Cooking-resistant food packaging bag

Abstract

The utility model discloses a cooking-resistant food packaging bag which comprises a bag body (2) with an opening in the top. Hot-pressing sealing edges (3) are arranged on the two side edges and the bottom edge of the bag body (2); a first sealing zipper (5), a second sealing zipper (6) and a third sealing zipper (7) which are sequentially and uniformly distributed at intervals from top to bottom are arranged at the top of the bag body (2); a pressure-sensitive adhesive layer (8) is arranged on the outer side surface of one side of the bag body (2) and corresponds to the part between the second sealing zipper (6) and the third sealing zipper (7); and the top of the bag body (2) can be adhered to the pressure-sensitive adhesive layer (8) after being folded over the second sealing zipper (6), so that the top of the bag body (2) is folded and sealed. According to the utility model, not only can the sealing performance during cooking be improved, but also the cooking pot has the advantages of convenience in use and higher safety.

Description

Technical Field

[0001] The utility model relates to the field of packaging bags, in particular to a cooking-resistant food packaging bag. Background Art

[0002] At present, in order to preserve food for a long time and retain the flavor of the food, users generally use food packaging bags to seal the food and then refrigerate it; however, the bacteria remaining in the food itself will still breed, so it is necessary to steam and sterilize the sealed packaging bags before refrigeration.

[0003] The traditional retort-resistant packaging bag is similar to the retort-resistant wrinkle-resistant packaging bag disclosed in ZL201520827122.8, which has a sealing zipper connected to the top opening to facilitate the food taking and placing operation, and its main body is composed of a multi-layer film composite with good strength. However, some foods are prone to produce gas inside the packaging bag during the cooking process, which increases the air pressure inside the packaging bag, causing the sealing zipper to be stretched open, resulting in air leakage in the packaging bag.

[0004] Therefore, the existing retort-resistant food packaging bags have the problem of poor sealing performance during retort. Utility Model Content

[0005] The purpose of the utility model is to provide a retort-resistant food packaging bag, which has the advantage of good sealing performance during retort.

[0006] The technical solution of the utility model is as follows: a cooking-resistant food packaging bag comprises a bag body with an opening at the top; both side edges and the bottom edge of the bag body are provided with heat-pressed edge sealing; the top of the bag body is provided with a first sealing zipper, a second sealing zipper and a third sealing zipper which are evenly distributed in sequence from top to bottom, and a pressure-sensitive adhesive layer is provided on the outer side surface of one side of the bag body at a position corresponding to between the second sealing zipper and the third sealing zipper; the top of the bag body can be adhered to the pressure-sensitive adhesive layer after being folded in half at a position above the second sealing zipper, so as to realize the folded sealing of the top of the bag body.

[0007] In the aforementioned retort-resistant food packaging bag, the bag body is composed of a polyester film layer, an aluminum foil layer and a polyethylene film layer in sequence from the outside to the inside.

[0008] In the aforementioned retort-resistant food packaging bag, the edges of the heat-pressed edge seals are all provided with hot-melt edge seals.

[0009] In the aforementioned retort-resistant food packaging bag, the pressure-sensitive adhesive layer is arranged in a horizontal discontinuous line shape.

[0010] In the aforementioned retort-resistant food packaging bag, the width of the pressure-sensitive adhesive layer is 8 to 12 mm.

[0011] In the aforementioned retort-resistant food packaging bag, the width of the hot-pressed edge seal is 10 to 16 mm.

[0012] In the aforementioned retort-resistant food packaging bag, a tear-off head protruding upward is provided on one side of the top end of the bag body.

[0013] In the aforementioned retort-resistant food packaging bag, the tear head is semicircular.

[0014] Compared with the prior art, the utility model improves the sealing performance of the two side edges and the bottom edge of the bag body by heat-pressing and sealing the edge; and provides a first sealing zipper, a second sealing zipper and a third sealing zipper which are spaced from top to bottom in sequence at the top opening of the bag body, thereby greatly improving the sealing effect of the opening; and enables the top of the bag body to be folded and bonded to the pressure-sensitive adhesive layer for fixation, thereby further improving the sealing performance of the opening; during cooking, after the internal air pressure increases and breaks through the third sealing zipper of the bottom layer, the interval between the second sealing zipper and the third sealing zipper can accommodate part of the gas, thereby reducing the internal air pressure and avoiding the problem of the bag body bursting due to excessive internal air pressure.

[0015] In addition, the film constituting the bag body of the utility model is composited by a polyester film layer, an aluminum foil layer and a polyethylene film layer arranged in sequence from the outside to the inside, and the overall strength is high; even if it is used to package bone-in food, it is not easy to be punctured and damaged. The edges of the hot-pressed edge sealing are all provided with hot-melt edge sealing to prevent the composite layer from separating during the cooking process and improve the sealing performance.

[0016] The pressure-sensitive adhesive layer is arranged in a horizontal discontinuous line shape, and the width of the pressure-sensitive adhesive layer is 8 to 12 mm, so that after the top of the bag is folded and bonded, the top of the bag can still form a stable folded seal; and there is no bonding at the discontinuous part of the pressure-sensitive adhesive layer, which saves effort when tearing the folded part. The width of the hot press edge sealing is 10 to 16 mm, and the sealing of this part is better; the tear head protruding upward on one side of the top of the bag body can facilitate the user to tear the folded part; the tear head is semicircular, not easy to scratch the user, and has high safety.

[0017] Therefore, the utility model can not only improve the sealing performance during cooking, but also has the advantages of being easy to use and having high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the bag.

