Multi-layer co-extrusion type online hot-pressing laminated solar backboard and preparation method thereof

A solar back sheet, multi-layer co-extrusion technology, applied in the field of solar back sheets, can solve the problems of impact resistance, antistatic performance, and chemical properties of heat discoloration to be improved, so as to achieve environmental stress crack resistance and support performance, excellent impact resistance

Pending Publication Date: 2020-10-30
安徽省长荣新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing solar backsheets are usually designed with a three-layer structure (PVDF / PET / PVDF), but the impact resistance, antistatic performance, thermal discoloration resistance and other structural and chemical properties of this traditional solar backsheet need to be improved

Method used

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  • Multi-layer co-extrusion type online hot-pressing laminated solar backboard and preparation method thereof
  • Multi-layer co-extrusion type online hot-pressing laminated solar backboard and preparation method thereof

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Embodiment Construction

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] Referring to the accompanying drawings, a multi-layer co-extruded solar backplane made of a weather-resistant film bonded on-line by hot pressing, including:

[0022] The solar backboard is made of three layers of polyolefin co-extrusion film 10 and weather-resistant film 20 combined by online thermal compression, and the thickness of the solar backboard is 350 μm;

[0023] The three-layer polyolefin co-extruded film 10 is sequentially composed of a cop...

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Abstract

The invention relates to a solar backboard formed by multi-layer co-extrusion and online hot-pressing lamination of a weather-proof film. The solar backboard is formed by online hot-pressing lamination of a three-layer polyolefin co-extrusion film and the weather-proof film, wherein the thickness of the solar backboard is 350 [mu]m; the three-layer polyolefin co-extrusion film sequentially comprises a copolymerized PP functional layer, a polyolefin supporting layer and a bonding functional layer from outside to inside, and the thickness of the three-layer polyolefin co-extrusion film is 300 [mu]m; the weather-proof film is a PVF or PVDF film, and the thickness of the weather-proof film is 50 [mu]m; and the three-layer polyolefin co-extrusion film and the weather-proof film are extruded andattached synchronously on line, and the weather-proof film is located on the outer side of the copolymerized PP functional layer. The solar backboard has excellent impact resistance, long-term heat resistance, heat discoloration resistance, antistatic performance and dimensional stability, is free of layering and cracking, and achieves environmental stress cracking resistance and supporting performance of the supporting layer.

Description

technical field [0001] The invention relates to the technical field of solar backplanes, in particular to a multi-layer co-extruded on-line hot-press lamination solar backplane and a preparation method thereof. Background technique [0002] The solar back sheet is also called solar cell back sheet, solar cell back sheet film, photovoltaic back sheet, photovoltaic back sheet film. Since solar cells are installed outdoors, problems such as product aging and low power generation efficiency often occur due to high temperature, ultraviolet rays, wind and rain, etc. The solar backsheet can be used as a layer of protective film to wrap the inner side of the solar cell, which greatly prolongs the service life of the solar cell. It is widely used in solar cell photovoltaic modules and is located on the back of the solar cell panel to protect and support the cell. It has reliable insulation, water resistance and aging resistance. Existing solar backsheets are usually designed with a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B7/12B32B27/08B32B27/20B32B27/30B32B27/32B29D7/01
CPCB29D7/01B32B7/12B32B27/08B32B27/20B32B27/304B32B27/32B32B27/327B32B2250/24B32B2307/21B32B2307/306B32B2307/558B32B2307/734B32B2457/12
Inventor 惠振京石亚东
Owner 安徽省长荣新材料科技有限公司
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