Contact Of Extrudate With Fluid Other Than Ambient Air Patents (Class 264/211.13)
  • Patent number: 10633275
    Abstract: The present disclosure relates to a method for cooling a component of a glass melting plant that contacts a glass melt, the corresponding cooling device, as well as the system of the cooling device and the cooled component itself. The method provides that a pipe with an open pipe end at least on one pipe section is introduced into an open cavity in the component with the formation of a peripheral annular space, and a cooling medium is introduced through the pipe into the cavity and is deflected at the base of the cavity, flows back in the annular space, and flows out of the cavity. In its pipe section introduced into the cavity, the pipe has a constriction and has perforations through the pipe walls in the region of the constriction, whereby the cooling medium is accelerated in its passage through the constriction in the inside of the pipe, and a portion of the cooling medium flowing back from the annular space is aspirated into the inside of the pipe.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: April 28, 2020
    Assignee: SCHOTT AG
    Inventors: Holger Hunnius, Reinhard Zintl, Ludwig Dürsch
  • Patent number: 9017587
    Abstract: A manufacturing method of biodegradable net-shaped articles includes: (a) preparing a biodegradable mixture; (b) granulating the mixture into plastic grains; (c) baking the plastic grains in an oven at 60° C. to 70° C. for 3 to 4 hours; (d) melting and extruding the plastic grains by a screw-type extruder so as to obtain a net-shaped preform; and (e) cooling and thereby finalizing the net-shaped preform in a cooling bath at 15° C. to 30° C. so as to obtain the net-shaped article.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: April 28, 2015
    Assignee: Minima Technology Co., Ltd.
    Inventors: Yu-Kai Huang, Chien-Ming Huang
  • Patent number: 8993050
    Abstract: Method of manufacturing granulates or continuous strips intended for feeding an extrusion machine, formed of a gel comprising at least, as majority elastomer, a styrene thermoplastic elastomer and more than 200 phr of an extender oil, each element of the granulate having a given surface area. The granulate element is sized so that the compactness, of a granulate element, is less than a value decreasing from 1500 m?1 to 375 m?1 and deposited on the surface of said granulates is an anti-tack agent having a value increasing from 2 cm3 to 8 cm3 per m2 of granulate surface area, when the mean size of the particles of said anti-tack agent increases from a value of 1 ?m to 100 ?m.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: March 31, 2015
    Assignees: Michelin Recherche et Technique S.A., Compagnie Generale des Etablissements Michelin
    Inventors: Vincent Abad, Jean-Marie Mus
  • Patent number: 8974209
    Abstract: An underwater cutting and pelletizing apparatus includes: a cutting device that cuts, with a cutter in a water chamber, molten resin, extruded from a die, into pellets; a separation device that separates, from carrier water, pellets sent from the water chamber of the cutting device to downstream with carrier water; a tank that is disposed below the separation device and stores carrier water discharged from the separation device; and a circulation path formed so as to circulate carrier water between the tank and the water chamber, wherein a hydroelectric power generator is provided on a return side of the circulation path formed on a downstream side of the water chamber, and generates electricity from the energy of the carrier water flowing downward in this path. According to such a configuration, the underwater cutting and pelletizing apparatus is made so as to achieve energy savings by recovering and reusing potential energy accompanying carrier water pumped up to a higher location.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: March 10, 2015
    Assignee: Kobe Steel, Ltd.
    Inventors: Tatsuto Nagaoka, Masahiko Kashiwa
  • Publication number: 20150060372
    Abstract: Porous hollow fiber membranes having a low molecular weight cut-off, processes for their production, and their use for separation tasks in the fields of biotechnology, pharmaceutical technology and food processing.
    Type: Application
    Filed: March 4, 2013
    Publication date: March 5, 2015
    Applicant: GAMBRO LUNDIA AB
    Inventors: Bernd Krause, Markus Hornung, Johannes Geckeler
  • Patent number: 8946375
    Abstract: A method for making over-indexed thermoplastic polyurethane elastomer precursor. The precursor may be cross-linked.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: February 3, 2015
    Assignee: NIKE, Inc.
