Multi-venting molding apparatus
AssigneeJPE Co., Ltd.
InventorKarl Berdan
Life of this patent
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Abstract
A multiple limbed component is molded in a gas injection mold with a corresponding number of outlets. The outlets are regulated by valves that are operated sequentially to permit progressive expulsion of the excess material in the mold cavity.
Claims5
A method of injection molding an article in a mold cavity having an inlet and plurality of outlets comprising the steps of injecting moldable material into said cavity through the inlet, closing said inlet to inhibit movement of material therethrough, injecting gas under pressure into said cavity to expel a portion of said moldable material therefrom through said outlets, closing said outlets during injection of gas into said cavity to pressurize said cavity and opening said outlets, one at a different time than another to permit expulsion of said material through each of said outlets at varying times so that said moldable material is expelled in a controlled progressive manner, and ejecting said article from said cavity.
Dependencies are inferred from the claim text.