Including Introducing Material Under Pressure Into A Closed Mold Cavity (e.g., Injection Molding, Etc.) Patents (Class 264/297.2)
  • Patent number: 6759140
    Abstract: An injection-molded plastic part having a first thermoplastic component and a second thermoplastic component. Areas consisting of the first thermoplastic component are present at least on one surface of the injection-molded plastic part next to areas of the second thermoplastic component. The first thermoplastic component is an LCP and the second thermoplastic component is a syndiotactic polystyrene.
    Type: Grant
    Filed: October 1, 2001
    Date of Patent: July 6, 2004
    Assignee: W. C. Heraeus GmbH & Co. KG
    Inventors: Hans-Heiner Bittrich, Stefan Claus, Frank Krüger, Jan Wahode, Volker Zippmann
  • Patent number: 6735926
    Abstract: A method of manufacturing a plurality of interconnected vials with a mold. The mold includes a first slide and a second slide. The method comprises contracting the first slide and the second slide so that a plurality of cavity profiles linked together by a plurality of arms is formed. A plurality of core pins is placed within the plurality of cavity profiles so that the core pins are freestanding. A plastic fluid is injected about the plurality of core pins to form a plurality of interconnected vials. The plurality of interconnected vials are removed from the plurality of core pins. The plurality of interconnected vials are placed into a holder tray and a liquid is injected into the vials. The open ends of the vials are heat sealed in order to encapsulate the plurality of interconnected vials. The steps of heat sealing include applying heat, measuring the temperature applied, and measuring the time the heat is applied.
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: May 18, 2004
    Inventor: Kent A. Louviere
  • Patent number: 6730251
    Abstract: A method of using a multi-purpose processing apparatus for simultaneously performing an injection molding operation and a cutting/forming operation. The multi-purpose apparatus places a forming operation into unused space within the injection molding machine, thereby utilizing the already present injection molding clamping pressure to pressure form parts. The apparatus results in a method that combines the three steps of forming, cutting, and injection molding into one continuous operation performed within the injection molding machine, as well as eliminating the need for numerous pre-injection molding steps.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: May 4, 2004
    Assignee: Serigraph Inc.
    Inventors: Kurt Eschenfelder, Loren R. Johansen, Michael D. McElhatton, Michael Ruminski
  • Publication number: 20040070115
    Abstract: Disclosed is an injection molding apparatus that includes an extruder configured to produce a continuous flow of molten plastic. The injection molding apparatus also includes a plurality of mold assemblies and a delivery system that provides an uninterrupted transfer of the continuous flow of molten plastic from the extruder to the plurality of mold assemblies. The present invention also includes an process for using the injection molding apparatus that includes forcing a continuous flow of molten plastic into a delivery system and sequentially routing the continuous flow of molten plastic from the delivery system into a plurality of mold assemblies without interruption.
    Type: Application
    Filed: March 27, 2003
    Publication date: April 15, 2004
    Applicant: Palweb Corporation
    Inventors: Paul A. Kruger, Bryan R. Kirchmer
  • Patent number: 6696006
    Abstract: An injection mold is provided for injection molding an encapsulation material to encapsulate at least one integrated circuit chip. The injection mold includes at least two parts that define at least one injection circuit, and at least one blind complementary channel communicating with the injection circuit. The injection circuit includes at least one injection cavity for housing the chip, at least one transfer chamber from which the encapsulation material is injected, and at least one injection channel connecting the transfer chamber to the injection cavity. The blind complementary channel is formed between the two parts of the mold and forms at least one appendage of encapsulation material that is connected to the encapsulation material that fills the injection circuit. Also provided is a method for injection molding an encapsulation material to encapsulate at least one integrated circuit chip.
    Type: Grant
    Filed: May 22, 2001
    Date of Patent: February 24, 2004
    Assignee: STMicroelectronics S.A.
    Inventors: Jonathan Abela, Rémi Brechignac
  • Publication number: 20030227108
    Abstract: A method for producing an elongated composite that comprises the use of a cycleable molding apparatus that has (i) at least one extruder, (ii) a mold assembly carousel having an axis, inner circumference, outer circumference, and being rotateable about its axis in a substantial vertical plane and being capable of indexing a mold assembly to an injection station, cooling station, and removal station, and (iii) at least one mold assembly engaged with the outer circumference of the mold assembly carousel. Moldable resin is injected a mold assembly located about the axis of the mold assembly carousel. The mold assembly is rotated to a cooling station or cooling area and later rotated to a composite removal station, where the composite is ejected from the mold assembly.
