Injection mold cavity and method for making the same

Details Injection mold cavity and method for making the same Injection mold cavity and method for making the same

1998-03-18

1999-09-14

Tentoni, Leo B.

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With product ejector

249 661, 249134, 425437, B29C 3340, B29C 3346, B29C 4543

Patent

active

059520183

ABSTRACT:
An injection mold cavity and a method for fabricating an injection mold cavity. The mold cavity includes a tear-drop shaped channel and an ejection valve simultaneously formed with the fabrication of the mold cavity using a layer-additive process. The ejection valve is movable within the mold cavity and actuatable by a flow of gas through the channel to eject a molded part from the injection mold cavity. The mold cavity, including the ejection valve, is made of the same material.

REFERENCES:
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patent: 4521367 (1985-06-01), Underwood
patent: 5273707 (1993-12-01), Carroll
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patent: 5490966 (1996-02-01), Peterson et al.
patent: 5641448 (1997-06-01), Yeung et al.
patent: 5700406 (1997-12-01), Menhennett et al.
patent: 5807519 (1998-09-01), Suzuki et al.
Dupont Selection Guide, by E.I. duPont de Nemours and Company (Undated).

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