A button battery protective film that is easy to mount

Abstract

The present invention discloses a button battery protective film that is easy to mount, wherein a matte black polyester film layer, a first 3M adhesive layer, and a PET release film layer are provided with W-shaped grooves, and the sizes of the matte black polyester film layer, the first 3M adhesive layer, the black polyester film layer, the second 3M adhesive layer, and the self-adhesive layer are not larger than the size of the PET release film layer, and the size of the self-adhesive layer is not larger than the size of the second 3M adhesive layer. The button battery protective film that is easy to mount provided by the present invention, wherein the matte black polyester film layer, the 3M adhesive layer, the black polyester film layer, and the self-adhesive layer are bonded together by two layers of 3M adhesive layers and the self-adhesive layer, and after the PET release film layer is quickly torn off, the button battery protective film can be efficiently mounted on the button battery by two layers of 3M adhesive layers, and the protective film has good light-shielding properties, electrical insulation properties, heat resistance, waterproof properties, etc., good bonding properties, good adhesion, and good protective effects on button batteries, and the overall structure is simple and beautiful.

Description

Technical Field

[0001] The invention belongs to the technical field of button battery protection films, and in particular relates to a button battery protection film which is easy to mount. Background Art

[0002] Button battery protective film can protect the battery core and prevent it from being scratched or punctured by external forces, which may cause the battery to leak and cause fire, thereby ensuring the stability and safety of use. However, the functionality of existing button battery protective films needs to be improved, and the mounting process is not convenient and the use is not convenient. Summary of the invention

[0003] In order to solve the problems in the prior art, the object of the present invention is to provide a button battery protective film that is easy to mount.

[0004] In order to achieve the above purpose and the above technical effect, the technical solution adopted by the present invention is:

[0005] A button battery protective film that is easy to mount, comprising a matte black polyester film layer, a first 3M adhesive layer, a black polyester film layer, a second 3M adhesive layer, a self-adhesive layer and a PET release film layer, which are arranged in sequence from top to bottom and matched with each other, wherein the matte black polyester film layer, the first 3M adhesive layer and the PET release film layer are all provided with W-shaped grooves at matching positions, and the sizes of the matte black polyester film layer, the first 3M adhesive layer, the black polyester film layer, the second 3M adhesive layer and the self-adhesive layer are not larger than the size of the PET release film layer, and the size of the self-adhesive layer is smaller than the size of the first 3M adhesive layer and the second 3M adhesive layer.

[0006] Furthermore, the matte black polyester film layer and the first 3M adhesive layer have the same structure and size, the black polyester film layer and the second 3M adhesive layer have the same structure and size, the size of the matte black polyester film layer and the first 3M adhesive layer is not smaller than the size of the black polyester film layer and the second 3M adhesive layer, and the size of the black polyester film layer and the second 3M adhesive layer is larger than the size of the self-adhesive.

[0007] Furthermore, the matte black polyester film layer, the first 3M adhesive layer and the PET release film layer are all provided with matching W-shaped grooves at the same position on the top.

[0008] Furthermore, the W-shaped groove includes a first protrusion, a second protrusion and a horizontal protrusion connecting the first protrusion and the second protrusion, and the first protrusion and the horizontal protrusion, and the horizontal protrusion and the second protrusion are connected respectively by arc grooves.

[0009] Furthermore, the matte black polyester film layer has a thickness of 50-188 μm.

[0010] Furthermore, the thickness of the first 3M adhesive layer and the second 3M adhesive layer are 0.06-0.13 mm respectively.

[0011] Furthermore, the thickness of the black polyester film layer is 50-300 μm.

[0012] Furthermore, the thickness of the self-adhesive is 0.3 mm.