    Type: Application
    Filed: March 6, 2003
    Publication date: December 11, 2003
    Inventor: C. Albert Okerson
  • Patent number: 6613262
    Abstract: A mold apparatus provides a movable mold module which includes movable tie rods which are extendable and retractable with respect to the movable mold module of the mold apparatus, such that the tie rods may initially be removed from a gap between the platens of the mold apparatus when the platens have been separated. Preferably, the tie rod assemblies are movably mounted to the movable carriage or module, which also moves the injection machine and movable platen along a base toward and away from the fixed platen and corresponding mold part. Additionally, the tie rods may be extended relative to the movable platen as the platen is moved toward the fixed platen, such that the tie rods engage a locking member on the fixed platen to lock the platens relative to one another during the molding process. The tie rods are rotatable via a rotational device mounted at the movable platen, to rotate the tie rods and lock the tie rods to the locking member at the fixed platen.
    Type: Grant
    Filed: October 31, 2000
    Date of Patent: September 2, 2003
    Inventor: Donald P. Arend
  • Publication number: 20030122272
    Abstract: A multi-cavity injection molding method and device, and a controller for sequentially injecting material into cavities in the injection molding device. The methods and devices are effective to reduce the clamping force needed to clamp multiple cavity molds.
    Type: Application
    Filed: January 3, 2002
    Publication date: July 3, 2003
    Applicant: Mitsubishi Heavy Industries Injection Molding Machinery, Inc.
    Inventors: Doug Smith, David Voisard
  • Patent number: 6572797
    Abstract: A method of controlling operation of an injection molding system in which at least one injection molding device successively executes an injection molding operation thereof so as to successively produce the molded product, and at least one takeout device successively takes out the molded product from the corresponding injection molding device so as to successively transfer the molded product to a subsequent-step part in which the molded product is further processed, while a monitoring device is arranged for detecting an abnormal operation in the subsequent-step part and generating an abnormal signal upon detection of the abnormal signal, the method comprising the steps of: changing an operation mode of the at least one of takeout device so as to transfer the molded disk to another part which is separate from the subsequent-step part, upon generation of the abnormal signal by the monitoring device; and extending a cycle time of the injection molding operation of the at least one injection molding device upon g
    Type: Grant
    Filed: November 1, 2000
    Date of Patent: June 3, 2003
    Assignee: Kabushiki Kaisha Meiki Seisakusho
    Inventors: Kouzou Hibi, Hideaki Shirai
  • Patent number: 6558603
    Abstract: Apparatus for producing thermoplastic injection-molded parts reinforced with long fibers, includes a compounder having two meshing screws rotating in a same direction for continuously generating a stream of melt of thermoplastic material reinforced with long fibers. Melt is alternatingly conducted to at least two piston and cylinder units for injection into at least one cavity of an injection mold at a suitable pressure. Each of the piston and cylinder units includes a cylinder and a differential piston movably received in the cylinder and dividing the cylinder into a feed chamber and an injection chamber, wherein the piston has a relatively greater piston surface, adjacent the injection chamber, and a relatively smaller piston surface, adjacent the feed chamber.
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: May 6, 2003
    Assignee: Krauss-Maffei Kunststofftechnik GmbH
    Inventors: Hans Wobbe, Bernd Klotz, Jochen Zwiesele
  • Publication number: 20030080467
    Abstract: The present invention provides for the electrochemical generation of ozone for use in “point-of-use” applications. The electrochemical ozone generators or systems of the present invention may be used to provide disinfected water, ozone-containing water, and/or ozone gas. Disinfected water may be produced by introducing ozone gas into a potable or purified water source for the purpose of disinfecting or controlling the microorganisms in the water source. Ozonated water or ozone gas may be produced and provided for various anti-microbial and cleansing applications of the consumer, such as washing food, clothing, dishes, countertops, toys, sinks, bathroom surfaces, and the like. Furthermore, the ozone generator may be used to deliver a stream of ozone-containing water for the purpose of commercial or residential point-of-use washing, disinfecting, and sterilizing medical instruments and medical equipment.
