MOISTURE VAPOR PERMEABLE FILM AND METHOD FOR MANUFACTURING SAME

摘要

Provided is a moisture vapor permeable film which has excellent liquid permeability resistance while maintaining air permeability, moisture vapor permeability, mechanical strength and utility. This moisture vapor permeable film is composed of a resin composition which comprises a polyethylene resin composition (A) that includes a polyethylene resin with a melting peak temperature of 130 to 150°C and a density of 0.940 to 0.970 g/cm3, an inorganic filler (B) and a styrene-based elastomer (C), 1 to 20 parts by mass of the styrene-based elastomer (C) being added with respect to 100 parts by mass of the total of the polyethylene resin composition (A) and the inorganic filler (B). Further, this moisture vapor permeable film has a bleeding area of less than 5%.