Heat resistant blow molded containers

Abstract

A stretch-blow-molded container obtained by biaxially stretching and blow-molding a thermoplastic polyester and which exhibits heat resistance or heat resistance and pressure resistance to withstand sterilization by heating at the time of hot filling. The stretch-blow-molded container is obtained by stretch-blow-molding a preform formed of a thermoplastic polyester as a chief component, wherein the body portion, bottom portion and shoulder portion are stretch-oriented, and at least the central portion in the bottom has an endothermic peak (B) due to the extinction of pseudo crystals in a temperature region higher than a glass transition point of the polyester but lower than a temperature at which the crystals of the polyester start melting as measured by using a differential scanning calorimeter (DSC).

Dependencies are inferred from the claim text.