Method for producing abrasive non-woven cloth
AssigneeN.R. Spuntech Industries Ltd.
InventorsYuval Berenstein, Michael Shvartzman, Nachmi Segal
Life of this patent
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Abstract
A method for producing abrasive non-woven cloth includes forming a non-woven web of fibers including a first layer adjacent to a first surface of the web containing at least about 5% by weight of thermoplastic fibers. The web is patterned to generate raised regions and lowered regions in the first surface, and then heat treated to cause at least part of the thermoplastic fibers to form nodules, thereby imparting abrasive properties to at least the raised regions of the first surface. The non-woven web preferably includes a second layer adjacent to a second surface of the web made up primarily of fibers which do not form nodules under the heat treatment.
Claims15
A method for producing abrasive non-woven cloth comprising:
- (a) forming a non-woven web of fibers including at least
- a first layer adjacent to a first surface of the web containing at least about 5% by weight of thermoplastic fibers;
- (b) processing the web by use of water jets so as,
- (i) to cause water entanglement of the fibers to form a cloth, and
- (ii) to generate a pattern of raised regions and lowered regions in said first surface;
- and
- (c) heating said cloth sufficiently;
- (i) to dry the water entangled cloth, and
- (ii) to cause at least part of said thermoplastic fibers to undergo changes in physical morphology, thereby imparting abrasive properties to at least said raised regions of said first surface.
Dependencies are inferred from the claim text.