PVB solar encapsulation film production line

PVB photovoltaic film production line

At present, the packaging forms of photovoltaic modules mainly include glass EVA backplane packaging and glass PVB glass.I willRespectively pairEVA and POEtwo typesencapsulationThe characteristics of the adhesive film were elaborated.

The photovoltaic industry is a rapidly developing emerging industry that converts solar energy into electrical energy. Among them, crystalline silicon solar cell modules are mainly used in large-scale grid connected power generation, off grid power stations, BIPV photovoltaic building integration, etc. Their encapsulation films mainly include EVA and PVB.

Advantages of PVB encapsulation film:

PVB film is mainly used for BIPV modules, with a structure ofSteel glass (ultra white) PVB battery cell PVB tempered glass (ordinary)

PVBEncapsulation filmWith EVAEncapsulation filmcomparison：

EVA belongs to thermosetting resins and undergoes cross-linking reactions; PVB is a thermoplastic resin with repeatability and no cross-linking reaction;

The domestic glass curtain wall standards explicitly state the use of PVB, and BIPV photovoltaic modules using PVB instead of EVA can achieve a longer service life.

PVB has strong adhesive properties and higher safety than EVA film;

There are many formulas for EVA, and the packaging process is difficult to control; The formula of PVB film is simple, the quality control is stable, and the shelf life is long;

PVBadhesive filmPoor fluidity can prevent the overflow of the adhesive film during the processing.

Introduction to PVB Photovoltaic Packaging Adhesive Film Production Line