Method and apparatus for molding plastic materials with a...

Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface

Reexamination Certificate

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C425S191000

Reexamination Certificate

active

07108824

ABSTRACT:
An apparatus and method for molding plastic materials is provided comprising a mold having a first mold section (12) and a second mold section (14) with a mold cavity (16) disposed in between. A first gate design is provided by at least one first gate design mold member (40), and a second gate design is provided by at least one second gate design mold member. The first and second gate design mold members are removably attachable to, and interchangeable on, at least one of the first or the second mold sections (12, 14) to change from the first gate design to the second gate design.

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“Antec 1996 Plastics: Plastics—Racing into the Future, vol. 1: Processing: Effects of gate design on the processing latitudes of engineering thermoplastics”, 1996 Society of Plastics Engineers; XP-002273645; p. 2, paragraph 1; p. 4, paragraph 6-8, figures 1-3.
Thienel P., et al; “Oberflachenfehler An Thermoplastischen Spritzgiessteilen, Teil 1”; Plastverarbeiter, Zechner Und Huethig Verlag GMBH. Speyer/Rhein, DE, vol. 46, No. 4, Apr. 1, 1995, pp. 92, 95-97, XP000510880 p. 95, paragraph 3; p. 96, paragraph 4.
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