Flame-retardant shielding type mylar film

Abstract

The utility model discloses a flame-retardant shielding type mylar film, and relates to the technical field of mylar films. The mylar film body comprises a first base layer, a flame-retardant layer, a heat insulation layer, a shielding layer and a second base layer which are sequentially connected, a high-temperature-resistant adhesive layer is arranged on the first base layer, the flame-retardant layer is arranged between the first base layer and the heat insulation layer in a wave shape, a filling cavity is formed in the flame-retardant layer and filled with inert gas, the second base layer is a PET wear-resistant insulating layer, and the shielding layer is arranged between the first base layer and the heat insulation layer. The mylar film body is simple in structure and good in flame-retardant and shielding effects; the high-temperature-resistant adhesive layer and the first base layer are arranged, so that the ignition point of the mylar is improved, and the mylar is not easy to burn; the flame-retardant layer is arranged, the flame-retardant effect is achieved by filling inert gas into a filling cavity formed by concave and convex surfaces, the heat insulation layer is used for isolating heat inside and outside the mylar film, and electromagnetic shielding glue and the shielding layer jointly achieve electromagnetic and static shielding; and the second base layer has wear-resistant and insulating effects, so that the performance and the service life of the mylar film are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of mylar sheet, specifically, it relates to a flame-retardant shielding mylar sheet. BACKGROUND

[0002] Mylar sheet is a kind of PET polyester film, is widely used in electronic, household appliances, instrument, display, battery, computer and periphery equipment's gasket, file, screen and protection, and can replace general adhesive tape, is suitable for electronic components in the machine packaging time to be used to package, so that electronic components can be safer in use.

[0003] Mylar sheet has developed various functional types of products, such as insulation type, buffer type, wear-resistant type, sealing type, which can realize insulation, sealing, shielding effect, and mylar sheet needs to be attached to the surface of a part of the product when used, such as wire connection, which requires mylar sheet to withstand high temperature, and when the product is abnormal, the high temperature is sharply increased, which may also ignite the mylar sheet and cause safety accidents. UTILITY MODEL CONTENT

[0004] In view of the deficiencies in the prior art, the utility model aims at providing a flame-retardant shielding mylar sheet, which solves the problem of poor high-temperature resistance of the mylar sheet body.

[0005] The above technical purpose of the utility model is realized by the following technical scheme: a flame-retardant shielding mylar sheet, comprising a mylar sheet body, the mylar sheet body comprises a first base layer, a flame-retardant layer, a heat insulation layer, a shielding layer and a second base layer connected in sequence, at least one side of the first base layer is provided with a high-temperature resistant adhesive layer, a release film layer is arranged on the high-temperature resistant adhesive layer, the flame-retardant layer is arranged in a wave shape between the first base layer and the heat insulation layer, the flame-retardant layer is provided with a filling cavity, the filling cavity is filled with inert gas, the heat insulation layer and the shielding layer are adhered, the second base layer is a PET wear-resistant insulation layer, and the thickness of the second base layer is not greater than 1mm.

[0006] The utility model is further provided: the wave-shaped flame-retardant layer has continuous concave surface and convex surface, the concave surface is abutted with the surface of the first base layer, so that the space between the concave surface and the heat insulation layer forms a first air cavity, the convex surface is abutted with the surface of the heat insulation layer, so that the space between the convex surface and the first base layer forms a second air cavity, the filling cavity is composed of a plurality of first air cavities and second air cavities arranged at intervals, and the both ends of the filling cavity are sealed by a sealing adhesive layer.

[0007] The utility model further sets up: the heat insulation layer is ultrathin aerogel heat insulation cotton, the thickness of heat insulation layer is set up 0.3-1.2mm, the heat insulation layer is adhered on the shielding layer through electromagnetic shielding double-sided adhesive layer, the metal wire or metal sheet contained in the shielding layer is one or more alloy of copper material, aluminium material, silver material.

[0008] The utility model further sets up: the high temperature resistant adhesive layer is high temperature resistant PET adhesive layer, the thickness of this high temperature resistant adhesive layer is 0.05-0.5mm, the first base layer adopts PC melinex sheet, the high temperature resistant adhesive layer is coated in the one side of first base layer back to flame -retardant layer.

