Waterproof flame-retardant acrylic pressure-sensitive adhesive tape

Abstract

The utility model discloses a waterproof flame-retardant acrylic pressure-sensitive adhesive tape, and relates to the technical field of pressure-sensitive adhesive tapes. The waterproof flame-retardant acrylic pressure-sensitive adhesive tape comprises an aluminum foil layer, a waterproof coating arranged on the lower side of the aluminum foil layer, an adhesive layer arranged on the lower side of the waterproof coating, and a water absorption film layer and a flame-retardant layer which are arranged between the waterproof coating and the adhesive layer. The water absorption film layer is arranged between the waterproof coating and the flame-retardant layer. The flame-retardant layer is arranged between the waterproof coating and the water absorption film. With the adoption of the technical scheme, compared with an early-stage pressure-sensitive adhesive tape, the waterproof flame-retardant pressure-sensitive adhesive tape has the advantages of being waterproof and flame-retardant, and the adhesive function of the pressure-sensitive adhesive tape can be maintained and the service life of the pressure-sensitive adhesive tape can be prolonged in an environment region with relatively high humidity, high temperature or a fire source.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure-sensitive tapes, and particularly relates to a waterproof and flame-retardant acrylic pressure-sensitive tape. Background Art

[0002] With the rapid development of materials science, new polymer materials and technologies have emerged continuously, providing broad space for improving the performance of pressure-sensitive tapes. A pressure-sensitive tape is an adhesive that can adhere to an adherend under the action of slight external force. With the increasing progress of science and technology, conventional pressure-sensitive tapes are insufficient to meet the application requirements of various industries. Existing pressure-sensitive tapes have disadvantages such as poor flame-retardant performance and insufficient waterproofness, which will greatly affect the bonding function and service life of the pressure-sensitive tape in areas with high humidity, high temperature or fire safety requirements. Therefore, improvement is urgently needed. Content of the Utility Model

[0003] The purpose of the utility model is to provide a waterproof and flame-retardant acrylic pressure-sensitive tape aiming at the defects and deficiencies of the existing technology, which has the advantages of both waterproof and flame-retardant, and can also maintain the bonding function of the pressure-sensitive tape and extend the service life of the pressure-sensitive tape in an environment with high humidity, high temperature or in the presence of a fire source.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a waterproof and flame-retardant acrylic pressure-sensitive tape, comprising: an aluminum foil layer, a waterproof coating disposed on the lower side of the aluminum foil layer, an adhesive layer disposed on the lower side of the waterproof coating, and a water-absorbing film layer and a flame-retardant layer disposed between the waterproof coating and the adhesive layer.

[0005] The utility model is further arranged such that the water-absorbing film layer is disposed between the waterproof coating and the flame-retardant layer.

[0006] The utility model is further arranged such that the flame-retardant layer is disposed between the waterproof coating and the water-absorbing film.

[0007] The utility model is further arranged such that the thickness of the aluminum foil layer is 20 - 100 μm.

[0008] The utility model is further arranged such that the waterproof coating is made of silicone rubber material.

[0009] The utility model is further arranged such that the water-absorbing film layer is made of polyacrylate material.

[0010] The utility model is further arranged such that the flame-retardant layer is made of a flame-retardant PET film.

[0011] The utility model is further arranged such that the adhesive layer is made of an acrylic adhesive.

[0012] The present utility model is further provided that the waterproof and flame-retardant acrylic pressure-sensitive tape further comprises a release film layer disposed on the lower side of the adhesive layer.

[0013] The present utility model is further provided that the release film layer is a silicone oil type film.

[0014] After adopting the above technical solution, the beneficial effects of the present utility model are as follows: In the present utility model, by providing an aluminum foil layer, a waterproof coating disposed on the lower side of the aluminum foil layer, and an adhesive layer disposed on the lower side of the waterproof coating, and an absorbent film layer and a flame-retardant layer are further disposed between the waterproof coating and the adhesive layer, such layered arrangement enables the pressure-sensitive tape to effectively prevent the penetration of moisture in a humid environment, has a strong waterproof function, and at the same time can improve the flame-retardant performance of the pressure-sensitive tape when exposed to high temperature or fire, achieving the effect that the pressure-sensitive tape can both waterproof and flame-retard. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0016] Figure 1 is a schematic structural diagram of the waterproof and flame-retardant acrylic pressure-sensitive tape in Embodiment 1;

[0017] Figure 2 is a schematic structural diagram of the waterproof and flame-retardant acrylic pressure-sensitive tape in Embodiment 2.

