CN219338842U

CN219338842U - Copper foil shielding tape

Info

Publication number: CN219338842U
Application number: CN202223338213.4U
Authority: CN
Inventors: 何银江; 张道卿
Original assignee: Wujiang Yiyang Metal Material Technology Co ltd
Current assignee: Wujiang Yiyang Metal Material Technology Co ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-07-14
Anticipated expiration: 2032-12-12

Abstract

The utility model discloses a copper foil shielding tape, which relates to the field of shielding Mylar tapes, and is technically characterized in that: including PET substrate layer, copper foil shielding layer and bond the polyester glue layer between PET substrate layer and copper foil shielding layer, copper foil shielding layer is provided with from top to bottom slope and cuts the clearance, it is a plurality of to cut the clearance setting, a plurality of cut the clearance and set up along the length direction array of copper foil, a plurality of cut the clearance and cut the copper foil shielding layer and cut apart into a plurality of copper foil monomers, be located every adjacent two cut apart the clearance between the copper foil monomer is provided with the insulating layer in. The utility model has low cost and excellent electromagnetic shielding capability.

Description

Copper foil shielding tape

Technical Field

The utility model relates to the field of shielding Mylar tapes, in particular to a copper foil shielding tape.

Background

The traditional shielding Mylar tape in the communication cable industry is formed by compounding PET baseband and aluminum foil, and has excellent shielding effect and mechanical and physical properties. Communication cables typically consist of four twisted wire pairs over which signals are transmitted during normal operation. In operation, four twisted wire pairs are respectively interfered by adjacent twisted pairs and nearby electromagnetic interference sources, and in order to reduce electromagnetic interference, the following solutions are conventionally adopted: 1. increasing the physical spacing of the twisted pairs; 2. the twisted wire pairs are coated with a continuous shielding metal foil. However, the method increases the diameter of the cable, reduces the flexibility of the cable and increases the cost of the cable; the second method is that the continuous shielding metal foil is adopted, so that a large amount of charges can be accumulated on the surface of the continuous shielding metal foil, and the anti-interference capability to external electromagnetic waves is reduced, so that the continuous shielding metal foil is required to be grounded, and the production cost of the communication cable is increased.

There is therefore a need to propose a new solution to this problem.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide the copper foil shielding tape which has low cost and excellent electromagnetic shielding capability.

The technical aim of the utility model is realized by the following technical scheme: the utility model provides a copper foil shielding tape, includes PET substrate layer, copper foil shielding layer and bonds the polyester glue layer between PET substrate layer and the copper foil shielding layer, copper foil shielding layer is provided with the clearance of cutting from top to bottom slope, it is a plurality of to cut the clearance setting, a plurality of cut the clearance and follow the length direction array setting of copper foil, a plurality of cut the clearance and cut the copper foil shielding layer and cut apart and form a plurality of copper foil monomers, be located every adjacent two copper foil monomers between cut the clearance in be provided with the insulating layer.

In one embodiment, the insulating layer is a mylar layer.

In one embodiment, the copper foil monomer and the polyester film layer are adhesively connected by a polyester imide adhesive layer.

In one embodiment, the truncated gap is inclined at an angle of 30 ° -70 °.

In one embodiment, the thickness of the PET substrate layer is 15um-30um, and the thickness of the copper foil monomer is 8um-25um.

In summary, the utility model has the following beneficial effects: according to the utility model, the plurality of copper foil monomers are arranged, the cutting gaps are arranged among the plurality of copper foil monomers, and the insulating layer is arranged in the cutting gaps, so that the copper foil shielding layer is in a discontinuous state, a large amount of charges are not easy to collect on the copper foil shielding layer, the copper foil shielding layer is not required to be grounded, the investment of labor and material resources is reduced, the production cost of a communication cable can be effectively reduced, and the cutting gaps are obliquely arranged, so that no gap exists in the copper foil shielding layer along the vertical direction of the cutting surface of the copper foil shielding layer, and the electromagnetic shielding effect same as that of a common continuous copper foil layer can be achieved.

