METHOD FOR MANUFACTURING VAPOR-PERMEABLE AND WATERPROOF SHEET

摘要

PURPOSE: A production method of a breathable waterproof fabric is provided to have excellent water repellency through prevention of a capillary phenomenon or slipping over between laminated fabrics and to have comfortable sensation. CONSTITUTION: A production method of a breathable waterproof fabric includes the following steps. A nano-fiber web layer with thickness of 2-50 micro meters is formed laminating nano fibers with a size of 50-1000 nano meters. A mixed solution, in which a good solvent which melts nano fibers and a non solvent or a vacant solvent are mixed to form a bonding between the nano fibers at least after completion of laminating the nano fibers, is supplied to the nano fiber web layer. The nano fiber web layer in which the mixed solution is supplied is dried applying heat.