Patent application number | Description | Published |
20110311676 | EDGE-GATED NOZZLE - An injection molding system is disclosed that includes a hot runner manifold for providing a melt stream of moldable material to at least one hot runner nozzle that is in fluid communication with one or more mold cavities via at least one injection manifold disposed proximate a downstream end of the nozzle. The at least one injection manifold has a substantially U-shape with at least one mold cavity being disposed between opposing arm segments thereof. Each mold cavity is fed by a pair of nozzle seals, wherein one of the pair of nozzle seals extends inwardly from one of the opposing arm segments while the other of the pair of nozzle seals extends inwardly from the other of the opposing arm segments for directing a melt stream into the mold cavity. | 12-22-2011 |
20120070532 | COINJECTION HOT RUNNER INJECTION MOLDING SYSTEM - A coinjection molding apparatus is disclosed that provides a skin material melt stream and a core material melt stream to a nozzle. A nozzle tip of the nozzle defines a central skin material melt passage for receiving the skin material melt stream, an annular core material melt passage for receiving the core material melt stream and an annular outer layer melt passage, which receives a portion of the skin material melt stream from the central skin material melt passage. The skin material melt stream from the central skin material melt passage forms an inner layer of a molded article, the core material melt stream from the core material melt passage forms a core layer of the molded article, and the skin material melt stream from the outer layer melt passage forms an outer layer of the molded article, wherein the three melt streams combine prior to entering a mold cavity. | 03-22-2012 |
20130230617 | Valve Bushing for an Injection Molding Apparatus - A valve bushing having an actuator portion and a pin guiding component is disclosed. The actuator portion has a cup-shaped body with a stepped bore that defines a chamber in which a piston for opening and closing a valve gate disposed, and also defines a transfer bore extending through a base portion of the cup-shaped body. A stand-off member elevates the cup-shaped body from the manifold. The pin guiding component defines a sealing bore that extends between a body portion and a boss that extends rearward from the body portion. The boss is received in the transfer bore of the cup-shaped body to define a thermal transfer area between the pin guiding component and the actuator portion that is spaced apart from the manifold, and the actuator portion is located relative to the pin guiding component by engagement between the pin guiding component and the stand-off member. | 09-05-2013 |
20130266679 | Coinjection Hot Runner Injection Molding System - A coinjection molding apparatus is disclosed that provides first and second material melt streams to a nozzle. The nozzle defines a first material melt passage for receiving the first material melt stream, a second material melt passage for receiving the second material melt stream and an outer layer melt passage, which receives a portion of the first material melt stream from the first material melt passage. The first material melt stream from the first material melt passage forms an inner layer of a molded article, the second material melt stream from the second material melt passage forms a core layer of the molded article, and the first material melt stream from the outer layer melt passage forms an outer layer of the molded article, wherein the three melt streams combine prior to entering a mold cavity. | 10-10-2013 |
20130302458 | Coinjection Hot Runner Injection Molding System - A coinjection molding apparatus is disclosed that provides first and second material melt streams to a nozzle. The nozzle defines a first material melt channel for receiving the first material melt stream and a second material melt channel for receiving the second material melt stream. The nozzle includes a sleeve and a nozzle tip having a tip divider. The sleeve is disposed within a longitudinal bore of the nozzle to divide the nozzle bore into the first material melt channel and the second material melt channel. The nozzle tip is coupled to a downstream end of the nozzle and defines a first material melt passage for receiving the first material melt stream from the first material melt channel of the nozzle and a second material melt passage for receiving the second material melt stream from the second material melt channel of the nozzle. The tip divider includes an upstream segment that is engaged with a downstream end of the sleeve to provide fluid communication between the first material melt passage of the nozzle tip and the first material melt channel of the nozzle. | 11-14-2013 |
20140248385 | Coinjection Hot Runner Injection Molding System - A coinjection molding apparatus is disclosed that provides first and second material melt streams to a nozzle. The nozzle defines a first material melt passage for receiving the first material melt stream, a second material melt passage for receiving the second material melt stream and an outer layer melt passage, which receives a portion of the first material melt stream from the first material melt passage. The first material melt stream from the first material melt passage forms an inner layer of a molded article, the second material melt stream from the second material melt passage forms a core layer of the molded article, and the first material melt stream from the outer layer melt passage forms an outer layer of the molded article, wherein the three melt streams combine prior to entering a mold cavity. | 09-04-2014 |