Patent ID: 9090010
Filing Date: 2015-07-28
Classification: B29C

Abstract:
1. A neck ring for defining at least a portion of a neck portion of a preform, the neck ring comprising: a molding surface defining a portion of a molding cavity for defining the at least a portion of the neck portion of the preform; a venting structure for evacuating the air, in use, from the molding cavity, the venting structure including: a primary vent area; a secondary vent area; a pocket groove in fluid communication with both the primary vent area and the secondary vent area; wherein with the neck ring in a standard molding configuration, the primary vent area is dimensioned for (i) allowing the passage of the evacuated air from the molding cavity into the pocket groove and (ii) not allowing any substantial amount of the molding material for passing therethrough; wherein with the neck ring in a vent cleaning configuration, the primary vent area is dimensioned for allowing the molding material for passing into it; and wherein in said vent cleaning configuration, the secondary vent area is dimensioned for (i) allowance of the passage of the evacuated air from the primary vent area and (ii) not allowing any substantial amount of the molding, material for passing therethrough.