| 摘要 |
PROBLEM TO BE SOLVED: To provide a porous film/nonwoven fabric composite sheet which exhibits high moisture permeability, high tear strength, ample bulkiness, superior pliability and excellent feel as well as a method for manufacturing a porous film/nonwoven fabric composite sheet. SOLUTION: The method for manufacturing the porous film/nonwoven fabric composite sheet comprises the steps to stretch a composite sheet obtained by laminating a non-elastic nonwoven fabric on one side or both sides of a film formed of a resin composition containing 25 to 70 wt.% of a polyolefin resin and 75 to 30 wt.% of an inorganic filler, in an orthogonal direction with a mechanical axial direction by a gear stretching process and make the composite sheet porous. The porous film/nonwoven fabric composite sheet has 400 kg/mm or above of tear strength in the mechanical axial direction, 3,000 g/m<2> /24 hr or above of moisture permeability, 500"/100 cc or below of air permeability and 1,700 mmAq or above of hydraulic pressure resistance. In addition, the porous film/nonwoven fabric composite sheet has a thickness of 150 to 250μm and an amount added of 30 to 60 g/m<2> .
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