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| Number | Title | Issue Date |
| 8033819 | Mold and molding method A mold includes a gate communicating with the entire perimeter of a cavity serving as a space configured to form a molded article. A self-curable molding material with flowability is fed into the perimeter of the cavity through the gate; hence, the mold has a small ... | 10/11/2011 |
| 7963762 | Injection molding apparatus having a valve pin coupling An injection molding apparatus is disclosed having an actuated part that is movable in forward and rearward directions with a coupling part attached thereto having a spring coupling and a magnetic coupling. A valve pin for opening and closing a mold gate is coupled ... | 06/21/2011 |
| 7824175 | Injection molding anti-drool nozzle A shutoff nozzle body and valve assembly operative to reduce molten plastic resin drool when the nozzle body is separated from the mold or runner system. The apparatus includes a porting system that shuts off the flow of resin through the sprue plunger of the valve ... | 11/02/2010 |
| 7614871 | Rotary valve assembly for an injection nozzle A rotary valve assembly for an injection unit is provided, having a valve body, defining a melt channel for a working fluid. At least one end cap is mounted to the valve body, the valve body and the at least one end cap cooperatively defining a valve seat intersecti... | 11/10/2009 |
| 7547208 | Individual cavity shut-off valve for an injection molding apparatus An injection molding apparatus includes a first nozzle having a first nozzle melt channel in fluid communication with a manifold melt channel, and a second nozzle having a second nozzle melt channel in fluid communication with the first nozzle melt channel. A nozzle... | 06/16/2009 |
| 7527493 | Precise control non-return valve An improved precise control non-return valve assembly which is mounted on the front end of a helical rotating plasticating screw of an injection molding machine or the like that is surrounded by a heated elongated barrel and end-cap that forms a distribution chamber... | 05/05/2009 |
| 7455515 | Nozzle and apparatus for injection molding A sprue bar nozzle assembly for controlling flow of melt through conduits of a mold assembly for injection molding comprises a sprue bar extension and nozzle, the sprue bar extension comprising means for adjusting the overall length of the sprue bar nozzle assembly ... | 11/25/2008 |
| 7442033 | Injection mold An exemplary injection mold includes a first mold, a second mold, and a trimming member. The first mold and the second mold cooperatively define a cavity therein, for forming a molded article. A runner is defined in the second mold and communicated with the cavity, ... | 10/28/2008 |
| 7416402 | Sprue bushing anti-drool device An anti-drool mechanism suitable for use in an injection molding system is provided herein. An injection molding machine includes a retractable machine nozzle for injecting a melt stream into a manifold. Between the machine nozzle and the manifold is an anti-drool m... | 08/26/2008 |
| 7404713 | Inlet nozzle for hot runner system A shutoff valve mechanism for a plastic injection molding system and process. The shutoff valve mechanism is positioned between the nozzle of the injection molding machine and the hot runner manifold. Force applied by the machine nozzle moves an inner body member in... | 07/29/2008 |
| 7399172 | Apparatus for vacuum forming an elastomeric tire A vacuum forming apparatus and process for its use in forming a transport tire from an elastomeric material that includes a mold having a cavity or annular area wherein a transport tire core of plies, belt and beads is laid-up on a mandrel located within the mold. T... | 07/15/2008 |
| 7396227 | Hot runner sprue When a molding machine nozzle is separated from a nozzle touch surface of a hot runner sprue, application of external pressure on resin in a resin supply passage is stopped. At this time, back pressure of resin in the resin supply passage that is received by a seal ... | 07/08/2008 |
| 7393198 | Molding-system viscous-drag sensor A molding system having a melt pathway configured to convey a molding material. The molding system includes a viscous-drag sensor having: (i) a pathway blockage, and (ii) an actuator. The viscous-drag sensor is interactable with the molding material. The pathway blo... | 07/01/2008 |
| 7393489 | Mold die for molding chip array, molding equipment including the same, and method for molding chip array Provided are a mold die for molding a chip array, molding equipment including such a mold die and a molding method utilizing such molding equipment. The mold die provides for the selective injection of mold resin through a corner gate controlled by a gate block wher... | 07/01/2008 |
| 7377769 | Discharge apparatus for two-stage injection molding machine A discharge apparatus for a two-stage injection molding machine, includes a check shaft seat having a runner, and disposed between a feeding portion and an injection portion of the two-stage injection molding machine, for allowing a plastic material in the feeding p... | 05/27/2008 |
| 7374419 | Gating structure for mold A gating structure (13) for molding connects with a mold cavity (300). The gating structure includes a first gate (100), a second gate (200), an ejector sleeve (400) and an ejector pin (500). The second gate connects with th... | 05/20/2008 |
| 7371063 | Injection molding nozzle In a hot channel injection molding nozzle comprising a nozzle body including a mass flow channel for a melt to be injected into a mold, wherein the nozzle body has a nozzle outlet opening at one end and an inlet opening disposed at one side of the other end of the n... | 05/13/2008 |
| 7367797 | Needle valve for filling a mold with an organic material in the liquid state The valve includes: a body in which is formed a flow passage for the material to be molded having a constriction bounded on its upstream side by a change of section forming a seat, and a needle mounted in the body ... | 05/06/2008 |
| 7364131 | Non-return valve for use in a molding system The present invention relates to a non-return valve that can be configured for use anywhere along a molding material flow path in a molding system. The non-return valve of the present invention includes an improved means to restrict the backflow of melt therethrough... | 04/29/2008 |
| 7354264 | Method and system for controlling product flow on a food product molding machine A manifold for a food product molding machine, which balances the flow and pressure of the food product over a wide fill area. The invention further relates to a feed system for a food product molding machine which has a multiple plunger configuration which increase... | 04/08/2008 |
