MULTILAYER POLYAMIDE FILM FOR REAR PANEL OF PHOTOVOLTAIC MODULE

摘要

The use of a multilayer polyamide film as a rear protective sheet in a photovoltaic module. Also, a photovoltaic module containing photovoltaic cells protected by an encapsulant, a front protective layer, and a rear protective layer, wherein the rear protective layer is formed by a multilayer polyamide film including: a CA layer including, as predominant polymer, at least one polyamide A exhibiting a mean number of carbon atoms per nitrogen atom of between 4 and 8, a CB layer including: (a) as predominant polymer, at least one polyamide B exhibiting a mean number of carbon atoms per nitrogen atom of between 8 and 15, the polyamide(s) B exhibiting a mean number of carbon atoms per nitrogen atom which is strictly greater than the mean number of carbon atoms per nitrogen atom of the polyamide(s) A, and (b) at least one additive for combating UV radiation.

主权项

1. A rear protective sheet in a photovoltaic module comprising photovoltaic cells covered with an encapsulant, wherein said rear protective sheet is a multilayer film, wherein said multilayer film comprises:
a CA layer comprising, as predominant polymer, at least one polyamide A exhibiting a mean number of carbon atoms per nitrogen atom of between 4 and 8, a CB layer comprising: (a) as predominant polymer, at least one polyamide B exhibiting a mean number of carbon atoms per nitrogen atom of between 8 and 15, the polyamide(s) B exhibiting a mean number of carbon atoms per nitrogen atom which is strictly greater than the mean number of carbon atoms per nitrogen atom of the polyamide(s) A, and (b) at least one additive for combating UV radiation, the CB layer configured to be positioned between the encapsulant and the CA layer.