CN213534113U

CN213534113U - T style of calligraphy knurling POE glued membrane

Info

Publication number: CN213534113U
Application number: CN202021604697.0U
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: 2021-06-25
Anticipated expiration: 2030-08-05

Abstract

The utility model relates to the technical field of POE glue films, in particular to a T-shaped embossing POE glue film, which comprises a glue film layer, wherein an upper frosting layer and a lower frosting layer are respectively arranged at two sides of the glue film layer, the upper frosting layer is provided with a T-shaped embossing group, and the lower frosting layer is provided with embossing structures with different shapes and depths; the thickness of the upper abrasive layer is smaller than that of the lower abrasive layer. After the structure is adopted, the utility model discloses following beneficial effect has: the gap between one surface containing the T-shaped embossing layer and the other surface of the frosting layer is larger, so that the air storage capacity is increased, and the bonding possibility between adhesive films is reduced; the friction force of the contact surface can be increased, and the slipping phenomenon of the component end can be greatly reduced. In addition, can guarantee to form exhaust passage between POE glued membrane and battery piece, glass, the busbar when high temperature melting evacuation, ensure that the air in the subassembly can smoothly be discharged, reduce because of the bad bubble of production of exhausting and the possibility of delaminating.

Description

T style of calligraphy knurling POE glued membrane

Technical Field

The utility model relates to a POE glued membrane technical field, especially a T style of calligraphy 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.

The ethylene-vinyl acetate copolymer (EVA) adhesive film is a polymer adhesive film which is relatively widely applied at present, but the EVA adhesive film has poor weather resistance, is easy to degrade and discolor after long-term use, influences the light transmittance and the adhesion, and reduces the output efficiency of the assembly. Polyolefin materials represented by ethylene-alpha-olefin copolymers (POE) have excellent light transmittance, electrical insulation, water vapor barrier properties, and excellent weather resistance and PID resistance, and are considered as ideal materials for replacing EVA encapsulating materials.

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. Because the compatibility of the conventional liquid auxiliary agent and POE is poor, the auxiliary agent is easy to separate out and is adsorbed on the surface of the glue film to cause the slipping phenomenon of the assembly end. In the subsequent lamination process, air flow is caused by vacuumizing in a high-temperature molten state, so that residual gas among the battery piece, the glass, the bus bar and the adhesive film is easy to generate bubbles or delaminate.

The utility model discloses a chinese utility model patent CN 206030694U discloses a compound glued membrane of two-sided knurling POE elasticity, and it includes transparent POE layer, fine layer of glass, POE tie coat and PET rete in proper order, transparent POE layer and POE tie coat are two-sided knurling structure, transparent POE layer surface knurling structure is dull polish line, POE bonding layer surface knurling structure is the protruding decorative pattern of polygon.

Disclosure of Invention

The utility model discloses the technical problem that needs to solve provides a smooth and easy POE glued membrane of glued membrane exhaust when adjacent glued membrane is not adhered, the module end does not skid, laminate.

In order to solve the technical problem, the T-shaped embossed POE adhesive film comprises an adhesive film layer, wherein an upper abrasive layer and a lower abrasive layer are respectively arranged on two sides of the adhesive film layer, the upper abrasive layer is provided with a T-shaped embossing group, and the lower abrasive layer is provided with embossing structures with different shapes and depths; the thickness of the upper abrasive layer is smaller than that of the lower abrasive layer.

Preferably, the T-shaped embossing groups are uniformly distributed in the upper frosting layer.

Preferably, the pattern depth of the T-shaped embossing group is 50-200 μm.

Preferably, the thickness of the upper sanding layer is 30-50 μm.

Preferably, the thickness of the lower abrasive layer is 50 to 150 μm.

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

Preferably, the transverse and vertical embossing shapes of the T-shaped embossing group are one or two of lentil shape, rectangle and rhombus.

