CN212147798U

CN212147798U - PET aluminized high-elongation film

Info

Publication number: CN212147798U
Application number: CN202020319935.7U
Authority: CN
Inventors: 徐诤霞; 陈征; 金天诚; 陈思奇; 陈静霞
Original assignee: Zhejiang Fusheng Technology Co ltd
Current assignee: Zhejiang Fusheng Technology Co ltd
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2020-12-15
Anticipated expiration: 2030-03-16

Abstract

The utility model provides a PET aluminizes high extension membrane belongs to electronic film technical field. This PET aluminizes high extension membrane, including the carrier film layer, be equipped with insulating layer, shielding combination layer and shielding rete on the carrier film layer in proper order, be equipped with on the shielding rete and peel off the protective layer, the shielding rete is formed by the gluing agent coating, and the shielding combination layer is including aluminizing layer, corona layer and polyimide film layer, and aluminizing layer, corona layer and polyimide film layer from the top down stack gradually for polyimide film layer, corona layer and aluminizing layer. The utility model discloses a shielding combination layer and shielding adhesive film layer's dual setting has strengthened the electromagnetic shield nature of electronic film, very big protection the electronic product under the electronic film, avoid it impaired or disturbed, the effectual thermal influence that reduces the electronic film reduction that sets up of insulating layer.

Description

PET aluminized high-elongation film

Technical Field

The utility model belongs to the technical field of the film, a PET aluminizes high extension membrane is related to.

Background

With the rapid development of the information age, electromagnetic waves of various frequencies and wavelengths fill the entire earth space. These electromagnetic waves will generate different levels of interference to unshielded sensitive electronic components, circuit boards, computers, communication facilities, etc., causing data distortion and communication disorder. The electronic film is an accessory product in the electronic product, and the electronic film is used for covering the electronic product to protect the electronic product. Electronic products generally have electromagnetic interference problems, and in order to avoid interference elimination or interference of the electronic products, a shielding function is arranged on the existing electronic film.

Electromagnetic shielding is one of the important measures for improving electromagnetic compatibility of electronic products and equipment, and refers to a way of effectively reducing various electromagnetic interferences in the air by preventing or reducing energy transmission through a shielding body. Electromagnetic shielding is mainly classified into electric shielding (mainly referring to shielding by an electrostatic field and an alternating electric field), magnetic shielding (mainly referring to shielding by a static magnetic field and an alternating magnetic field), and electromagnetic shielding (referring to electromagnetic wave shielding). However, the existing electronic film has relatively poor shielding effect and no heat insulation effect, and when an electronic product is affected by a high-temperature environment, the electronic product is easily damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided a PET aluminizes high extension membrane.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a PET aluminizes high extension membrane, includes the carrier film layer, its characterized in that, be equipped with insulating layer, shielding combined layer and shielding rete on the carrier film layer in proper order, be equipped with on the shielding rete and peel off the protective layer, the shielding rete is formed by the gluing agent coating, the shielding combined layer is including aluminizing layer, corona layer and polyimide film layer, and aluminizing layer, corona layer and polyimide film layer from the top down stack gradually for polyimide film layer, corona layer and aluminizing layer.

The arrangement of the insulating layer enables the area which is not required to be electrically connected with the electronic film to play an insulating role, avoids penetration of current and static electricity, and improves safety of people and products.

The polyimide film layer is a polyimide film, and the polyimide film comprises a pyromellitic polyimide film and a biphenyl polyimide film. The former is a product from DuPont, USA, with the trade name of Kapton, and is prepared from pyromellitic anhydride and diaminodiphenyl ether. The latter is produced by Nippon corporation under the trade name Uplix and is prepared from biphenyltetracarboxylic dianhydride and diphenyletherdiamine (R type) or m-phenylenediamine (S type). The utility model discloses a polyimide film layer can adopt above-mentioned ordinary polyimide film on the existing market all can. But the high haze and extensibility of the film are improved by the polyimide film layer.

