CN212076929U

CN212076929U - Electromagnetic shielding composite film for vehicle-mounted display product

Info

Publication number: CN212076929U
Application number: CN202020460234.5U
Authority: CN
Inventors: 方斌
Original assignee: Suzhou Svs Electric Co ltd
Current assignee: Suzhou Svs Electric Co ltd
Priority date: 2020-03-24
Filing date: 2020-03-24
Publication date: 2020-12-04
Anticipated expiration: 2030-03-24

Abstract

The utility model relates to a macromolecular material technical field, and disclose an on-vehicle electromagnetic shielding composite film for display product, include from type paper, the upper surface bonding of type paper has electrically conductive sticky tape, and the upper surface coating of electrically conductive sticky tape has first adhesive linkage, and the upper surface bonding of first adhesive linkage has electrically conductive cloth, and the upper surface coating of electrically conductive cloth has the second adhesive linkage, and the upper surface bonding of second adhesive linkage has electromagnetic shield layer, and the upper surface coating of electromagnetic shield layer has the third adhesive linkage, and the upper surface bonding of third adhesive linkage has polyurethane electrically conductive bubble cotton, and the cotton upper surface coating of polyurethane electrically conductive bubble has the fourth adhesive linkage. The utility model discloses make the electromagnetic shield complex film both have good electromagnetic shield conductive effect, have good shockproof shock-absorbing capacity again, the combined material of the unification more is most important, compromise multiple performance simultaneously, the effectual machining efficiency that has improved and saved material cost to and the fire-resistant protective properties who has increased the electromagnetic shield complex film.

Description

Electromagnetic shielding composite film for vehicle-mounted display product

Technical Field

The utility model relates to a macromolecular material technical field especially relates to an on-vehicle electromagnetic shielding complex film for display product.

Background

As is known, electromagnetic waves received by components in electronic products or electromagnetic waves received from the outside can cause serious interference to the operation of the electronic products, which affects the operation efficiency thereof, and the requirement for the electromagnetic shielding efficiency is higher and higher as the electromagnetic spectrum to be shielded is wider and wider.

With the development of 5G communication technology and Internet of things and Internet of vehicles, the problems of electromagnetic interference (EMI) and electromagnetic compatibility (EMC) caused by electromagnetic waves are increasingly serious, the interference and damage to various electronic display equipment and devices are caused, the normal work of the electronic display equipment and devices is influenced, the environment can be polluted, the human health is harmed, the conventional conductive electromagnetic shielding material is of a single-layer structure, such as conductive cloth and wave-absorbing material, and the like, the conductive or shielding effect can only be simply met, but the shock-proof buffering function required by the design structure of the product can not be taken into consideration, so that the type design of the product material is excessive, and the cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving among the prior art electromagnetic shield material and can only satisfying electrically conductive or shielding effect simply, but can't compromise the required shockproof buffer function of product design structure itself to cause the design of product material kind to be surplus, problem that the cost rises, and the on-vehicle demonstration product of proposing uses electromagnetic shielding complex film.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an on-vehicle electromagnetic shielding composite film for display product, includes from type paper, the upper surface bonding from type paper has electrically conductive adhesive tape, the upper surface coating of electrically conductive adhesive tape has first adhesive linkage, the upper surface bonding of first adhesive linkage has electrically conductive cloth, the upper surface coating of electrically conductive cloth has the second adhesive linkage, the upper surface bonding of second adhesive linkage has electromagnetic shield layer, the upper surface coating of electromagnetic shield layer has the third adhesive linkage, the upper surface bonding of third adhesive linkage has the electrically conductive bubble of polyurethane cotton, the cotton upper surface coating of the electrically conductive bubble of polyurethane has the fourth adhesive linkage, the upper surface bonding of fourth adhesive linkage has the flame retardant coating.

Preferably, the material of the electromagnetic shielding layer is a copper net, and the diameter of a mesh of the copper net is 1 mm.

Preferably, the fireproof layer is made of a fireproof soft film, and the thickness of the fireproof soft film is 1 mm.

Preferably, the materials of the first adhesive layer, the second adhesive layer, the third adhesive layer and the fourth adhesive layer are hot melt adhesives.

Preferably, the thickness of the polyurethane conductive foam is 0.5mm-3mm, the thickness of the conductive cloth is 0.1mm, the thickness of the conductive adhesive tape is 0.1mm, and the thickness of the release paper is 0.05 mm.

