Heat-resistant sheet comprising lactic acid polymer and method for producing molder product

摘要: PURPOSE: To obtain the heat-resistant sheet improved in insufficient heat resistance which is defect of lactic acid polymer having excellent biodegradability, capable being subjected to molding processes such as a vacuum-molding process, an air- pressure process and vacuum air-pressure release property from heated molds mold duplicativity, further provide method for producing molded product suitable general moldings produced sheet, especially food containers, blister-packaging materials, hot- filing etc. CONSTITUTION: The characteristics lowest storage elastic modulus E' 80-900kg/cm at temperature lower by 20 deg.C than melting point test relating dependency dynamic viscoelasticity comprises preliminarily crystallizing annealing comprising consisting mainly polylactic and/or monoaxially or diaxially stretch-orienting sheet. And recrystallized within range crystallization Tc below 2-600sec.