[0009] The utility model further sets up: the one side of second base layer back to shielding layer still is equipped with graphene heat dissipation coating, the thickness of graphene heat dissipation coating is 0.3-0.6mm.

[0010] The utility model further sets up: the concave-convex surface of flame -retardant layer still is equipped with flame -retardant coating, the thickness of flame -retardant coating is set up 10-30mu.

[0011] Summarized above, the utility model has following beneficial effect: melinex sheet body simple structure, flame -retardant, shielding effect is good, through setting up high temperature resistant adhesive layer and first base layer, improve the ignition point of melinex sheet, is melinex sheet not easy to burn, set up flame -retardant layer, fill in inert gas in the filling cavity formed by concave-convex surface and realize flame -retardant effect, heat insulation layer is used to isolate the heat inside and outside melinex sheet, electromagnetic shielding adhesive and shielding layer realize the shielding of electromagnetic, static electricity together, second base layer has wear -resisting insulation effect, improved the performance and service life of melinex sheet. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the whole structure schematic diagram of the utility model;

[0013] Figure 2 It is the melinex sheet body sectional view of the utility model.

[0014] In the drawing: 1, melinex sheet body;2, first base layer;3, flame -retardant layer;4, heat insulation layer;5, shielding layer;6, second base layer;7, electromagnetic shielding double-sided adhesive layer;8, graphene heat dissipation coating;9, high temperature resistant adhesive layer;10, filling cavity;101, first air cavity;102, second air cavity. DETAILED DESCRIPTION

[0015] The utility model is described in detail below in combination with the drawings and examples.

[0016] As Figure 1 , Figure 2As shown, the flame-retardant shielding Mylar sheet, the Mylar sheet body 1 includes first base layer 2, flame-retardant layer 3, heat insulation layer 4, shielding layer 5 and second base layer 6 in turn adhesion from bottom to top, wherein the first base layer 2 is coated with a layer of high-temperature-resistant adhesive layer 9 with a thickness of 0.05-0.5mm on the side away from the flame-retardant layer 3, the high-temperature-resistant adhesive layer 9 is a high-temperature-resistant PET adhesive layer, the use of high-temperature-resistant adhesive layer 9 is conducive to adapting to the use of Mylar sheet body 1 in high temperature environment, ensure the safety and service life of Mylar sheet body 1, unused Mylar sheet body 1 in the high-temperature-resistant adhesive layer 9 has a release film layer, the release film layer uses PET release film, a layer of graphene heat dissipation coating 8 with a thickness of 0.3-0.6mm is further coated on the second base layer 6 located in the uppermost layer, the graphene heat dissipation coating 8 has good heat conduction effect, which is conducive to the heat dissipation of Mylar sheet body 1.

[0017] Specifically, as Figure 2 As shown, the first base layer 2 uses PC Mylar sheet, also has the characteristics of high temperature resistance, further improves the heat resistance of Mylar sheet, which is conducive to improving the application of Mylar sheet body 1 in multiple scenes and multiple fields; the flame-retardant layer 3 is in wave shape, a plurality of concave and convex surfaces are formed in the continuous wave shape structure, the flame-retardant layer 3 is arranged between the first base layer 2 and the heat insulation layer 4, at this time, the concave surface is in abutment with the surface of the first base layer 2, so that the space between the concave surface and the heat insulation layer 4 forms a first air cavity 101, the convex surface is in abutment with the surface of the heat insulation layer 4, so that the space between the convex surface and the first base layer 2 forms a second air cavity 102, a plurality of filling cavities 10 are formed by the interval arrangement of the first air cavity 101 and the second air cavity 102, the filling cavities 10 are filled with inert gas, finally, the two ends of the filling cavities 10 are sealed by using a sealing adhesive layer, so that the inert gas is sealed in the filling cavities 10, the inert gas in the filling cavities 10 plays a role of flame retardation, when the first base layer 2 penetrates or burns due to high temperature, the inert gas is discharged, which reduces the oxygen content in the high temperature area and prevents direct burning.