Preferably, a plurality of raised paper sheets are fixedly connected to the edge of the lower surface of the release paper.

Compared with the prior art, the utility model provides an electromagnetic shielding composite film for vehicle-mounted display product possesses following beneficial effect:

the electromagnetic shielding composite film for the vehicle-mounted display product is provided with the polyurethane conductive foam, the conductive cloth, the fireproof layer and the electromagnetic shielding layer, the conductive processing mode of the polyurethane conductive foam is chemical electroplating, the conventional processing mode is vacuum sputtering, compared with the conventional processing mode, the chemical electroplating effect is more sufficient, the time resistance and the weather resistance are better, the polyurethane conductive foam can be firstly compressed, so that the compactness of the polyurethane conductive foam is improved, after the finished product is compounded and laminated, the electromagnetic shielding composite film can ensure that an attached object is more sufficiently bonded when being laminated and used, so that the conductive shielding effect in an X axis, a Y axis and a Z axis direction is better, the shockproof and conductive effects are solved and the buffer performance is also met through the compounding of the polyurethane conductive foam, the conductive cloth and the conductive adhesive tape, especially because it is on-vehicle product, the better security of having guaranteed the product, in addition, the copper mesh of electromagnetic shield layer can assist the shielding electromagnetism, the flame retardant coating can increase the fire resistance of electromagnetic shield complex film simultaneously, this mechanism makes the electromagnetic shield complex film both have good electromagnetic shield electrically conductive effect, has good shockproof buffer performance again, the most important is the combined material of unifying more, compromise multiple performance simultaneously, the effectual machining efficiency that has improved and has saved material cost to and the fire-resistant protective properties who has increased the electromagnetic shield complex film.

The device does not involve the part all the same with prior art or can adopt prior art to realize, the utility model discloses make the electromagnetic shielding complex film both have good electromagnetic shielding conductive effect, have good shockproof buffer performance again, the most important combined material that unifies more compromises multiple performance simultaneously, has effectually improved machining efficiency and has saved material cost to and the fire-resistant protective properties who has increased the electromagnetic shielding complex film.

Drawings

Fig. 1 is a schematic structural view of an electromagnetic shielding composite film for a vehicle-mounted display product according to the present invention;

fig. 2 is a schematic structural diagram of a portion a of the electromagnetic shielding composite film for the vehicle-mounted display product according to the present invention.

In the figure: 1 from type paper, 2 electrically conductive sticky tape, 3 first adhesive linkage, 4 electrically conductive cloth, 5 second adhesive linkages, 6 electromagnetic shield layers, 7 third adhesive linkages, 8 polyurethane electrically conductive bubble cotton, 9 fourth adhesive linkages, 10 flame retardant coating, 11 protruding scraps of paper.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-2, an electromagnetic shielding composite film for a vehicle-mounted display product includes a release paper 1, a conductive adhesive tape 2 is adhered to an upper surface of the release paper 1, a first adhesive layer 3 is coated on an upper surface of the conductive adhesive tape 2, a conductive cloth 4 is adhered to an upper surface of the first adhesive layer 3, a second adhesive layer 5 is coated on an upper surface of the conductive cloth 4, an electromagnetic shielding layer 6 is adhered to an upper surface of the second adhesive layer 5, a third adhesive layer 7 is adhered to an upper surface of the electromagnetic shielding layer 6, a polyurethane conductive foam 8 is adhered to an upper surface of the third adhesive layer 7, a fourth adhesive layer 9 is coated on an upper surface of the polyurethane conductive foam 8, and a fireproof layer 10 is adhered to an upper surface of the fourth adhesive layer 9.

The electromagnetic shielding layer 6 is made of copper mesh, and the mesh diameter of the copper mesh is 1 mm.

The fireproof layer 10 is made of a fireproof soft film, and the thickness of the fireproof soft film is 1 mm.

The materials of the first adhesive layer 3, the second adhesive layer 5, the third adhesive layer 7 and the fourth adhesive layer 9 are hot melt adhesives, the adhesion of the hot melt adhesives is strong, and the structural stability of the electromagnetic shielding composite film can be guaranteed.

The thickness of the polyurethane conductive foam 8 is 0.5mm-3mm, the thickness of the conductive cloth 4 is 0.1mm, the thickness of the conductive adhesive tape 2 is 0.1mm, and the thickness of the release paper 1 is 0.05 mm.

