| abstract |
The polylactic acid-based film or sheet of the present invention is a resin film or sheet containing polylactic acid (A), and the following formula (1) ΔHc '= ΔHm-ΔHc (1) [wherein ΔHc is measured by DSC, (J / g) accompanying the crystallization in the film or sheet after the film formation, and? Hm is the heat absorption amount (J / g) accompanying the subsequent melting) of the crystallized portion during film formation, Is 10 J / g or more, and the tear strength is 2.5 N / mm or more in both the flow direction (MD direction) and the width direction (TD direction). According to this polylactic acid-based resin film or sheet, there is no melting or deformation of the film or sheet even at a high temperature exceeding 100 ° C, and when the film or sheet is wound in a roll shape during the production or processing of the film or sheet. No breaks or tears occur on the back. |