    Type: Application
    Filed: September 30, 2002
    Publication date: May 1, 2003
    Inventors: Craig C. Andrews, Oliver J. Murphy, G. Duncan Hitchens
  • Patent number: 6554656
    Abstract: A primary compact is formed as a resin article by using a single die to thereby integrally mold a connector housing, a rear holder, and a lock spacer so that the attaching directions of such parts are the same direction. In an assembling process, the connector housing is detached from the primary compact. Subsequently, the rear holder adjoining the connector housing is detached from a sub-runner. Then, a terminal slipping-off preventing piece of the rear holder is inserted into a terminal insertion opening of the connector housing from above the terminal insertion opening. Thereafter, the lock spacer adjoining the rear holder is detached from the sub-runner and inserted into a latching concave portion of the connector housing from above in such a manner as to be in a temporarily caught state. Thus, the parts are assembled into a connector.
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: April 29, 2003
    Assignee: Yazaki Corporation
    Inventors: Yuji Hatagishi, Kentaro Nagai
  • Patent number: 6555037
    Abstract: A method of continuously forming integrally molded structures includes the steps of rotating a plurality of independently movable multisection mold assemblies about a plurality of axes, successively flowing a plurality of polymerizable mixtures over surfaces of each enclosed mold cavity while selectively heating mold sections thereof in a preselected heating profile and monitoring the flowing of each mixture, the heating of the mold sections and the formation of resins therefrom. The monitored mixture flowing, the mold section heating and the formation of each resin are coordinated with each monitored axis rotation. The molded structure is removed after it has achieved structural integrity within the mold cavity, and the steps are repeated to form a multiplicity of the integrally molded structures on a continuing basis. Also, multiaxis molding apparatus for conducting the above method.
    Type: Grant
    Filed: October 19, 2000
    Date of Patent: April 29, 2003
    Inventor: LeRoy Payne
  • Patent number: 6548001
    Abstract: A method of producing molded parts from several components in plastics processing machines is described, whereby for each component plasticized plastic material is injected into cavities formed by two mold halves, and whereby a sprue element (4) is provided at least for the first component (1). The sprue element of at least the first component remains on the molded part and is molded around, entirely or partially, by the next component during one of the following working cycles.
    Type: Grant
    Filed: September 19, 2000
    Date of Patent: April 15, 2003
    Assignee: Krauss-Maffei Kunststoffechnik GmbH
    Inventor: Peter Lichtinger
  • Publication number: 20030057600
    Abstract: A device and a method for thermal treatment at a casting process, wherein objects (14,20) are formed in a casting machine (50), which comprises a divisible forming tool (10,11) with a casting space (40) enclosed therein, designed to be filled by a liquid casting material (30). The device comprises a treatment tool (1,21) comprising at least one treatment surface (3) arranged to, in its form, at least partially be similar to the casting space (40), and a treatment tool (1,21) comprises means (7) arranged to connect an object (14,20) formed in a casting space (40) to the treatment tool (1,21), and that the device is arranged to carry out thermal treatment of said object (14,20) outside the casting machine (50).
