Patent ID: 6268302
Filing Date: 2001-07-31
Classification: B32B,D04H,Y10T

Abstract:
A soft and strong nonwoven spunbond polyolefin fabric comprising:a first web of spunbond fibers produced from polyolefin polymer having a melt flow rate of at least 50 grams/10 minutes according to ASTM D-1239-90b condition L and a viscosity of at least 2500 dynes.sec/cm.sup.2 and;a second web of spunbond fibers produced from a polyolefin polymer having a melt flow rate of below 50 grams/10 minutes according to ASTM D-1239-90b condition L;wherein said webs are bonded together to form a laminate having a strength at least 10% greater than the same laminate made when said first web polymer melt flow rate does not exceed 50 grams/10 minutes according to ASTM D-1239-90b condition L.