Drawings

FIG. 1 is a schematic structural view of a copper foil shielding tape according to an embodiment of the present application;

fig. 2 is a schematic structural view of a copper foil single body, an insulating layer and a polyester imide adhesive layer in the copper foil shielding tape of the embodiment of the present application.

In the figure: 1. a copper foil shielding layer; 11. copper foil monomers; 2. a polyester gum layer; 3. a PET substrate layer; 4. an insulating layer; 5. a polyester imine adhesive layer; 6. and cutting off the gap.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings.

As shown in fig. 1 and 2, the embodiment of the application provides a copper foil shielding tape, including PET substrate layer 3, copper foil shielding layer 1 and bond in PET substrate layer 3 and copper foil shielding layer 1 between polyester glue layer 2, copper foil shielding layer 1 is provided with from top to bottom slope and cuts clearance 6, it is a plurality of to cut clearance 6 set up, a plurality of cut clearance 6 sets up along the length direction array of copper foil, a plurality of cut clearance 6 cuts apart copper foil shielding layer 1 and forms a plurality of copper foil monomers 11, is located every adjacent two cut clearance 6 between the copper foil monomers 11 is provided with insulating layer 4.

In the above manner, the plurality of copper foil monomers 11 are arranged, the cutting gaps 6 are arranged among the plurality of copper foil monomers 11, and the insulating layer 4 is arranged in the cutting gaps 6, so that the copper foil shielding layer 1 is in a discontinuous state, a large amount of charges are not easy to collect on the copper foil shielding layer 1, the copper foil shielding layer 1 is not required to be grounded, the investment of labor and material resources is reduced, the production cost of a communication cable can be effectively reduced, and the cutting gaps 6 are obliquely arranged, so that the copper foil shielding layer 1 does not have gaps along the vertical direction of the cutting surfaces of the copper foil shielding layer, and the electromagnetic shielding effect identical with that of a common continuous copper foil layer can be achieved.

In this embodiment, the insulating layer 4 is a polyester film layer.

Specifically, the copper foil monomer 11 and the polyester film layer are bonded and connected through the polyester imine adhesive layer 5.

In the mode, the polyester film layer has good heat resistance and insulation, the polyester imide adhesive layer 5 is formed by tiling the polyester imide adhesive, and the polyester imide adhesive has excellent shearing strength, impact resistance and good flexibility, so that the situation that each copper foil monomer 11 is not easy to tear is avoided, and the polyester imide adhesive has good durability.

In this embodiment, the inclination angle of the cutoff gap 6 is 30 ° -70 °. The preferred inclination angle in this embodiment is 45 °, which is advantageous for reducing the amount of the polyester film layer while ensuring that the copper foil shielding layer 1 achieves a good electromagnetic shielding effect.

In this embodiment, the thickness of the PET substrate layer 3 is 15um-30um, and the thickness of the copper foil 11 is 8um-25um.

The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims

1. The utility model provides a copper foil shielding tape, includes PET substrate layer (3), copper foil shielding layer (1) and bonds polyester glue layer (2) between PET substrate layer (3) and copper foil shielding layer (1), its characterized in that: the copper foil shielding layer (1) is provided with a plurality of cutting gaps (6) from top to bottom in an inclined manner, the cutting gaps (6) are arranged in a plurality, the cutting gaps (6) are arranged in an array mode along the length direction of the copper foil, the cutting gaps (6) divide the copper foil shielding layer (1) into a plurality of copper foil monomers (11), and insulating layers (4) are arranged in the cutting gaps (6) between every two adjacent copper foil monomers (11).

2. The copper foil shielding tape of claim 1, wherein: the insulating layer (4) is a polyester film layer.

3. The copper foil shielding tape of claim 1, wherein: the copper foil monomer (11) and the polyester film layer are bonded and connected through the polyester imine adhesive layer (5).

4. The copper foil shielding tape of claim 2, wherein: the inclination angle of the cutting gap (6) is 30-70 degrees.

5. The copper foil shielding tape of claim 1, wherein: the thickness of the PET substrate layer (3) is 15-30 um, and the thickness of the copper foil monomer (11) is 8-25 um.