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

1. the two sides of the adhesive film are not consistent in embossing depth, and the gap between one side of the T-shaped embossing layer and the other side of the frosting layer is large, 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 T-shaped embossing layer of the adhesive film fixes the position of the battery piece by the T-shaped patterns, so that the slipping phenomenon at the end of the automatic assembly is reduced; the glued membrane dull polish structure not only can store the auxiliary agent that separates out owing to reasonable degree of depth design, also can increase the frictional force of contact surface, and the phenomenon of skidding of subassembly end also can reduce greatly.

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 the utility model discloses a T style of calligraphy knurling POE glued membrane's knurling structural schematic diagram.

Fig. 2 is a side view of the T-shaped embossed POE adhesive film of the present invention.

In the figure: 1 is a film layer, 2 is a T-shaped embossing group, 3 is an upper frosting layer, and 4 is a lower frosting layer.

Detailed Description

As shown in fig. 1 and fig. 2, the utility model discloses a T style of calligraphy knurling POE glued membrane, including glue film layer 1, glue film layer's thickness is 0.45-0.9mm, glue film layer 1 both sides are provided with dull polish layer 3 and dull polish layer 4 down respectively, go up dull polish layer 3 and be provided with T style of calligraphy knurling group 2. The T-shaped embossing group 2 comprises transverse embossing and vertical embossing which are connected into a T shape, the transverse embossing and the vertical embossing of the T-shaped embossing group are in one or two shapes of a lentil shape, a rectangle and a rhombus, and the lentil shape is adopted in the embodiment. The T-shaped embossing groups are uniformly distributed in the upper frosting layer 3, and the pattern depth is 50-200 mu m. The special structural design of the T-shaped embossing layer of the adhesive film fixes the position of the battery piece by the T-shaped patterns, so that the slipping phenomenon at the end of the automatic assembly is reduced; the glued membrane dull polish structure not only can store the auxiliary agent that separates out owing to reasonable degree of depth design, also can increase the frictional force of contact surface, and the phenomenon of skidding of subassembly end also can reduce greatly.

In the patent application, embossing structures with different shapes and depths are arranged on the lower frosting layer; the thickness of the upper abrasive layer 3 is smaller than that of the lower abrasive layer 4. The method comprises the following specific steps: the thickness of the upper frosting layer is 30-50 mu m, and the thickness of the lower frosting layer is 50-150 mu m. Like this 1 two sides of glued membrane layer knurling degree of depth inconsistent, contain the T style of calligraphy knurling layer one side and the frosting between the another side of layer the space great, increased the air storage capacity, reduced the possibility that bonds between the glued membrane.

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 T style of calligraphy knurling POE glued membrane, includes the glued membrane layer, its characterized in that: an upper frosting layer and a lower frosting layer are respectively arranged on two sides of the adhesive film layer, the upper frosting layer is provided with a T-shaped embossing group, and the lower frosting layer is provided with embossing structures with different shapes and depths; the thickness of the upper abrasive layer is smaller than that of the lower abrasive layer.

2. The T-shaped embossed POE adhesive film as recited in claim 1, wherein: the T-shaped embossing groups are uniformly distributed in the upper frosting layer.

3. The T-shaped embossed POE adhesive film as recited in claim 1, wherein: the pattern depth of the T-shaped embossing group is 50-200 mu m.

4. The T-shaped embossed POE adhesive film as recited in claim 1, wherein: the thickness of the upper frosting layer is 30-50 μm.

5. The T-shaped embossed POE adhesive film as claimed in claim 4, wherein: the thickness of the lower abrasive layer is 50-150 mu m.

6. The T-shaped embossed POE adhesive film as recited in claim 1, wherein: the thickness of the adhesive film layer is 0.45-0.9 mm.

7. The T-shaped embossed POE adhesive film as claimed in any one of claims 1 to 6, wherein: the transverse and vertical embossing shapes of the T-shaped embossing group are one or two of a lentil shape, a rectangle shape and a rhombus shape.