From a plurality of protruding scraps of paper 11 of fixedly connected with of 1 lower surface edge of type paper, protruding scraps of paper 11 can conveniently tear the protective layer from type paper 1.

In the utility model, common foam is immersed in a bath containing electroplating solution through a chemical plating mode through polyurethane conductive foam 8, so that the conductive liquid can fully and better fully permeate into the polyurethane conductive foam 8, then the polyurethane conductive foam 8 is placed into a device to be dried in a static state, then the processed polyurethane conductive foam 8 is mechanically compressed, the compression ratio is 50 percent, if 1mm is adopted before compression, 0.05mm is adopted after compression, then an attaching machine is used for attaching a conductive adhesive tape 2 with release paper 1 and a conductive cloth 4, then an electromagnetic shielding layer 6 is combined on the conductive cloth 4, then the polyurethane conductive foam 8 is combined with the electromagnetic shielding layer 6, finally a fire-proof layer 10 is combined with the polyurethane conductive foam 8, the conductive processing mode of the polyurethane conductive foam 8 is chemical plating, the conventional processing mode is vacuum sputtering, compared with the conventional processing mode, the chemical plating effect is more sufficient, the time resistance and the weather resistance are better, the polyurethane conductive foam 8 can be firstly compressed, so that the compactness of the polyurethane conductive foam 8 is improved, after the finished product is compounded and laminated, the polyurethane conductive foam 8 has a certain compression ratio, and the electromagnetic shielding composite film can be more sufficiently bonded with a pasted object when being laminated and used, so that the conductive shielding effect in the X, Y and particularly Z axis directions is better, the electromagnetic shielding and conductive effects are solved and the shockproof buffer performance is also met through the compounding of the polyurethane conductive foam 8, the conductive cloth 4 and the conductive adhesive tape 2, particularly, because of a vehicle-mounted product, the safety of the product is better ensured, in addition, the copper mesh of the electromagnetic shielding layer 6 can assist in shielding electromagnetism, and meanwhile, the fireproof performance of the electromagnetic shielding composite film can be improved by the fireproof layer 10, the mechanism enables the electromagnetic shielding composite film to have a good electromagnetic shielding conductive effect and a good shockproof buffer performance, and is the most important composite material which is combined with other materials, and meanwhile, multiple performances are considered, so that the processing efficiency is effectively improved, the material cost is saved, and the fireproof protection performance of the electromagnetic shielding composite film is improved.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An electromagnetic shielding composite film for vehicle-mounted display products comprises release paper (1) and is characterized in that, the upper surface of the release paper (1) is adhered with a conductive adhesive tape (2), the upper surface of the conductive adhesive tape (2) is coated with a first adhesive layer (3), the upper surface of the first bonding layer (3) is bonded with a conductive cloth (4), the upper surface of the conductive cloth (4) is coated with a second bonding layer (5), an electromagnetic shielding layer (6) is bonded on the upper surface of the second bonding layer (5), the upper surface of the electromagnetic shielding layer (6) is coated with a third bonding layer (7), the upper surface of the third bonding layer (7) is bonded with polyurethane conductive foam (8), the upper surface of the polyurethane conductive foam (8) is coated with a fourth bonding layer (9), and a fireproof layer (10) is adhered to the upper surface of the fourth adhesive layer (9).

2. The electromagnetic shielding composite film for vehicle display products as claimed in claim 1, wherein the material of the electromagnetic shielding layer (6) is copper mesh, and the mesh diameter of the copper mesh is 1 mm.

3. The electromagnetic shielding composite film for vehicle-mounted display products according to claim 1, wherein the material of the fire-proof layer (10) is a fire-proof flexible film, and the thickness of the fire-proof flexible film is 1 mm.

4. The electromagnetic shielding composite film for vehicle-mounted display products according to claim 1, wherein the materials of the first adhesive layer (3), the second adhesive layer (5), the third adhesive layer (7) and the fourth adhesive layer (9) are hot melt adhesives.

5. The electromagnetic shielding composite film for vehicle-mounted display products according to claim 1, wherein the thickness of the polyurethane conductive foam (8) is 0.5mm-3mm, the thickness of the conductive cloth (4) is 0.1mm, the thickness of the conductive adhesive tape (2) is 0.1mm, and the thickness of the release paper (1) is 0.05 mm.

6. The electromagnetic shielding composite film for vehicle-mounted display products according to claim 1, wherein a plurality of raised paper sheets (11) are fixedly connected to the edge of the lower surface of the release paper (1).