Aluminum oxide high-barrier packaging bag

Abstract

The utility model relates to the field of packaging bags, and discloses an aluminum oxide high-barrier packaging bag which comprises a bag body, a bag opening is fixedly connected to the top end of the bag body, the bag body comprises a middle layer and an inner layer, the middle layer is fixedly connected to the outer wall of the inner layer, and the middle layer comprises an aluminum oxide coating, an aluminized polyester film layer and a vinyl alcohol copolymer layer. The middle layer is fixedly connected to the outer wall of the vinyl alcohol copolymer layer, the aluminized polyester film layer is fixedly connected to the outer wall of the vinyl alcohol copolymer layer, the aluminum oxide coating is fixedly connected to the outer wall of the aluminized polyester film layer, the bag body further comprises a heat preservation layer, the heat preservation layer is fixedly connected to the outer wall of the middle layer, the bag body further comprises an outer layer, and the outer layer is fixedly connected to the outer wall of the heat preservation layer. According to the packaging bag, the aluminum oxide coating, the aluminized polyester film layer and the vinyl alcohol copolymer layer are combined to form the middle layer of the bag body, so that external oxygen and water vapor can be effectively blocked, articles in the packaging bag are prevented from being easily affected with damp, deteriorated or oxidized, and the protection performance is improved.

Description

Technical Field

[0001] The utility model relates to the field of packaging bags, in particular to an alumina high-barrier packaging bag. Background Art

[0002] A packaging bag is a container used for packaging and protecting items, and it has a wide range of applications in our daily life and various industries. By packaging items, it can ensure that the items still maintain excellent performance during transportation and storage. In view of slowing down the chemical changes and microbial growth of products, it is essential to improve the barrier performance of the packaging bag.

[0003] In the prior art, some packaging bags have certain limitations in terms of barrier performance and cannot effectively block the penetration of oxygen, water vapor, etc., resulting in the items inside the package being prone to moisture, deterioration or oxidation. In order to improve the barrier performance of the packaging bag and meet the packaging requirements for certain special items, such as electronic components, food, drugs, etc. that are sensitive to humidity and oxygen, it is necessary to develop a new type of high-barrier packaging bag. Therefore, an alumina high-barrier packaging bag is proposed to solve the above problems. Summary of the Utility Model

[0004] To make up for the above deficiencies, the utility model provides an alumina high-barrier packaging bag, aiming to improve the problem of too low barrier performance of some packaging bags in the prior art.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: an alumina high-barrier packaging bag, including a bag body, a bag mouth is fixedly connected to the top of the bag body, and the bag body includes an intermediate layer and an inner layer, and the intermediate layer is fixedly connected to the outer wall of the inner layer.

[0006] As a further description of the above technical scheme:

[0007] The intermediate layer includes an alumina coating, an aluminized polyester film layer, and a vinyl alcohol copolymer layer. The aluminized polyester film layer is fixedly connected to the outer wall of the vinyl alcohol copolymer layer, and the alumina coating is fixedly connected to the outer wall of the aluminized polyester film layer.

[0008] As a further description of the above technical scheme:

[0009] The bag body further includes a heat-insulating layer, and the heat-insulating layer is fixedly connected to the outer wall of the intermediate layer.

[0010] As a further description of the above technical scheme:

[0011] The bag body further includes an outer layer, and the outer layer is fixedly connected to the outer wall of the heat-insulating layer.

[0012] As a further description of the above technical scheme:

[0013] The outer layer includes a nylon layer.

[0014] As a further description of the above technical solution:

[0015] The heat insulation layer includes an aerogel layer.

[0016] As a further description of the above technical solution:

[0017] The inner layer includes a polyethylene layer.

[0018] The utility model has the following beneficial effects:

[0019] 1. In the utility model, the intermediate layer of the bag body is composed of the arranged alumina coating, aluminized polyester film layer, and ethylene vinyl alcohol copolymer layer, which can effectively block external oxygen and water vapor, prevent the items in the packaging bag from being easily affected with damp, deteriorated or oxidized, and improve the protection performance.

[0020] 2. In the utility model, the arranged outer layer adopts high-strength nylon, which improves the wear resistance and tensile resistance of the packaging bag. At the same time, through the arranged heat insulation layer, when the external environmental temperature changes greatly, the heat transfer can be slowed down, the influence of the high external temperature on the barrier layer can be reduced, and thus the temperature inside the packaging bag can be better maintained stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the three-dimensional structure of the overall device in the utility model;

[0022] Figure 2 is a schematic sectional view of the three-dimensional structure of the bag body in the utility model;

[0023] Figure 3 is a schematic sectional view of the three-dimensional structure of the intermediate layer in the utility model.

[0024] LEGEND DESCRIPTION:

[0025] 1. Bag body; 2. Bag mouth; 11. Outer layer; 12. Heat insulation layer; 13. Intermediate layer; 14. Inner layer; 131. Alumina coating; 132. Aluminized polyester film layer; 133. Ethylene vinyl alcohol copolymer layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the utility model without making creative efforts shall fall within the protection scope of the utility model.