    Inventors: Yasushi Ichikawa, Thomas J. Kennedy, III, Chien-Hsin Chou, Hui-Kai Liao
  • Patent number: 8939755
    Abstract: The invention relates to a device for the implementation of a method for the production of pellets of polyamide 6 or copolyamides. The method can include production of a melt of polyamide 6 or copolyamides by means of polymerization, production of pellets from the melt by means of underwater pelletization into a process fluid, removal of the pellets from a site of underwater pelletization in the process fluid, supply of the pellets in the process fluid to an extraction stage, extraction of low-molecular components as extract, and drying of the pellets after extraction, wherein the underwater pelletization stage and the extraction stage take place using the same process fluid.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: January 27, 2015
    Assignee: Automatik Plastics Machinery GmbH
    Inventor: Stefan Deiss
  • Patent number: 8840824
    Abstract: Single, continuous PTFE layers having lateral zones of varied characteristics are described. Some of the lateral zone embodiments may include PTFE material having little or no nodal and fibril microstructure. Methods of manufacturing PTFE layers allow for controllable permeability and porosity of the layers, in addition to other characteristics. The characteristics may vary from one lateral zone of a PTFE layer to a second lateral zone of a PTFE layer. In some embodiments, the PTFE layers may act as a barrier layer in an endovascular graft or other medical device.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: September 23, 2014
    Assignee: Trivascular, Inc.
    Inventors: Joseph W. Humphrey, Jeffry B. Skiba
  • Patent number: 8834764
    Abstract: The invention relates to a method of drying an extruded material that includes the steps of: providing a gaseous atmosphere with superheated steam in a housing, extruding a material in the housing, drying the material in the gaseous atmosphere, and moving the dried material out of the housing. An apparatus for drying the extruded material is also provided.
    Type: Grant
    Filed: August 5, 2008
    Date of Patent: September 16, 2014
    Assignee: Mars, Inc.
    Inventors: Siegfried Schmidt, Johannes P. Schlebusch
  • Patent number: 8784710
    Abstract: A method of making an expanded polytetrafluoroethylene (ePTFE) membrane including the steps of: providing an unsintered or partially sintered ePTFE membrane; matting the unsintered or partially sintered ePTFE membrane; and immediately thereafter, sintering the matted ePTFE membrane. A method for making ePTFE tubes includes the steps of: providing an unsintered or partially sintered ePTFE membrane; wrapping the ePTFE membrane around a mandrel or form tool to form an ePTFE tube; matting the ePTFE tube; immediately thereafter, sintering the matted ePTFE tube; and removing the sintered ePTFE tube from the mandrel or form tool.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: July 22, 2014
    Assignee: Phillips Scientific Inc.
    Inventors: Douglas R. Hansen, James V. Phillips
  • Patent number: 8778247
    Abstract: The invention relates to a polymer film made of a polyamide composition comprising at least 80 weight percentage (wt. %) of a semi-crystalline semi-aromatic polyamide with a melting temperature (Tm) of at least 270° C., wherein the wt. % is relative to the total weight of the polymer composition, wherein the polymer film has an average coefficient of thermal expansion in plane in the temperature range of 20° C.-Tg, measured in plane with the method according to ASTM D969-08, of at most 40 ppm/K. The said film can be made from a polyamide moulding composition comprising said polyamide by film casting followed by biaxial stretching. The film has properties suitable for carrier films in flexible printed circuit boards.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: July 15, 2014
    Assignee: DSM IP Assets B.V.
    Inventors: Alexander Antonius Marie Stroeks, Guido Richard Struijk
  • Patent number: 8734609
    Abstract: A process for continuous manufacturing of moisture-curable polyurethane formulations used as sealants and adhesives. The process is characterized by the fact that the reactive components are introduced independently, and without the need for a prepolymer, to a mixer. Solid or liquid raw materials can be either pre-blended or fed directly to the mixer, a twin-screw extruder, which provides the requisite energy to homogenously mix the raw materials and drive the chemical reaction. The process is designed so that the extruder barrel and screw allow variable feed addition and heat exchange down the length of the machine. This allows various operations to be performed at different points in the extruder, including reaction, dispersive mixing, distributive mixing and devolitization.
    Type: Grant
    Filed: December 24, 2008
    Date of Patent: May 27, 2014
    Assignee: Bostik, Inc.
    Inventor: Sean G. Duffy
  • Patent number: 8728372
    Abstract: Thin PTFE layers are described having little or no node and fibril microstructure and methods of manufacturing PTFE layers are disclosed that allow for controllable permeability and porosity of the layers. In some embodiments, the PTFE layers may act as a barrier layer in an endovascular graft or other medical device.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: May 20, 2014
    Assignee: TriVascular, Inc.