    Type: Application
    Filed: October 15, 2002
    Publication date: March 27, 2003
    Inventor: Mikael Wennberg
  • Patent number: 6536108
    Abstract: In a production apparatus (1), after rear holders (7a, 7b) and a housing body (8) are molded by molding die cavities, slides (11a, 11b) are moved apart from the housing body (8). Then, cylinders (16a, 16b) are driven to move the rear holders (7a, 7b), holders (13a, 13b) and the slides (11a, 11b) together with slide plates (14a, 14b), so that the rear holders (7a, 7b) are located in opposed relation to the housing body (8). Then, cylinders (19a, 19b) are driven to move the rear holders (7a, 7b) toward the housing body (8), thereby provisionally retaining the rear holders (7a, 7b) on the housing body (8). Therefore, the amount of movement of the slides (11a, 11b) is small, and it is not necessary to provide any space for holding the slides (11a, 11b), moved into their respective stand-by positions, and therefore the small-size design of the production apparatus can be achieved, and also the production efficiency can be enhanced.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: March 25, 2003
    Assignee: Yazaki Corporation
    Inventors: Norio Kawamura, Hiroshi Murashita, Junichi Hamamoto, Takashi Masuda, Toshimi Nakashima, Kazuhiko Hiraguchi, Kenji Takahashi
  • Patent number: 6537478
    Abstract: Homopolymers of propylene or copolymers of propylene with C214 C10-alk-1-enes, which polymers are obtainable by polymerization of the corresponding monomers using metallocene catalysts are used for producing moldings such as injection-molded articles.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: March 25, 2003
    Assignee: Basell Polyolefine GmbH
    Inventors: John Russell Grasmeder, Klaus Overthun
  • Publication number: 20030017323
    Abstract: The present invention relates to a multiple foam substrate of predetermined shape and a method of manufacturing the substrate. The substrate is a multiple foam substrate which may be manufactured by the method with a mold having first and second mold cavities. The method includes injecting a first foam into the first mold cavity sufficiently to fill the first mold cavity and storing the first foam in the first mold cavity for a predetermined time sufficient to form a substantially non-mixing surface on the first foam. The method further includes injecting a second foam into the second mold cavity and onto the non-mixing surface on the first foam sufficiently to fill the second mold cavity. The method further includes storing the second foam in the second mold cavity for a predetermined time sufficient to bond the first foam to the second foam along the non-mixing surface.
    Type: Application
    Filed: September 17, 2002
    Publication date: January 23, 2003
    Applicant: Lear Corporation
    Inventors: George B. Byma, Brian A. Cristea, Richard Muhlbacher
  • Patent number: 6503438
    Abstract: A tool structure or tool insert has a runner system which includes at least one branching runner which branches in at least two directions forming at least a first pair of branch runners for receiving laminar flowing material for the formation of a product. Each branch runner is at a position in the runner system such that it receives material having significantly similar conditions from side-to-side of a bisecting plane of that runner which bisects the cross section of at least a portion of the length of that branch runner. This material also has dissimilar conditions from side-to-side of a perpendicular plane of each branch runner which is perpendicular to the bisecting plane of that runner with the perpendicular plane of each branch runner also bisecting the cross section of the same portion of the length of each branch runner that the bisecting plane bisects.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: January 7, 2003
    Assignee: Beaumont Runner Technologies, Inc.
    Inventors: John P. Beaumont, David A. Hoffman
  • Patent number: 6495082
    Abstract: A molding apparatus and method of use thereof. The molding apparatus has a stationary mold base, and at least one moveable mold core rotatable into and out of a facing relationship with the stationary mold base. When the moveable mold core is in its closed position, it cooperates with the stationary mold base to define a mold cavity. The mold base may be shaped so as to aid in forming a part, or to hold a sheet of material onto which molding material is to be deposited so as to encapsulate the part on one or more edges or surface regions. Structure may also be encapsulated onto the surface of the material during the molding operation.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: December 17, 2002
    Assignee: Libbey-Owens-Ford Co.
    Inventors: Charles E. Ash, Gary W. Bernier, David W. Lahnala, H. Richard Voght, John H. Gillen
  • Publication number: 20020163103
    Abstract: A mold for producing a plurality of moldings has at least on introduction point for the molding material and a plurality of cavities with a shape corresponding to that of the moldings. The cavities are arranged so that each cavity, except cavities in an end or peripheral position, is connected to at least two directly adjacent cavities. A fluid casting compound of a material having a solidified hardness of not more than about 200N, defined as the force at which an 11 mm sphere of the material will shatter, is introduced into the mold, so that it essentially fills all of the cavities, and the casting compound is then solidified and removed from the mold.
    Type: Application
    Filed: February 4, 2002
    Publication date: November 7, 2002
    Applicant: Reckitt Benckiser N.V.
    Inventors: Ralf Wiedemann, Natascha Daschner, Axel Halbherr, Jacobus Simon Petrus Van Diepen, Ludwig Hertling
  • Publication number: 20020122970
    Abstract: A method for fabricating a seal-integrated separator for a fuel cell is presented, with which seals can be accurately positioned and the assembling time for the fuel cell units may be greatly reduced.
    Type: Application
    Filed: December 6, 2001
    Publication date: September 5, 2002
    Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHA
    Inventors: Masajiro Inoue, Toshihiko Suenaga, Nobuaki Kimura, Keisuke Andou
  • Publication number: 20020100994
    Abstract: A high throughput, automated process for coating ceramic monoliths used as catalytic converters that overcomes problems with coating monoliths individually in a mold. The monoliths are provided with end caps to cover the open functional ends, then loaded serially into an inlet channel leading to an extrusion chamber. As each monolith is pushed into the channel, one monolith enters the extrusion chamber, and the monolith just coated in the extrusion chamber is made to exit onto a finished part conveyor. Thereafter, the end caps are removed and cleaned for reuse on new monoliths yet to be coated.
    Type: Application
    Filed: January 30, 2001
    Publication date: August 1, 2002
    Inventor: Karel Sander
  • Patent number: 6409955
    Abstract: The present invention relates to a sprue bar assembly for use with a number of different injection molding machines. The sprue bar assembly comprises a fixed sprue bar section having a first channel through which molten material, such as a plastic resin, flows. The first channel communicates with the outlet of a source of the molten material. The sprue bar assembly further comprises an adjustable sprue bar section having a second channel through which molten material flows and a powered unit for holding the adjustable sprue bar section in contact with the fixed sprue bar section so that molten material can flow from the first channel to the second channel without leaking and for changing the length of the sprue bar assembly as needed to accommodate molds of different shutheights.
    Type: Grant
    Filed: November 29, 1999
    Date of Patent: June 25, 2002
    Assignee: Husky Injection Molding Systems Ltd.
    Inventors: Stefan Gunther Schmitt, Heinz Walter Reulecke
  • Patent number: 6372170
    Abstract: A method for manufacturing a synthetic resin hollow member wherein using a die slide injection molding machine comprising a stationary die having a series of molding portions formed lengthwise in male-female-female-male sequence, and a movable die having a series of molding portions formed lengthwise in female-male-female sequence, the manufacturing method comprising the following steps: a die clamping step; an injection step for molding two half bodies for the present cycle in a male/female combination of molding portions and joining two half bodies from preceding cycle in a combination of female molding portions; a removal step for opening the dies and removing the finished hollow member; a die sliding step for sliding the dies lengthwise a specific distance relative to each other in a reverse direction of that in the previous cycle; these steps are then repeated to manufacture one hollow member with each die sliding step.
    Type: Grant
    Filed: June 2, 1999
    Date of Patent: April 16, 2002
    Assignees: G P Daikyo Corporation, The Japan Steel Works, Ltd.
    Inventors: Michinori Nishida, Shoso Nishida
  • Patent number: 6372162
    Abstract: A method for making an oral brush body using an injection molding apparatus includes injecting polymer into a mold cavity at a pressure no greater than about 250 psi and in an amount sufficient to fill the cavity. The injection molding apparatus includes a mold that includes a cavity defining at least a portion of an oral brush body, and an injection unit in communication with the cavity and capable of injecting a polymer into the mold cavity at a pressure no greater than about 250 psi and in an amount sufficient to fill the cavity.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: April 16, 2002
    Assignee: The Gillette Company
    Inventor: Gerald S. Szczech
  • Patent number: 6365083
    Abstract: A plurality of semi-molded products (H, J, K) are formed in a slide mold (20) and slide cores (30, 30′) simultaneously in the step of primary molding. Then, the slide cores (30, 30′) are opened in the condition that the semi-molded products (H, J, K) remain in the slide mold (20) and the slide cores (30, 30′) respectively. Then, the slide mold (20) and the slide cores (30, 30′) are slid so that the semi-molded products (H, J, K) are collected into a predetermined position. Then, a molten resin is injected into joint portions of the semi-molded products (H, J, K) collected and clamped, so that the plurality of semi-molded products (H, J, K) are integrated with one another in the slide mold (20) and the slide cores (30, 30′) in the step of secondary molding to thereby obtain a molded product (S).
    Type: Grant
    Filed: November 19, 1999
    Date of Patent: April 2, 2002
    Assignee: The Japan Steel Works, Ltd.
    Inventor: Shoso Nishida
  • Patent number: 6357802
    Abstract: An air-pressure joint 1 comprising a pipe main body 2 made of a rigid thermoplastic resin and a release ring 3 made of a rigid thermoplastic resin inserted from one opening of the pipe main body, wherein the release ring includes a slip-off preventing protrusion 13 on an outer circumferential surface of its insertion site; and the pipe main body 2 includes a ring-shaped sealing portion 9 made of an elastic resin and integrally formed on an inner circumferential surface thereof, an insertion mouth pipe portion 7 made of a rigid rigid resin, coaxially disposed to abut one opening side portion of the pipe main body 2 and forming a recess groove 10 on an inner circumferential surface of an abutting portion thereof for stopping the slip-off preventing protrusion 13 of the release ring 3, and a ring-shaped connecting portion 8 made of a rigid synthetic resin and integrally molded to an outer circumferential surface of the abutting portion of this mouth pipe for connecting the insertion mouth pipe portion 7 to the p
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: March 19, 2002
    Assignees: Mikuni Plastics Co., Ltd., Daicel-Hüls, Ltd., Daicel Chemical Industries, Ltd.
    Inventors: Nobuhiro Nozato, Atsushi Inagaki, Shinichi Matsumoto, Hajime Komada, Mitsuteru Mutsuda, Masanori Hiraishi
  • Patent number: 6355197
    Abstract: At least one mold is provided having a mold cavity and a mold gate communicating with the mold cavity, an injection nozzle for feeding molten plastic material to the injection mold having a nozzle outlet in line with the mold gate, and a thin movable valve gating arrangement positioned between the mold gate and nozzle outlet having an orifice therein permitting and shutting off flow of molten plastic from the nozzle to the mold.
    Type: Grant
    Filed: August 20, 1999
    Date of Patent: March 12, 2002
    Assignee: Husky Injection Molding Systems Ltd.
    Inventors: Manfred Lausenhammer, Arnold Mai
  • Patent number: 6348171
    Abstract: A drool control apparatus having a piston disposed in a melt passage of a mold. The piston is moveable between a bypass position, where pressurised melt is permitted to flow past the piston to at least one nozzle, and a compression position, where the melt downstream of the piston is decompressed to inhibit drool at the nozzle.
    Type: Grant
    Filed: May 11, 1999
    Date of Patent: February 19, 2002
    Assignee: Mold Masters Limited
    Inventors: Neil Dewar, Denis Babin
  • Publication number: 20020005791
    Abstract: A structure of an electronic instrument having operation keys and a manufacturing method thereof, in which a dustproof and waterproof function can be secured by a simple structure, are provided. The structure of the electronic instrument having operation keys provides a cabinet providing an opening part for operation keys, the operation keys that are disposed in the opening part of the cabinet so that each of the operation keys is movable in the orthogonal direction to the front surface of the cabinet, and a resin film that covers the surface of the cabinet and the surfaces of the operation keys in the state that the resin film is not cut on the surfaces of the cabinet and the operation keys, and covers a gap formed between the cabinet and the operation keys, and gaps formed among the operation keys.
    Type: Application
    Filed: July 16, 2001
    Publication date: January 17, 2002
    Inventor: Shuichi Ono
  • Publication number: 20020002782
    Abstract: A water reservoir for a clothes pressing iron, the reservoir being composed of two plastic parts, and a method for fabricating the reservoir by: simultaneously molding the two parts of one reservoir in a first injection molding step in two impressions of the same mold; and assembling the two parts together while, in a second injection molding step, injection molding a joint of plastic material between the two parts to connect the two parts together in a fluid-tight manner, wherein the two parts are assembled together and the second injection molding step is performed before complete crystallization of the two parts.
    Type: Application
    Filed: May 17, 2001
    Publication date: January 10, 2002
    Applicant: ROWENTA Werke GmbH
    Inventors: Norbert Voss, Edgar Hipp
  • Publication number: 20010048170
    Abstract: Apparatus for producing thermoplastic injection-molded parts reinforced with long fibers, includes a compounder having two meshing screws rotating in a same direction for continuously generating a stream of melt of thermoplastic material reinforced with long fibers. Melt is alternatingly conducted to at least two piston and cylinder units for injection into at least one cavity of an injection mold at a suitable pressure. Each of the piston and cylinder units includes a cylinder and a differential piston movably received in the cylinder and dividing the cylinder into a feed chamber and an injection chamber, wherein the piston has a relatively greater piston surface, adjacent the injection chamber, and a relatively smaller piston surface, adjacent the feed chamber.
    Type: Application
    Filed: June 5, 2001
    Publication date: December 6, 2001
    Inventors: Hans Wobbe, Bernd Klotz, Jochen Zwiesele
  • Publication number: 20010045686
    Abstract: The upper and lower mold plates of a transfer molding machine are configured for one-side encapsulation of a pair of substrate mounted electronic devices having an opposite conductor-grid-array and/or bare heat sink/dissipator. A buffer member, optionally with cut-outs or apertures, may be placed between the two back-to-back substrates for protecting the grid-arrays and enabling encapsulation of devices with varying thicknesses without adjustment of the molding machine. Alternately, the upper and lower plates are configured for one-side encasement using covers of a pair of substrate mounted electronic devices having an opposite conductor-grid-array and/or bare heat sink/dissipator.
    Type: Application
    Filed: August 1, 2001
    Publication date: November 29, 2001
    Inventor: Steven G. Thummel
  • Publication number: 20010015511
    Abstract: A molding and tentatively retaining mold 10 of the invention has a plurality of molds which are relatively movable with respect to a fixed mold, and molds a housing 31 and rear holders 32 and 33, which are respectively independent, in a plurality of cavities formed in cooperation with the fixed mold. When rear holders 32 and 33 after molding are relatively moved with respect to a housing 31 by movable molds 12 and 15 and are tentatively retained, a runner 20 for a cavity for molding the housing 31 is kept connected to the housing 31 through a tunnel gate 20a. In addition, a portion 15a of the fourth movable mold 15 for forming the cavity in the housing 31 is kept fitted to the housing 31 as it was during molding.
    Type: Application
    Filed: December 20, 2000
    Publication date: August 23, 2001
    Inventors: Norio Kawamura, Hiroshi Murashita, Junich Hamamoto, Takashi Masuda, Toshimi Nakashima, Kazuhiko Hiraguchi, Kenji Takahashi
  • Publication number: 20010013672
    Abstract: A molding and tentatively retaining mold 10 of the invention has a plurality of molds which are relatively movable with respect to a fixed mold, and molds a housing 31 and rear holders 32 and 33, which are respectively independent, in a plurality of cavities formed in cooperation with the fixed mold. Diameters of runners serving as channels for the charging of a resin material into cavities of a molding and tentatively retaining mold are set for the respective cavities such that the charging of the resin material into the cavities is completed substantially at the same time.
    Type: Application
    Filed: December 20, 2000
    Publication date: August 16, 2001
    Inventors: Norio Kawamura, Hiroshi Murashita, Junich Hamamoto, Takashi Masuda, Toshimi Nakashima, Kazuhiko Hiraguchi, Kenji Takahashi
  • Patent number: 6235229
    Abstract: A multi-cavity coinjection mold having a relatively large plurality of cavities for simultaneously molding a relatively large plurality of multi-layered articles including a) a plurality of cavity groups each defining a relatively small plurality of said cavities, a single balanced hot runner for supplying said relatively small plurality of cavities with contiguous different plastics materials, and a valve for sequentially supplying desired contiguous quantities of the plastics materials from plastics material sources, common to all of said groups, to the balanced hot runner; and b) a hot runner manifold system connected to the plastic material sources to supply the plastic materials to all of the valves; and related methods.
    Type: Grant
    Filed: May 5, 1999
    Date of Patent: May 22, 2001
    Inventors: Martin H. Beck, George F. Rollend
  • Patent number: 6231805
    Abstract: There is provided a molding method for performing injection molding by using a multi-cavity hot-runner mold having a plurality of valve gates, wherein a proper holding pressure and the like are set for each cavity, a pressure holding step can be carried out, a plurality of products having an appearance free from such a defect as a sink mark can be obtained, the pressure in the cavity can be reduced by a gas pressure, and a necessary mold clamping force can be decreased. A valve for a first cavity is closed after the filling into the first cavity is finished, and a valve for a second cavity is concurrently opened to perform the filling into the second cavity. When injection is effected into each cavity in succession, a gas is injected into the filled resin, thereby to carry out a pressure holding step. The same pressure holding step is carried out for a third cavity and the succeeding cavities. As a result, a plurality of products having an appearance free from such a defect as a sink mark can be obtained.
