Biconstituent polypropylene/polyethylene fibers

Details Biconstituent polypropylene/polyethylene fibers Biconstituent polypropylene/polyethylene fibers

D - Textiles, Paper

01

F

18/619

D01F 6/46 (2006.01) D01F 8/06 (2006.01)

Patent

CA 1296498

ABSTRACT Biconstituent fibers consist essentially of polypropylene as a continuous phase having distributed therein 20 to 45 weight percent of linear low density polyethylene (LLDPE) fibrils as a dispersed phase arrayed in a substantially omni-directional splayed manner. The LLDPE has a melt flow rate of 12 to 120 g/10 mins (ASTM) and preferably a density of 0.92 to 0.94 g/cm3. The preferred alkylene comonomers of the LLDPE have 4 to 8 carbon atoms, especially 1-octene in an amount of 5 to 10 percent. Fibers of deniers below 30, preferably below 15, can be obtained and hav- improved tenacity and hand as compared to polypropylene fibers. 35,451C-F

547252

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