[0018] As Figure 2 As shown, the heat insulation layer 4 and the shielding layer 5 are adhesion together, the heat insulation layer 4 is made of ultra-thin aerogel heat insulation cotton, the thickness of the heat insulation layer 4 is 0.3-1.2mm, the heat insulation layer 4 reduces the heat flow between the inside and outside of the Mylar sheet, and keeps the temperature of the Mylar sheet acting on the product stable, the heat insulation layer 4 and the shielding layer 5 are adhesion together by the electromagnetic shielding double-sided adhesive layer 7, the electromagnetic shielding double-sided adhesive layer 7 can realize the double effects of electromagnetic shielding and adhesive, and together with the shielding layer 5 with metal material as shielding body, the electromagnetic shielding double-sided adhesive layer 7 and the shielding layer 5 realize the shielding of electromagnetic wave and static electricity, the metal material contained in the shielding layer 5 is copper wire; the second base layer 6 is a PET wear-resistant insulating layer, which provides insulation and wear-resistant effect for the Mylar sheet body 1.

[0019] As Figure 1 , Figure 2As shown, the graphene heat dissipation coating 8 provides the effect of rapid heat dissipation for the Mylar sheet body 1, and the graphene heat dissipation coating 8 and the flame-retardant coating layer are additional technical effects according to the application scene, which belong to another embodiment, and the thickness of the flame-retardant coating layer in the embodiment is 10-30 μm.

[0020] The preferred embodiments of the present application are described above, the protection scope of the present application is not limited to the above-mentioned embodiments, and any technical solution belonging to the idea of the present application belongs to the protection scope of the present application. It should be pointed out that, for ordinary skilled in the art, some improvements and decorations without departing from the principle of the present application can also be considered as the protection scope of the present application.

Claims

1. A flame-retardant, shielding Mylar sheet comprising a Mylar sheet body (1), characterized in that: The melamine body (1) comprises a first base layer (2), a flame-retardant layer (3), a heat insulation layer (4), a shielding layer (5), and a second base layer (6) connected in sequence, at least one side of the first base layer (2) is provided with a high-temperature-resistant adhesive layer (9), the high-temperature-resistant adhesive layer (9) is provided with a release film layer, the flame-retardant layer (3) is arranged in a wave shape between the first base layer (2) and the heat insulation layer (4), the flame-retardant layer (3) is provided with a filling cavity (10), the filling cavity (10) is filled with inert gas, the heat insulation layer (4) is adhered to the shielding layer (5), and the second base layer (6) is a PET wear-resistant insulation layer and has a thickness of not more than 1 mm.

2. The flame-retardant shielding Mylar sheet according to claim 1, wherein: The wave-shaped flame-retardant layer (3) has continuous concave and convex surfaces, the concave surface is opposite to the first base layer (2) and abuts against the first base layer (2), so that a space between the concave surface and the heat insulation layer (4) forms a first air cavity (101), the convex surface is opposite to the heat insulation layer (4) and abuts against the heat insulation layer (4), so that a space between the convex surface and the first base layer (2) forms a second air cavity (102), and the filling cavity (10) is composed of a plurality of first air cavities (101) and second air cavities (102) arranged at intervals.

3. The flame-retardant shielding Mylar sheet according to claim 2, wherein: The heat insulation layer (4) is an ultrathin aerogel heat insulation cotton, the thickness of the heat insulation layer (4) is 0.3-1.2 mm, the heat insulation layer (4) is adhered to the shielding layer (5) through an electromagnetic shielding double-sided adhesive layer (7), and the metal wire or metal sheet contained in the shielding layer (5) is an alloy of one or more of copper, aluminum and silver.

4. The flame-retardant shielding Mylar sheet according to claim 3, wherein: The high-temperature-resistant adhesive layer (9) is a high-temperature-resistant PET adhesive layer, the thickness of the high-temperature-resistant adhesive layer (9) is 0.05-0.5 mm, the first base layer (2) is a PC melamine sheet, and the high-temperature-resistant adhesive layer (9) is coated on a side of the first base layer (2) away from the flame-retardant layer (3).

5. A flame-retardant shielding Mylar sheet according to claim 4, wherein: A graphene heat dissipation coating (8) is further arranged on a side of the second base layer (6) away from the shielding layer (5), and the thickness of the graphene heat dissipation coating (8) is 0.3-0.6 mm.

6. A flame-retardant shielding Mylar sheet according to claim 5, wherein: A flame-retardant coating is further arranged on the concave and convex surfaces of the flame-retardant layer (3), and the thickness of the flame-retardant coating is 10-30 μm.

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