Preform and a mold stack for producing the preform

  • US 9,358,710 B2
  • Filed: 11/03/2011
  • Issued: 06/07/2016
  • Est. Priority Date: 12/09/2010
  • Status: Active Grant
First Claim
Patent Images

1. An injection molded preform suitable for subsequent blow-molding into a final-shaped container, the preform comprising:

  • a neck portion;

    a gate portion having a substantially constant thickness; and

    a body portion extending between said neck portion and said gate portion;

    wherein the gate portion is implemented as either a conical form or a semi-spherical shape extending between the body portion and a lower-most extremity; and

    the gate portion further comprises an upwardly-bound region of a semi-spherical or conical shape extends upwardly from the lower-most extremity towards the neck portion, whole of the upwardly-bound region extending in a direction towards the neck portion;

    wherein the upwardly-bound region includes an outer planar surface of a gate vestige at an apex thereofwherein the upwardly-bound region is blow moldable to form an upwardly-bound container region of the container.

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