[0013] Furthermore, the thickness of the PET release film layer is 70-80 μm.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The invention discloses a button battery protective film which is easy to mount. The protective film comprises a matte black polyester film layer, a first 3M adhesive layer, a black polyester film layer, a second 3M adhesive layer, a self-adhesive layer and a PET release film layer which are sequentially arranged and matched from top to bottom. The matte black polyester film layer, the first 3M adhesive layer and the PET release film layer are respectively provided with matched W-shaped grooves. The sizes of the matte black polyester film layer, the first 3M adhesive layer, the black polyester film layer, the second 3M adhesive layer and the self-adhesive layer are not larger than the size of the PET release film layer, and the size of the self-adhesive layer is not larger than the size of the second 3M adhesive layer. The button battery protective film which is easy to mount provided by the present invention adheres a matte black polyester film layer, a 3M adhesive layer, a black polyester film layer and the self-adhesive together through two layers of 3M adhesive layers and the self-adhesive. The size of the self-adhesive is the smallest. After the PET release film layer is quickly torn off, the first 3M adhesive layer and the second 3M adhesive layer can be leaked out, and the button battery protective film can be quickly and efficiently mounted on the button battery through the two layers of 3M adhesive layers. The button battery protective film has the advantages of good light shielding, electrical insulation, heat resistance, waterproofness, good mechanical properties, etc., has good bonding performance and good adhesion, plays a good protective role on the button battery, improves the service life, stability and safety of use, has a simple overall structure, is beautiful and elegant, and is suitable for large-scale industrial applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0017] The embodiments of the present invention are described in detail below so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0018] like Figure 1As shown, a button battery protective film that is easy to mount includes a matte black polyester film layer 1, a first 3M adhesive layer 2, a black polyester film layer 3, a second 3M adhesive layer 4, a self-adhesive layer 5 and a PET release film layer 6, which are arranged in sequence from top to bottom and matched with each other. The matte black polyester film layer 1, the first 3M adhesive layer 2 and the PET release film layer 6 are all provided with matching W-shaped grooves at the same matching positions on the same side of the top. The sizes of the matte black polyester film layer 1, the first 3M adhesive layer 2, the black polyester film layer 3, the second 3M adhesive layer 4 and the self-adhesive layer 5 are not larger than the sizes of the PET release film layer 6, and the sizes of the self-adhesive layer 5 are not larger than the sizes of the first 3M adhesive layer 2 and the second 3M adhesive layer 4. The matte black polyester film layer 1, the first 3M adhesive layer 2, the black polyester film layer 3, the second 3M adhesive layer 4 and the self-adhesive layer 5 are bonded together by the first 3M adhesive layer 2, the second 3M adhesive layer 4 and the self-adhesive layer 5.

[0019] As a specific embodiment, the matte black polyester film layer 1 and the first 3M adhesive layer 2 have the same structure and size, the black polyester film layer 3 and the second 3M adhesive layer 4 have the same structure and size, the size of the matte black polyester film layer 1 and the first 3M adhesive layer 2 is not smaller than the size of the black polyester film layer 3 and the second 3M adhesive layer 4, and the size of the black polyester film layer 3 and the second 3M adhesive layer 4 is larger than the size of the self-adhesive 5.

[0020] As a more specific embodiment, the matte black polyester film layer 1 and the first 3M adhesive layer 2 have the same structure and size, the black polyester film layer 3 and the second 3M adhesive layer 4 have the same structure and size, the size of the matte black polyester film layer 1 and the first 3M adhesive layer 2 is larger than the size of the black polyester film layer 3 and the second 3M adhesive layer 4, and the size of the black polyester film layer 3 and the second 3M adhesive layer 4 is larger than the size of the self-adhesive 5.

[0021] The structure, shape, size, etc. of the self-adhesive 5 are all compatible with the button battery. The self-adhesive 5 is bonded to the second 3M adhesive layer 4, and the side of the self-adhesive 5 facing the PET release film layer 6 is not sticky. After the PET release film layer 6 is quickly torn off, since the size of the self-adhesive 5 is the smallest, the self-adhesive 5 is compatible with the button battery, and the second 3M adhesive layer 4 that is not completely covered by the self-adhesive 5 is exposed, and the first 3M adhesive layer 2 that is not completely covered by the black polyester film layer 3 and the second 3M adhesive layer 4 is exposed. The better adhesion of the first 3M adhesive layer 2 and the second 3M adhesive layer 4 can be used to bond the button battery and fully fit the button battery with the self-adhesive 5, thereby achieving the purpose of rapid mounting.

[0022] The W-shaped groove includes a first protrusion 7, a second protrusion 8 and a horizontal protrusion 9 connecting the first protrusion 7 and the second protrusion 8. The first protrusion 7 and the horizontal protrusion 9, and the horizontal protrusion 9 and the second protrusion 8 are connected respectively by an arc-shaped groove 10. The angle between the central axes of the first protrusion 7 and the second protrusion 8 can be flexibly designed according to actual needs, preferably an acute angle. The angle between the central axes of the first protrusion 7 and the second protrusion 8 is more preferably 30-60°. The bottom of the arc-shaped groove 10 is arc-shaped, so as to realize a smooth connection between the first protrusion 7, the second protrusion 8 and the horizontal protrusion 9.

