Flexible, tear resistant composite sheet material and a...

Details Flexible, tear resistant composite sheet material and a... Flexible, tear resistant composite sheet material and a...

D - Textiles, Paper

04

H

117/123

D04H 1/56 (2006.01)

Patent

CA 1338204

A flexible tear resistance composite sheet material is disclosed comprising a web of thermoplastic microfibers with from 35 to 80 percent by weight of staple fibers homogeneously dispersed throughout the web. The composite is subjected to a sufficient quantity of heat and pressure such that the thermoplastic microfibers at least partially melt and compact into a contiguous sheet with the intact staple fibers being dispersed therein. Located throughout the sheet are a plurality of voids which act as tear stops. The resulting material has a void volume of about 33 to about 55 percent and a machine direction slit trapezoidal tear resistance greater than or equal to 1.7 kg per 100 g/m2 equivalent basis weight. Also disclosed herein is a process for making the composite sheet material.

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