Method for producing abrasive non-woven cloth

Details Method for producing abrasive non-woven cloth Method for producing abrasive non-woven cloth

B - Operations, Transporting

29

C

B29C 51/00 (2006.01) B29C 49/00 (2006.01) B29D 24/00 (2006.01) B29D 29/00 (2006.01) B29D 29/06 (2006.01) B29D 29/08 (2006.01) D04H 13/00 (2006.01) D04H 1/46 (2006.01) D04H 3/00 (2006.01) D04H 3/10 (2006.01) D04H 5/00 (2006.01) D04H 5/02 (2006.01)

Patent

CA 2544232

A method for producing abrasive non-woven cloth includes forming a non-woven web of fibers (10) including a first layer (12) adjacent to a first surface of the web (14) containing at least about 5% by weight of thermoplastic fibers. The web (10) is patterned to generate raised regions (16) and lowered regions (18) in the first surface (14), and then heat treated to cause at least part of the thermoplastic fibers to form nodules (20), thereby imparting abrasive properties to at least the raised regions (16) of the first surface (14). The non-woven web preferably includes a second layer (60) adjacent to a second surface (62) of the web (14) made up primarily of fibers which do not form nodules under the heat treatment.

Cette invention se rapporte à un procédé servant à produire un tissu non tissé abrasif et consistant à former une bande non tissée de fibres contenant une première couche adjacente à une première surface de la bande contenant au moins 5% en poids environ de fibres thermoplastiques. La bande est texturée pour former des zones surélevées et des zones abaissées dans la première surface, puis elle est traitée thermiquement pour amener au moins une partie des fibres thermoplastiques à former des nodules, conférant ainsi des propriétés abrasives au moins aux zones surélevées de la première surface. La bande non tissée comporte de préférence une seconde couche adjacente à une seconde surface de la bande, constituée essentiellement de fibres qui ne forment pas de nodules après traitement thermique.

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