EVA Encapsulating Film

[Firmenlogo-Bild] EVA Encapsulating Film

chemical blowing agents | organic peroxide masterbatch | eva encapsulating film

Overview of Zebra-flow Masterbatches for the production of EVA encapsulate films for solar cell applications

Among other products Zebra-flow produces Masterbatches for the production of EVA encapsulate films with different additive packages. This additive Masterbatches offer the following advantages over the pure additives.

	Safe to handle
	Easy to process, no gel formation
	Carrier resign with high VA and high MFI (both values > 30)
	Easy to dose (with every standard masterbatch dosing unit)
	Different Additive combination available
	Customised formulations available

This table shows the standard formulations available

	Peroxide	Heat and UV Stabilising	Silan package
Zebra-flow T177	X	--	---
Zebra-flow T179	X	X	X
Zebra-flow T181	---	---	X

Function of each additive:

Peroxide

Peroxides are required to stabilise the film mechanical and thermal. When the film is produced (extruded) it is important to ensure that the mass temperature of the film does not exceed 100°C to avoid cross linking of the film. Such a pre-crosslink would make the film unusable for the final application

Heat and UV stabilising

To ensure long term stability of the EVA film an extra stabilising of the film is required. Zebra-flow T179 contains a combination of peroxide, stabiliser and silan (see below) and has proven to give excellent dispersion of all additives in the film.

Silan

A good adhesion between the EVA film and the glass surface is vital for a long time stability of the solar cell. This adhesion is greatly improved by the silan package.