Anti-curling soft package lithium battery aluminum plastic film

Abstract

The utility model discloses an anti-curl soft package lithium battery aluminum plastic film which comprises a protective layer, a middle layer and a heat sealing layer which are arranged in sequence, the surface of the protective layer is bonded with a first anti-curl layer through a first composite glue layer, the surface of the first anti-curl layer is bonded with a plasticizing layer through a second composite glue layer, and the heat sealing layer is bonded with a second anti-curl layer through a second composite glue layer. And the surface of the plasticizing layer is bonded with a second anti-curling layer through a third composite glue layer. According to the anti-curl soft package lithium battery aluminum plastic film provided by the utility model, the first anti-curl layer and the second anti-curl layer which are made of poly (4-methylpentene) are arranged on the surface of the protective layer, so that the internal stress of the protective layer is increased, and the plasticizing layer is arranged between the first anti-curl layer and the second anti-curl layer, so that the anti-curl soft package lithium battery aluminum plastic film has a good anti-curl effect. The first anti-curl layer and the second anti-curl layer become soft, the fitness is better after the first anti-curl layer and the second anti-curl layer are attached, the phenomenon that the first anti-curl layer and the second anti-curl layer curl towards the protective layer is prevented, the production efficiency of an enterprise is improved, and the production cost of the enterprise is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum-plastic films, in particular to an anti-curling soft-pack lithium battery aluminum-plastic film. Background Art

[0002] At present, lithium-ion battery technology is becoming more and more mature. Soft-package aluminum-plastic film is widely used in 3C electronic products, power batteries, energy storage and other fields due to its advantages such as light weight and safety. The existing soft-package aluminum-plastic film includes nylon layer, aluminum foil layer and heat sealing layer from top to bottom. During the use of customers, the soft-package aluminum-plastic film will curl toward the nylon surface. In serious cases, a flattening process needs to be added, which reduces the production efficiency of the enterprise and increases the production cost of the enterprise.

[0003] Based on the above situation, the utility model proposes an anti-curling soft-pack lithium battery aluminum-plastic film, which can effectively solve the above problems. Utility Model Content

[0004] The utility model aims to provide an anti-curling soft-pack lithium battery aluminum-plastic film. The utility model provides an anti-curling soft-pack lithium battery aluminum-plastic film, which increases the internal stress of the protective layer by arranging a first anti-curling layer and a second anti-curling layer made of poly-4-methylpentene on the surface of the protective layer, and softens the first anti-curling layer and the second anti-curling layer by arranging a plasticizing layer between the first anti-curling layer and the second anti-curling layer, so that the first anti-curling layer and the second anti-curling layer are better conformable after lamination, and the phenomenon of curling toward the protective layer is prevented, thereby improving the production efficiency of the enterprise and reducing the production cost of the enterprise.

[0005] The utility model is realized by the following technical solutions:

[0006] An anti-curling soft-pack lithium battery aluminum-plastic film comprises a protective layer, an intermediate layer and a heat-sealing layer arranged in sequence, wherein a first anti-curling layer is bonded to a surface of the protective layer via a first composite glue layer, a plasticizing layer is bonded to a surface of the first anti-curling layer via a second composite glue layer, and a second anti-curling layer is bonded to a surface of the plasticizing layer via a third composite glue layer.

[0007] According to the above technical solution, as a further preferred technical solution of the above technical solution, the materials of the first anti-curling layer and the second anti-curling layer are both poly-4-methylpentene.

[0008] According to the above technical solution, as a further preferred technical solution of the above technical solution, the material of the plasticizing layer is small molecule amide or alcohol amine.

[0009] According to the above technical solution, as a further preferred technical solution of the above technical solution, the first composite glue layer, the second composite glue layer and the third composite glue layer are all acrylic adhesives.

[0010] According to the above technical solution, as a further preferred technical solution of the above technical solution, the material of the protective layer is polyamide.

[0011] According to the above technical solution, as a further preferred technical solution of the above technical solution, the material of the heat sealing layer is cast polypropylene.

[0012] According to the above technical solution, as a further preferred technical solution of the above technical solution, the material of the middle layer is aluminum foil.