    Inventors: Joseph W. Humphrey, Jeffrey B. Skiba
  • Publication number: 20140103570
    Abstract: Systems, devices, and methods are described for cooling extruded materials. In certain embodiments, a quench tube is provided that includes an inner wall and an outer wall having a channel therebetween for transporting cooling fluid along the quench tube. A passage within the inner surface of the inner wall receives an extruded material through a nozzle formed at an end of the quench tube that delivers the cooling fluid to the extruded material. The channel may be angled at the nozzle to deliver the cooling fluid at an angle with respect to the quench tube, and the quench tube is configured to extend at least in part within an extrusion die.
    Type: Application
    Filed: October 12, 2012
    Publication date: April 17, 2014
    Inventors: Charles L. Stewart, Mark R. Denison, Robert Wessner
  • Patent number: 8685305
    Abstract: The invention aims at providing a heat-shrinkable polyester film which is excellent in tearability along perforations and in break resistance after storage when used as labels of beverage bottles. The invention relates to a heat-shrinkable polyester film which is made of a polyester resin comprising ethylene terephthalate as the main constituent and containing at least 13 mol % of at least one monomer capable of forming an amorphous component in the whole polyester resin component and which has specific heat shrinkage characteristics and exhibits specific mechanical characteristics after heat shrinking treatment. The film can be produced by a sequential biaxial orientation process comprising longitudinal orientation step, intermediate heat treatment step, positive cooling step, transverse orientation step, and final heat treatment step.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: April 1, 2014
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Masayuki Haruta, Masatoshi Hashimoto, Masakazu Iwasaki, Katsuhiko Nose
  • Patent number: 8628848
    Abstract: A filmic label including a face material having a front side, a reverse side and an adhesive layer including pressure sensitive adhesive on the reverse side of the face material. The face material includes at least one surface layer on at least one side of at least one central layer. The at least one central layer includes cavities that have been initiated at initiation sites by stretching the face material in a longitudinal direction and in a cross direction. The cavities have been expanded in a thickness direction of the face material by allowing a gaseous substance to have an effect on the at least one central layer. Also a method for forming a plastic film for a filmic label.
    Type: Grant
    Filed: June 2, 2008
    Date of Patent: January 14, 2014
    Assignee: UPM Raflatac Oy
    Inventors: Håkan Saxen, Martti Vähälä, Tom Saxberg
  • Patent number: 8585388
    Abstract: In an apparatus for the production of a non-woven fabric, a plurality of filaments (11) are extruded by a spinneret (2) into at least two groups spaced from each other to define an area of the cooling chamber without filaments and structures; the filaments are cooled by an air flow (Y) conveyed into the cooling chamber directed towards an intermediate area between said two groups of filaments, said area being located below an area of the spinneret without extrusion holes.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: November 19, 2013
    Assignee: Fare' S.p.A.
    Inventor: Rosaldo Fare'
  • Patent number: 8440124
    Abstract: Single screw extruder for making a dryer bar.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: May 14, 2013
    Assignee: The Procter & Gamble Company
    Inventors: Corey James Kenneally, Robb Richard Gardner, Fleumingue Jean-Mary, Thomas Edward Dufresne, Darren Paul Trokhan, Barry Michael Beagle, Scott Comstock, Kurt Goris Houk
  • Patent number: 8398906
    Abstract: The invention pertains to a method for making a polymer-additive composite particle from a dope by jet spinning the dope to obtain a pulp, fibril or fibrid, wherein the solvent of the dope is selected from N-methyl-2-pyrrolidone, N,N?-dimethylformamide, N,N?-dimethylacetamide, tetramethylurea, and 4 to 75 wt % of a composition consisting of 2 to 95 wt % of a para-aramid polymer and 5-98 wt % of a solid additive material, to a total of 100 wt %, and wherein the aramid polymer is dissolved in the solvent; or coagulating the dope by means of a rotor-stator apparatus in which the polymer solution is applied through the stator on the rotor so that the precipitating polymer-additive composite particle is subjected to shear forces while they are in a plastic deformable stage.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: March 19, 2013
    Assignee: Teijin Aramid B.V.
    Inventors: Anton Johannes Josef Hendriks, Mirjam Ellen Oldenzeel, Johannus Maria Bergmans, Tetsuya Akamatsu
  • Patent number: 8366980
    Abstract: It is intended to provide a method of producing a hollow construct, which may be in various shapes such as a fiber or a film as well as in various sizes and has chemical resistance, made of a fluorinated hydrocarbon polymer, a fluorinated carbon polymer or a polymer carrying a nitrogen-containing group, a silicon-containing group, an oxygen-containing group, a phosphorus-containing group or a sulfur-containing group having been introduced into the above-described polymer; and a hollow construct obtained by this method.
