Composite shielding mylar tape

Abstract

The utility model discloses a kind of composite shielding mylar tape, including dustproof release roll and along the direction of winding and unwinding of dustproof release roll interval stick on the back of dustproof release roll several pieces of mylar sheet, the mylar sheet from top to bottom sequentially includes heat dissipation layer, first shielding layer, mylar sheet base layer, second shielding layer and sticking layer, the mylar sheet is stuck on the dustproof release roll by the sticking layer, a plurality of rows of shielding holes are set up on the first shielding layer, the heat dissipation layer is set up with heat dissipation hole corresponding the position of shielding hole, heat dissipation strip is protruded with both sides of each row heat dissipation hole, and heat dissipation groove is formed between adjacent two heat dissipation strips.The utility model has excellent electrical insulation and mechanical strength while guaranteeing shielding effect, and has good heat dissipation performance.

Description

Technical Field

[0001] This utility model relates to the field of Mylar tape technology, specifically to a composite shielding Mylar tape. Background Technology

[0002] With the rapid development of society and economy, Mylar tape is mainly used in the manufacture of computer monitors, computer peripheral cables and transformers. It is also used in the pipe joints of central air conditioning pipes, range hoods, refrigerators, water heaters, etc., and in precision electronic products, computer equipment, wires, cables and other places that require electromagnetic shielding. In high-frequency transmission, it can isolate electromagnetic interference and resist high temperature to prevent spontaneous combustion.

[0003] Existing Mylar tapes have shortcomings in use, especially as various electronic products require stronger heat dissipation performance due to enhanced performance, and cables also require enhanced heat dissipation performance due to power and load issues. Therefore, while ensuring the shielding effect of Mylar tapes, improvements are needed to address heat dissipation performance. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a composite shielding Mylar tape that, while ensuring the shielding effect, has excellent electrical insulation properties and mechanical strength, as well as good heat dissipation performance.

[0005] The technical solution of this utility model is as follows:

[0006] A composite shielding Mylar tape includes a dustproof release roll and several Mylar sheets that are spaced apart and adhered to the back of the dustproof release roll along the winding and unwinding direction. Each Mylar sheet includes, from top to bottom, a heat dissipation layer, a first shielding layer, a Mylar sheet base layer, a second shielding layer, and an adhesive layer. The Mylar sheet is adhered to the dustproof release roll by the adhesive layer. The first shielding layer has several rows of shielding holes. The heat dissipation layer has heat dissipation holes corresponding to the positions of the shielding holes. Each row of heat dissipation holes has heat dissipation strips protruding on both sides, and heat dissipation grooves are formed between two adjacent heat dissipation strips.

[0007] Furthermore, the heat dissipation layer is a copper foil layer, the heat dissipation strip is an aluminum foil strip, and the heat dissipation strip and the heat dissipation layer are connected by a metallurgical composite.

[0008] Furthermore, the first shielding layer is a copper foil layer.

[0009] Furthermore, the Mylar film base layer is a PET layer.

[0010] Furthermore, the second shielding layer is an aluminum foil layer.

[0011] Furthermore, the adhesive layer is a thermally conductive adhesive layer.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: When idle, this utility model uses a dustproof release roll to prevent dust from accumulating on the surface of the Mylar sheet, which would affect its use. When in use, the dustproof release roll between two adjacent Mylar sheets is torn apart, and the torn Mylar sheet can be used. It is quick and convenient to use. The Mylar sheet includes, from top to bottom, a heat dissipation layer, a first shielding layer, a Mylar sheet base layer, a second shielding layer, and an adhesive layer. The adhesive layer is a thermally conductive adhesive layer with good thermal conductivity and electrical insulation properties. The Mylar film base layer is a PET layer, which has excellent electrical insulation properties, mechanical strength, and chemical corrosion resistance. Shielding layers are set on both the top and bottom of the Mylar film base layer. The first shielding layer on top of the Mylar film base layer is a copper foil layer with several rows of shielding holes. The copper foil layer has a good suppression effect on both low-frequency and high-frequency interference, and the design of the shielding holes can improve heat dissipation while ensuring shielding effect. Combined with the surface copper foil heat dissipation layer and heat dissipation holes, aluminum foil heat dissipation strips, and heat dissipation grooves, it can provide excellent heat dissipation performance for the Mylar film and improve its mechanical strength while taking cost into account. The second shielding layer on the bottom of the Mylar film base layer is an aluminum foil layer. The aluminum foil layer has a shielding efficiency of over 90% against high-frequency electromagnetic interference, further improving the shielding effect of the Mylar film. Moreover, the aluminum foil layer is lower in cost, lighter in weight, more flexible, and easier to process than the copper foil layer. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 A schematic diagram of the structure of a composite shielding Mylar tape provided by this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the Mylar sheet described in this utility model. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0017] To illustrate the technical solution described in this utility model, specific embodiments are described below.

