| 摘要 |
PROBLEM TO BE SOLVED: To provide a porous sheet using an aliphatic polyester resin as a raw material resin and excellent in moldability to an original sheet, opening property of micropores by drawing and flexibility. SOLUTION: The porous sheet is produced by melting-molding a resin composition comprising an aliphatic polyester resin, a filler and a plasticizer to give an original sheet and drawing the original sheet at least uniaxially. The filler is contained in the resin composition in an amount of 20 to 300 pts.wt. based on 100 pts.wt. aliphatic polyester resin. The plasticizer is a compound having two or more ester groups in the molecule and having an average number of moles of ethylene oxide added therein of 3 to 9. The plasticizer is contained in the resin composition in an amount of 1 to 100 pts.wt. based on 100 pts.wt. aliphatic polyester resin. COPYRIGHT: (C)2007,JPO&INPIT
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