    Type: Grant
    Filed: July 30, 2008
    Date of Patent: February 5, 2013
    Assignee: Stella Chemifa Corporation
    Inventors: Terunori Yamaguchi, Shinji Hashiguchi, Mitsuo Ueno
  • Patent number: 8361363
    Abstract: To provide a foam board of a polyolefin resin which has an excellent heat insulating property and sound absorption property, of which a product can be material-recycled and which can continuously be produced at a low cost; a method for producing a foam board, which comprises extrusion-foaming by ejecting a mixture of a polyolefin resin composition containing a linear polypropylene resin having a melt tension of from 5 to 30 g at 230° C. and a foaming agent containing at least carbon dioxide in the supercritical state, by means of an extruder which has a multi-hole type die having an opening diameter of from 0.1 to 1.0 mm and the number of openings of from 50 to 5,000 at an ejection amount (V) of from 0.05 to 0.45 kg/hr per one opening in the die at a melt-extrusion temperature of from 160 to 250° C., under atmosphere at a proximal resin pressure of from 7 to 20 MPa at the openings of the die.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: January 29, 2013
    Assignee: Asahi Fiber Glass Company, Limited
    Inventors: Toru Itadani, Masaaki Ono, Kengo Ozaki
  • Patent number: 8298466
    Abstract: Medical articles with porous polymeric structures and methods of forming thereof are disclosed. The porous structure can have pores sizes that are nanoporous or greater than nanoporous. The porous structure can be a coating or layer of a medical device such as a stent, stent graft, catheter, or lead for pacemakers or implantable cardioverter defibrillators. Additionally, the body of the medical device can be a porous polymeric structure. The porous structure can be made from bioabsorbable polymers. The porous structures can be formed by contacting a polymer with a supercritical fluid.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: October 30, 2012
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Kumin Yang, Neftali Fernandez
  • Patent number: 8287786
    Abstract: A method and apparatus for using a cryogen for cooling articles, particularly having applications for chilling extrusions. The apparatus and method including removing thermal energy from an article by conductive and convective heat transfer. The apparatus and method allows for heat transfer from an outer surface of an article, and from an inner surface of the article.
    Type: Grant
    Filed: November 17, 2007
    Date of Patent: October 16, 2012
    Inventor: Michael R. Thomas
  • Patent number: 8287787
    Abstract: The present invention generally relates to a cooling process and system that can be utilized in the manufacture of flexible elongate extruded materials, such as tubing or jacketed electrical wire and cable. More particularly, the present invention relates to a cooling trough for cooling flexible elongate extruded materials after extrusion. Cooling trough embodiments have a base, a wet cooling chamber above the base, and an air dry chamber above the wet cooling chamber. The base contains a reservoir for collecting and storing a cooling liquid. An extruded material, such as a cable, enters the wet cooling chamber, where the cooling liquid from the reservoir is sprayed onto the material, the material is then passed to the air dry chamber where it is dried.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: October 16, 2012
    Assignee: Cerro Wire LLC
    Inventor: Douglas P. Henderson
  • Patent number: 8257632
    Abstract: A heat-insulating transparent PVC sheet useful to replace the glass or affixed to the glass is made by a non-coating process for cutting-off infrared and ultra-violet, which production method is an improved traditional process for producing the PVC sheets, and in the production a specific formula of PVC blends containing PVC resin, plasticizer, inorganic heat-insulating particles and other additives is directly used to produce the PVC sheet to keep the properties of PVC and to provide transparency, low haze and an excellent effect for cutting-off infrared and ultra-violet.
    Type: Grant
    Filed: November 6, 2009
    Date of Patent: September 4, 2012
    Assignee: Nan Ya Plastics Corporation
    Inventors: Sung-Yueh Shieh, Dein-Run Fung, Ying-Te Huang, Chao-Hsien Lin, Chia-Ho Cheng, Wen-Yi Wu
  • Patent number: 8246886
    Abstract: A method and system for aligning nanotubes within an extensible structure such as a yarn or non-woven sheet. The method includes providing an extensible structure having non-aligned nanotubes, adding a chemical mixture to the extensible structure so as to wet the extensible structure, and stretching the extensible structure so as to substantially align the nanotubes within the extensible structure. The system can include opposing rollers around which an extensible structure may be wrapped, mechanisms to rotate the rollers independently or away from one another as they rotate to stretch the extensible structure, and a reservoir from which a chemical mixture may be dispensed to wet the extensible structure to help in the stretching process.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: August 21, 2012
    Assignee: Nanocomp Technologies, Inc.
