Stretching Or Stretch Forming Patents (Class 264/291)
  • Patent number: 10486112
    Abstract: A polyolefin microporous membrane is disclosed. The membrane has a width of not less than 100 mm, and a variation range of an F25 value in a width direction is not greater than 1 MPa. The F25 value is a value obtained by dividing a load at 25% elongation of a sample of the laminated polyolefin microporous membrane as measured with a tensile testing machine by a cross-sectional area of the sample.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: November 26, 2019
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Naoki Mizuno, Masami Sugata
  • Patent number: 10361097
    Abstract: Apparatus for use in preparing heterostructures having a reduced concentration of defects including apparatus for stressing semiconductor substrates to allow them to conform to a crystal having a different crystal lattice constant.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: July 23, 2019
    Assignee: GLOBALWAFERS CO., LTD.
    Inventors: Robert J. Falster, Vladimir V. Voronkov, John A. Pitney, Peter D. Albrecht
  • Patent number: 10315368
    Abstract: A forming and trimming tool (100) operable to form and trim a composite material part. The tool includes a lower die (150), a core (115) mounted to the lower die, at least one lower pressure pad (120) mounted to the lower die, and a cutter (125) mounted to the lower die. Additionally, the tool includes an upper die (105), a cavity mounted to the upper die, and at least one upper pressure pad (110) mounted to the upper die.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: June 11, 2019
    Assignee: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Jeffrey D. Wenzel, Jay M. Tudor, Dev Barpanda, Scott R. Kaleyta
  • Patent number: 10113023
    Abstract: Antistatic polymers include divalent segments having the formulas (I) and (II) and wherein R1 represents an alkyl group having from 1 to 18 carbon atoms, R2 and R3 represent alkyl groups having from 1 to 4 carbon atoms, R4 represents an alkylene group having from 2 to 8 carbon atoms, and R5 independently represents H or methyl. Methods of making antistatic polymers are also disclosed.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: October 30, 2018
    Assignee: 3M Innovative Properties Company
    Inventors: Yu Yang, Jason M. Kehren, Suresh S. Iyer, William M. Lamanna, Thomas P. Klun, Jeffrey A. Peterson
  • Patent number: 9802219
    Abstract: A polymer workpiece is described. The workpiece has an upper main surface, a lower main surface, an injection-mold separating surface and a flow attack edge surface. The flow attack edge surface is formed in the region between the injection-mold separating surface and the lower main surface as a planar surface with an angle ? with respect to the injection-mold separating surface of 20° to 70°, and/or deviates by an amount a from 0.0 mm to 0.5 mm from the planar surface.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: October 31, 2017
    Assignee: SAINT-GOBAIN GLASS FRANCE
    Inventors: Wolfgang Fleischmann, Marcus Guldan, Dominic Gueldner, Thomas Lux
  • Patent number: 9271778
    Abstract: A method and an apparatus for screw removal from bone plates used in osteosynthesis. The method includes the steps of: performing an incision in the soft tissue surrounding an implanted bone screw having a screw head inserted in an elongated plate hole of a bone plate; positioning an expandable tip of the apparatus in a portion of the plate hole which is not occupied by the bone screw and in the proximity of the screw head of the bone screw, wherein the expandable tip is in an unexpanded position; and widening the plate hole in a lateral direction essentially perpendicular to a major axis of the elongated plate hole by expanding the expandable tip of the apparatus from the unexpanded position to an expanded position.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: March 1, 2016
    Assignee: RISystem AG
    Inventor: Romano Matthys
  • Patent number: 9157172
    Abstract: The invention provides a method for producing carbon fiber bundles excellent in productivity without impairing the quality in the process for producing carbon fibers. The method includes a flame-retarding step, a precarbonization step, and a carbonization step. When traveling pitches of the fiber bundles in the flame-retarding step, precarbonization step and carbonization step are represented by P1, P2 and P3, respectively, 0.8?P2/P1?1.0 and 0.4?P3/P1?0.8 are satisfied; when traveling pitches of the fiber bundles at the inlet and the outlet of a heat treatment section of a precarbonization furnace are represented by P11 and P12, respectively, 0.40?(P12/P11)?0.90 is satisfied; or when traveling pitches of the fiber bundles at the inlet and the outlet of a heat treatment section of a carbonization furnace are represented by P13 and P14, 0.40?(P14/P13)?0.90 is satisfied.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: October 13, 2015
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Yasuhito Tokoro, Tomoyuki Kotani
  • Patent number: 9034218
    Abstract: An object of this invention is to provide a cellulose ester film which satisfies the requirement 0.95<plasticizer content of A surface/plasticizer content of B surface<1.05, provided that A surface represents one surface of the cellulose ester film and B surface represents the other surface, has a high sound velocity of the film and is excellent in light leakage and color unevenness, and a film-forming method of this cellulose ester film. The cellulose ester film of the present invention, which contains a cellulose ester, is characterized by satisfying the requirement 0.95<plasticizer content of A surface/plasticizer content of B surface<1.05, provided that A surface represents one surface of the cellulose ester film and B surface represents the other surface, and having a sound velocity along at least one of a film transport direction and the lateral direction at 23.° C. 55% RH of 2.0-2.7 km/s.