The adhesive mainly comprises 18-20 parts by weight of an adhesive main body, 30 parts by weight of conductive materials distributed in the adhesive main body and 25-35 parts by weight of solvent, wherein the adhesive main body is one or a mixture of more of modified epoxy resin, polyacrylic resin, modified rubber, polyester resin and polyurethane resin, the conductive materials are one or a mixture of more of conductive powder mainly comprising Ni powder and modified substances thereof and conductive carbon nanotubes, and the conductive powder is in a sheet shape, a spherical shape and a fibrous shape.

Preferably, the corona layer is formed by laminating a polyethylene terephthalate film layer and a grid-shaped metal layer.

In the corona layer, because of the polyethylene terephthalate rete has certain polarity and combines to form electron cloud stack with the outer electron of aluminium atom, make the polyethylene terephthalate rete more firm with the combination between the layer of aluminizing, so lead to the migration of aluminizing easily, through addding latticed metal level, with the charge release of polyethylene terephthalate rete, avoid combining with the outer electron of aluminium atom to the phenomenon that prevents the layer of aluminizing migration takes place.

Preferably, the peel protection layer edge has an extended tear strip one. Tear strip one and peel off the protective layer and be same material, the setting of tear strip one is convenient for people will peel off the protective layer and tear from shielding glued membrane layer.

Preferably, the edge of the carrier film layer is provided with a second extending tearing strip. Tear strip two and carrier rete are same material, and the setting of tear strip two is convenient for people to tear the carrier rete from the insulating layer.

Preferably, the thermal insulation layer comprises a SiO2 aerogel thermal insulation film. The SiO2 aerogel heat insulation film is in a transparent state, does not influence the incidence of visible light, and has good heat insulation performance.

Advantageous effects

The utility model provides a PET aluminizes high extension membrane possesses following beneficial effect:

1. this PET aluminizes high extension membrane, through the setting of insulating layer for need not to play insulating effect with the regional of electronic film electric connection, avoid the breakthrough of electric current and static, improve the security of people and product, the setting of insulating layer has reduced heat transfer, has further protected the electronic product under the electronic film, reduces it and is influenced by heat.

2. This PET aluminizes high extension membrane, through the dual setting of shielding combined layer and shielding rete, has strengthened the electromagnetic shielding nature of electronic film, very big protection the electronic product under the electronic film, avoid it impaired or disturbed.

3. This PET aluminizes high extension membrane, tear strip one and tear strip two's setting, and the protective layer and the carrier film layer tear off will be peeled off to people when using to be convenient for.

4. The polyimide film enables the film to have high extensibility.

Drawings

Fig. 1 is a cross-sectional view of the present PET aluminum-plated high-elongation film.

Fig. 2 is a top view of the present PET aluminum-plated high elongation film.

Fig. 3 is a cross-sectional view of the PET aluminized high-elongation film as a shielding combination layer.

In the figure, 1, a carrier film layer; 2. a thermal insulation layer; 3. an insulating layer; 4. a shielding combination layer; 5. a shielding adhesive film layer; 6. stripping the protective layer; 7. plating an aluminum layer; 8. a corona layer; 9. a polyimide film layer; 10. tearing a strip I; 11. and (5) tearing a second strip.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-3, this PET aluminizing high extension film, including carrier film layer 1, carrier film layer 1 is last to be equipped with insulating layer 2 in proper order, insulating layer 3, shielding combination layer 4 and shielding plastic film layer 5, be equipped with on the shielding plastic film layer 5 and peel off protective layer 6, the setting of insulating layer 3, make the region that need not with electronic film electric connection play the insulating action, avoid the penetration of electric current and static, improve the security of people and product, shielding combination layer 4 and shielding plastic film layer 5's dual setting, the electromagnetic shielding nature of electronic film has been strengthened, very big protection electronic product under the electronic film, avoid it impaired or disturbed, insulating layer 2's setting, heat transfer has been reduced, further protected electronic product under the electronic film, reduce its influence of being heated. The thermal insulation layer 2 comprises a SiO2 aerogel thermal insulation film. The SiO2 aerogel heat insulation film is in a transparent state, does not influence the incidence of visible light, and has good heat insulation performance.