[0018] Description of the reference numerals: 1. Aluminum foil layer; 2. Waterproof coating; 3. Absorbent film layer; 4. Flame-retardant layer; 5. Adhesive layer; 6. Release film layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following further describes the present utility model in detail with reference to the drawings.

[0020] This specific embodiment is only an explanation of the present utility model, and it is not a limitation of the present utility model. Those skilled in the art can make modifications to this embodiment without creative contributions according to needs after reading this specification, but as long as they are within the scope of the claims of the present utility model, they are protected by the Patent Law.

[0021] Embodiment 1

[0022] Refer to Figure 1, this embodiment relates to a waterproof and flame-retardant acrylic pressure-sensitive tape, which includes an aluminum foil layer 1, a waterproof coating layer 2, a water-absorbing film layer 3, a flame-retardant layer 4, and an adhesive layer 5 arranged in sequence from top to bottom. The aluminum foil layer 1 is arranged on the topmost layer of the pressure-sensitive tape, and due to its good light-shielding property and density, it plays a role in preventing ultraviolet rays and water. The waterproof coating layer 2 is arranged between the aluminum foil layer 1 and the water-absorbing film layer 3, which can prevent some of the moisture permeating from the aluminum foil layer 1 from entering, thereby further improving the waterproof performance of the pressure-sensitive tape and extending its service life in a humid environment. The water-absorbing film layer 3 is arranged between the waterproof coating layer 2 and the flame-retardant layer 4, which can effectively absorb the moisture remaining inside the pressure-sensitive tape and reduce the influence of moisture entering the adhesive layer 5 on the performance of the pressure-sensitive tape. The flame-retardant layer 4 is arranged between the water-absorbing film layer 3 and the adhesive layer 5, which can effectively improve the flame-retardant performance of the pressure-sensitive tape, and the aluminum foil layer 1 and the waterproof coating layer 2 can further improve the flame-retardant performance of the pressure-sensitive tape. The adhesive layer 5 is the part of the pressure-sensitive tape used for bonding the adherend, and it has good adhesiveness and environmental friendliness. Through the above-mentioned stacked arrangement, the pressure-sensitive tape can effectively prevent the penetration of moisture in a humid environment, has strong waterproof function, and at the same time can improve the flame-retardant performance of the pressure-sensitive tape when exposed to high temperature or fire, achieving the effect that the pressure-sensitive tape can both waterproof and flame-retard.

[0023] Furthermore, the thickness of the aluminum foil layer 1 is between 20 - 100 μm. The aluminum foil layer 1 can effectively isolate external moisture, gas, microorganisms, and dust, preventing them from penetrating into the interior of the pressure-sensitive tape. Also, because the surface of the aluminum foil is smooth and not easy to absorb water after polishing treatment, when the surface of the aluminum foil encounters moisture, the moisture will form a very thin water droplet on its surface and will not penetrate into the interior of the aluminum foil layer 1, thereby effectively improving the water and ultraviolet resistance performance of the pressure-sensitive tape. In this embodiment, the thickness of the aluminum foil layer 1 is 60 μm. In other embodiments, the thickness of the aluminum foil layer 1 can also be set to 20 μm, 30 μm, 40 μm, 50 μm, 70 μm, 80 μm, 90 μm, 100 μm. As long as the thickness of the aluminum foil layer 1 is within the range of 20 - 100 μm, no specific limitation is made here.

[0024] In this embodiment, the waterproof coating layer 2 is made of silicone rubber material. Due to the special properties of the material, the waterproof coating layer 2 has excellent waterproof performance, and due to its excellent high and low temperature resistance performance, it can still maintain good waterproof effect at different ambient temperatures. Further, the thickness of the waterproof coating layer 2 is between 20 - 100 μm. In this embodiment, the thickness of the waterproof coating layer 2 is set to 60 μm. In other embodiments, the thickness of the waterproof coating layer 2 is also set to 20 μm, 30 μm, 40 μm, 50 μm, 70 μm, 80 μm, 90 μm, 100 μm. As long as the thickness of the waterproof coating layer 2 is within the range of 20 - 100 μm, no specific limitation is made here.

