CN211138392U

CN211138392U - Mute light plastic-aluminum membrane of black

Info

Publication number: CN211138392U
Application number: CN201921419920.1U
Authority: CN
Inventors: 李志嘉; 刘德福; 刘德龙
Original assignee: Shenzhen Btree Industrial Co ltd
Current assignee: Guangdong Guanglin Caiyao New Energy Materials Co ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-07-31
Anticipated expiration: 2029-08-30

Abstract

The utility model provides a black matte plastic-aluminum membrane from outer to interior in proper order by matte layer, black polyamide thin layer, first adhesive layer, aluminium foil layer, second adhesive layer and polypropylene thin layer combination one-tenth an organic whole. The utility model provides a black matte plastic-aluminum membrane adds black pigment in the polyamide film layer, has so not only realized black shading effect, and the while is for coating one deck black layer again behind the coating adhesive, has reduced one step of coating technology, then coats one deck matte oil on the polyamide film again, makes the plastic-aluminum membrane reach the effect of matte, synthesizes above-mentioned structure and has just formed black matte plastic-aluminum membrane.

Description

Mute light plastic-aluminum membrane of black

Technical Field

The utility model relates to a lithium cell packaging material field, in particular to mute light plastic-aluminum membrane of black.

Background

The lithium ion battery technology is mature day by day at present, the lithium ion battery is widely applied to the fields of 3C electronic products, power batteries, energy storage and the like, and therefore a greater demand is placed on a lithium battery packaging material.

At present, in the actual use process, one common method is to coat a layer of black matte ink on the outer layer of a polyamide film, but the black matte aluminum-plastic film prepared by the method has a grayish feeling in appearance and influences the appearance of black; another method is to coat the outer layer of the polyamide film with a layer of black ink and then a layer of matte ink, which requires two coating steps.

SUMMERY OF THE UTILITY MODEL

For solving the problem mentioned in the background art, the utility model provides a mute light plastic-aluminum membrane of black.

The utility model adopts the technical proposal that:

a black matte aluminum-plastic film is composed of a matte layer, a black polyamide film layer, a first adhesive layer, an aluminum foil layer, a second adhesive layer and a polypropylene film layer which are combined into a whole from outside to inside in sequence.

The thickness of the matte layer is 0.5-5.0 mu m.

The matte layer is a layer of matte oil and is coated on the black polyamide film layer.

The thickness of the black polyamide film layer is 15-30 mu m.

Corona is generated on two sides of the black polyamide film layer, the light transmittance is less than 2%, and the haze is less than 10%; the black pigment in the black polyamide film layer is carbon black or black master batch.

The thickness of the first adhesive layer and the thickness of the second adhesive layer are both 3-5 mu m.

The first adhesive layer is a two-component polyurethane adhesive; the second adhesive layer is an olefin polyester-based adhesive.

The thickness of the aluminum foil layer is 35-40 mu m.

The side of the aluminum foil layer facing the first adhesive layer is a matte side, and the side facing the second adhesive layer is a bright side.

The thickness of the polypropylene film layer is 40-80 mu m.

The utility model has the advantages that:

the black matte aluminum-plastic film is prepared by adding black pigment into the polyamide film layer, so that the black shading effect is realized, and compared with the method of coating a black layer after coating an adhesive, the one-step coating process is reduced. And then a layer of matte oil is coated on the polyamide film, so that the aluminum plastic film achieves a matte effect. The utility model discloses simple structure, the manufacturing of being convenient for, the plastic-aluminum membrane coating is firm, and encapsulation safe and reliable gives other people the sense of elegance.

Drawings

Fig. 1 is the utility model provides a pair of black matte plastic-aluminum membrane structure sketch map.

Reference numerals:

1 matte layer 2 Black Polyamide film layer 3 first adhesive layer

4 aluminium foil layer 5 second adhesive layer 6 polypropylene film layer

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the embodiments will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1, the black matte aluminum-plastic film is composed of a matte layer 1, a black polyamide film layer 2, a first adhesive layer 3, an aluminum foil layer 4, a second adhesive layer 5 and a polypropylene film layer 6 which are combined into a whole from outside to inside.

The matte layer 1 is a layer of matte oil, is coated on the black polyamide film layer 2, and has the thickness of 0.5-5.0 mu m.

The thickness of the black polyamide film layer 2 is 15-30 mu m, corona is generated on two sides, the corona value is more than 52 dyne, the light transmittance is less than 2%, the haze is less than 10%, the tensile strength is 200-245 MPa, the elongation at break is 80-150%, the color difference (light source SCI10 degree) is L (black and white) is less than 30, a (red and green) is-1, b (yellow and blue) is-1, and black pigment in the black polyamide film layer 2 is carbon black or black master batch which is added into the polyamide film during melt extrusion.

