WATERPROOF WATER-VAPOR-PERMEABLE LAMINATED STRUCTURE AND APPLICATIONS OF THE SAME

摘要

A waterproof water-vapor-permeable laminated structure (3) obtained by extrusion-laminating a thermoplastic resin layer (2) on a porous base material (1). This laminated structure (3) is free from pin holes and has a good waterproof property and a feeling of the porous base material. The thermoplastic resin layer (2) to be employed in the laminated structure (3) is selected to have a melt viscosity of 5 x 10<4> poise (measurement conditions: load = 10 kgf, nozzle diameter = 1 mm, nozzle length = 1 mm: JIS K 7311, 10) at a temperature lower than an extrusion temperature by 20 DEG C. The laminated structure (3) is suitable for use as a medical waterproof fabric, an inner bag of a coverlet and the like products.