Imflux Inc.

The Procter Gamble Company

Gary Francis Schiller

Gene Michael Altonen

Ralph Edwin Neufarth

Charles John Berg, Jr

Jr Berg Charles John

Ralph Edward Neufarth

John Moncrief Layman

Rainer Scharrenberg

Jr Charles John Berg

A low constant pressure injection molding machine forms molded parts by injecting molten thermoplastic material into a mold cavity at low substantially constant pressures of 6,000 psi and less. As a result, the low constant pressure injection molding machine includes a mold formed of easily machineable material that is less costly and faster to manufacture than typical injection molds.

Apparatus for injection molding at low constant pressure

A low constant pressure injection molding machine forms molded parts by injecting molten thermoplastic material into a mold cavity at low constant pressures of 6,000 psi and lower. As a result, the low constant pressure injection molding machine includes a mold formed of easily machineable material that is less costly and faster to manufacture than typical injection molds.

Non-naturally balanced feed system for an injection molding apparatus

Disclosed herein is a method of injection molding at low, substantially constant melt pressures. Embodiments of the disclosed method now make possible a method of injection molding that is more energy&#x2014;and cost&#x2014;effective than conventional high-velocity injection molding processes. Embodiments of the disclosed method surprisingly allow for the filling of a mold cavity at low melt pressure without undesirable premature hardening of the thermoplastic material in the mold cavity and without the need for maintaining a constant temperature or heated mold cavity. Heretofore, it would not have been expected that a constant pressure method could be performed at low pressure without such premature hardening of the thermoplastic material when using an unheated mold cavity or cooled mold cavity.

Method for injection molding at low, substantially constant pressure

A melt pressure regulating mechanism for an injection molding apparatus having a melt holder for pressurizing molten plastic prior to injection into a mold, the molten plastic having a melt pressure, and an injection element for advancing the molten plastic from the melt holder through a nozzle and into the mold, the melt pressure regulating mechanism comprising a pressure regulating device, comprising at least one of a fluid pressure regulating valve and a pressure relief valve.

Alternative pressure control for an injection molding apparatus

Alternative pressure control for a low constant pressure injection molding apparatus

Growing community of inventors

Asheboro, NC, United States of America

Gary Francis Schiller