[0018] Example

[0019] Please see Figure 1, Figure 2 This embodiment provides a composite shielding Mylar tape, including a dustproof release roll 1 and several Mylar sheets 2 that are spaced apart and bonded to the back of the dustproof release roll 1 along the winding and unwinding direction of the dustproof release roll 1. The Mylar sheet 2 includes, from top to bottom, a heat dissipation layer 21, a first shielding layer 22, a Mylar sheet base layer 23, a second shielding layer 24, and an adhesive layer 25. The Mylar sheet 2 is bonded to the dustproof release roll 1 by the adhesive layer 25. The first shielding layer 22 has several rows of shielding holes 221. The heat dissipation layer 21 has heat dissipation holes 211 at the positions corresponding to the shielding holes 221. Each row of heat dissipation holes 211 has heat dissipation strips 212 protruding on both sides. The heat dissipation strips 212 are metallurgically connected to the heat dissipation layer 21, and heat dissipation grooves 213 are formed between two adjacent heat dissipation strips 21.

[0020] When not in use, the composite shielding Mylar tape can be protected from dust by the dust release roll 1, preventing dust from accumulating on the surface of the Mylar sheet and affecting its use. When in use, simply tear open the dust release roll 1 between two adjacent Mylar sheets 2 to use the torn individual Mylar sheet 2. It is quick and convenient to use.

[0021] The Mylar sheet 2 of the composite shielding Mylar tape includes a heat dissipation layer 21, a first shielding layer 22, a Mylar sheet base layer 23, a second shielding layer 24, and an adhesive layer 25. The adhesive layer 25 is a thermally conductive adhesive layer with good thermal conductivity and electrical insulation properties. The Mylar sheet base layer 23 is a PET layer, which has excellent electrical insulation properties, mechanical strength, and chemical corrosion resistance. Shielding layers are provided on both the top and bottom of the Mylar sheet base layer 23. The first shielding layer 22 on the upper Mylar sheet base layer 23 is a copper foil layer with several rows of shielding holes 221. The copper foil layer has a good suppression effect on both low-frequency and high-frequency interference, and the design of the shielding holes 221 improves heat dissipation while ensuring the shielding effect. The thermal effect, combined with the surface heat dissipation layer 21 (a copper foil layer), heat dissipation holes 211, heat dissipation strips 212 (aluminum foil strips), and heat dissipation grooves 213, can provide excellent heat dissipation performance for the Mylar sheet and improve its mechanical strength while taking cost into consideration; the second shielding layer 24 under the Mylar sheet base layer 23 is an aluminum foil layer. The aluminum foil layer can achieve a shielding efficiency of over 90% for high-frequency electromagnetic interference, further improving the shielding effect of the Mylar sheet. Moreover, the aluminum foil layer is lower in cost, lighter in weight, more flexible, and easier to process than the copper foil layer.

[0022] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A composite shielding Mylar tape, characterized in that: The device includes a dustproof release roll and several Mylar sheets that are spaced apart and adhered to the back of the dustproof release roll along the winding and unwinding direction. Each Mylar sheet includes, from top to bottom, a heat dissipation layer, a first shielding layer, a Mylar sheet base layer, a second shielding layer, and an adhesive layer. The Mylar sheets are adhered to the dustproof release roll by the adhesive layer. The first shielding layer has several rows of shielding holes. The heat dissipation layer has heat dissipation holes corresponding to the positions of the shielding holes. Each row of heat dissipation holes has heat dissipation strips protruding on both sides, and heat dissipation grooves are formed between two adjacent heat dissipation strips.

2. The composite shielding Mylar tape according to claim 1, characterized in that: The heat dissipation layer is a copper foil layer, the heat dissipation strip is an aluminum foil strip, and the heat dissipation strip and the heat dissipation layer are connected by a metallurgical composite.

3. The composite shielding Mylar tape according to claim 1, characterized in that: The first shielding layer is a copper foil layer.

4. The composite shielding Mylar tape according to claim 1, characterized in that: The base layer of the Mylar film is a PET layer.

5. The composite shielding Mylar tape according to claim 1, characterized in that: The second shielding layer is an aluminum foil layer.

6. The composite shielding Mylar tape according to claim 1, characterized in that: The adhesive layer is a thermally conductive adhesive layer.

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