Polymer article and method for producing polymer article

摘要

Provided are a polymer article excellent in mechanical strength, toughness, and stretchability and a production method of the polymer article. The polymer article of the present invention is formed of a polymer material and is a polymer blank or a formed polymer body. The polymer article of the present invention has a crystallinity of not less than 50% but less than 90% and a tensile strain at fracture of not less than 60%. A method for producing a polymer article of the present invention includes: a heating step of heating the polymer material to a temperature of not lower than (Tm−70)° C. but lower than Tm(° C.) where Tm is the melting point (° C.) of the polymer material; and a compression step of cooling the polymer material heated in the heating step and compressing the polymer material in the course of the cooling to obtain a polymer article having a crystallinity of not less than 50% but less than 90% and a tensile strain at fracture of not less than 60%.

主权项

1. A method for producing, a polymer article, which is a polymer blank or a formed polymer body, using a polymer material, the method comprising:
a heating step of heating a polymer molding product, which is formed of the polymer material and has a shape corresponding to a desired shape of the polymer article, to a temperature of not lower than (Tm−70)° C. but lower than (Tm)° C. where Tm is the melting point (° C.) of the polymer material; and a compression step of cooling the polymer molding product heated in the heating step and compressing the polymer molding product in the course of the cooling to obtain the polymer article, the polymer article having a crystallinity of not less than 50% but less than 90% and as tensile strain at fracture of not less than 60%.