Film for construction and film combination

B - Operations – Transporting – 32 – B

Patent

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Details

B32B 9/02 (2006.01) E04B 1/66 (2006.01)

Patent

CA 2699432

The invention illustrates and describes a sheet material (1) for the building sector, having at least one functional layer (2) and, if appropriate, at least one further layer, in particular a carrier layer and/or reinforcing layer (3), the functional layer (2) having a resistance to water-vapour diffusion (Sd value) which is dependent on the ambient humidity. According to the invention, it is provided that the functional layer (2) has at least one material (4) which can be obtained from a renewable raw material, in particular at least one polymer based on a renewable raw material.

La présente invention a pour objet un film (1) pour le secteur de la construction, doté d'au moins une couche fonctionnelle (2) et, le cas échéant, d'au moins une autre couche, en particulier d'une couche de support et/ou d'une couche de renforcement (3), la couche fonctionnelle (2) présentant une résistance à la diffusion de vapeur d'eau (valeur Sd) dépendant de l'humidité ambiante. Selon l'invention, il est prévu que la couche fonctionnelle (2) comporte au moins un matériau (4) pouvant être obtenu à partir d'une matière première renouvelable, en particulier au moins un polymère à base d'une matière première renouvelable.

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