[0013] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0014] The utility model provides an anti-curling soft-pack lithium battery aluminum-plastic film, which increases the internal stress of the protective layer by arranging a first anti-curling layer and a second anti-curling layer made of poly 4-methylpentene on the surface of the protective layer, and softens the first anti-curling layer and the second anti-curling layer by arranging a plasticizing layer between the first anti-curling layer and the second anti-curling layer, and has better conformity after being bonded, thereby preventing the phenomenon of curling toward the protective layer, thereby improving the production efficiency of the enterprise and reducing the production cost of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solution of the utility model, the preferred implementation scheme of the utility model is described below in conjunction with specific embodiments. However, it should be understood that the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationship described in the drawings is only used for illustrative purposes and cannot be understood as a limitation on this patent.

[0017] A curl-proof soft-pack lithium battery aluminum-plastic film comprises a protective layer 1, an intermediate layer 2 and a heat-sealing layer 3 arranged in sequence, wherein a first anti-curling layer 5 is bonded to a surface of the protective layer 1 via a first composite glue layer 4, a plasticizing layer 7 is bonded to a surface of the first anti-curling layer 5 via a second composite glue layer 6, and a second anti-curling layer 9 is bonded to a surface of the plasticizing layer 7 via a third composite glue layer 8.

[0018] The utility model arranges a first anti-curling layer 5 and a second anti-curling layer 9 made of poly 4-methylpentene on the surface of the protective layer 1, thereby increasing the internal stress of the protective layer, and arranges a plasticizing layer 7 between the first anti-curling layer 5 and the second anti-curling layer 9, so that the first anti-curling layer 5 and the second anti-curling layer 9 are softened, and the conformity after lamination is better, and the phenomenon of curling toward the protective layer 1 is prevented, thereby improving the production efficiency of the enterprise and reducing the production cost of the enterprise.

[0019] Furthermore, in another embodiment, the material of the plasticizing layer 7 is small molecule amide or alcohol amine.

[0020] Furthermore, in another embodiment, the first composite glue layer 4, the second composite glue layer 6 and the third composite glue layer 8 are all acrylic adhesives.

[0021] Furthermore, in another embodiment, the material of the protective layer 1 is polyamide.

[0022] Furthermore, in another embodiment, the material of the heat sealing layer 3 is cast polypropylene.

[0023] Furthermore, in another embodiment, the material of the intermediate layer 2 is aluminum foil.

[0024] According to the description and drawings of the utility model, those skilled in the art can easily manufacture or use the anti-curling soft-pack lithium battery aluminum-plastic film of the utility model, and can produce the positive effects recorded in the utility model.

[0025] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationships are based on the orientation or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in conjunction with the drawings and according to specific circumstances.

[0026] Unless otherwise specified and limited, in the present invention, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. An anti-curling soft-pack lithium battery aluminum-plastic film, characterized in that: The invention comprises a protective layer (1), an intermediate layer (2) and a heat-sealing layer (3) which are arranged in sequence, wherein the surface of the protective layer (1) is bonded to a first anti-curling layer (5) via a first composite glue layer (4), the surface of the first anti-curling layer (5) is bonded to a plasticizing layer (7) via a second composite glue layer (6), and the surface of the plasticizing layer (7) is bonded to a second anti-curling layer (9) via a third composite glue layer (8).

2. The anti-curling soft-pack lithium battery aluminum-plastic film according to claim 1, characterized in that: The materials of the first anti-curling layer (5) and the second anti-curling layer (9) are both poly-4-methylpentene.

3. The anti-curling soft-pack lithium battery aluminum-plastic film according to claim 1, characterized in that: The material of the plasticizing layer (7) is small molecule amide or alcohol amine.

4. The anti-curling soft-pack lithium battery aluminum-plastic film according to claim 1, characterized in that: The first composite glue layer (4), the second composite glue layer (6) and the third composite glue layer (8) are all made of acrylic ester adhesive.

5. The anti-curling soft-pack lithium battery aluminum-plastic film according to claim 1, characterized in that: The material of the protective layer (1) is polyamide.

6. The anti-curling soft-pack lithium battery aluminum-plastic film according to claim 1, characterized in that: The material of the heat sealing layer (3) is cast polypropylene.

7. The anti-curling soft-pack lithium battery aluminum-plastic film according to claim 1, characterized in that: The material of the middle layer (2) is aluminum foil.

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