| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a polylactic acid resin film or sheet which does not melt or deform even at high temperatures exceeding 100°C, and furthermore, during production and machining of the film or sheet, does not cause breakage or tearing when rolled into a roll or the like. <P>SOLUTION: The polylactic acid film or sheet is a resin film or sheet containing polylactic acid (A), and contains a polyglycerol fatty acid ester and/or a polyglycerol condensed hydroxy fatty acid ester (B) in a total amount of 1-20 pts.wt. based on 100 pts.wt. of the polylactic acid (A), wherein the melting endothermic value ΔHc' in a crystallization section at the time of film-forming, which is called for by formula (1), ΔHc'=ΔHm-ΔHc (In the formula, ΔHc is the exothermic value (J/g) associated with crystallization in the heating process of the film or sheet after film-forming, and measured using DSC, ΔHm is the endothermic value (J/g) associated with the melting thereafter), is ≥10 J/g. <P>COPYRIGHT: (C)2012,JPO&INPIT |
