Patent ID: 9023264
Filing Date: 2015-05-05
Classification: B29C,B29K,B29L,B60K,B65D

Abstract:
1. A process for the production of an article enclosing at least one built-in fitment component wherein the article is in the form of a hollow body of thermoplastic material, comprising: a) extruding at least one preform in web or tube form of plastic material between opened portions of a mold tool forming a cavity, said at least one preform having an inside wall; b) placing at least one built-in fitment component to be enclosed by the article between the portions of the mold tool, said at least one built-in fitment component including a foot element having a stepped configuration which forms a stepped contact surface which contacts said inside wall of said at least one preform, said stepped configuration including at least one through opening through the stepped configuration and into the fitment component, wherein the foot element has a concave surface within the stepped configuration arranged to guide the plastic material to flow through said at least one through opening and an undercut region facing away from said inside wall of said at least one preform, said undercut region comprising a concave surface; c) closing the mold tool portions around the at least one preform and the at least one built-in fitment component; d) shaping the at least one preform within the cavity enclosed by the tool to form an external configuration of at least a portion of the article; and e) pressing the built-in fitment component during or directly after the shaping operation against the inside wall of the at least one preform while said at least one preform is still plastic in the first heat so that the plastic material of the at least one preform is guided into said at least one through opening by said concave surface and flows through said at least one through opening of the foot element and forms a head without aids to restrain the flow of plastic material of the at least one preform, wherein said head is larger than a portion of said at least one through opening and fills at least a portion of said undercut region, which positively lockingly joins the fitment component to the at least one preform.