Heat-sealable filter material with biodegradable polymers

Details Heat-sealable filter material with biodegradable polymers Heat-sealable filter material with biodegradable polymers

B - Operations, Transporting

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D

B01D 39/16 (2006.01) A47J 31/08 (2006.01) B65D 65/46 (2006.01) B65D 81/00 (2006.01) B65D 81/34 (2006.01) C08L 77/12 (2006.01) D04H 13/00 (2006.01) D21H 27/08 (2006.01) D21H 11/12 (2006.01) D21H 13/20 (2006.01) D21H 13/24 (2006.01) D21H 13/26 (2006.01) D21H 27/38 (2006.01)

Patent

CA 2289739

The invention relates to a filter material comprising at least two layers, where at least one layer contains natural fibres and at least one layer contains biodegradable thermoplastic fibres. Said thermoplastic fibres are chosen from among the group of aliphatic or partly aromatic polyester amides, aliphatic or partly aromatic polyesters, aliphatic or partly aromatic polyester urethanes, and aliphatic or aliphatic-aromatic polyester carbonates.

L'invention concerne un matériau filtrant comprenant au moins deux couches, au moins une couche contenant des fibres naturelles et au moins une couche contenant des fibres thermoplastiques biodégradables. Ces dernières sont choisies dans le groupe des polyamides d'ester aliphatiques ou partiellement aromatiques, polyesters aliphatiques ou partiellement aromatiques, polyesteruréthanes aliphatiques ou partiellement aromatiques, et carbonates de polyester aliphatiques ou aliphatiques-aromatiques.

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