[0025] In this embodiment, the water-absorbing film layer 3 is made of polyacrylate material, and its structure can collect and absorb the moisture emitted from the surrounding air, and accelerate the volatilization of the moisture to improve the stability of the pressure-sensitive adhesive tape. Further, the thickness of the water-absorbing film layer 3 is set between 10-50 μm. In this embodiment, the thickness of the water-absorbing film layer 3 is set to 30 μm. In other embodiments, the thickness of the water-absorbing film layer 3 can also be set to 20 μm, 25 μm, 35 μm, 40 μm, 45 μm, 50 μm. As long as the thickness of the water-absorbing film layer 3 is in the range of 10-50 μm, no specific limitation is made here.

[0026] Specifically in this embodiment, the water-absorbing film layer 3 is arranged on the lower side of the waterproof coating 2, and the positions of the water-absorbing film layer 3 and the waterproof coating 2 cannot be interchanged. The main function of the waterproof coating 2 is to prevent water, and it prevents relatively large water droplets; while the water-absorbing film layer 3 is to prevent moisture. Therefore, the water-absorbing film layer 3 can help regulate the humidity inside the pressure-sensitive adhesive tape, and at the same time the waterproof coating 2 ensures that external moisture will not invade. If there is no water-absorbing film layer 3, the inside of the pressure-sensitive adhesive tape will be invaded by moisture, which will affect the bonding performance of the adhesive layer 5. Also, because the water absorption effect of the water-absorbing film layer 3 has a limit, if sufficient moisture invades the water-absorbing film layer 3 and makes its water absorption effect reach saturation, then the effect of absorbing moisture in the air is difficult to reflect, and the possibility of moisture invading the adhesive layer 5 and damaging its structure is greatly increased. Therefore, the positions of the water-absorbing film layer 3 and the waterproof coating 2 cannot be interchanged, so as to achieve a strong waterproof function and maintain the bonding performance of the adhesive layer 5.

[0027] In this embodiment, the flame-retardant layer 4 is made of a flame-retardant PET film. When the substrate burns, certain free radical groups will react with H+ and OH- free radicals to interrupt the combustion reaction chain, thereby enhancing the flame retardancy of the pressure-sensitive adhesive tape. Further, the thickness of the flame-retardant layer 4 is set between 20-100 μm. In this embodiment, the thickness of the flame-retardant layer 4 can be set to 60 μm. In other embodiments, the thickness of the flame-retardant layer 4 can also be set to 20 μm, 30 μm, 40 μm, 50 μm, 70 μm, 80 μm, 90 μm, 100 μm. As long as the thickness of the flame-retardant layer 4 is in the range of 20-100 μm, no specific limitation is made here.

[0028] In this embodiment, the adhesive layer 5 is made of an acrylic adhesive. The acrylic adhesive can provide excellent bonding strength and has good adhesion to a variety of substrates (such as plastics, metals, glass, wood, and paper, etc.), and can maintain stable viscosity even after long-term use. Further, the thickness of the adhesive layer 5 is set between 10 - 150 μm. In this embodiment, the thickness of the adhesive layer 5 is set to 90 μm. In other embodiments, the thickness of the adhesive layer 5 can also be set to 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 100 μm, 110 μm, 120 μm, 130 μm, 140 μm, 150 μm. As long as the thickness of the adhesive layer 5 is within the range of 10 - 150 μm, no specific limitation is made here.

[0029] In this embodiment, the waterproof and flame-retardant acrylic pressure-sensitive tape further includes: a release film layer 6 disposed on the lower side of the adhesive layer 5. The release film layer 6 is disposed on the lower side of the adhesive layer 5 and plays a role in protecting and supporting the pressure-sensitive tape.

