Search International and National Patent Collections

1. (WO2017035179) PLASTIC ARTICLE FORMING APPARATUSES AND METHODS FOR CONTROLLING MELT FLOW IN REAL TIME USING ADDITIVES

Pub. No.:    WO/2017/035179    International Application No.:    PCT/US2016/048276
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Thu Aug 25 01:59:59 CEST 2016
IPC: B29C 45/18
B29C 45/76
B29K 491/00
Applicants: IMFLUX INC.
Inventors: ALTONEN, Gene, Michael
WATSON, Randall, Alan
LAYMAN, John, Moncrief
NELTNER, Andrew, Eric
DODD, Michael, Thomas
Title: PLASTIC ARTICLE FORMING APPARATUSES AND METHODS FOR CONTROLLING MELT FLOW IN REAL TIME USING ADDITIVES
Abstract:
A process of forming molded articles using an injection molding apparatus (10) is provided. The process includes providing a thermoplastic material to the injection molding apparatus. The thermoplastic material is heated such that the thermoplastic material is in a molten state. The molten thermoplastic material (24) is injected into at least one mold cavity (32) of the injection molding apparatus using an injection element (30). Melt pressure of the thermoplastic material filling the at least one mold cavity (32) is monitored using a sensor (52). The sensor provides a signal indicative of melt pressure to a controller (50). The controller (50) controls introduction of a non-reactive additive (51) to the thermoplastic material thereby changing a viscosity of the molten thermoplastic material based on the signal. A molded article is formed by reducing a mold temperature of the thermoplastic material within the at least one mold cavity.