| 摘要 |
The present invention relates to the use, as water vapour barrier, of a film, of a textile or of a layer of material P, said material P comprising, or even consisting of, at least one copolymer A which is a polyamide of PAXY/XAIS Mn+1/n type or of PAZ/XAISMn+1/n type. It also relates to a construction element comprising a film, a textile or a layer of said material P and a construction material. |
