Patent ID: 8663761
Filing Date: 2014-03-04
Classification: B29B,B29C,B29K,Y10T

Abstract:
1. A plastic preform having a base body and a thread region arranged on the base body, wherein the thread region is formed in one piece with the base body, and a ring-shaped section which completely surrounds a portion of a geometrical longitudinal axis of the preform and which is arranged underneath the thread region and extends outwards in a radial direction (R) of the plastic preform and is formed in one piece with the base body, wherein the ring-shaped section has a first surface facing the base body and a second surface facing the thread region, wherein at least one optically perceivable marking is arranged on the surface facing the base body and that the ring-shaped section completely surrounds the plastic preform and is formed without continuous recesses in the longitudinal direction (L) of the plastic preform, wherein parts of the ring-shaped section are unpolished and wherein the at least one marking is polished.