Including Internal Cooling Of The Article After Fluid Pressure Shaping Patents (Class 264/528)
  • Patent number: 11338496
    Abstract: The invention relates to a method for producing containers (14) from preforms (12) made of thermoplastic material by means of a blow molding machine (10) comprising at least one temperature control device (26) and one forming device having at least two forming stations (16), wherein the preforms (12) are temperature controlled by means of the temperature control device (26) on the basis of specifiable first control parameters, and wherein one temperature-controlled preform (12) is formed by means of one of the forming stations (16), respectively, on the basis of specifiable second control parameters into a container (14), wherein at least one of the second control parameters is individually specified for each of the forming stations (16). The invention furthermore relates to a blow molding machine (10), designed for executing the method according to the invention, for producing containers (14) from preforms (12) made of thermoplastic material.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: May 24, 2022
    Assignee: KHS GmbH
    Inventors: Michael Linke, Rolf Baumgarte, Frank Berger, Deniz Ulutürk, Jens-Peter Rasch, Arne Wiese, Bernd Zimmering, Thomas Herold, André Gerkens, Frank Haesendonckx
  • Patent number: 10350815
    Abstract: A method for producing a container from a preform having a body and a neck defining an inner cylindrical opening. The method including the steps of placing the preform in a mold having a molding cavity, —forming the container by injecting a forming fluid into the preform, and —filling the container with a liquid. Prior to forming of the container, an extension device is attached to the neck of the preform. The extension device includes an extension part defining an inner opening extending in the continuity of the inner opening of the neck. The extension device remaining attached to the neck of the preform at least during the forming and the filling steps.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: July 16, 2019
    Assignee: Discma AG
    Inventors: Daniel Diesnis, Benoit Picot
  • Patent number: 9586358
    Abstract: In a blow moulding machine for the production of plastics material containers, during a blow mould procedure, the container to be expanded is supplied with blow moulding air from a first gas preparation device on the one hand or from a second gas preparation device on the other hand. During this procedure a cooling of the base of the container is additionally carried out.
    Type: Grant
    Filed: April 17, 2013
    Date of Patent: March 7, 2017
    Assignee: KRONES AG
    Inventor: Peter Knapp
  • Patent number: 9427894
    Abstract: Provided is an inexpensive anti-reflection article with a sufficient anti-reflection property by using an anti-reflection article manufacturing mold plate manufactured at low cost. In a method of manufacturing an anti-reflection article manufacturing mold plate used to manufacture an anti-reflection article provided with an anti-reflection surface in which minute convex portions or minute concave portions are densely arranged and a gap between the adjacent minute convex portions or minute concave portions is the shortest wavelength or less of a wavelength band for anti-reflection, the method of manufacturing an anti-reflection article manufacturing mold plate includes: molding an uneven shape on a surface of a receptive layer by causing an anti-reflection surface of another anti-reflection article to come into pressure-contact with the surface of the receptive layer including a curable base; and curing the receptive layer in which the uneven shape is molded.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: August 30, 2016
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Hironori Kamiyama, Toshiaki Satou, Minoru Yamamoto, Tsukasa Ayuzawa
  • Patent number: 9358720
    Abstract: The invention relates to a method and device used to blow-mold containers. After thermal conditioning, a preform is shaped into the container inside a blow mold by the effect of blowing pressure. Required blowing gas is introduced into an interior of the preform through a connecting element. After the blow-molding, a purging gas is conducted through the interior of the container. A plurality of blowing stations are used, and, for at least one of the blowing stations, at least part of the required amount of the purging gas is stored in a storage volume associated only with said blowing station.
    Type: Grant
    Filed: January 17, 2011
    Date of Patent: June 7, 2016
    Assignee: KHS CORPOPLAST GMBH
    Inventors: Günther Godau, Michael Linke, Dieter Klatt, Michael Litzenberg, Karl-Heinz Balkau
  • Patent number: 8871136
    Abstract: Apparatuses and methods for joining one or more tubing sections together to form a tubular catheter device, for shaping one or more tubular sections of a catheter device, and/or for fusing elements (e.g., a radiopaque marker) onto a portion of the catheter. Each section of the catheter is typically fabricated independently from the other sections. Subsequently, the separate sections are fused together to form the catheter. The methods described herein allow the various sections of the catheter to be fitted together for fabrication without the use of heat-shrink tubing. The fitted parts are clamped in a die or mold at a temperature at or near room temperature; the die is then rapidly heated to fuse the parts, rapidly cooled back down to a temperature at or about room temperature, and removed from the die.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: October 28, 2014
    Assignee: Abbott Cardiovascular Systems, Inc.
