| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fusion-cut sealed bag having excellent characteristics such as flexibility, mechanical strength and heat resistance, and having excellent appearance of a fusion-cut sealed part and high fusion-cut sealing strength, and its manufacturing method of easily manufacturing the fusion-cut sealed bag with excellent reproducibility. <P>SOLUTION: A biaxially oriented film obtained by stretching a film comprising 100 pts.wt. polylactic acid resin comprising a polylactic acid and an aliphatic polyester at the weight ratio of 95:5 to 55:45, and 5-35 pts.wt. of a triglyceride plasticizer and having the tensile modulus of elasticity being 200-950 MPa, is laminated, and pinched between a fusion-cut blade and a blade receiver to perform the fusion-cut sealing. The breaking strength of the fusion-cut sealed part formed on the end part of the biaxially oriented film is set to be ≥10 N/10 mm width. <P>COPYRIGHT: (C)2009,JPO&INPIT |
