CN214188784U

CN214188784U - Wave line form knurling POE glued membrane

Info

Publication number: CN214188784U
Application number: CN202021603796.7U
Authority: CN
Inventors: 乔刚; 黄宝玉; 季志超; 金旭; 杨求平; 张刚
Original assignee: Changzhou Sveck Photovoltaic New Material Co ltd
Current assignee: Changzhou Sveck Photovoltaic New Material Co ltd
Priority date: 2020-08-05
Filing date: 2020-08-05
Publication date: 2021-09-14
Anticipated expiration: 2030-08-05

Abstract

The utility model relates to the technical field of POE adhesive films, in particular to a raised embossed POE adhesive film, which comprises an adhesive film layer, wherein embossed structures with different shapes and depths are arranged on two sides of the adhesive film layer; one side of the adhesive film layer is provided with a wavy layer; and a frosting layer is arranged on the other side of the adhesive film layer. After the structure is adopted, the utility model discloses following beneficial effect has: 1. the embossing depths of the two sides of the adhesive film are different, so that the air storage capacity is increased, and the bonding possibility between the adhesive films is reduced; 2. the special structural design of the wavy layer of the adhesive film finally reduces the slipping phenomenon of the assembly end. 3. This design can guarantee when high temperature melting evacuation, forms exhaust passage between POE glued membrane and battery piece, glass, the busbar, ensures that the air in the subassembly can smoothly discharge, reduces because of the not good bubble of producing of exhaust and the possibility of delaminating.

Description

Wave line form knurling POE glued membrane

Technical Field

The utility model relates to a POE glued membrane technical field, especially a wave line form knurling POE glued membrane.

Background

The solar cell packaging material with rapid development of solar photovoltaic becomes one of the hot spots of intense research in the global photovoltaic field. In recent years, the production of solar cells has increased in dramatic quantities in our country, and research and development of related encapsulating materials have become more and more important. A solar cell packaging adhesive film plays an important role in the field of solar cells in China.

POE has very narrow molecular weight distribution and short branched chain, so that it has excellent mechanical performance and low temperature processing performance. On the other hand, the POE has no unsaturated bond and group which is easy to decompose under the action of light and heat, and shows good heat resistance and ultraviolet aging resistance. The POE adhesive film can be used for packaging solar single-glass and double-glass components, and is particularly widely applied to the double-glass components. The POE adhesive film has the excellent characteristics of high water vapor barrier property, high visible light transmittance, high volume resistivity, excellent weather resistance, long-term PID (proportion integration differentiation) resistance and the like, and in addition, the unique high-reflectivity performance of the POE adhesive film can improve the effective utilization rate of the assembly to sunlight and is beneficial to increasing the power of the assembly.

The POE adhesive film formula has liquid auxiliary agents, the compatibility of the conventional liquid auxiliary agents and the POE substrate is poor, and the separated auxiliary agents form a smooth oil film on the surface of the adhesive film, so that the resistance between the adhesive film and glass and a battery piece is reduced, and the phenomenon of slipping of the end of the assembly is caused. The POE glued membrane that uses at present has viscidity under normal atmospheric temperature, bonds easily and is difficult for separating between the membrane when receiving and unreeling, causes difficulty and inconvenience for the automation of low reaches subassembly. In the lamination process, air flow is caused by vacuum pumping in a high-temperature molten state, so that the partially packaged battery piece can be subjected to position deviation, and residual gas among the battery piece, glass, a bus bar and an adhesive film is easy to generate bubbles or delaminate.

Disclosure of Invention

The utility model discloses the technical problem that needs to solve provides a POE glued membrane that does not skid, not adhere, exhaust smoothly.

In order to solve the technical problem, the utility model discloses a raised grain type embossed POE adhesive film, which comprises an adhesive film layer, wherein embossed structures with different shapes and depths are arranged on two surfaces of the adhesive film layer; one side of the adhesive film layer is provided with a wavy layer; and a frosting layer is arranged on the other side of the adhesive film layer.

Preferably, the pattern depth of the wave-shaped pattern layer is 50-200 μm.

Preferably, the wave-shaped layer is a discontinuous wave-shaped pattern formed by salient points.

Preferably, the salient points are inverted pyramids, hemispheres, cones, polygonal prisms and polygonal truncated pyramids.

Preferably, the space between adjacent waves of the wave layer is 0.5-2 mm.

