METHODS FOR MANUFACTURING OF COMPOSITE FABRICS WITH REINFORCING DISCRETE POLYMERIC REGIONS (VERSIONS) Russian patent published in 2007 - IPC B29C43/28 B29C43/46 

FIELD: manufacture of composite fabrics including substrate with one or more reinforcing discrete polymeric regions arranged on surface or inside composite fabric.

SUBSTANCE: method involves applying melted non-elastomeric thermoplastic composition onto intermediate roll having outer surface comprising a number of slots, one or a number of said slots having complicated slots defined by a plurality of cells and comprising island site formed in the same complicated slot; removing melted non-elastomeric thermoplastic composition from outer surface of intermediate roll, with portion of melted non-elastomeric thermoplastic composition getting into one or a number of slots to remain there after separation of melted non-elastomeric thermoplastic composition from outer surface of intermediate roll; transferring at least a portion of melted non-elastomeric thermoplastic composition from one or a number of slots onto first main surface of substrate upon coming into contact with outer surface of intermediate roll; separating substrate from intermediate roll. After separation of substrate from intermediate roll, one or a number of discrete polymeric regions comprising non-elastomeric thermoplastic composition remain on first main surface of substrate. In case substrate has porous, fibrous or like structure, a portion of non-elastomeric thermoplastic composition may impregnate said substrate and/or encapsulate substrate fibers.

EFFECT: increased efficiency in application of discrete inserts and elimination of additional wastes which might occur in case of unreliable fixing of inserts, precise alignment or arrangement of inserts on fabric requiring utilization of adhesives or binding substances.

6 cl, 22 dwg