Adhesive tape with shielding function

Abstract

The utility model discloses an adhesive tape with a shielding function, and relates to the technical field of adhesive tapes. Comprising an adhesive tape body and a winding drum, the adhesive tape body is wound on the winding drum, the adhesive tape body comprises a substrate layer, an insulating coating, a first bonding layer, a polyimide film layer, a second bonding layer, an aluminum foil shielding layer, a conductive adhesive layer and release paper, and the upper surface of the substrate layer is coated with the insulating coating. According to the adhesive tape with the shielding function, the aluminum foil shielding layer can prevent interference of external electromagnetic signals, so that the adhesive tape has a good shielding effect, meanwhile, the insulating coating is coated on the surface of the substrate layer, and epoxy resin is specifically adopted, so that the adhesive tape has very high insulating performance, a circuit board and other circuit elements can be effectively isolated, and the service life of the circuit board is prolonged. And the polyimide film layer is arranged in the inner layer, so that the polyimide film layer has excellent high-temperature stability, mechanical strength, corrosion resistance, electrical insulation performance and the like, and electronic components can be protected from being corroded by the external environment.

Description

Technical Field

[0001] The utility model relates to the technical field of adhesive tapes, in particular to an adhesive tape with a shielding function. Background Art

[0002] During the design and manufacturing process of electronic products and LCD displays, there are problems of electromagnetic leakage and electromagnetic interference in some places. How to solve electromagnetic shielding and electromagnetic compatibility is receiving more and more attention from manufacturers.

[0003] At present, the common electromagnetic shielding tapes on the market are generally single-sided copper foil tape, single-sided aluminum foil tape and single-sided conductive cloth tape. The surface of this type of product is not insulated, which can easily cause short circuits and oxidation of the metal surface. Utility Model Content

[0004] The utility model provides an adhesive tape with a shielding function to solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adhesive tape with a shielding function, comprising an adhesive tape body and a reel, wherein the adhesive tape body is wound on the reel;

[0006] The tape body includes a base material layer, an insulating coating, a first adhesive layer, a polyimide film layer, a second adhesive layer, an aluminum foil shielding layer, a conductive adhesive layer and a release paper. The insulating coating is coated on the upper surface of the base material layer, the first adhesive layer is coated on the lower surface of the base material layer, the polyimide film layer is bonded to the lower surface of the base material layer through the first adhesive layer, the second adhesive layer is coated on the polyimide film layer, the aluminum foil shielding layer is bonded to the polyimide film layer through the second adhesive layer, the conductive adhesive layer is coated on the aluminum foil shielding layer, and the release paper is bonded to the aluminum foil shielding layer through the conductive adhesive layer.

[0007] Furthermore, both ends of the reel are clamped with blocking covers, and the blocking covers are located on both sides of the tape body.

[0008] Furthermore, a clamping ring is provided at one end of the blocking cover, and is clamped to two ends of the reel through the clamping ring.

[0009] Furthermore, the base material layer is a PET film, and the insulating coating layer is an epoxy resin layer.

[0010] Furthermore, the first adhesive layer and the second adhesive layer are both acrylic adhesive layers, and the conductive adhesive layer is an acrylic adhesive layer.

[0011] Furthermore, tear lines are engraved on the release paper, and the tear lines are evenly distributed on the release paper.

[0012] Compared with the prior art, the utility model provides an adhesive tape with a shielding function, which has the following beneficial effects:

[0013] The adhesive tape with shielding function has an aluminum foil shielding layer which can prevent interference from external electromagnetic signals, so that it has a good shielding effect. At the same time, since the surface of the base material layer is coated with an insulating coating, specifically epoxy resin is used, which has high insulation performance and can effectively isolate the circuit board and other circuit components to avoid current interference or discharge. A polyimide film layer is provided in the inner layer, which has excellent high-temperature stability, mechanical strength, corrosion resistance and electrical insulation performance, etc., and can protect electronic components from erosion by the external environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is an exploded view of the utility model;

[0016] Figure 3 This is a structural diagram of the adhesive tape body of the utility model.

[0017] In the figure: 1. tape body; 11. base material layer; 12. insulating coating layer; 13. first adhesive layer; 14. polyimide film layer; 15. second adhesive layer; 16. aluminum foil shielding layer; 17. conductive adhesive layer; 18. release paper; 19. tear line; 2. reel; 3. cover; 31. snap ring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-Figure 3 The utility model discloses an adhesive tape with shielding function, comprising an adhesive tape body 1 and a reel 2, wherein the adhesive tape body 1 is wound on the reel 2, and an aluminum foil shielding layer 16 can prevent interference from external electromagnetic signals, so that it has a good shielding effect. At the same time, since the surface of the base material layer 11 is coated with an insulating coating 12, specifically epoxy resin is used, which has a high insulation performance and can effectively isolate the circuit board and other circuit components to avoid current interference or discharge, and a polyimide film layer 14 is provided in the inner layer, which has excellent high temperature stability, mechanical strength, corrosion resistance and electrical insulation performance, etc., and can protect electronic components from erosion by the external environment;

[0020] The tape body 1 includes a base material layer 11, an insulating coating 12, a first adhesive layer 13, a polyimide film layer 14, a second adhesive layer 15, an aluminum foil shielding layer 16, a conductive adhesive layer 17 and a release paper 18. The insulating coating 12 is coated on the upper surface of the base material layer 11, the first adhesive layer 13 is coated on the lower surface of the base material layer 11, the polyimide film layer 14 is bonded to the lower surface of the base material layer 11 through the first adhesive layer 13, the second adhesive layer 15 is coated on the polyimide film layer 14, the aluminum foil shielding layer 16 is bonded to the polyimide film layer 14 through the second adhesive layer 15, the conductive adhesive layer 17 is coated on the aluminum foil shielding layer 16, and the release paper 18 is bonded to the aluminum foil shielding layer 16 through the conductive adhesive layer 17.