    Inventors: David S. Lashmore, Robert Braden, Anastasios John Hart, John Welch
  • Patent number: 8246873
    Abstract: Making foamed polyolefin tapes can include combining a polyolefin resin and a chemical blowing agent to form a mixture. This mixture can then be heated in an extruder to create a supersaturated solution of gas within the polyolefin resin. A cooling device can be positioned adjacent to a die at a set distance for receiving extruded resin and for allowing exposure of the extruded resin to ambient air between a die outlet and the cooling device. This predetermined distance or space between the cooling device and die outlet allows bubbles to grow in the extruded resin and to be shaped such that voids or empty spaces can be generated within the extruded polyolefin resin. The voids or empty spaces allow the formation of tapes which use less material but have adequate strength for various applications, such as for carpet backings, geotextiles, packaging, housewrap, bags, wire insulation, and reinforcement elements in concrete.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: August 21, 2012
    Assignee: Propex Operating Company, LLC
    Inventors: Hugh C. Gardner, Josef Uesbeck, Andy Rakovac, Philippe Combier, Kam Lui
  • Patent number: 8192665
    Abstract: Methods relating to polymer-bioceramic composite implantable medical devices are disclosed.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: June 5, 2012
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Bin Huang, David C. Gale
  • Patent number: 8182737
    Abstract: Formed film, apparatus and methods for manufacturing formed film, and articles of manufacture are disclosed. Methods include controlled introduction of melt foldovers through modifying the surface area of a polymer melt curtain. Apparatus for same is also shown as are articles of formed film with melt foldovers.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: May 22, 2012
    Assignee: Tredegar Film Products Corporation
    Inventors: James D. Tribble, Rickey J. Seyler, Matthew J. O'Sickey, Timothy L. Clark
  • Patent number: 8168103
    Abstract: A method for making a mushroom-type hook strap for mechanical fasteners is disclosed. In a first stage of the method, a hook strap on which a plurality of hook preforms each having a substantially V-shaped free end are integrally molded. Then, in a second stage of the method, the V-shaped free end of each the hook preform is deformed into a polygonal head portion by two calendar rolls so as to form a mushroom-type hook strap that has a higher engaging percentage with the loop strap, has a longer lifetime, and is capable of providing a reliable and all-directional uniform fastening function.
    Type: Grant
    Filed: October 23, 2008
    Date of Patent: May 1, 2012
    Assignee: Taiwan Paiho Limited
    Inventor: Sen Mei Cheng
  • Publication number: 20120097067
    Abstract: This invention provides both void-filling pellets and packaging board that are environmentally compatible and biodegradable. They are made from starch and cellulose fiber, potentially from recycled paper Extruded Pulp Fiber shell waste The void-filling pellets have a hard outer shell and a foamed interior. This makes them resilient to crushing, while at the same time reversibly compressible, providing protection for the item inside the packaging. The reinforced packaging board also has a hard outer shell and a foamed interior, and is reinforced by way of a multi-laminate or corrugated structure. Both the pellets and the board are made by an extrusion process that creates the outer layer and fills the interior with foam.
    Type: Application
    Filed: June 22, 2010
    Publication date: April 26, 2012
    Inventor: Carlo Fascio
  • Patent number: 8153254
    Abstract: Described are methods for surface modification of an object (10) in order to increase the adhesive power of the object, wherein the surface (11) is subjected to structuring so that a multitude of projections (12) are formed, each comprising a foot part and a head part, wherein the head part comprises a front surface (13) which faces away from the surface, wherein each projection (12) is made in a size such that all front surfaces (13) project to the same vertical height above the surface (11), and form an adherent contact surface (14) which is interrupted by mutual spacing between the front surfaces (13).
    Type: Grant
    Filed: May 26, 2003
    Date of Patent: April 10, 2012
    Assignee: Max-Planck-Gesellschaft zur Foerdurung der Wissenschafter E.V.
    Inventors: Eduard Arzt, Stanislav Gorb, Huajian Gao, Ralf Spolenak
  • Publication number: 20120080815
    Abstract: The present invention generally relates to a cooling process and system that can be utilized in the manufacture of flexible elongate extruded materials, such as tubing or jacketed electrical wire and cable. More particularly, the present invention relates to a cooling trough for cooling flexible elongate extruded materials after extrusion. Cooling trough embodiments have a base, a wet cooling chamber above the base, and an air dry chamber above the wet cooling chamber. The base contains a reservoir for collecting and storing a cooling liquid. An extruded material, such as a cable, enters the wet cooling chamber, where the cooling liquid from the reservoir is sprayed onto the material, the material is then passed to the air dry chamber where it is dried.