[0020] The markings in the accompanying drawings are: 2-bag body, 3-hot pressing edge sealing, 4-hot melting edge sealing, 5-first sealing zipper, 6-second sealing zipper, 7-third sealing zipper, 8-pressure-sensitive adhesive layer, 9-polyester film layer, 10-aluminum foil layer, 11-polyethylene film layer, 12-tear pull head. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0022] Embodiment. A retort-resistant food packaging bag, comprising: Figure 1 and 2 As shown, it includes a bag body 2 with an opening at the top; both side edges and the bottom edge of the bag body 2 are provided with hot-pressed edge sealing 3; the top of the bag body 2 is provided with a first sealing zipper 5, a second sealing zipper 6 and a third sealing zipper 7 which are evenly spaced from top to bottom, and a pressure-sensitive adhesive layer 8 is provided on the outer surface of one side of the bag body 2 at a position corresponding to between the second sealing zipper 6 and the third sealing zipper 7; the top of the bag body 2 can be folded in half at a position above the second sealing zipper 6 and can be adhered to the pressure-sensitive adhesive layer 8, so that the top of the bag body 2 is folded in half and sealed.

[0023] The bag body 2 is composed of a polyester film layer 9, an aluminum foil layer 10 and a polyethylene film layer 11 from the outside to the inside; hot-melt sealing 4 is provided at the edges of the hot-pressing edge sealing 3; the pressure-sensitive adhesive layer 8 is arranged in a horizontal discontinuous line shape; the width of the pressure-sensitive adhesive layer 8 is 8 to 12 mm; the width of the hot-pressing edge sealing 3 is 10 to 16 mm; a tearing head 12 protruding upward is provided on one side of the top of the bag body 2; the tearing head 12 is semicircular.

[0024] Working principle: after putting food into the bag from the opening, exhaust the internal air as much as possible, and then close the third sealing zipper 7, the second sealing zipper 6 and the first sealing zipper 5 in sequence; then, fold the top of the bag 2, and press the folded part on the pressure-sensitive adhesive layer 8 to achieve bonding and fixing; then, steam and sterilize the food together with the bag 2, and kill the bacteria on the food by high temperature, thereby extending the shelf life of the food; during steaming, when the air pressure inside the bag 2 increases and breaks through the third sealing zipper 7, the interval between the second sealing zipper 6 and the third sealing zipper 7 can accommodate part of the gas, and under the condition of ensuring the sealing is intact, the bag 2 is prevented from bursting due to excessive air pressure; finally, after the food and the bag 2 are cooled, they can be refrigerated.

[0025] When food is needed, the food and the bag body 2 can be steamed and heated together and then the food can be taken out of the bag body 2, or the food can be taken out of the bag body 2 and then steamed and heated. When taking out the food, it is only necessary to tear the folded portion at the top of the bag body 2 off the pressure-sensitive adhesive layer 8 through the tearing head 12, then open the first sealing zipper 5, the second sealing zipper 6 and the third sealing zipper 7, and finally take out the food from the bag body 2 through the opening.

[0026] The film constituting the bag body 2 is composed of a polyester film layer 9, an aluminum foil layer 10 and a polyethylene film layer 11 arranged in sequence from the outside to the inside, and has a high overall strength; even if it is used to package bone-in food, it is not easy to be punctured and damaged. The width of the hot-pressed edge seal is 10 to 16 mm, and the sealing is good; the hot-melt edge seal 4 at the edge of the hot-pressed edge seal 3 can prevent the composite layer from separating during the cooking process, thereby improving the sealing. The pressure-sensitive adhesive layer 8 is arranged in a horizontal discontinuous line, and the width of the pressure-sensitive adhesive layer 8 is 8 to 12 mm, so that after the top of the bag body 2 is folded and bonded, the top of the bag body 2 can still form a stable folded seal; and there is no bonding at the intermittent part of the pressure-sensitive adhesive layer 8, so it is more labor-saving to tear open the folded part. The tear head 12 is semicircular, and the bag body 2 is not easy to scratch the user when taking it, and it is safer.

Claims

1. A retort-resistant food packaging bag, comprising a bag body (2) with an opening at the top; characterized in that: Both side edges and the bottom edge of the bag body (2) are provided with hot-pressed edge sealing (3); the top of the bag body (2) is provided with a first sealing zipper (5), a second sealing zipper (6) and a third sealing zipper (7) which are evenly spaced from top to bottom; a pressure-sensitive adhesive layer (8) is provided on the outer surface of one side of the bag body (2) at a position corresponding to between the second sealing zipper (6) and the third sealing zipper (7); the top of the bag body (2) can be folded in half at a position above the second sealing zipper (6) and can be adhered to the pressure-sensitive adhesive layer (8), thereby achieving the folded and sealed top of the bag body (2).

2. The retort-resistant food packaging bag according to claim 1, characterized in that: The bag body (2) is composed of a polyester film layer (9), an aluminum foil layer (10) and a polyethylene film layer (11) in sequence from the outside to the inside.

3. The retort-resistant food packaging bag according to claim 2, characterized in that: The edges of the hot-pressed edge seal (3) are all provided with hot-melt edge seal (4).

4. The retort-resistant food packaging bag according to claim 1, characterized in that: The pressure-sensitive adhesive layer (8) is arranged in a horizontal discontinuous line shape.

5. The retort-resistant food packaging bag according to claim 4, characterized in that: The width of the pressure-sensitive adhesive layer (8) is 8 to 12 mm.

6. The retort-resistant food packaging bag according to claim 1, characterized in that: The width of the hot pressing edge sealing (3) is 10 to 16 mm.

7. The retort-resistant food packaging bag according to claim 1, characterized in that: A tearing head (12) protruding upward is provided on one side of the top end of the bag body (2).

8. The retort-resistant food packaging bag according to claim 7, characterized in that: The tearing head (12) is semicircular.

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