Process for forming a container by stretch blow molding and container formed thereby

A process for forming a container by stretching and blow-molding a preform within a mold cavity comprising the steps of: (i) introducing a preform into the mold cavity and stretching the preform with a stretch rod; (ii) increasing the pressure within the preform so that the preform expands within the mold cavity in a blowing step; (iii) at least one inwardly moving mold section within the mold cavity so that the expanding preform is deformed by the inwardly moving mold section; wherein the glass transition temperature (Tg) of the preform material is at least 10° C. below the temperature of the walls of the mold cavity.