    Type: Application
    Filed: July 27, 2011
    Publication date: April 5, 2012
    Inventor: Douglas P. Henderson
  • Publication number: 20120045656
    Abstract: The present invention relates to a polypropylene composition comprising a first component being a propylene polymer produced in presence of a metallocene-based catalyst system, and a second component being a random copolymer of propylene and one or more comonomers, said random copolymer being produced in presence of a Ziegler-Natta polymerization catalyst. The polypropylene composition of the present invention is particularly suited for blown film and is characterized by excellent optical properties. Further, the present invention relates to a multilayer film or a laminate comprising such a blown film. Additionally, the present invention relates to a process for producing such a blown film, multilayer film or laminate.
    Type: Application
    Filed: March 5, 2010
    Publication date: February 23, 2012
    Inventors: Fabienne Radermacher, Franky Fant
  • Patent number: 8092732
    Abstract: The present invention provides a processing method of the natural cellulose fiber with feature for enhancing the capability of antifungi, antibacteria and deodorization. The procedure is that firstly modify and reduce the properties of the natural chitosan of high polymer material to nanometer scale; secondly dunk the chitosan into the syrup-like mixture of wood pulp and NMMO solvent to yield quasi-dope; thirdly dehydrate the quasi-dope of paste mixture to form the mud-like dope; fourthly spin the dope by dryjet wet spinning method; fifthly regenerate the filament in coagulation bath, water rinse and dry; finally water rinse, dry, apply the lubricant to finish. The water soluble chitosan, which has been treated by property modification and reduced to nanometer scale, can effectively and completely solve in the cellulose of low DP to offer wider extent of selection in the DP and better flexibility of adding percentage in content of modified chitosan.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: January 10, 2012
    Assignee: Acelon Chemical and Fiber Corporation
    Inventors: Wen-Tung Chou, Ming-Yi Lai, Kun-Shan Huang
  • Patent number: 8092731
    Abstract: The invention relates to a method for producing a thermoplastic plastic film. According to said method, the thermoplastic plastic is melted and transported in an extrusion installation comprising an extruder, an extrusion nozzle with a wide-slot delivery opening and a chill roll, which is fixed to a roll system and then leaves the delivery opening of the extrusion nozzle in the form of a flat melted web. Said melted web is then applied to the chill roll and is cooled. The invention is characterised in that it uses an extrusion installation, in which the distance between the delivery opening of the extrusion nozzle and the surface of the cooled roll does not vary by more than +/?50 ?m during the operating time. The invention also relates to a film of this type and to uses of the latter.
    Type: Grant
    Filed: November 24, 2005
    Date of Patent: January 10, 2012
    Assignee: Röhm GmbH
    Inventors: Claude Guenanten, Christoph Steinfels, Herbert Groothues, Christoph Krohmer, Helmut Haering, Detlef Birth, Christopher Neuroth, Michael Meier-Kaiser, Walter Meon
  • Patent number: 8075830
    Abstract: A blown film that comprises polypropylene that has a melt flow rate of 1.8 to 14.0 g/10 min. and a melting point of at least 115° C. The blown film has a haze of less than 10% and a gloss of greater than 70%. The blown film may be co-extruded with a medium density polyethylene or 15 wt % of an impact copolymer. A clarifier may also be incorporated. The blown film that comprises polypropylene is produced on a standard air cooled blown film line.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: December 13, 2011
    Assignee: Fina Technology, Inc.
    Inventors: Rodolfo Mier, Mark Miller, Raleigh McBride
  • Patent number: 8052907
    Abstract: A woven panel is formed from at least one first polymer yarn and at least one second polymer yarn wherein the second polymer yarn has a core. The core yarns provide mechanical strength for the woven material in supporting the coreless yarns when used in load bearing articles such as the seat or back portions of an article of furniture.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: November 8, 2011
    Assignee: Sun Isle USA, LLC
    Inventors: Larry Schwartz, Coley Chris Mathis
  • Publication number: 20110247285
    Abstract: A covering panel has a support plate, made from synthetic plastic material, with a flat and even top surface, a bottom face and pairs of opposite sides provided with complementary profile edges in the form of a male profile edge on one side and a female profile edge on the other, where said male profiled edge can be connected to a female edge of an equal adjacent covering panel, preferably according to a direction that runs perpendicular to said top surface. In their bottom face there are strip-shaped recesses that run according to the direction of extrusion and alternate with a number of support strips, of which at least a part has a width S along that bottom face that complies with 1.5 T<S<10 T, and whereby 0.4 T<C<0.7 T applies, in which C is the average depth of these recesses. A process extrudes a synthetic plastic plate.