    Inventors: David K. Wrolstad, Justin K. Mann
  • Publication number: 20130270751
    Abstract: A process for decreasing the mold residence time in extrusion blow molding, wherein pressurized air is used to expand a plastic into a blow molded article. The process comprises providing an extrusion blow molding mold having a mold cavity, with an air inlet into the mold cavity. Then, providing pressurized air to the mold cavity through the air inlet during the blow molding of the article such that the plastic expands to the mold walls, then, providing a pressurized liquefied gas, such that the expanded plastic is cooled by the liquefied gas, whereby the residence time in the mold cavity is decreased.
    Type: Application
    Filed: August 31, 2011
    Publication date: October 17, 2013
    Inventor: Earl Master Towzey, III
  • Patent number: 8354054
    Abstract: The invention relates to a method and a device for blow-molding containers. Following a thermal conditioning process, a parison is stretched by a horizontal bar inside a blow station provided with a blow mold, and is molded into a container by the effect of the blowing pressure. In order to carry out the blow-molding, pressurized gas is introduced into the container. The horizontal rod is hollow at least in parts. Once a maximum blowing pressure has been reached in the blow station and at the earliest at the beginning of a pressure drop, a cooling gas is guided out of the horizontal bar towards the bottom of the blown container.
    Type: Grant
    Filed: July 5, 2007
    Date of Patent: January 15, 2013
    Assignee: KHS Corpoplast GmbH & Co. KG
    Inventors: Frank Haesendonckx, Jens-Peter Rasch, Matthias Gernhuber
  • Publication number: 20120299225
    Abstract: The invention relates to a method and device used to blow-mold containers. After thermal conditioning, a preform is shaped into the container inside a blow mold by the effect of blowing pressure. Required blowing gas is introduced into an interior of the preform through a connecting element. After the blow-molding, a purging gas is conducted through the interior of the container. A plurality of blowing stations are used, and, for at least one of the blowing stations, at least part of the required amount of the purging gas is stored in a storage volume associated only with said blowing station.
    Type: Application
    Filed: January 17, 2011
    Publication date: November 29, 2012
    Applicant: KHS CORPOPLAST GMBH
    Inventors: Günther Godau, Michael Linke, Dieter Klatt, Michael Litzenberg, Karl-Heinz Balkau
  • Patent number: 8313322
    Abstract: The apparatus is constituted from a mold (1, 17, 14) formed by a central body (14) and a first head (1) and a second head (17) connected on opposite sides of the central body (14), as well as it having a rigid and perforated guide (5), which is axially centered inside the mold (1, 17, 14) whereon the blank pipe (10) is coupled longitudinally. This guide is provided with orifices (9) for the passage therethrough of an expansion fluid (18) which causes the expansion of the blank pipe (10) against the inner walls of the mold (1, 17, 14) without any heat exchange between the blank pipe (10) and the mold (1, 17, 14).
    Type: Grant
    Filed: July 13, 2007
    Date of Patent: November 20, 2012
    Assignee: Molecor Tecnología S.L.
    Inventor: Ignacio Muñoz De Juan
  • Publication number: 20110305856
    Abstract: Hollow body made of plastic having a fluorinated inner surface according to the present invention is characterized in that in one or more defined regions of the inner surface, the fluorine occupancy deviates from the mean fluorine occupancy by at least ±10%. Furthermore, a method for the production of a hollow body made of plastic having a fluorinated inner surface is presented, in which, for the formation of fluorocarbon and hydrofluorocarbon compounds, the inner surface is exposed to the action of a defined amount of a fluorine-containing treatment gas and the hollow body is thermostatted on its outside so that the temperature in one or more defined regions of the outside is at least ±2° C. above/below the mean temperature of the outside.
    Type: Application
    Filed: March 13, 2007
    Publication date: December 15, 2011
    Applicant: L'Air Liquide Societe Anonyme Pour L'Etude et I'Exploitation Des Procedes Georges Claude
    Inventor: Rolf Van Bonn
  • Patent number: 8012402
    Abstract: Methods of fabricating a polymeric stent with improved fracture toughness including radial expansion of a polymer tube along its entire length at the same time and fabricating a stent from the expanded tube are disclosed herein.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: September 6, 2011
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Lothar W. Kleiner, James P. Oberhauser, Thierry Glauser, David K. Wrolstad, Yunbing Wang
  • Patent number: 7981356
    Abstract: A method and apparatus for stretch blow moulding a preform into a desired article is disclosed. The method includes the steps of inserting the preform into a hollow mould, stretching the heated preform with a stretching member, filling the preform with an incompressible fluid such that the preform expands and is formed into the article by the mould and draining the incompressible fluid from the interior of the formed article. The apparatus comprises a hollow mould for receiving the preform, a stretching member for stretching the preform, an incompressible fluid filling means for filling the preform with an incompressible fluid such that the preform expands and a drain for draining the incompressible fluid from the formed article.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: July 19, 2011
    Assignee: Invoplas Pty Ltd
    Inventors: Graeme Warner, John Warner
  • Publication number: 20110089613
    Abstract: A process and a device for the manufacture of a hollow body, particularly of a heat-resistant hollow body, which is molded out of a heated preform of thermoplastic plastic in a contoured blow mold through the introduction of a first medium into the preform, which medium is stored in a first medium storage unit and is under a pressure (p1) (preblowing phase), and the more or less simultaneous stretching of the hollow body through a stretching rod and the introduction of a second medium in the hollow body, which medium is stored in a second medium storage unit and the pressure of which (p2) is higher than the pressure of the first medium (p1) (final blowing phase), and which is cooled by a third medium, which is medium stored in a third medium storage unit (rinsing phase), whereby the preblowing medium is under a pressure of approximately 2-20 bar, the final blowing medium is under a pressure of approximately 15-45 bar, and the cooling medium is under a pressure of approximately 30-45 bar.
    Type: Application
    Filed: December 23, 2010
    Publication date: April 21, 2011
    Applicant: KRONES AG
    Inventor: Jochen Hirdina
  • Publication number: 20110031659
    Abstract: A method and apparatus for stretch blow moulding a preform into a desired article is disclosed. The method includes the steps of inserting the preform into a hollow mould, stretching the heated preform with a stretching member, filling the preform with an incompressible fluid such that the preform expands and is formed into the article by the mould and draining the incompressible fluid from the interior of the formed article. The apparatus comprises a hollow mould for receiving the preform, a stretching member for stretching the preform, an incompressible fluid filling means for filling the preform with an incompressible fluid such that the preform expands and a drain for draining the incompressible fluid from the formed article.
    Type: Application
    Filed: March 15, 2006
    Publication date: February 10, 2011
    Inventors: Graeme Warner, John Warner
  • Patent number: 7780884
    Abstract: Embodiments of the present invention teach a method for post-mold treatment of a molded article and an apparatus for implementing the method. For example, a method of post-mold treatment of a molded article is provided. The method can be implemented in a molded article receptacle. The method comprises at a first instance in time, subjecting the molded article to a first type of post-mold treatment; and at a second instance in time, subjecting the molded article to a second type of post-mold treatment.
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: August 24, 2010
    Assignee: Husky Injection Molding Systems Ltd.
    Inventor: Joachim Johannes Niewels
  • Publication number: 20100201047
    Abstract: Process for forming containers from a blank, preferably a preform, made of a thermoplastic, the containers being formed using a stretch-blow moulding machine of rotary type having a blow-moulding mould mounted on the periphery of a carousel rotated continuously about its axis, the blow-moulding mould operating in cyclic manner according to a blow-moulding cycle having the following steps: placing a preheated blank in a blow-moulding mould; closing the blow-moulding mould; blowing the blank in the blow-moulding mould; flushing the inside of the container with a cooling gas, by injecting air thereinto; grasping the blow-moulded container by external gripping means; and opening the blow-moulding mould, which process includes automatically varying the duration of the flushing step at each start of production of the containers, in a temporary and evolving manner for a few minutes to establish in the containers thermal conditions enabling the first containers to be formed at a temperature that gives them a final vo
    Type: Application
    Filed: September 9, 2008
    Publication date: August 12, 2010
    Inventors: Mikael Derrien, Pierrick Protais
  • Publication number: 20100194001
    Abstract: A die for molding a cuff on a plastic tube, including an upper shell and a lower shell defining a molding cavity between them; each of the shells has an external structure and an internal wall for defining a half of the molding cavity and for defining a hollow space with the external structure. The molding cavity and hollow spaces are separated from each other by internal walls. The die includes openings which are connected with the molding cavity and the hollow spaces respectively.
    Type: Application
    Filed: September 10, 2009
    Publication date: August 5, 2010
    Applicant: COVIDIEN AG
    Inventors: Giuseppe ZUCCHI, Daniele RESCA, Alessandra PEDARZINI
  • Publication number: 20100194002
    Abstract: The apparatus is constituted from a mould (1, 17, 14) formed by a central body (14) and a first head (1) and a second head (17) connected on opposite sides of the central body (14), as well as it having a rigid and perforated guide (5), which is axially centred inside the mould (1, 17, 14) whereon the blank pipe (10) is coupled longitudinally. This guide is provided with orifices (9) for the passage therethrough of an expansion fluid (18) which causes the expansion of the blank pipe (10) against the inner walls of the mould (1, 17, 14) without any heat exchange between the blank pipe (10) and the mould (1, 17, 14).
    Type: Application
    Filed: July 13, 2007
    Publication date: August 5, 2010
    Applicant: MOLECOR TECNOLOGIA S.L.
    Inventor: Ignacio Muñoz de Juan
  • Publication number: 20100072679
    Abstract: A plastic film preform is expanded to form a container. The preform has a longitudinal axis that extends from an open top to a closed bottom. The preform is pressurized with a first pressure sufficient to cause side walls of the preform to expand outwardly and the bottom of the preform to be drawn inwardly thereby reducing a length of the preform along the longitudinal axis. Side molds are closed around the side walls of the preform, the closed side molds being larger than the expanded side walls. A bottom mold is closed to be adjacent to the bottom of the preform after pressurizing the preform with the first pressure. The preform is pressurized with a second pressure sufficient to expand the preform to fill the closed molds. The preform is thereby significantly stretched in a direction perpendicular to the longitudinal axis and minimally stretched along the longitudinal axis.
    Type: Application
    Filed: September 24, 2008
    Publication date: March 25, 2010
    Applicant: KRW MACHINERY, LLC
    Inventor: Kenneth R. Wilkes
  • Publication number: 20100025894
    Abstract: Methods of fabricating a polymeric stent with improved fracture toughness including radial expansion of a polymer tube along its entire length at the same time and fabricating a stent from the expanded tube are disclosed herein.
    Type: Application
    Filed: April 15, 2009
    Publication date: February 4, 2010
    Applicant: Abbott Cardiovascular Inc.
    Inventors: Lothar W. Kleiner, James P. Oberhauser, Thierry Glauser, David K. Wrolstad, Yunbing Wang
  • Publication number: 20100013128
    Abstract: In various embodiments, devices, systems, and methods for blow molding plastics are provided. In particular, the present disclosure provides for devices, systems, and methods that are configured to create an internal cooling airflow, using conductive and convective cooling thermal properties, such that the cycle time for blow molding plastics is reduced. The decrease in cycle time provided for in accordance with the disclosed devices, systems, and methods are between, approximately 15 percent and 35 percent.
    Type: Application
    Filed: July 17, 2009
    Publication date: January 21, 2010
    Applicant: LARSON TOOL COMPANY, LLC
    Inventors: Michael R. Larson, Raymond L. Larson
  • Publication number: 20100001439
    Abstract: An auxiliary device and a method for finishing and calibrating preforms that are removed from a multiple tool in an unstable shape, the calibration process being performed with compressed air immediately after removing and withdrawing the preforms from the multiple tool. Nipples that can be inserted into the preforms are provided with expandable press rings or sealing rings in order to seal the interior of the blow-molded part of the preforms. The compressed air is introduced via the nipples, the sealing process being performed by radially expanding the press rings or sealing rings in analogy to the closing process of thermoses, thus protecting the preforms from adverse forces. The sealing point can be randomly selected in the transition zone from the threaded part to the blow-molded part of the preforms. The interior of the blow-molded part is optimally sealed without affecting the form stability and dimensional stability of the preforms.
    Type: Application
    Filed: December 29, 2008
    Publication date: January 7, 2010
    Applicant: Netstal-Maschinen AG
    Inventor: Stefan BOCK
  • Publication number: 20090302510
    Abstract: The method comprises the following sequence of stages of operation: feeding the blowing air into the parison enclosed in the mould (1), with the maximum pressure characteristics required for the blow moulding thermoforming cycle, and maintaining this blowing condition for a minimum period depending on the characteristics of the container to be produced; reducing the blowing air pressure to a specified minimum level sufficient to keep the blown container adhering to the inner walls of the mould (1) which contains and shapes it; discharging the blowing air at low pressure from the inside of the blown container, in such a way that the inner surface of the container is bathed by a flow of air which is constantly renewed at the appropriate flow rate, which rapidly reduces the internal temperature of the container, while the external temperature of the container is reduced by contact with the walls of the mould (1) which are cooled by the forced circulation of a cooling fluid; interrupting the blowing cycle and the
    Type: Application
    Filed: June 22, 2007
    Publication date: December 10, 2009
    Inventors: Fabrizio Castellari, Moreno Minghetti, Emmanuel Velut
  • Publication number: 20090278288
    Abstract: The invention relates to a method and a device for blow-moulding containers. Following a thermal conditioning process, a parison is stretched by a horizontal bar inside a blow station provided with a blow mould, and is moulded into a container by the effect of the blowing pressure. In order to carry out the blow-moulding, pressurised gas is introduced into the container. The horizontal rod is hollow at least in parts. Once a maximum blowing pressure has been reached in the blow station and at the earliest at the beginning of a pressure drop, a cooling gas is guided out of the horizontal bar towards the bottom of the blown container.
    Type: Application
    Filed: July 5, 2007
    Publication date: November 12, 2009
    Inventors: Frank Haesendonckx, Jens-Peter Rasch, Matthias Gernhuber
  • Patent number: 7553441
    Abstract: A container made by reheat stretch blow molding process comprises a poly(ethylene terephthalate) copolymer including levels of diethylene glycol lower than that generated as a byproduct in conventional resin manufacturing process and minor amounts of naphthalenedicarboxylic acid resulting in containers which exhibit enhanced mechanical properties. Methods for making the contains and hot filling the containers are also disclosed.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: June 30, 2009
    Assignee: The Coca-Cola Company
    Inventor: Yu Shi
  • Publication number: 20090108504
    Abstract: Structured films having acoustical absorbance properties are disclosed. Methods of making and using the structured films are also disclosed.
    Type: Application
    Filed: April 27, 2007
    Publication date: April 30, 2009
    Inventors: David F. Slama, Jonathan H. Alexander, Graham M. Clarke, Brent R. Hansen
  • Publication number: 20090068432
    Abstract: Thermoplastic compositions comprising polyamide, polyimide, an organo phosphorus compound and an optional reinforcing filler are described. The subject compositions are useful in blow molding methods. A method of blow molding is also described as well as articles made by the method.
    Type: Application
    Filed: September 10, 2007
    Publication date: March 12, 2009
    Inventors: Robert R. Gallucci, Sanjay Braj Mishra, Norimitsu Yamaguchi
  • Publication number: 20080230961
    Abstract: A method for producing a multi-chamber syringe with a by-pass channel from a plastic material comprises the steps of producing a tubular preform from a thermoplastic material; providing a die designed to enclose the preform from the outside in an area of the by-pass channel to be formed, the at least one by-pass channel being preformed as a recess on an inner surface of the die; heating-up the preform to a temperature above the softening range of the plastic material, and positioning the preform in a predefined axial position inside the die; subjecting the preform to a differential pressure until the at least one by-pass channel is plastically formed; and cooling down the syringe body so formed to room temperature.
    Type: Application
    Filed: March 14, 2008
    Publication date: September 25, 2008
    Inventors: Thomas Moesli, Raffael Dudler, Peter Wolbring
  • Publication number: 20080164642
    Abstract: A process and a device for the manufacture of a hollow body, particularly of a heat-resistant hollow body, which is molded out of a heated preform of thermoplastic plastic in a contoured blow mold through the introduction of a first medium into the preform, which medium is stored in a first medium storage unit and is under a pressure (p1) (preblowing phase), and the more or less simultaneous stretching of the hollow body through a stretching rod and the introduction of a second medium in the hollow body, which medium is stored in a second medium storage unit and the pressure of which (p2) is higher than the pressure of the first medium (p1) (final blowing phase), and which is cooled by a third medium, which is medium stored in a third medium storage unit (rinsing phase), whereby the preblowing medium is under a pressure of approximately 2-20 bar, the final blowing medium is under a pressure of approximately 15-45 bar, and the cooling medium is under a pressure of approximately 30-45 bar.
    Type: Application
    Filed: March 8, 2005
    Publication date: July 10, 2008
    Applicant: KRONES AG
    Inventor: Jochen Hirdina
  • Publication number: 20070210492
    Abstract: Hot fill and retort stable containers can be made by blowmolding parisons made with polyalkylene terephthalate and a sufficient amount of nucleating agent under conditions that include heated molds, directional cooling air on container stress areas from vents formed into a push rod that is extended into the molded container while still in the heated mold, and an adequate residence time to grow the desired degree of crystallinity.
    Type: Application
    Filed: March 9, 2006
    Publication date: September 13, 2007
    Inventors: Kirk E. Maki, John Daly
  • Patent number: 7069635
    Abstract: A method for forming an integral socket to a pipe made from biaxially oriented thermoplastic material is described. The pipe has a pipe body and is provided, at one or both ends, with an integral socket. The biaxially oriented thermoplastic pipe is subjected to a socket-forming operation comprising the steps of fixing both axial ends of the unheated end part of the pipe, heating the fixed end part to a suitable socket-forming temperature in one or more steps, and expanding the axially fixed end part with the aid of a fluid pressure in the interior of the end part and/or a vacuum on the outer side of the end part, which expansion may begin as early as during the heating of the end part.
    Type: Grant
    Filed: July 30, 2001
    Date of Patent: July 4, 2006
    Assignee: Wavin B.V.
    Inventors: Arjan Dirk van Lenthe, Jan Visscher, Duncan Hamilton Wormald, Jan Hendrik Prenger
  • Patent number: 7026377
    Abstract: A process for producing a fiber-reinforced molded article and the resulting article such as a cantilevered battery tray. In the process, thermoplastic material in its solid state having a melt flow index above 25 g/10 minutes is fed into a suitable processing machine simultaneous with the addition of reinforcing fibers having a length of at least 0.375 inch or greater and sized with a material such as polyurethane, polyurea, and isocyanate derivatives thereof. The introduced materials are subjected to orientational agitation such that the reinforcing fibers are filamentized in an essentially homogeneous dispersion throughout the solid polymeric material. Once filamentization and dispersion are achieved, the resulting admixture is subjected to knead melting operations for an interval sufficient to achieve melting of the polymeric material introduced into a suitable plasticizing apparatus where the introduced material can be subjected to suitable knead melting operations.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: April 11, 2006
    Assignee: Mayco Plastics
    Inventor: Frank Grant
  • Patent number: 6997336
    Abstract: A plastic carafe includes a body portion having an enclosed base defined by a plurality of upstanding posts and a plurality of panels separating the posts from one another. The carafe further includes a neck portion having a blown finish at the top of the carafe that defines a wide-mouth. A shoulder portion transitions the posts and panels to the neck portion.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: February 14, 2006
    Assignee: Graham Packaging Company, L.P.
    Inventors: Sheldon Yourist, John Denner, Angie Noll, Roger Prevot
  • Patent number: 6979420
    Abstract: An apparatus for molding balloon catheters is disclosed. The balloon may be molded by providing a polymeric tube within a mold having an interior cavity in the shape of the desired balloon. Microwave energy, which may be generated by a gyrotron, may then be directed toward the mold, to heat the polymeric material without heating the mold. Once heated, pressurized fluid may be injected into the tube to blow the polymeric material against the interior cavity whereupon the material can cool to form the balloon or can be further heatset by additional microwave energy and be cooled to form the balloon.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: December 27, 2005
    Assignee: Scimed Life Systems, Inc.
    Inventor: Jan Weber
  • Patent number: 6875396
    Abstract: A PET hot fill bottle (2) has a neck (3) and a body (4). It is stretched and blown into a cavity (14), with internal pressure holding the body against the cavity. During a first period, the cavity is heated to 100° to 160° C. for between 3 to 7 seconds to relax stresses in the body. During a second period the cavity is cooled to 60° to 120° C. for 4 to 8 seconds. This solidifies it—without introducing stresses—so that it can be removed from the mould. The resulting bottle is heat stable when filled with water close to its boiling point, namely at 92° C. to 98° C. For the rapid heating and cooling of the mould cavity, it is provided with two series of passages (16, 17). The former house ohmic heaters (18); whilst the latter are connected to water and air supply lines (19, 20).
    Type: Grant
    Filed: February 25, 2000
    Date of Patent: April 5, 2005
    Inventor: Tjandra Limanjaya
  • Patent number: 6855289
    Abstract: Method and apparatus for in-mold handle attachment, wherein a portion of a blow-molded container is formed about a retaining member on a handle during blow molding. After forming the container portion about the retaining member, a cooling medium is directed at the location of the container portion in order to accelerate the cooling rate at the container portion. There is achieved at least one of an improvement in the security of the attachment of the handle to the container, and a reduction in the blow-mold processing time.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: February 15, 2005
    Assignee: Graham Packaging PET Technologies, Inc.
    Inventors: Suppayan M. Krishnakumar, David Piccioli
  • Patent number: 6841117
    Abstract: A wide-mouth plastic container is formed from a preform that is blow-molded to form an intermediate container article that has blown threads located below a moil. The moil is severed above the blown threads to yield the finished container. A preform and process for manufacturing the wide-mouth container are disclosed.
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: January 11, 2005
    Assignee: Graham Packaging Company, L.P.
