| abstract |
PROBLEM TO BE SOLVED: To provide water resistance, moisture permeability, air permeability and bacteria permeation prevention property, excellent mechanical strength, and to maintain water resistance, breathability and moisture permeability when an external force is applied. To provide excellent sheets. SOLUTION: This sheet is made of a porous film made of a thermoplastic resin having micropores, wherein the thermoplastic resin contains one or more polyolefins having a molecular chain length of 2850 nm or more. A sheet characterized by containing not less than% by weight. |