CN209666481U - A kind of double release stretching composite membranes - Google Patents

Abstract

The utility model discloses a kind of double release stretching composite membranes, it includes base film layer (1), and the microporous barrier (3) being arranged on the base film layer (1), one end face of base film layer (1) thickness direction is equipped with adhered layer (2), the microporous barrier (3) is fixed on the base film layer (1) through the adhered layer (2), the microporous barrier (3) is arranged in the middle part of the base film layer (1), with spacing to form the paste section for stretching composite membrane between the both ends of microporous barrier (3) width direction and the both ends of the base film layer (1) width direction.Production efficiency and yields can be improved for the buffer layer in high temperature and pressure process for pressing in double release stretching composite membranes provided by the utility model.

Description

A kind of double release stretching composite membranes

Technical field

The utility model relates to field of material technology, in particular to a kind of double release stretching composite membranes.

Background technique

With the development in the market 5G, nonmetallic rear cover becomes standard configuration in the 5G epoch.Due to plastic texture and material stiffened Etc. technologies development, PMMA/PC composite board curved surface battery cover scheme is also that most of terminal client is adopted.

Referring to Fig. 1, PMMA/PC composite board includes the PMMA/PC substrate layer 01 being sequentially arranged from top to bottom, logo layers 02, UV texture layer 03, optical film layer 04 and ink layer 05.

Composite material is applied to the product in the fields 3C such as electronics, communication in existing forming technique, and being substantially all will be imitated 3D design, needs using high temperature and pressure process for pressing, under the processing procedure link, the ink particle of the composite board of PC-PMMA Point, dust fall, weighs the problems such as point wounded and can be amplified exposure impurity, causes high-pressure molding section yield that cannot be obviously improved, formation process Overall bad loss is big, while the wasting of resources and the waste of cost.

Utility model content

The utility model aim is to provide a kind of double release stretching composite membranes, for composite plate in high temperature and pressure process for pressing Buffer layer between material and mold core reduces pressing fraction defective.

Based on the above issues, technical solution provided by the utility model is:

A kind of double release stretching composite membranes comprising base film layer and the microporous barrier being arranged on the base film layer, the base One end face in layer film thickness direction is equipped with adhered layer, and the microporous film layers are fixed on the base film layer through the adhered layer, The microporous barrier is arranged in the middle part of the base film layer, the both ends of the microporous barrier width direction and the base film layer width direction Both ends between with spacing with formed it is described stretch composite membrane paste section.

In one of them embodiment, the base film layer is PVC film.

In one of them embodiment, the base film layer with a thickness of 0.05~0.12mm, tension stress >=1.5Kg/ 10mm, elongation >=150%.

In one of them embodiment, the microporous barrier is ultra-high molecular mass polyethylene micropore film.

In one of them embodiment, the microporous barrier is with a thickness of 5~20um, porosity 30%~45%, air permeability 60~300sec/100cc.

Compared with prior art, the utility model has the advantages that:

Using the technical solution of the utility model, which is pasted onto being pressed for high temperature and pressure process for pressing It on plate, places it between plate and mold core, can avoid the ink particle point of plate, impurity, dust fall, weighs wounded to process for pressing Influence, and composite membrane is pasted onto plate two sides, avoids leaving residue glue in panel body, does not pollute plate, will not be with mould Core is viscous, improves the production yield and production efficiency of product.

Detailed description of the invention

It, below will be to required in embodiment description in order to illustrate more clearly of the technical solution of the utility model embodiment The attached drawing used is briefly described, and the drawings in the following description are merely some embodiments of the present invention, for ability For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached Figure.

