STR photocap solar encapsulation material from STR in Spain / EU, the technical manual for proffesional use of encapsulation material in solarpanels:
Str photocap technical manual
There is a alternativ american procduced product called EVA from dupond
STR and EVA are same kind of product, i tryed both of them. There a different types of both, difference is temperatur needed to meelt The encapsulation material and how long time to make vacum etc.