    Type: Grant
    Filed: January 17, 2012
    Date of Patent: May 19, 2015
    Assignee: KONICA MINOLTA OPTO, INC.
    Inventor: Minori Tamagawa
  • Patent number: 8993672
    Abstract: Polyolefin block and graft copolymers comprised of two or more semicrystalline polyolefin blocks or grafts and one or more amorphous polyolefin blocks can be blended with a low molecular weight fluid diluent that preferentially locates within and swells the amorphous domains of the block or graft copolymer, while preserving the crystallinity of the semicrystalline block domains. After mechanical or thermomechanical processing, such compositions combine softness with high strength and high recoverable elasticity. Compositions are also disclosed whereby the diluent species is removed from the composition, either before or after the mechanical or thermomechanical processing, in order to create a strong elastic material with an ultra-low entanglement density within the amorphous domains.
    Type: Grant
    Filed: April 8, 2008
    Date of Patent: March 31, 2015
    Assignee: The Regents of the University of California
    Inventors: Glenn H. Fredrickson, Edward J. Kramer, Zhigang Wang
  • Publication number: 20150048549
    Abstract: A film (F) is transported with one end side in a width direction moved relatively in a preceding manner and the other end side moved relatively in a delayed manner and thus the film (F) is stretched in an oblique direction with respect to the width direction. In the individual positions of the film (F) in the width direction, the film (F) is asymmetrically heated in the width direction such that the amount of displacement (?L) of an orientation angle from a desired angle caused by bowing (Bo) asymmetrically produced in the width direction by the stretching of the film (F) in the oblique direction is reduced, and thus a maximum value in the temperature distribution of the film (F) is present between a center portion in the width direction and any one of end portions.
    Type: Application
    Filed: March 30, 2012
    Publication date: February 19, 2015
    Applicant: Konica Minolta, Inc.
    Inventors: Shinji Inagaki, Daisuke Hojo, Shimpei Hatakeyama, Daisuke Ueno, Hiroshi Nanbu
  • Patent number: 8957183
    Abstract: The present invention concerns yarns comprising copolymer derived from the copolymerization of para-phenylenediamine, 5(6)-amino-2-(p-aminophenyl)benzimidazole; and terephthaloyl dichloride wherein the ratio of moles of 5(6)-amino-2-(p-aminophenyl)benzimidazole to the moles of para-phenylenediamine is 30/70 to 85/15; the yarn having a sulfur content greater than 0.1%; and the hydrolytic strength retention of the yarn is greater than 60%. The invention also concerns processes for making such yarns.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: February 17, 2015
    Assignee: E I du Pont de Nemours and Company
    Inventors: Warren Francis Knoff, Christopher William Newton
  • Patent number: 8945909
    Abstract: The invention relates to tunable elastomeric nanochannels for nanofluidic manipulation. In particular, the present invention relates to nanochannels for performing biological assays.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: February 3, 2015
    Assignee: The Regents of the University of Michigan
    Inventors: Shuichi Takayama, Michael David Thouless, Dongeun Huh, Kristen L. Mills, Nicholas Joseph Douville
  • Publication number: 20150018468
    Abstract: A molded article selected from the group consisting of (1) a sheet or a film, (2) a thermoformed article, (3) a stretched film, wherein the molded article is made of a polyester resin composition containing a polyester resin and a polyester-based plasticizer represented by the following formula (I): R1O—CO—R2—CO—[(OR3)mO—CO—R2—CO—]nOR1 (I), wherein R1 is an alkyl group having from 1 to 4 carbon atoms, R2 is an alkylene group having from 2 to 4 carbon atoms, R3 is an alkylene group having from 2 to 6 carbon atoms, m is the number of from 1 to 6, and n is the number of from 1 to 12, with proviso that all the R2's may be identical or different, and that all the R3's may be identical or different.