Fig. 1 is the structural schematic diagram of PMMA/PC composite board；

Fig. 2 is a kind of double release structural schematic diagrams for stretching composite membrane embodiment of the utility model embodiment；

Fig. 3 (a) is the schematic diagram of the utility model embodiment high temperature high pressure process for pressing；

Fig. 3 (b) is using PMMA/PC composite board curved surface battery cover made from high temperature and pressure process for pressing；

Wherein:

01, substrate；02, logo layers；03, UV texture layer；04, optical film layer；05, ink layer；

1, base film layer；2, adhered layer；2-1, paste section；3, microporous barrier；

100, PMMA/PC composite board；200, composite membrane is stretched；300, high temperature and pressure pressing machine；400, formation die core； 500, curved-surface structure.

Specific embodiment

Above scheme is described further below in conjunction with specific embodiment.It should be understood that these embodiments are for illustrating The utility model and be not limited to limitation the scope of the utility model.Implementation condition used in the examples can be according to specific producer Condition do further adjustment, the implementation condition being not specified is usually the condition in routine experiment.

Referring to fig. 2, it is the structural schematic diagram of the utility model embodiment, a kind of double release stretching composite membranes is provided, including One end face of base film layer 1 and the microporous barrier 3 being arranged on base film layer 1,2 thickness direction of base film layer is equipped with adhered layer 2, micropore Film 3 is fixed on base film layer 1 through adhered layer 2, and microporous barrier 3 is arranged in the middle part of base film layer 1, the both ends of 3 width direction of microporous barrier With spacing to form the paste section 2-1 for stretching composite membrane 200 on base film layer 1 between the both ends of 1 width direction of base film layer.

Wherein, base film layer 1 be PVC film, base film layer 1 with a thickness of 0.05~0.12mm, tension stress >=1.5Kg/10mm, stretch Long rate >=150%.

Microporous barrier 3 be ultra-high molecular mass polyethylene micropore film, microporous barrier 3 with a thickness of 5~20um, porosity 30%~ 45%, 60~300sec/100cc of air permeability.

Referring to Fig. 3 (a), PMMA/PC composite board curved surface battery cover is made using high temperature and pressure process for pressing, using high temperature High-pressure forming machine 300 and formation die core 400 are used cooperatively, and high temperature and pressure molding machine 300 and formation die core 400 are existing skill Art, by above-mentioned double release lower surfaces for stretching composite membrane 200 and being pasted onto PMMA/PC composite board 100, then by PMMA/PC Composite board 100 is placed between high temperature and pressure molding machine 300 and formation die core 400, by high temperature and pressure molding machine 300 by plate It is shaped to curved-surface structure 500 shown in Fig. 3 (b).

Examples detailed above is only to illustrate the technical ideas and features of the present invention, and its object is to allow be familiar with technique People is can to understand the content of the utility model and implement accordingly, is not limited the protection scope of the present invention.It is all According to the spirit of the present invention substantially equivalent transformation that is done or modification, should all cover the protection scope of the utility model it It is interior.

Claims (5)

1. a kind of double release stretching composite membranes, it is characterised in that: including base film layer (1) and be arranged on the base film layer (1) One end face of microporous barrier (3), base film layer (1) thickness direction is equipped with adhered layer (2), and the microporous barrier (3) is through described viscous Paste layer (2) is fixed on the base film layer (1), and the microporous barrier (3) is arranged in the middle part of the base film layer (1), the micropore There is spacing to form described stretch again between the both ends of film (3) width direction and the both ends of the base film layer (1) width direction Close the paste section of film.

2. double release stretching composite membranes according to claim 1, it is characterised in that: the base film layer (1) is PVC film.

3. double release stretching composite membrane according to claim 2, it is characterised in that: the base film layer (1) with a thickness of 0.05~0.12mm, tension stress >=1.5Kg/10mm, elongation >=150%.

4. double release stretching composite membranes according to claim 1, it is characterised in that: the microporous barrier (3) is supra polymer Mass polyethylene micropore film.

5. double release stretching composite membrane according to claim 4, it is characterised in that: the microporous barrier (3) with a thickness of 5~ 20um, porosity 30%~45%, 60~300sec/100cc of air permeability.