieving pressure, the pressure relief plates 504 at various positions will contact and support each other to achieve the purpose of increasing the threshold of pressure relief.

[0035] In a further preferred embodiment of the present utility model, as Figures 1-7 shown, the first composite film 1 is successively composed of a polyester film 101, a first aluminum foil layer 102, a second aluminum foil layer 103, and a polyolefin film 104. The sides of the first composite film 1 and the second composite film 2 provided with the polyolefin film 104 are connected to each other.

[0036] In this embodiment, the polyester film 101 has excellent transparency, heat resistance, and wear resistance, and can provide good physical protection and durability;

[0037] The high barrier performance of the aluminum foil layer can effectively protect the food from external factors and oxidation, and at the same time has high heat resistance and pressure resistance, and can withstand high-temperature cooking treatment;

[0038] The polypropylene film has good heat resistance and pressure resistance, can remain stable in high-temperature and high-pressure environments, and has good oil resistance and chemical corrosion resistance, and is not easily eroded by the oil and chemical substances in the food;

[0039] Among them, the polyester film 101 and the first aluminum foil layer 102 are closely attached, the second aluminum foil layer 103 and the polyolefin film 104 are closely attached, and only the edges of the first aluminum foil layer 102 and the second aluminum foil layer 103 are attached to each other.

[0040] In a further preferred embodiment of the present utility model, as Figures 1-7 shown, there is a sandwich cavity 105 between the first aluminum foil layer 102 and the second aluminum foil layer 103, and the shunt pipe 6 is connected to the sandwich cavity 105.

[0041] In this embodiment, the sandwich cavity 105 is provided to connect the shunt pipe 6 and the suspension structure 7, so as to facilitate the steam inside the cooking bag to enter the suspension structure 7 and the sandwich cavity 105, so as to achieve the effect that the cooking bag automatically floats after cooking for a certain time, and achieve the purpose of facilitating the removal of the cooking bag from the boiling water.

[0042] In a further preferred embodiment of the present utility model, as Figures 1-7As shown, the suspension structure 7 includes an air charging tube 701 connected to the side of the first composite film 1, and a conduit 702 communicating with the interlayer cavity 105 is provided on the side wall of the air charging tube 701.

[0043] In this embodiment, through the arrangement of the conduit 702, the steam entering the interior of the interlayer cavity 105 is introduced into the interior of the air charging tube 701 to cause the air charging tube 701 to expand, so as to achieve the purpose of increasing buoyancy. The air charging tube 701 does not contain air inside under normal conditions and is flat.

[0044] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A composite sandwich high temperature cooking bag, characterized in that: It comprises a first composite film (1) and a second composite film (2), wherein the edges of the first composite film (1) and the second composite film (2) are connected to each other, so that a bearing cavity (3) is formed between the first composite film (1) and the second composite film (2); The first composite membrane (1) and the second composite membrane (2) have the same structure; the top ends of the first composite membrane (1) and the second composite membrane (2) are commonly connected to a pressure relief pipe (4); a pressure relief structure (5) is arranged inside the pressure relief pipe (4); two shunt pipes (6) are arranged on both sides of the top end of the pressure relief pipe (4); and a suspension structure (7) is arranged on the corresponding sides of the first composite membrane (1) and the second composite membrane (2).

2. A composite sandwich high temperature cooking bag according to claim 1, characterized in that: The pressure relief structure (5) comprises an annular stopper (501), which is installed inside the pressure relief pipe (4) and fixedly connected to the pipe wall of the pressure relief pipe (4); a mounting rod (502) is arranged inside the annular stopper (501); a supporting rod (503) fixedly connected to the annular stopper (501) is arranged at the bottom end of the mounting rod (502); a plurality of pressure relief plates (504) are sleeved on the outer surface of the mounting rod (502); and the inner ring diameter of the annular stopper (501) is much larger than the diameter of the mounting rod (502).

3. A composite sandwich high temperature cooking bag according to claim 2, characterized in that: The pressure relief plate (504) is bowl-shaped, with its outer arc surface facing the interior of the bearing cavity (3). The pressure relief plate (504) is made of heat-resistant silicone material, and the edge of the outer arc surface of the pressure relief plate (504) fits the inner wall of the pressure relief pipe (4).

4. A composite sandwich high temperature cooking bag according to claim 3, characterized in that: The first composite film (1) is composed of a polyester film (101), a first aluminum foil layer (102), a second aluminum foil layer (103) and a polyolefin film (104) in sequence, and the first composite film (1) and the second composite film (2) are connected to each other at one side where the polyolefin film (104) is provided.

5. The composite sandwich high temperature cooking bag according to claim 4, characterized in that: An interlayer cavity (105) exists between the first aluminum foil layer (102) and the second aluminum foil layer (103), and the shunt pipe (6) is in communication with the interlayer cavity (105).

6. The composite sandwich high temperature cooking bag according to claim 5, characterized in that: The suspension structure (7) comprises an air-filled tube (701) connected to the side of the first composite membrane (1), and the side wall of the air-filled tube (701) is provided with a conduit (702) interconnected with the interlayer cavity (105).

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