Patent ID: 6759357
Filing Date: 2004-07-06
Classification: B32B,D01F,D04H,Y10T

Abstract:
A spunbonded non-woven fabric made of fibers which comprise a polypropylene resin composition comprising 99.995-99.7% by weight of a polypropylene resin and 0.005-0.3% by weight of a lubricant, said lubricant comprising 70 to 100% by weight of a vinylidene fluoride/hexafluoropropylene copolymer and 0 to 30% by weight of one or more inorganic compounds, the said fibers having fiber finenesses in the range from 0.8 to 2.8 denier, wherein the said fabric has an average friction factor (MIU) of 0.1 to 0.3, a thickness uniformity of not higher than 0.8, a waterproof performance of at least 60 mm H2O and a gas permeability of not higher than 480 ml/cm2/sec.