The edge of the peel-off protection layer 6 has an extended tear strip one 10. The first tear strip 10 and the stripping protective layer 6 are made of the same material, and the first tear strip 10 is convenient for people to tear the stripping protective layer 6 from the shielding adhesive film layer 5. The edge of the carrier film layer 1 is provided with a second extending tearing strip 11. Tear strip two 11 and carrier film layer 1 are same material, and the setting of tear strip two 11 is convenient for people to tear carrier film layer 1 from insulating layer 2.

The shielding adhesive film layer 5 is formed by coating an adhesive, the adhesive mainly comprises 18-20 parts by weight of an adhesive main body, 30 parts by weight of a conductive material and 25-35 parts by weight of a solvent, the adhesive main body is one or a mixture of more of modified epoxy resin, polyacrylic resin, modified rubber, polyester resin and polyurethane resin, the conductive material is one or a mixture of more of conductive powder mainly comprising Ni powder and a modifier thereof and conductive carbon nanotubes, and the conductive powder is in a sheet shape, a spherical shape and a fibrous shape, and the electromagnetic shielding performance of the product can be remarkably improved by the conductive adhesive film layer.

The shielding combination layer 4 comprises an aluminum plating layer 7, a corona layer 8 and a polyimide film layer 9, wherein the aluminum plating layer 7, the corona layer 8 and the polyimide film layer 9 are sequentially stacked into the polyimide film layer 9, the corona layer 8 and the aluminum plating layer 7 from top to bottom. The polyimide film layer 9 is a polyimide film, and the polyimide film includes a pyromellitic polyimide film and a biphenyl polyimide film. The former is a product from DuPont, USA, with the trade name of Kapton, and is prepared from pyromellitic anhydride and diaminodiphenyl ether. The latter is produced by Nippon corporation under the trade name Uplix and is prepared from biphenyltetracarboxylic dianhydride and diphenyletherdiamine (R type) or m-phenylenediamine (S type). The utility model discloses a polyimide film layer can adopt above-mentioned ordinary polyimide film on the existing market all can. But the high haze of the electronic film is improved by the polyimide film layer 9.

The corona layer 8 is formed by laminating a polyethylene terephthalate film layer and a grid-shaped metal layer. In corona layer 8, have certain polarity because of the polyethylene terephthalate rete and combine to form electron cloud stack with the outer electron of aluminium atom, make the polyethylene terephthalate rete more firm with the combination between the layer 7 of aluminizing, so lead to aluminizing 7 migration easily, through addding latticed metal level, with the charge release of polyethylene terephthalate rete, avoid combining with the outer electron of aluminium atom to the phenomenon that prevents to aluminize 7 migration takes place.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Although the terms of carrier film layer 1, insulating layer 2, insulating layer 3, shielding combination layer 4, shielding adhesive film layer 5, release protective layer 6, aluminized layer 7, corona layer 8, polyimide film layer 9, tear strip one 10, tear strip two 11, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a PET aluminizes high extension membrane, includes the carrier film layer, its characterized in that, be equipped with insulating layer, shielding combined layer and shielding rete on the carrier film layer in proper order, be equipped with on the shielding rete and peel off the protective layer, the shielding rete is formed by the gluing agent coating, the shielding combined layer is including aluminizing layer, corona layer and polyimide film layer, and aluminizing layer, corona layer and polyimide film layer from the top down stack gradually for polyimide film layer, corona layer and aluminizing layer.

2. A PET aluminized high stretch film according to claim 1, wherein the corona layer is formed by laminating a polyethylene terephthalate film layer and a mesh-like metal layer.

3. The PET aluminized high stretch film according to claim 1, wherein the peel ply edge has a first tear strip extending therefrom.

4. The PET aluminized high stretch film according to claim 1, wherein the carrier film layer has a second tear strip extending along an edge thereof.

5. The PET aluminized high stretch film according to claim 1, wherein the thermal insulation layer includes a SiO2 aerogel thermal insulation film.