Non-naturally balanced feed system for an injection molding apparatus

摘要

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.

主权项

1. A non-naturally balanced feed system for an injection mold of an injection molding apparatus, the injection mold having a plurality of mold cavities, the plurality of mold cavities receiving molten plastic at a substantially constant viscosity, the non-naturally balanced feed system comprising:
wherein the feed system maintains a balance of 90% or greater; a hot runner having a first feed channel that terminates at a first mold cavity in the plurality of mold cavities and a second feed channel that terminates at a second mold cavity in the plurality of mold cavities; a gate for receiving molten plastic, the gate being in fluid communication with one of the first and second feed channels; and wherein a temperature of molten plastic flowing through the first feed channel is different than a temperature of molten plastic flowing through the second feed channel.