| 摘要 |
PURPOSE:To obtain a porous film having excellent moisture permeability, tear strength, etc., and suitable for clothing such as paper diaper, etc., or medical supplies, etc., by adding a specific amount of an inorganic filler, etc., to a resin composed mainly of a low-density linear polyethylene and forming the composition under melting. CONSTITUTION:(A) 15-69.5(wt)% resin composed mainly of a low-density linear polyethylene having an MI of 0.1-5g/10min is compounded with (B) 30-80% inorganic filler having an average particle diameter of <=30mu (e.g. calcium carbonate, silica, etc.) and (C) 0.5-5% one or more components selected from (C1) a fatty acid amide (e.g. stearic acid amide), (C2) liquid paraffin having a specific gravity of 0.875-0.945, a boiling point of >=360 deg.C, a freezing point of <=20 deg.C and a flash point of >=150 deg.C and (C3) a sorbitan fatty acid ester-type surfactant (e.g. sorbitan monolaurate). The obtained composition is formed under melting to obtain a film, which is drawn along at least one direction at a draw ratio of 1.1-5. |
