申请人:Kao Corporation
公开号:EP2857454A1
公开(公告)日:2015-04-08
A method for producing an injection-molded article of a poly lactic acid resin composition, including filling a melt-kneaded product of a polylactic acid resin composition containing a polylactic acid resin, a plasticizer containing a polyoxyalkylene group or an oxyalkylene group, and a mold releasing agent having a melting point of from 20° to 75°C in an injection-molding machine to mold in a die, wherein the method is characterized in that the above-mentioned injection-molding machine comprises a cylinder at least a part of which has a set temperature of 200°C or higher, that the die has a surface temperature of 85°C or higher, and that the die has a surface roughness of 1.0 µm or less. Since the molded article obtained by the method of the present invention has high productivity, and further excellent surface external appearance, the molded article can be used in various industrial applications such as daily sundries, household electric appliance parts, packaging materials for household electric appliance parts, and automobile parts.
一种生产聚乳酸树脂组合物注射成型制品的方法,包括将含有聚乳酸树脂、含有聚氧亚烷基或氧亚烷基的增塑剂和熔点为20°至75°C的脱模剂的聚乳酸树脂组合物的熔融捏合产品填充到注射成型机中,在模具中成型、其中,该方法的特征在于,上述注塑机包括一个气缸,其至少一部分的设定温度为 200°C 或更高,模具的表面温度为 85°C 或更高,模具的表面粗糙度为 1.0 微米或更小。由于通过本发明的方法获得的模塑制品具有高生产率,而且表面外观极佳,因此该模塑制品可用于各种工业用途,如日用杂品、家用电器零件、家用电器零件包装材料和汽车零件。