    Type: Application
    Filed: February 7, 2013
    Publication date: January 15, 2015
    Inventors: Hiroki Sawada, Shigehisa Kamimura
  • Publication number: 20150008617
    Abstract: The invention relates to a method and a device for producing a three-dimensional preform (19) from a fibre fabric (1) as part of production of fibre-reinforced formed components, comprising a draping device (3) and a transport device (21) for the fibre fabric (1), wherein said draping device (3) at least comprises a draping form (18) for a fibre fabric (3) and means, movable in relation to the draping form (18), for reshaping the fibre fabric (3) on the basis of the contour of the draping form (18). The problem addressed by the invention is that of ensuring swift yet high-quality reshaping, particularly of large-area and/or complex geometries of a preform. To solve the method problem, the invention states that the transport device (21) successively releases the fibre fabric (1) in the direction of the draping form (18) and the released regions of the fibre fabric (1) are fixed and/or draped on the draping form by means of a fixing stamp (4) and/or a draping stamp (5).
    Type: Application
    Filed: January 18, 2013
    Publication date: January 8, 2015
    Inventors: Matthias Graf, Tobias Fuerst, Steffen Maertiens
  • Patent number: 8920694
    Abstract: A material layering device may include a first pinning roller and a second pinning roller. A distance between the first pinning roller and the second pinning roller is less than a diameter of a substrate. The device also includes a return system, wherein the return system comprises a plurality of rollers. The device also includes a belt, which may have a first loop portion disposed between and protruding beyond the first pinning roller and the second pinning roller. The first loop portion also wraps about an intended substrate along an arc greater than about 180 degrees. The device further includes a feed portion coupled to the first loop and extending outwardly from the second pinning roller opposite the first loop and providing a surface upon which a sheet can be placed. Furthermore, the device also includes an adjustment mechanism coupled to one of the rollers.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: December 30, 2014
    Assignee: Gold Tip, LLC
    Inventor: Marvin Carlston
  • Patent number: 8916081
    Abstract: A method for using a Poisson's ratio material includes a carbon nanotube film structure is provided. The carbon nanotube film structure includes a plurality of carbon nanotubes. A first part of the carbon nanotubes are aligned a first direction, a second part of the carbon nanotubes are aligned a second direction. The first direction is substantially perpendicular to second direction. When the Poisson's ratio material is stretched or compressed substantially along the first or second direction, a Poisson's ratio value is negative.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: December 23, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Lu-Zhuo Chen, Chang-Hong Liu, Jia-Ping Wang, Shou-Shan Fan
  • Publication number: 20140367325
    Abstract: This invention relates to a multi-stage stretching operation for production of expanded stretched porous polytetrafluoroethylene (ePTFE) fibrous materials with minimal node size and minimized filament sizes. A plurality of stretching or expansions may be implemented on the film including combinations of MDO and TDO stretches including at least two longitudinal stretches and at least one transverse stretch. Subsequent stretches occur at rates generally less than a prior similar longitudinal or transverse type of expansion.
    Type: Application
    Filed: June 12, 2009
    Publication date: December 18, 2014
    Inventors: Kyung-Ju Choi, Yoshiyuki Shibuya, Kunihiko Inui
  • Patent number: 8911655
    Abstract: A method for producing a film having a fine irregular pattern intermittently includes feeding a film to be processed intermittently from upstream side to the vicinity of the surface of a die having a fine irregular pattern, transferring the pattern to the surface of the film by pressing the film against the surface of a die, stripping the processed film on which a pattern is formed from the surface of a die, and then feeding a new film to be processed to the die, wherein the processed film is stripped from the surface of a die by gripping and moving the processed film to the upstream side, and then the processed film is fed by a length of intermittent feed to the surface of a die while preventing the processed film from creasing.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: December 16, 2014
    Assignee: Toray Industries, Inc.
    Inventors: Kiyoshi Minoura, Yuma Hirai, Fumiyasu Nomura
  • Patent number: 8906540
    Abstract: The invention relates to a biaxially oriented microporous film composed of at least three coextruded layers encompassing an internal cut-off layer and two external layers, wherein all three layers contain a mixture of propylene homopolymer and propylene block copolymer and ?-nucleation agent. The propylene block copolymer I of the external layers has a melting point exceeding 140° C. and the propylene block copolymer II of the internal layer has a melting range starting at a temperature ranging from 50 to 120° C. and the melting point of the propylene block copolymer I is greater than the melting point of the propylene block copolymer II.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: December 9, 2014
    Assignee: Treofan Germany GmbH & Co. KG
    Inventors: Thilo Mohr, Detlef Busch, Bertram Schmitz, Christian Peters
  • Publication number: 20140349168
    Abstract: Provided is a method for reproducibly and efficiently producing a polyolefin porous film having a porous structure suitable for a separator for a battery without requiring a special apparatus. The method according to the present invention is a method for producing a polyolefin porous film, the method including conveying a raw material polyolefin sheet having pores into a furnace of a tenter type stretching machine, and tenter-stretching the sheet in a plurality of stretching regions in the furnace to produce a polyolefin porous film, wherein the plurality of stretching regions include at least two stretching regions having different film widening speeds, and the temperature of a stretching region having a high film widening speed is lower than that of a stretching region having a low film widening speed in the at least two stretching regions, and a stretching region having the highest film widening speed is situated in the front stage with respect to a stretching region having the lowest film widening speed.