Preferably, the pattern depth of the frosted layer is 50-150 μm.

Preferably, the thickness of the adhesive film layer is 0.45-0.9 mm.

After the structure is adopted, the utility model discloses following beneficial effect has:

1. the embossing depth of the two sides of the glue film is not consistent, the gap between the side containing the wavy layer and the other side of the inverted pyramid is larger, the air storage capacity is increased, and the bonding possibility between the glue films is reduced.

2. Due to the special structural design of the wavy line layer of the adhesive film, separated liquid auxiliaries can be stored in the grooves between adjacent discontinuous wavy lines, and the possibility of forming a surface oil film is reduced. And the discontinuous raised grains can effectively increase the friction force between the battery piece and the battery piece, and finally reduce the slipping phenomenon at the end of the assembly.

3. This design can guarantee when high temperature melting evacuation, forms exhaust passage between POE glued membrane and battery piece, glass, the busbar, ensures that the air in the subassembly can smoothly discharge, reduces because of the not good bubble of producing of exhaust and the possibility of delaminating.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural view of the wavy embossed POE adhesive film of the present invention.

In the figure: 1 is a film layer and 2 is a corrugated layer.

Detailed Description

As shown in fig. 1, the utility model discloses a raised grain form knurling POE glued membrane, including glue film layer 1, glue film layer 1 two sides sets up the knurling structure of different shapes, depth, and the glued membrane two sides knurling degree of depth is inconsistent, and it is great to contain the space between the another side of raised grain layer one side and inverted pyramid, has increased the air storage capacity, has reduced the possibility that bonds between the glued membrane. One side of the adhesive film layer 1 is provided with a wavy layer 2, and the other side of the adhesive film layer 1 is provided with a frosted layer. In the embodiment, the thickness of the adhesive film layer 1 is 0.45-0.9mm, and the pattern depth of the wave pattern layer 2 is 50-200 μm.

As shown in fig. 1, the wave layer 2 is a discontinuous wave formed by convex points, and the convex points are inverted pyramid, hemisphere, cone, polygonal prism, and polygonal frustum. The ripple layer corresponds the battery piece, and the special structure design on the ripple layer of glued membrane, the liquid auxiliary agent that separates out can be stored to the recess between the adjacent discontinuous ripple, reduces the possibility that surface oil film formed. And the discontinuous raised grains can effectively increase the friction force between the battery piece and the battery piece, and finally reduce the slipping phenomenon at the end of the assembly. The distance between adjacent waves of the wave layer is 0.5-2 mm. The great interval in wave line layer is favorable to exhausting smoothly, can guarantee to form exhaust passage between POE glued membrane and battery piece, glass, the busbar when high temperature melting evacuation, ensures that the air in the subassembly can smoothly discharge, reduces because of the not good bubble of producing of exhaust and the possibility of delaminating. The pattern depth of the frosted layer is 50-150 mu m. The gap between the frosting layer and the ripple layer 3 is larger, more air is introduced, and the adhesion phenomenon is finally reduced.

Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are merely examples and that many changes and modifications may be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims.

Claims

1. The utility model provides a raised grain form knurling POE glued membrane, includes glued membrane layer (1), its characterized in that: embossing structures with different shapes and depths are arranged on two surfaces of the adhesive film layer (1); one surface of the adhesive film layer (1) is provided with a wavy layer (2); and a frosting layer is arranged on the other side of the adhesive film layer (1).

2. The embossed POE film with raised grain shape as claimed in claim 1, wherein: the pattern depth of the wave pattern layer (2) is 50-200 mu m.

3. The embossed POE film with raised grain shape as claimed in claim 1, wherein: the wave-shaped layer (2) is a discontinuous wave-shaped formed by salient points.

4. The embossed POE film with raised patterns as claimed in claim 3, wherein: the salient points are inverted pyramid, hemispheric, conical, polygonal prism and polygonal frustum pyramid.

5. The embossed POE film with raised grain shape as claimed in claim 1, wherein: the space between adjacent waves of the wave layer (2) is 0.5-2 mm.

6. The embossed POE film with raised grain shape as claimed in claim 1, wherein: the pattern depth of the frosted layer is 50-150 mu m.

7. The embossed POE film with raised patterns as claimed in any one of claims 1-6, wherein: the thickness of the adhesive film layer (1) is 0.45-0.9 mm.