Production process for KPF structure single-face coating backboard

Abstract

The invention discloses a production process for a KPF structure single-face coating backboard. The process includes the following steps that (1) one surface of a PET material is coated with high-performance polyurethane glue with the thickness being 10 microns after low-temperature plasma treatment is conducted on the surface of the PET material and the PET material is delivered into an oven to be dried; (2) a PVDF film with the thickness being 12 microns is compounded to the glue face coated with the glue of the PET material; (3) after the material is rolled, low-temperature plasma treatment is conducted on the other surface of the PET material, the other surface is coated with the high-performance polyurethane glue with the thickness being 10 microns, and the material is delivered into the oven to be dried; (4) modified PE paint with the thickness being 4 microns is compounded to the other glue face coated with the glue of the PET material; (5) after being rolled, the material is cured in the oven for 40 hours at the 40 DEG C so that the backboard can be manufactured. According to the production process, manufacturing cost is reduced, a compounding working procedure is omitted, the rate of finished products is effectively increased, cost is saved, and a manufacturing method is simple.

Description

technical field [0001] The invention relates to a production process of a KPF structure single-sided coating backboard. Background technique [0002] The insulated backsheet for solar photovoltaic cells (referred to as solar insulated backsheet) is located on the back of the solar panel to protect and support the battery, and must have reliable insulation, water resistance and aging resistance. [0003] The KPF structure solar insulating back sheet of the existing scheme is generally composed of four layers, the outer layer is made of PVDF fluorine film, and the inner layer is PET. The laminated layer with EVA is directly coated with PE coating, and the PVDF fluorine film and PET are usually connected by adhesive. Usually, the outer weathering layer is PVDF material with a thickness of 25um, the middle reinforcement layer is PET with a thickness of 250um, the inner weathering layer is PE coating, and the bonding layer is polyurethane glue with a thickness of 10um. These pro...

AI Technical Summary

Problems solved by technology

Usually, the outer weathering layer is PVDF material with a thickness of 25um, the middle reinforcement layer is PET with a thickness of 250um, the inner weathering layer is PE coating, and the bonding layer is polyurethane glue with a thickness of 10um. These products have reliable electrical Insulation, resistance to water vapor penetration, and excellent resistance to hydrolysis and UV rays, but these products are expensive to produce