[0030] In this embodiment, the release film layer 6 is made of a silicone oil-based film. The silicone oil-based film is a material with a non-sticky surface, which can effectively prevent the adhesive layer 5 from adhering to itself or other materials. During production, storage, and transportation, this property avoids the adhesion between pressure-sensitive tapes, ensuring that each pressure-sensitive tape can be used independently. At the same time, before use, the release film layer 6 covers the adhesive layer 5, protecting the adhesive layer 5 from dust, dirt, and other contaminants, and maintaining the cleanliness and viscosity of the adhesive layer 5. Further, the thickness of the release film layer 6 is set between 12.5 - 75 μm. In this embodiment, the thickness of the release film layer 6 can be set to 45 μm. Of course, in other embodiments, the thickness of the adhesive layer 5 can also be set to 12.5 μm, 20 μm, 25 μm, 30 μm, 35 μm, 40 μm, 50 μm, 55 μm, 60 μm, 65 μm, 70 μm, 75 μm. As long as the thickness of the release film layer 6 is within the range of 12.5 - 75 μm, no specific limitation is made here.

[0031] Embodiment Two

[0032] Refer to Figure 2 , this embodiment is basically the same as Embodiment One, the difference is only that: in this embodiment, the order of the water-absorbing film layer 3 and the flame-retardant layer 4 is changed, that is, the pressure-sensitive tape includes an aluminum foil layer 1, a waterproof coating 2, a flame-retardant layer 4, a water-absorbing film layer 3, an adhesive layer 5, and a release film layer 6 which are stacked in sequence from top to bottom. The order of the water-absorbing film layer 3 and the flame-retardant layer 4 is swapped, which also enables the pressure-sensitive tape to effectively prevent the penetration of moisture in a humid environment, has a strong waterproof function, and can improve the flame-retardant performance of the pressure-sensitive tape when exposed to high temperatures or fire sources, achieving the effect that the pressure-sensitive tape can both waterproof and flame-retard.

[0033] The above is only used to illustrate the technical solution of the present utility model rather than to limit it. Any other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the present utility model shall be covered within the scope of the claims of the present utility model as long as they do not depart from the spirit and scope of the technical solution of the present utility model.

Claims

1. A waterproof and flame-retardant acrylic pressure-sensitive tape, characterized in that: include: An aluminum foil layer (1), a waterproof coating (2) arranged on the lower side of the aluminum foil layer (1), an adhesive layer (5) arranged on the lower side of the waterproof coating (2), and a water-absorbing film layer (3) and a flame-retardant layer (4) arranged between the waterproof coating (2) and the adhesive layer (5).

2. The waterproof and flame-retardant acrylic pressure-sensitive adhesive tape according to claim 1, characterized in that: The water-absorbing film layer (3) is arranged between the waterproof coating (2) and the flame-retardant layer (4).

3. The waterproof and flame-retardant acrylic pressure-sensitive adhesive tape according to claim 1, characterized in that: The flame retardant layer (4) is arranged between the waterproof coating (2) and the water absorbing film.

4. The waterproof and flame-retardant acrylic pressure-sensitive adhesive tape according to any one of claims 1 to 3, characterized in that: The thickness of the aluminum foil layer (1) is 20-100 μm.

5. The waterproof and flame-retardant acrylic pressure-sensitive adhesive tape according to any one of claims 1 to 3, characterized in that: The waterproof coating (2) is made of silicone rubber.

6. The waterproof and flame-retardant acrylic pressure-sensitive adhesive tape according to any one of claims 1 to 3, characterized in that: The water-absorbing film layer (3) is made of polyacrylate material.

7. The waterproof and flame-retardant acrylic pressure-sensitive adhesive tape according to any one of claims 1 to 3, characterized in that: The flame retardant layer (4) is made of a flame retardant PET film.

8. The waterproof and flame-retardant acrylic pressure-sensitive adhesive tape according to any one of claims 1 to 3, characterized in that: The adhesive layer (5) is made of acrylic adhesive.

9. The waterproof and flame-retardant acrylic pressure-sensitive adhesive tape according to any one of claims 1 to 3, characterized in that: The waterproof and flame-retardant acrylic pressure-sensitive adhesive tape further comprises: a release film layer (6) arranged on the lower side of the adhesive layer (5).

10. The waterproof and flame-retardant acrylic pressure-sensitive adhesive tape according to claim 9, characterized in that: The release film layer (6) is a silicone oil type film.

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