Patent ID: 8784957
Filing Date: 2014-07-22
Classification: B29B,B29C,B29K,B29L,B65D,Y10T

Abstract:
1. A flat polyester resin container comprising polyester resin and obtained by a two-stage blow molding of a polyester resin, wherein the flatness ratio, which is the ratio of a major axis to a minor axis of a cross section parallel to the bottom of the container, is not less than 1.3, the wall thickness ratio of a maximum wall thickness to a minimum wall thickness of a body of the container is not more than 1.6, a difference in elongation between a maximally stretched portion and a minimally stretched portion of the body of the container in a tensile test at 95° C. is not more than 150%, the crystallinity of the body of the container is not less than 30%, and a difference in TMA non-load change between a maximally stretched portion and a minimally stretched portion of the body of the container at 75° C. and 100° C. is not more than 500 μm, wherein the flat polyester resin container is obtained by a process comprising: