Patent ID: 8382926

Claim:
A method for the production of a tear propagation-resistant textile sheet comprising: providing a textile sheet made of yarns, fibers or filaments, which are formed from at least two elementary filaments which, when viewed in cross-section, have an orange segment or pie slice configuration with alternating first and second polymer segments comprising at least one polymer pair, wherein said first polymer segments comprise a first polymer of said polymer pair and said second polymer segments comprise a second polymer of said polymer pair that is different from said first polymer; and subjecting said textile sheet to a compression heat treatment, wherein at least a portion of said first polymer segments melt and permeate at least a portion of said second polymer segments so as to form a substantially non-adhesive bond between the first and second polymer segments without the use of an adhesive binding agent between said polymer segments and said sheet has a surface weight of 20 to 500 g/m 2 ; wherein said polymer pair is selected from the group consisting of: polypropylene/polyethylene, polyamide 6/polyethylene, polyethylene terephthalate/polyethylene, polyamide 6/polypropylene, polyethylene terephthalate/polypropylene, and combinations thereof and wherein said polymer pair comprise a higher melting polymer and a lower melting polymer and said polymer pairs have a weight ratio of higher melting polymer to lower melting polymer of 75:25 to 70:30.