The first adhesive layer 3 is a two-component polyurethane adhesive and has a thickness of 3-5 μm.

The thickness of the aluminum foil layer 4 is 35-40 mu m, the aluminum foil is an aluminum foil processed by a double-sided passivation solution, the surface facing the first adhesive layer 3 is a matte surface, and the surface facing the second adhesive layer 5 is a bright surface.

The second adhesive layer 5 is an olefin polyester adhesive and has a thickness of 3 to 5 μm.

The first adhesive layer 3 and the second adhesive layer 5 are both polyurethane glue.

The thickness of the polypropylene film layer 6 is 40-80 mu m.

Example 1

The black matte aluminum-plastic film layer structure comprises a matte layer 1 with the thickness of 3 mu m, a black polyamide film layer 2 with the thickness of 15 mu m, a first adhesive layer 3 with the thickness of 3 mu m, an aluminum foil layer 4 with the thickness of 35 mu m, a second adhesive layer 5 with the thickness of 4 mu m and a polypropylene film layer 6 with the thickness of 30 mu m.

Example 2

The black matte aluminum-plastic film layer structure comprises a matte layer 1 with the thickness of 3 mu m, a black polyamide film layer 2 with the thickness of 20 mu m, a first adhesive layer 3 with the thickness of 3 mu m, an aluminum foil layer 4 with the thickness of 40 mu m, a second adhesive layer 5 with the thickness of 4 mu m and a polypropylene film layer 6 with the thickness of 40 mu m.

Example 3

The black matte aluminum-plastic film layer structure comprises a matte layer 1 with the thickness of 3 mu m, a black polyamide film layer 2 with the thickness of 25 mu m, a first adhesive layer 3 with the thickness of 3 mu m, an aluminum foil layer 4 with the thickness of 40 mu m, a second adhesive layer 5 with the thickness of 4 mu m and a polypropylene film layer 6 with the thickness of 40 mu m.

The specific implementation process method comprises the following steps:

1. coating a first adhesive layer 3 on the matte surface of the aluminum foil layer 4, then compounding the adhesive layer with the black polyamide film layer 2, rolling and curing;

2. coating a second adhesive layer 5 on the bright surface of the aluminum foil layer 4 of the compounded polyamide film, compounding the second adhesive layer with a polypropylene film layer 6, and rolling and curing;

3. and after curing, coating a layer of matte oil on the outer surface of the black polyamide film layer 2 to form a matte layer 1, and curing to prepare the black matte aluminum-plastic film.

It is obvious that the attached drawings describe some embodiments of the present invention, and it is within the scope of the present invention for a person of ordinary skill in the art to derive other embodiments from the drawings without inventive exercise.

Although terms such as matte layer, adhesive layer, polyamide film layer and polypropylene film layer are used more often herein, these terms are used merely to more conveniently describe and explain the nature of the present invention, but do not exclude the possibility of using other terms.

Claims

1. The black matte aluminum-plastic film is characterized in that: the black polyamide film is characterized by being formed by combining a matte layer (1), a black polyamide film layer (2), a first adhesive layer (3), an aluminum foil layer (4), a second adhesive layer (5) and a polypropylene film layer (6) into a whole from outside to inside in sequence.

2. The black matte aluminum-plastic film according to claim 1, wherein: the thickness of the matte layer (1) is 0.5-5.0 mu m.

3. The black matte aluminum-plastic film according to claim 1 or 2, wherein: the matte layer (1) is a layer of matte oil and is coated on the black polyamide film layer (2).

4. The black matte aluminum-plastic film according to claim 1, wherein: the thickness of the black polyamide film layer (2) is 15-30 mu m.

5. The black matte aluminum-plastic film according to claim 1 or 4, wherein: the black polyamide film layer (2) is corona-coated on two sides, the light transmittance is less than 2%, and the haze is less than 10%; the black pigment in the black polyamide film layer (2) is carbon black or black master batch.

6. The black matte aluminum-plastic film according to claim 1, wherein: the thickness of the first adhesive layer (3) and the thickness of the second adhesive layer (5) are both 3-5 mu m.

7. The black matte aluminum-plastic film according to claim 1 or 6, wherein: the first adhesive layer (3) is a two-component polyurethane adhesive; the second adhesive layer (5) is an olefin polyester-based adhesive.

8. The black matte aluminum-plastic film according to claim 1, wherein: the thickness of the aluminum foil layer (4) is 35-40 mu m.

9. The black matte aluminum-plastic film according to claim 1, wherein: the side of the aluminum foil layer (4) facing the first adhesive layer (3) is a matte side, and the side facing the second adhesive layer (5) is a bright side.

10. The black matte aluminum-plastic film according to claim 1, wherein: the thickness of the polypropylene film layer (6) is 40-80 mu m.