[0021] Specifically, both ends of the reel 2 are clamped with blocking covers 3, and the blocking covers 3 are located on both sides of the tape body 1.

[0022] In this embodiment, the reel 2 is a hollow tubular structure, and its main function is to collect, store and transport soft items such as paper, fabric, film, etc. in a curled form. The cover 3 is arranged on both sides of the tape body 1, which can play a certain protective role.

[0023] Specifically, a clamping ring 31 is provided at one end of the blocking cover 3 , and the blocking cover 3 is clamped to two ends of the reel 2 through the clamping ring 31 .

[0024] In this embodiment, the blocking cover 3 and the reel 2 are conveniently connected by the action of the clamping ring 31, and the blocking cover 3 can be installed or not according to packaging needs.

[0025] Specifically, the base material layer 11 is a PET film, and the insulating coating layer 12 is an epoxy resin layer.

[0026] In this embodiment, the PET film has excellent mechanical properties, and its toughness is the best among all thermoplastics. Its tensile strength and impact strength are much higher than those of ordinary films. It has good strength and stable dimensions. The epoxy resin layer has high insulation properties and can effectively isolate circuit boards and other circuit components to avoid current interference or discharge.

[0027] Specifically, the first adhesive layer 13 and the second adhesive layer 15 are both acrylic adhesive layers, and the conductive adhesive layer 17 is an acrylic adhesive layer.

[0028] In this embodiment, the acrylic adhesive layer has high adsorption and reactivity. It can combine with other compounds to form a cross-linked structure, thereby increasing the viscosity of the adhesive. Acrylic acid can be adsorbed on the surface of the substrate to form a thin film, thereby improving its surface energy and wettability, thereby increasing adhesion. The acrylic adhesive layer has excellent bonding properties and good conductive properties.

[0029] Specifically, tear lines 19 are engraved on the release paper 18 , and the tear lines 19 are evenly distributed on the release paper 18 .

[0030] In this embodiment, after bonding with the adhesive tape, the tear line 19 is mainly used to facilitate the user to break off the excess release paper 18 .

[0031] When in use, the aluminum foil shielding layer 16 can prevent interference from external electromagnetic signals, so that it has a good shielding effect. At the same time, since the surface of the base material layer 11 is coated with an insulating coating 12, specifically epoxy resin is used, which has high insulation performance and can effectively isolate the circuit board and other circuit components to avoid current interference or discharge. A polyimide film layer 14 is provided in the inner layer, which has excellent high temperature stability, mechanical strength, corrosion resistance and electrical insulation performance, etc., and can protect electronic components from erosion by the external environment.

[0032] To sum up, the tape with shielding function, the aluminum foil shielding layer 16 can prevent the interference of external electromagnetic signals, so that it has a good shielding effect. At the same time, since the surface of the base layer 11 is coated with an insulating coating 12, specifically epoxy resin is used, which has high insulation performance and can effectively isolate the circuit board and other circuit components to avoid current interference or discharge. A polyimide film layer 14 is arranged in the inner layer, which has excellent high temperature stability, mechanical strength, corrosion resistance and electrical insulation performance, etc., and can protect electronic components from erosion by the external environment.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adhesive tape with shielding function, comprising an adhesive tape body (1) and a reel (2), characterized in that: The adhesive tape body (1) is wound on a reel (2); The adhesive tape body (1) comprises a base material layer (11), an insulating coating (12), a first adhesive layer (13), a polyimide film layer (14), a second adhesive layer (15), an aluminum foil shielding layer (16), a conductive adhesive layer (17) and a release paper (18), wherein the insulating coating (12) is coated on the upper surface of the base material layer (11), the first adhesive layer (13) is coated on the lower surface of the base material layer (11), and the polyimide film layer (14) is coated on the lower surface of the base material layer (11). 4) is bonded to the lower surface of the base material layer (11) through the first adhesive layer (13), the second adhesive layer (15) is coated on the polyimide film layer (14), the aluminum foil shielding layer (16) is bonded to the polyimide film layer (14) through the second adhesive layer (15), the conductive adhesive layer (17) is coated on the aluminum foil shielding layer (16), and the release paper (18) is bonded to the aluminum foil shielding layer (16) through the conductive adhesive layer (17).

2. The adhesive tape with shielding function according to claim 1, characterized in that: The two ends of the reel (2) are clamped with blocking covers (3), and the blocking covers (3) are located on both sides of the tape body (1).

3. The adhesive tape with shielding function according to claim 2, characterized in that: A clamping ring (31) is provided at one end of the blocking cover (3), and the blocking cover (3) is clamped to the two ends of the reel (2) via the clamping ring (31).

4. The adhesive tape with shielding function according to claim 1, characterized in that: The base material layer (11) is a PET film, and the insulating coating (12) is an epoxy resin layer.

5. The adhesive tape with shielding function according to claim 1, characterized in that: The first adhesive layer (13) and the second adhesive layer (15) are both acrylic adhesive layers, and the conductive adhesive layer (17) is an acrylic adhesive layer.

6. The adhesive tape with shielding function according to claim 1, characterized in that: The release paper (18) is engraved with tear lines (19), and the tear lines (19) are evenly distributed on the release paper (18).

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