    Type: Application
    Filed: December 15, 2009
    Publication date: October 13, 2011
    Inventors: Carlos Wybo, Lasseel Sammy
  • Patent number: 8007701
    Abstract: A positionable gas nozzle assembly having a nozzle tube for injecting and directing pressurized air or other inert gas into a pellet slurry so as to increase the velocity of the slurry from a pelletizer to and through a dryer. The variably positionable nozzle tube can be inserted, retracted and/or intermediately positioned either manually or using an automated control system. The automated control system preferably includes a pneumatic cylinder movably engaged with a carriage that is fixedly coupled to the nozzle tube. The pneumatic cylinder contains a piston that is magnetically coupled with the carriage such that movement of the piston in response to the injection of pressurized air into the cylinder also moves the carriage and the nozzle tube to obtain the variable positions.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: August 30, 2011
    Assignee: Gala Industries, Inc.
    Inventors: Robert G. Mann, Charles W. Simmons, Robert A. Ryan
  • Patent number: 7914719
    Abstract: Process for the manufacture of a spun fleece web made of filaments and particularly made of filaments made of thermoplastic synthetic material. The filaments are spun out of a mixture comprising at least one polymer and at least one hydrophilic additive and are plaited to form the fleece web. The fleece web is heated to a temperature of at least 30° C. and/or moistened with an aqueous liquid. The fleece web is thereafter hydrodynamically compacted.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: March 29, 2011
    Assignee: Reifenhaeuser GmbH & Co., Maschinenenfabrik
    Inventors: Sebastian Sommer, Jens Guedden
  • Patent number: 7914841
    Abstract: A method of forming a coated medical device is described. A coating may be applied inline to a continuous tubing formed by extrusion, prior to cutting and secondary operations. Thus, inefficient and labor-intensive steps associated with preparing individual tubes for coating may be avoided. The method may include forcing a flowable material through an exit port of an extruder, depositing a coating onto at least a portion of the continuous length of extruded tubing after the tubing is forced through the exit port, cutting the coated tubing to a desired length after depositing the coating, and performing one or more secondary operations on the coated tube at a temperature in the range of from about 15° C. to about 375° C.
    Type: Grant
    Filed: February 1, 2007
    Date of Patent: March 29, 2011
    Assignee: Cook Medical Technologies LLC
    Inventors: Scott E. Eells, David R. Lessard
  • Patent number: 7892469
    Abstract: An intravascular catheter system for properly implanting a stent in a body lumen generally comprising a catheter having an elongated shaft with an inflatable balloon formed of compliant material and a stent mounted on the working length of the balloon. The balloon material is compliant within the working range of the balloon to provide substantial radial expansion. The wingless radially expansive balloon expands in a uniform manner, thereby producing uniform expansion and implantation of the stent. Another embodiment is directed to a balloon catheter, having a semi-compliant balloon or a noncompliant balloon formed at least in part of a block copolymer.
    Type: Grant
    Filed: March 16, 2004
    Date of Patent: February 22, 2011
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Florencia Lim, NianJiong Bei, Chi Le Long
  • Patent number: 7879283
    Abstract: A sizer assembly for providing a shaped polymeric article in an extrusion process includes a sizer body having a product profile channel corresponding to the shaped polymeric article formed therethrough. The sizer body includes a plurality of cooling liquid inlet slots forming an opening substantially around the product profile channel and a plurality of vacuum slots forming an opening substantially around the product profile channel for removing cooling liquid expelled from said cooling liquid inlet slots.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: February 1, 2011
    Assignee: Certainteed Corporation
    Inventors: Kevin D. Hartley, Robert C. McEldowney, Thomas G. Gilbert, Thomas A. Gates
  • Patent number: 7875221
    Abstract: The method for the continuous production of a composition comprising rubber (20), hydrocarbon resin (22), and solvent (26) provides for the use of a dual-screw extruder (10), for example, a co-rotating dual-screw extruder. Preferably, at least a fraction of the solvent (26) is added at a point of the extruder (10) that is downstream of the initial section, for example, at a distance of at least 4 D from the initial section of the extruder (10).
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: January 25, 2011
    Assignee: F.LLI MARIS S.p.A.