    Inventors: Marvin Lee Smith, Robert Andrew Stewart, Tracy Marie Momany
  • Publication number: 20040156942
    Abstract: The present invention refers to an arrangement for the production of blow-molded hollow bodies from plastic with a blow molding machine, wherein a cooling medium can be blown via a conduit into a blow mold respectively into the hollow body for blowing up and cooling of the blow-molded hollow body. For improvement of cooling the interior of the hollow body within the blow mold, a closed conduit system is provided, in which the cooling medium circulates and is kept at an elevated pressure level and is cooled by means of a heat exchanger. Thereby, a higher yield of piece per time is realized at lower production cost. The closed cooling medium circulation system can be essentially retrofitted to all blow molding machine in order to raise efficiency.
    Type: Application
    Filed: March 24, 2004
    Publication date: August 12, 2004
    Inventors: Heinrich Josef Schulze Uphoff, Jan Peter Jacobs
  • Publication number: 20030108695
    Abstract: A method of making a disposable tumbler includes: injection molding a polyethylene terephthalate resin in an annular mold cavity defined by an injection mold wall and a core to form a resinous parison on the core; separating the parison from the injection mold wall by moving the parison on the core away from the mold wall; moving the parison on the core into alignment with a blow-mold; and expanding the parison by directing a pressurized fluid to its interior such that the parison separates from the core and expands to the surface of the blow mold to form the tumbler, wherein the parison is radially expanded by a factor of at least about 2.6 at its base to form the tumbler. Typically, the parison is radially expanded at its base by a factor of from about 2.6 to about 3.25 to form the tumbler; whereas preferably the parison is expanded by a factor of from about 2.7 to about 2.9.
    Type: Application
    Filed: July 26, 2002
    Publication date: June 12, 2003
    Inventors: Michael A. Freek, Ottavio Di Minno, Dan Weissman, Erland R. Sandstrom, David H. Hollenberg
  • Publication number: 20030098526
    Abstract: Method and apparatus for in-mold handle attachment, wherein a portion of a blow-molded container is formed about a retaining member on a handle during blow molding. After forming the container portion about the retaining member, a cooling medium is directed at the location of the container portion in order to accelerate the cooling rate at the container portion. There is achieved at least one of an improvement in the security of the attachment of the handle to the container, and a reduction in the blow-mold processing time.
    Type: Application
    Filed: November 27, 2001
    Publication date: May 29, 2003
    Inventors: Suppayan M. Krishnakumar, David Piccioli
  • Patent number: 6514451
    Abstract: A method for producing a heat set plastic container including: providing a mold cavity having sidewall surfaces and base surfaces; providing a plastic preform within the mold cavity; expanding and stretching the preform into conformity with the sidewall surfaces and the base surfaces to form a plastic container having a sidewall and a base; and inducing crystallinity in the base of the plastic container by applying heat from the base surfaces of the mold cavity to the base of the plastic container and by applying heat from an interior portion of the plastic container to an interior surface of the base of the plastic container.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: February 4, 2003
    Assignee: Schmalbach-Lubeca AG
    Inventors: Timothy J. Boyd, Kerry W. Silvers, Dwayne G. Vailliencourt
  • Patent number: 6485670
    Abstract: A method for producing a biaxially oriented, heat set plastic container, including the steps of providing a plastic preform within a mold cavity; expanding and stretching the plastic preform into conformity with the surfaces defining the mold cavity to form a biaxially oriented plastic container; inducing crystallinity in the plastic container by using convection heat transfer to heat a surface of the plastic container to a temperature of at least 120° C.; and removing the plastic container from the mold cavity. The PET containers produced by the method have an average sidewall crystallinity greater than about 30%, which allows the PET container to maintain its material integrity during any subsequent pasteurization or retort process of the contents in the PET container, and during shipment of the PET container.
    Type: Grant
    Filed: November 9, 1999
    Date of Patent: November 26, 2002
    Assignee: Schmalbach-Lubeca AG
    Inventors: Timothy J. Boyd, Kerry W. Silvers, Dwayne G. Valliencourt, G. David Lisch, Jr.
  • Patent number: 6485669
    Abstract: A method for producing a biaxially oriented, heat set plastic container, including the steps of providing a plastic preform within a mold cavity; expanding and stretching the plastic preform into conformity with the surfaces defining the mold cavity to form a biaxially oriented plastic container; inducing crystallinity in the plastic container by using convection heat transfer to heat a surface of the plastic container to a temperature of at least 120° C.; and removing the plastic container from the mold cavity. The PET containers produced by the method have an average sidewall crystallinity greater than about 30%, which allows the PET container to maintain its material integrity during any subsequent pasteurization or retort process of the contents in the PET container, and during shipment of the PET container.