[0027] Refer toFigure 1 - Figure 2 , an embodiment provided by the present utility model: an alumina high-barrier packaging bag, including a bag body 1, a bag mouth 2 is fixedly connected to the top of the bag body 1. The bag body 1 and the bag mouth 2 are prior arts, which can allow items to pass through the bag mouth 2 and be placed inside the bag body 1 for storage. And a sealing structure is provided on the bag mouth 2 to ensure the sealing performance of the packaging bag, and those skilled in the art can achieve it. Since it is a prior art, it will not be described in detail in this case. The bag body 1 includes an intermediate layer 13 and an inner layer 14. The intermediate layer 13 is fixedly connected to the outer wall of the inner layer 14. The inner layer 14 includes a polyethylene layer, and the polyethylene layer is a food-grade polyethylene material, which has good heat-sealing performance and chemical stability.

[0028] Refer to Figure 2 - Figure 3 , the intermediate layer 13 includes an alumina coating 131, an aluminized polyester film layer 132, and a ethylene vinyl alcohol copolymer layer 133. The ethylene vinyl alcohol copolymer layer 133 is set as EVOH (ethylene-vinyl alcohol copolymer), which has excellent gas barrier performance. The aluminized polyester film layer 132 is fixedly connected to the outer wall of the ethylene vinyl alcohol copolymer layer 133. The aluminized polyester film layer 132 is a film made of aluminized polyester material, which has good barrier effects on oxygen, water vapor and light, can effectively protect the quality and performance of the items inside the package, and can further enhance the barrier effect of the packaging bag. The alumina coating 131 is fixedly connected to the outer wall of the aluminized polyester film layer 132. The alumina coating 131 is evenly covered by a special plasma spraying process, and the thickness is precisely controlled within microns, which can effectively block oxygen and water vapor.

[0029] Refer to Figure 1 - Figure 2 , the bag body 1 further includes a heat-insulating layer 12, and the heat-insulating layer 12 is fixedly connected to the outer wall of the intermediate layer 13. The heat-insulating layer 12 includes an aerogel layer, and the aerogel layer is made of aerogel material, which has an extremely low thermal conductivity and is an excellent heat-insulating material. It is light in weight, has strong compressive capacity, and also has good fire-proof performance.

[0030] Refer to Figure 1 - Figure 2 , the bag body 1 further includes an outer layer 11, and the outer layer 11 is fixedly connected to the outer wall of the heat-insulating layer 12. The outer layer 11 includes a nylon layer, and the nylon layer is set as a high-strength nylon material, which has excellent wear resistance and tensile resistance.

[0031] Working principle: When packaging items, the items can be placed inside the bag body 1 through the bag mouth 2. First, the inner layer 14 of the bag body 1 uses a food-grade polyethylene material, and its good heat-sealing performance and chemical stability ensure the safety and sealing performance of the items in contact with the inner layer 14.

[0032] The intermediate layer 13 plays a crucial barrier role. Among them, the alumina coating 131 is evenly coated on the aluminized polyester film layer 132 through a special plasma spraying process, which can effectively block the intrusion of oxygen and water vapor. The aluminized polyester film layer 132 itself has a good barrier effect on oxygen, water vapor and light, further enhancing the barrier ability of the packaging bag. The ethylene vinyl alcohol copolymer layer 133, with its excellent gas barrier performance, further improves the overall barrier effect, jointly protecting the quality and performance of the items inside the package and preventing them from getting damp, oxidized or deteriorated.

[0033] The thermal insulation layer 12 located outside the intermediate layer 13 is made of aerogel material. Due to its extremely low thermal conductivity, it can effectively slow down the heat transfer when the external temperature changes greatly, keeping the temperature of the items inside the bag relatively stable. It can provide good thermal insulation for the items in both high-temperature and low-temperature environments.

[0034] The outermost outer layer 11 is made of high-strength nylon material. Its excellent wear resistance and tensile resistance enable it to withstand external frictional, pulling and other forces, providing a strong protection for the entire packaging bag and protecting the internal layer structures from damage.

[0035] In summary, through the synergistic effect of each layer structure, this alumina high-barrier packaging bag realizes high-barrier protection, thermal insulation and external protection for the items inside the package, meeting the high-quality packaging requirements for different items.

[0036] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Aluminum oxide high-barrier packaging bag, including a bag body (1), characterized in that: The top of the bag body (1) is fixedly connected with a bag mouth (2). The bag body (1) includes an intermediate layer (13) and an inner layer (14), and the intermediate layer (13) is fixedly connected to the outer wall of the inner layer (14). The intermediate layer (13) includes an alumina coating (131), an aluminized polyester film layer (132), and a vinyl alcohol copolymer layer (133). The aluminized polyester film layer (132) is fixedly connected to the outer wall of the vinyl alcohol copolymer layer (133), and the alumina coating (131) is fixedly connected to the outer wall of the aluminized polyester film layer (132).

2. The aluminum oxide high-barrier packaging bag according to claim 1, characterized in that: The bag body (1) further includes a heat insulation layer (12), and the heat insulation layer (12) is fixedly connected to the outer wall of the intermediate layer (13).

3. The alumina high-barrier packaging bag according to claim 2, wherein: The bag body (1) further includes an outer layer (11), and the outer layer (11) is fixedly connected to the outer wall of the heat insulation layer (12).

4. The high-barrier packaging bag made of alumina according to claim 3, wherein: The outer layer (11) includes a nylon layer.

5. The aluminum oxide high-barrier packaging bag according to claim 2, characterized in that: The heat insulation layer (12) includes an aerogel layer.

6. The aluminum oxide high-barrier packaging bag according to claim 1, wherein: The inner layer (14) includes a polyethylene layer.

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