Patent ID: 9586713
Date: 2017-03-07
CPC Classifications: B29B,B29C,B29D,B29K,B65D,Y10T

Claim:
1. A preform for the production of plastic containers in a stretch-blow-molding process, the preform comprising: an elongated preform body having a closed longitudinal end and an opposite longitudinal end connected to a neck section having a pour opening, the neck section having an outside wall with a fastening means for clamping of a closing part equipped with corresponding engagement means; a rotating flange at a transition from the preform body to the neck section, wherein at least a portion of the rotating flange is annular and radially extends above an outside wall of the preform body; and a peripheral annular groove, which is bound by the flange and in a direction of the fastening means by an outer collar, wherein the outer collar extends obliquely from a base of the annular groove to the outside wall of the neck section, which forms a circumferential inner collar, and wherein at least a portion of the inner collar is annular on an inside wall of the neck section, and wherein the inner collar in the direction of the preform body extends axially above the annular groove and into an inside wall of the preform body.