BIODEGRADABLE BLOWN FILM AND ITS MANUFACTURING METHOD

摘要: PROBLEM TO BE SOLVED: To provide a film of high strength by investigating specific raw material resin and its molding condition. SOLUTION: This biodegradable blown has breaking not less than 45 MPa in both length width directions, the ratio is higher 1.5, it prepared an aliphatic polyester copolymer which glass transition temperature 0°C, difference (Tm-Tc) melting point, Tm, measured differential scanning calorimeter with raising at constant rate, crystallization temperature, Tc, lowering rate from melt condition larger 50°C, flow test 190°C load 2.16 kg, based on JIS K 7210 8 g/10 minutes. COPYRIGHT: (C)2004,JPO