    Type: Grant
    Filed: September 14, 1999
    Date of Patent: November 26, 2002
    Assignee: Schmalbach-Lubeca AG
    Inventors: Timothy J. Boyd, Dwayne G. Vailliencourt
  • Patent number: 6461547
    Abstract: A method of stretch blow molding a plastic parison mounted to a parison engagement assembly into a container including stretching the parison by sliding the stretching rod therethrough and into the parison, connecting the cooling fluid inlet port to the source of cooling fluid to introduce the cooling fluid within the container through the cooling fluid outlet port, and heating the blow mold rod seal assembly to maintain at least a portion of the stretching rod above the preselected level, and to maintain portions of seals above the predetermined level.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: October 8, 2002
    Assignee: 7345 Corp.
    Inventor: David C. Oas
  • Patent number: 6428735
    Abstract: A machine and method for blow molding a polyester bottle for carbonated beverages with an internal web structure positioned between two hand-grip depressions. The machine and method uses an injection-molded preform having a web feature and maintains the web of the preform in a precise position during heat-treatment and eventual blow molding into the bottle. Heat-treatment involves an oven capable of heating and cooling selected regions of the preform by using a combination of shields, heat energy reflective surfaces, and cooling airflows. Bottle blow molding involves precise placement of the preform relative to hand-grip surfaces in a blow mold cavity and cooling airflow of the internal web structure before bottle removal.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: August 6, 2002
    Assignee: Schmalbach-Lubeca AG
    Inventors: David A. Deemer, Christopher C. LaBombarbe
  • Publication number: 20020039675
    Abstract: An improved molding process provides highly conductive polymer composite parts have bulk conductivity over 10 S/cm. This conductivity is particularly useful in collector plate for use in fuel cells. The process can include compounding of a mixture of conductive filler with a polymer binder, extruding the mixture after the binder is plasticized to make pellets. The pellets can then be introduced to a dual temperature feed container of an injection molding machine and injected under high pressure and velocity into the mold cavity. The resulting parts, and particularly collector plates can be made economically and provide a high conductivity while maintaining strength and chemical resistance properties.
    Type: Application
    Filed: May 17, 2001
    Publication date: April 4, 2002
    Inventors: James C. Braun, John E. Zabriskie, Jay K. Neutzler, Michel Fuchs, Robert C. Gustafson, Blaine Priebe
  • Patent number: 6358462
    Abstract: A method of blow molding a plastic article. A plastic article is blow molded within a mold. The article has plastic parison a wall. The wall is pierced by a first and a second needle or blowing pin. The wall forms a fluid-tight connection between the first needle and the parison wall. A volume of cooling liquid is injected into the article through the first needle. The cooling liquid cools the interior wall. Gas is vented from within the article through the second needle while the cooling liquid is injected into the article. The cooling liquid is evacuated through the first needle after the interior wall is cooled sufficiently to be removed from the mold.
    Type: Grant
    Filed: April 28, 1999
    Date of Patent: March 19, 2002
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Brad Alan Miehls, Bradley Allen Silvius
  • Publication number: 20010031328
    Abstract: There are disclosed:
    Type: Application
    Filed: March 6, 2001
    Publication date: October 18, 2001
    Inventors: Seiji Shiromoto, Haruyuki Suzuki, Akinobu Sakamoto
  • Patent number: 6303071
    Abstract: Provided is a method for producing blow moldings having a relatively large size through blow molding by use of a simple facility. The method including the steps of feeding a melt parison of crystalline resin into the space between molds, clamping the molds, blowing a pressurized fluid into the interior of the parison so as to cause the parison to be into close contact with the inner surfaces of the molds and to solidify the parison, wherein, while the parison and the mold inner surfaces are in close contact, the temperature of inner surfaces of the molds is maintained at a temperature from a temperature 10° C. lower than the crystallization temperature of the crystalline resin to the melting point of the resin, and the parison is removed from the molds after the parison is cooled through introduction thereinto or discharge therefrom, during or after blowing-in of the pressurized fluid, of a cooling medium not higher than room temperature.
    Type: Grant
    Filed: April 2, 1999
    Date of Patent: October 16, 2001
    Assignee: Idemitsu Petrochemical Co., Ltd.
    Inventors: Minoru Sugawara, Katsuhiko Tada, Tomoyuki Obara, Koki Hirano