[0023] The black polyester film layer 3 and the second 3M adhesive layer 4 are fully compatible with the structure, size, etc. of the matte black polyester film layer 1 and the first 3M adhesive layer 2. The black polyester film layer 3 and the second 3M adhesive layer 4 are both provided with a protrusion 11 that is compatible with a W-shaped groove. The protrusion 11 is fully compatible with the structure, size, etc. of the horizontal protrusion 9. When the matte black polyester film layer 1, the first 3M adhesive layer 2, the black polyester film layer 3 and the second 3M adhesive layer 4 are bonded together, the protrusion 11 and the horizontal protrusion 9 can be fully fitted.

[0024] The matte black polyester film layer 1 has a thickness of 50-188 μm, good black shading, a matte black and smooth surface, good thermal stability and mechanical properties; the tensile strength obtained by conventional ASTM D882 standard test is 180-200 MPa, and the elongation at break is 110%; the thermal shrinkage rate obtained by testing at 150°C and 30 min according to GB / T13541 standard is 1.0%; the light transmittance tested according to ASTM D1003 standard is ≦ 3 / (75 μm), and the haze is 4.5%.

[0025] The thickness of the first 3M adhesive layer 2 and the second 3M adhesive layer 4 are 0.06-0.13 mm respectively, and 3M 467, 3M 468 and other series of double-sided adhesives are used respectively, with good adhesion. The thickness of the first 3M adhesive layer 2 and the second 3M adhesive layer 4 made of 3M 467MP or 3M 467MPF series double-sided adhesive is 0.06 mm respectively, and the thickness of the first 3M adhesive layer 2 and the second 3M adhesive layer 4 made of 3M 468MP or 3M 468MPF series double-sided adhesive is 0.13 mm respectively.

[0026] The thickness of the black polyester film layer 3 is 50-300 μm, preferably 50 μm, 75 μm, 100 μm, 125 μm, 150 μm, 188 μm, 250 μm, 300 μm, and has good electrical insulation.

[0027] The thickness of the self-adhesive 5 is 0.3 mm.

[0028] The thickness of the PET release film layer 6 is 70-80 μm, the peeling force obtained by stretching at a speed of 300 mm / min and an angle of 180 degrees is 15±5 g, and the width is 1000±2 mm.

[0029] Parts not specifically described in the present invention may adopt existing technologies and will not be described in detail here.

[0030] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A button battery protective film that is easy to mount, characterized in that: The invention comprises a matte black polyester film layer (1), a first 3M adhesive layer (2), a black polyester film layer (3), a second 3M adhesive layer (4), a self-adhesive layer (5) and a PET release film layer (6) which are arranged in sequence from top to bottom and matched with each other. The matte black polyester film layer (1), the first 3M adhesive layer (2) and the PET release film layer (6) are all provided with W-shaped grooves at matching positions. The sizes of the matte black polyester film layer (1), the first 3M adhesive layer (2), the black polyester film layer (3), the second 3M adhesive layer (4) and the self-adhesive layer (5) are not larger than the sizes of the PET release film layer (6), and the sizes of the self-adhesive layer (5) are smaller than the sizes of the first 3M adhesive layer (2) and the second 3M adhesive layer (4). The matte black polyester film layer (1) and the first 3M adhesive layer (2) have the same structure and size, the black polyester film layer (3) and the second 3M adhesive layer (4) have the same structure and size, the size of the matte black polyester film layer (1) and the first 3M adhesive layer (2) is not less than the size of the black polyester film layer (3) and the second 3M adhesive layer (4), and the size of the black polyester film layer (3) and the second 3M adhesive layer (4) is greater than the size of the self-adhesive (5); The thickness of the first 3M adhesive layer (2) and the second 3M adhesive layer (4) are respectively 0.06-0.13 mm.

2. A button battery protective film that is easy to mount according to claim 1, characterized in that: The matte black polyester film layer (1), the first 3M adhesive layer (2) and the PET release film layer (6) are all provided with matching W-shaped grooves at the same position on the top.

3. A button battery protective film that is easy to mount according to claim 1 or 2, characterized in that: The W-shaped groove comprises a first protrusion (7), a second protrusion (8) and a horizontal protrusion (9) connecting the first protrusion (7) and the second protrusion (8); the first protrusion (7) and the horizontal protrusion (9), and the horizontal protrusion (9) and the second protrusion (8) are connected respectively by arc-shaped grooves (10).

4. The button battery protective film that is easy to mount according to claim 1, characterized in that: The matte black polyester film layer (1) has a thickness of 50-188 μm.

5. The button battery protective film that is easy to mount according to claim 1, characterized in that: The thickness of the black polyester film layer (3) is 50-300 μm.

6. The button battery protective film that is easy to mount according to claim 1, characterized in that: The thickness of the self-adhesive (5) is 0.3 mm.

7. The button battery protective film that is easy to mount according to claim 1, characterized in that: The thickness of the PET release film layer (6) is 70-80 μm.

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