    Type: Grant
    Filed: May 11, 1999
    Date of Patent: May 15, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takashi Yairo, Takashi Morimoto, Sunao Yamasaki, Atsushi Honjo
  • Patent number: 6210619
    Abstract: A method of molding articles includes providing a first mold having a first lens cavity surface, a reflector core surface and a second lens cavity surface. A second mold has a first lens core surface, a first reflector cavity surface, a second reflector cavity surface, and a second lens core surface. A first position is established to form a first article cavity and a second article cavity and a first joining cavity. A second position is established to form a second joining cavity, a third article cavity, and a fourth article cavity. A plastic material is placed into the first article cavity to form a lens. A plastic material is placed into the second article cavity to form a reflector. The first mold and the second mold are arranged in the first position to form the lens and the reflector. The first mold and the second mold are arranged in the second position to form the lens and the reflector. The first mold and the second mold are shuttled between the first position and the second position.
    Type: Grant
    Filed: October 19, 1998
    Date of Patent: April 3, 2001
    Assignee: Ford Motor Company
    Inventor: Dale Douglas Owens
  • Patent number: 6207087
    Abstract: Various steps in the operation of an insulated runner injection molding system are automated by computer generated responses to various sensing steps or other steps to thereby reduce the performance requirements of the system operator. In automatic response to a manual operation incident to closure of a machine gate after an end-of sequence signal, a computer causes mold-cavity-encasing mold parts to be engaged. In automatic response to sensing such engagement of the mold-cavity-encasing mold parts, the computer causes the molding system to be adjusted to enable disengagement of insulated-runner-channel-encasing mold parts. In automatic response to sensing such adjustment of the molding system, the computer causes channel-encasing mold parts to be disengaged, whereupon a sprue is automatically removed therefrom in response to relative movement of the channel-encasing mold parts.
    Type: Grant
    Filed: October 23, 1998
    Date of Patent: March 27, 2001
    Assignee: Universal Ventures
    Inventors: Paul Philip Brown, Jens Ole Sorensen
  • Patent number: 6193914
    Abstract: An apparatus and method for molding thermosetting polymers onto clothing. The apparatus includes at least one molding device, at least one polymer supply and a control system for controlling the operation of the molding devices and polymer supplies. The molding devices include die sets having an input member and a mold. The polymer supplies supply polymers for injection into the input members of the molding devices for use in molding three dimensional bodies of polymers onto substrates such as clothing.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: February 27, 2001
    Assignee: Ubertech Texas, Inc.
    Inventor: Donald G. Harrison
  • Patent number: 6180212
    Abstract: Method of making an automotive latch handle intended for operation by manually pulling fingertips across a margin of the handle; it includes the steps of: a) molding a latch handle of a first essentially rigid plastic defining an area support for the margin, which plastic when fully solidified and cured has a stiffness of 0.8-5.8 GPa and a durometer ratio of 710,000 shore A; and b) overmolding the support area of the first plastic with a second plastic to define the margin, which margin when fully solidified and cured defines a finger gripping pad that has a stiffness of <0.01 GPa and a durometer ratio in the range of 35-85 shore A. An automotive latch handle structure that comprises: a) a generally flat paddle having means facilitating linear or pivotal movement, the paddle having been formed by molding of a first essentially rigid plastic with a stiffness of 0.8-5.
    Type: Grant
    Filed: June 28, 1999
    Date of Patent: January 30, 2001
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Arthur Single, Beth M. Wichterman, Daniel Ryan Malwitz, Gerald Arthur Heath
  • Patent number: 6171538
    Abstract: A multi-cavity coinjection mold and method for simultaneously producing a plurality of multi-layered articles comprising: a mold structure defining a plurality of mold cavities; a first supply source for supplying metered amounts of a first molding material; a second supply source for supplying metered amounts of a second molding material; a hot runner system in communication with the first and second supply sources for conveying the metered amounts of the first and the second materials separately to a region proximate each of the cavities; a valve mechanism per cavity for receiving the metered amounts of the first and second materials from the hot runner system and for sequentially supplying desired quantity of the first and second materials contiguously to each cavity.
    Type: Grant
    Filed: April 29, 1999
    Date of Patent: January 9, 2001
    Assignee: DTL Technology Limited Partnership
    Inventors: Martin H. Beck, George F. Rollend