Laminating breathable waterproof fabric and its manufacturing method

摘要

The present invention relates to a laminated moisture-permeable waterproof foam excellent in water pressure, moisture permeability, abrasion resistance, peel strength and elasticity and a manufacturing method thereof.;The present invention forms a reinforcing film layer by coating and drying a hydrophilic polyurethane resin composition to a thickness of 3 ~ 5㎛ on a release paper, water-in-oil dispersion (W / O) emulsion type polyurethane resin on the formed reinforcing film layer The composition is coated with a thickness of 15 to 25 μm and then dried in multiple stages to form a dry porous film layer. The formed film layer and the fabric is dot-bonded using a polyurethane adhesive and an embossing roll to prepare a laminated moisture-permeable waterproof fabric having a three-layer structure.;Laminating moisture-permeable waterproof foam of the present invention is a three-layer structure of the reinforcing film layer-dry porous film layer-fabric layer, the water pressure is 3.000 ~ 6.000 mm H ₂ O, water vapor transmission rate is 11.000 ~ 14.00g / ㎡ 24hr, peel strength is 1.000 ~ 1.200g / ㎝, wear resistance has the property that the film layer is completely destroyed at the rotational speed of more than 4.500 when measuring KSK-0540.