| 7329112 | Injection molding system for injection molding a plurality of materials An injection molding system for injection molding a plurality of molten materials into a mold cavity includes a nozzle, a drop tip supported by the nozzle, and a central bore extending through the nozzle and drop tip. The injection molding system also includes a fir... | 02/12/2008 |
| 7326379 | Apparatus and method for producing soap cake An apparatus for producing a soap cake comprising a mold which has a cavity of prescribed shape, a feed passage for feeding molten soap to the cavity, and means for pushing molten soap remaining in the feed passage at the time of feeding molten soap to the cavity to... | 02/05/2008 |
| 7326047 | Apparatus for producing a tubular body In an apparatus for producing a tubular body with a membrane forming a separating wall extending across the interior of the tubular body, an injection mold is provided including a cylindrical hollow space corresponding to the outer wall of the tubular body and a pin... | 02/05/2008 |
| 7322817 | Injection molding nozzle for plastic with at least two outlet openings An injection molding nozzle (1) for plastic with at least two outlet openings (2) facing toward different sides and directed oppositely is not constructed as an open injection molding nozzle but has a respective closure needle (5) in the outlet ... | 01/29/2008 |
| RE39935 | Multi-cavity injection molding apparatus splitting melt near nozzle front Valve gated injection molding apparatus having several valve pins (62) extending through each heated nozzle (12) driven by a common actuating mechanism (70). A valve bushing (100) is seated in the front end (96) of each heated nozz... | 12/04/2007 |
| 7303384 | Device for spraying-on of especially plastic mouldings The invention relates to a device for spraying-on of especially plastic mouldings, wherein at least one mould cavity to be filled, constructed in a tool is arranged laterally next to a central nozzle body, with at least one nozzle tip arranged in and/or on the nozzl... | 12/04/2007 |
| 7296993 | Poppet valve assembly A check valve assembly for use in a plastic injection molding machine injection unit is disclosed. The check valve utilizes a free-floating poppet member which has tapered angularly spaced-apart tapered flutes on the outer surface thereof and a self-aligning spheric... | 11/20/2007 |
| 7291007 | Valve ring gate for thermoplastic and thermoset injection molding An injection molding machine having a first mold portion and a second mold portion. The second mold portion being movable relative to the first mold portion and together defining a mold cavity. The injection molding machine includes a fluid path extending through th... | 11/06/2007 |
| 7291006 | Check valve lip seal for an injection molding machine A check valve for a molding machine. The check valve has a stem portion and a ring portion movable along said stem portion between a melt channel open position and a melt channel closed position. A groove is formed in a forward face of the ring portion. The groove, ... | 11/06/2007 |
| 7291297 | Injection molding method and apparatus for continuous plastication In a reciprocating (RS) injection unit environment, as shown in FIG. 1, a controller of the injection unit is arranged to continuously rotate the screw during both conventional plasticizing operation and shot injection. In this way the RS unit is more efficie... | 11/06/2007 |
| 7287549 | Valve pin cross over nozzle for stack mould According to the present invention, a cross over nozzle (10) is provided of two parts (22,24) which, when joined, define a housing (20) having a passage (30) extending therethrough, a tapered valve seat (50) extending about the pas... | 10/30/2007 |
| 7270536 | Screw tip and molding system apparatus A screw tip for use in a molding system apparatus is disclosed. The screw tip includes a connection section and screw tip head section. The screw tip head houses an entry port, or entry ports, an accumulation chamber, and a check valve chamber. A check valve is prov... | 09/18/2007 |
| 7270537 | Non-coaxial injection molding valve flow control In an injection molding machine having upstream and downstream channels communicating with each other for delivering fluid material to one or more mold cavities, apparatus for controlling delivery of the melt material from the channels to the one or more mold caviti... | 09/18/2007 |
| 7267534 | Methods for manufacturing foam material including systems with pressure restriction element The invention provides systems, methods, and articles useful in the production of foams, and, in particular microcellular foams. The systems include a restriction element that reduces the backflow of polymer melt in an extruder while polymeric material is injected i... | 09/11/2007 |
| 7258824 | Method for controlling the injection process and injector unit The invention relates to an injector unit and a method for the control of the injection process into the cavities of injection moulding tools. The novel solution permits the injection of thin-walled injection moulding pieces (76, 77), with both electrically- ... | 08/21/2007 |
| 7252501 | Nozzle and apparatus for injection molding A nozzle controls flow of melt in injection molding equipment by passive actuation with opening and closing of a mold assembly. The nozzle comprises a valve pin having a pin passage therethrough movably supported within a nozzle passage and a contact arm transverse ... | 08/07/2007 |
| 7252500 | Check valve assembly for injection molding apparatus An injection molding apparatus which includes a check valve assembly mounted at the forward end of a feed-screw, the valve assembly having forward and rearward valve seat surfaces which co-act in a first position to allow a plasticized polymeric material to enter an... | 08/07/2007 |
| 7244118 | Hot runner nozzle and manifold seal An injection molding apparatus includes combined sealing elements located between a nozzle head of an injection molding nozzle and a mold plate. The sealing elements are arranged so that they force the nozzle head toward an outlet surface of a manifold and provide a... | 07/17/2007 |
| 7244117 | Method for molding resin member and injection molding apparatus An injection molding apparatus used comprises a molten resin injector 15 for injecting a molten resin, and a die 12 connected to the molten resin injector and communicating with the molten resin injector so that the molten resin is injected into the di... | 07/17/2007 |
| 7241132 | Backflow prevention device for in-line screw injection molding machine A screw tip is provided in front of a screw with a shaft interposed therebetween, and a check ring is fitted around the shaft. The check ring is separated from a front end portion of the screw when the screw is rotated in a forward direction. The check ring contacts... | 07/10/2007 |