    Inventor: Gianfranco Maris
  • Patent number: 7846360
    Abstract: Process for the production of granules of expandable thermoplastic polymers by means of extrusion, which comprises: i) melting the polymer in a single- or multi-screw extruder (2); ii) incorporating an expanding agent in the polymer in the molten state; iii) granulating the polymer thus obtained in a device comprising a die (111), containing a series of ducts (115) made of a material having a high thermal conductivity (114), a cutting chamber (118) containing a set of hydraulic nozzles and a cutting system equipped with a set of knives (215) with a cutting edge which is radial with respect to the surface of the die; iv) annealing the granules thus obtained; v) cooling the annealed granules to room temperature.
    Type: Grant
    Filed: December 5, 2002
    Date of Patent: December 7, 2010
    Assignee: Polimeri Europa S.p.A.
    Inventor: Alessandro Casalini
  • Patent number: 7815828
    Abstract: A method for manufacturing thermoplastic resin expandable granules comprising the steps of: injecting a blowing agent under pressure into a thermoplastic resin which is melted in an extruder; extruding the melted resin containing the blowing agent as an extrudate from a plurality of small holes in a die attached to a distal end of the extruder directly into a coolant liquid, and directly cutting the extrudate by high-speed rotary blades; and cooling and solidifying the extrudate by contacting with the coolant liquid, and thereby obtaining the expandable granules wherein the melted resin containing the blowing agent passing through land parts of the small holes of the die is extruded such that a shearing speed is 12,000 to 35,000 sec?1, and an apparent melt viscosity of the resin is 100 to 700 poise.
    Type: Grant
    Filed: September 8, 2004
    Date of Patent: October 19, 2010
    Assignee: Sekisui Plastics Co., Ltd.
    Inventors: Toshiro Kobayashi, Tsuneo Doi, Hideki Kobayashi
  • Patent number: 7744806
    Abstract: As a first aspect, the present invention is directed to a process for making a heat-shrinkable annular film, comprising: (A) extruding an annular extrudate downward from an annular die; (B) quenching the annular extrudate by applying a quenching liquid to the annular extrudate; (C) reheating the extrudate to an orientation temperature of from 130° F. to 210° F., resulting in a reheated annular extrudate; and (D) orienting the reheated annular extrudate while the reheated annular extrudate is in the solid state, the orientation being carried out with a total orientation factor of at least 2, so that the resulting oriented, heat-shrinkable film has a total free shrink at 185° F. of at least 10 percent. The extrudate comprises at least one semi-crystalline polyamide selected from the group consisting of: (i) polyamide 6, (ii) polyamide 66, (iii) polyamide 6/66, and (iv) polyamide 6/12. The semi-crystalline polyamide makes up at least 5 volume percent of the annular extrudate.
    Type: Grant
    Filed: January 29, 2007
    Date of Patent: June 29, 2010
    Assignee: Cryovac, Inc.
    Inventors: Michael E. Broadus, Richard M. Dayrit, Bryan E. Freeman, Frank M. Hofmeister, Brian P. Rivers, Roger D. Vrooman, Christopher K. Robinson, George D. Bolden, Robert W. Campbell, Nathanael R. Miranda
  • Patent number: 7700022
    Abstract: A woven panel is formed from at least one first polymer yarn and at least one second polymer yarn wherein the second polymer yarn has a core. The core yarns provide mechanical strength for the woven material in supporting the coreless yarns when used in load bearing articles such as the seat or back portions of an article of furniture.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: April 20, 2010
    Assignee: Casual Living Worldwide, Inc.
    Inventors: Larry Schwartz, Coley Chris Mathis
  • Patent number: 7691306
    Abstract: The present invention relates to a transparent polypropylene based sheet and its manufacturing method capable of: providing proper properties as a transparent sheet such as tensile characteristic, impact resistance, rigidity and little generation of whitening when being folded as well as maintaining transparency; preventing generation of a gum-like material in molding; and realizing continuous production. A manufacturing machine 1 includes: an extruding unit 11 for melting and kneading a raw material and extruding the material into a sheet-like shape; a first cooling unit 12 for cooling the melted sheet-like resin composition 20a to obtain a sheet (sheet-like article) 20; a preheating unit 13 for reheating the sheet 20; a heat treatment unit 14 for heat-treating the sheet-like resin composition 20; and a second cooling unit 15 for cooling the heat-treated sheet 20. The raw material of a resulting sheet 21 contains a polypropylene resin (a) and a metallocene-type ethylene-?-olefin copolymer (b).
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: April 6, 2010
    Assignee: Idemitsu Unitech Co., Ltd.
    Inventors: Akira Funaki, Masahiro Akamatsu, Shigeki Yamaguchi, Kenichi Mori, Tomoyuki Kitajima