PVB solar packaging film production line

At present, the packaging forms of photovoltaic modules mainly include glass EVA backboard packaging and glass PVB glass packaging. I will explain the characteristics of EVA and POE packaging films separately.

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

Advantages of PVB packaging film:

PVB film is mainly used for BIPV components, with a structure of tempered glass (ultra white) - PVB battery cells - PVB tempered glass (ordinary)

Comparison between PVB packaging film and EVA packaging film:

EVA belongs to thermosetting resins and undergoes cross-linking reactions; PVB belongs to thermoplastic resin, which has repeatability and no cross-linking reaction;

The domestic regulations for glass curtain walls clearly state the use of PVB, and the use of PVB instead of EVA in BIPV photovoltaic modules 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;

The flowability of PVB film is poor, which can prevent the film from overflowing during the processing.

Introduction to PVB Photovoltaic Packaging Adhesive Film Production Line