    Type: Application
    Filed: August 8, 2014
    Publication date: November 27, 2014
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Daizaburo YASHIKI, Toshiki INNAMI
  • Patent number: 8894901
    Abstract: A method of making a sheet of building material, useful for roofing or siding applications, and the sheet material made by such method. A mixture of a thermoplastic resin and mineral filler is prepared, the resin comprising about 10% to 40% by weight of the mixture and the filler comprising about 60% to 90% by weight. The mixture is mixed at a temperature above the melting point of the resin and is formed into a sheet at such temperature. The sheet is allowed to cool until the surface is at a temperature below the midpoint of the melting range of the thermoplastic resin, e.g. in the range of 210 to 220 degrees F. (99 to 104 degrees C.), for polyethylene, at which point it is strained by passing it through calendering rollers. The sheet material made by this process, having a high concentration of mineral filler, is fire resistant, durable, ductile, of moderate weight and resistant to weathering. It can be produced using relatively inexpensive manufacturing equipment.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: November 25, 2014
    Assignee: G.R. Green Building Products Inc.
    Inventors: Geoffrey F. Wensel, Robert W. Suggitt
  • Publication number: 20140317881
    Abstract: A hinge element has at least one planar structure made of a thermoplastic material. Following a stretching process, the thermoplastic material undergoes a shrinking process under the effects of heat.
    Type: Application
    Filed: June 9, 2012
    Publication date: October 30, 2014
    Applicant: Universitat Kassel
    Inventors: Hans-Peter Heim, Nina Lieven, Angela Ries, Dominik Sennhenn
  • Patent number: 8871298
    Abstract: A method for preparing a flexible film substrate with a low glass transition temperature can be used in the production of an article that retains dimensions and improves the surface smoothness after high temperature processing. The invention, for example, would enable low temperature films such as PET and PEN to be dimensionally stable and ultra flat at conditions commonly used in electronic processing which can typically exceed 200° C. More specifically, the methods enable the use of e.g. barrier films based on PET or PEN in OLED/PLED manufacturing.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: October 28, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Mark A. Roehrig, Yufeng Liu, Robert W. Peterson
  • Publication number: 20140300033
    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: Application
    Filed: March 31, 2014
    Publication date: October 9, 2014
    Applicant: TriVascular, Inc.
    Inventors: Joseph W. Humphrey, Jeffrey B. Skiba
  • Publication number: 20140273703
    Abstract: Fibrous materials and methods of manufacturing fibrous materials are disclosed. In particular, this application discloses methods of making and processing serially deposited fibrous structures, such as serially deposited fibrous mats. Serially deposited fibrous mats may be used in implantable medical devices with various characteristics and features. Serially deposited fibrous mats of various mat thickness, fiber size, porosity, pore size, and fiber density are disclosed. Additionally, serially deposited fibrous mats having various amounts of fiber structures (such as intersections, branches, and bundles) per unit area are also disclosed.
    Type: Application
    Filed: March 12, 2014
    Publication date: September 18, 2014
    Applicant: Merit Medical Systems, Inc.
    Inventors: Wayne L. Mower, John William Hall, Rachel L. Simmons, Bart Dolmatch, F. Mark Ferguson
  • Patent number: 8826636
    Abstract: The invention relates to a method for obtaining high-tenacity aramid yarn, wherein the yarn is made of a copolymer obtained from a mixture of monomers comprising DAPBI, an aromatic para-diamine, and an aromatic para-diacid, wherein the yarn is heated in at least two process steps, characterized in that in a first step the yarn is heated at a temperature of 200 to 360° C. at a tension of at least 0.2 cN/dtex, followed by a second step wherein the yarn is heated at a temperature of 370 to 500° C. at a tension of less than 1 cN/dtex. The invention further pertains to a multifilament aramid yarn spun from a sulfuric acid spin dope and having a tenacity of at least 2500 mN/tex.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: September 9, 2014
    Assignee: Teijin Aramid B.V.
    Inventors: Hanneke Boerstoel, Johannes Bos, Adriaan Anton Schaap, Dennis Wilbers, Leonardus Antonuis Godfried Busscher, Antonius Henricus Maria Schotman, Kurt Rainer Hans-Heinrich Stolze
  • Patent number: 8829121
    Abstract: The invention provides a piezoelectric polymer material comprising a helical chiral polymer having a weight average molecular weight of from 50,000 to 1,000,000 and optical activity, the piezoelectric polymer material having: crystallinity as obtained by a DSC method of from 20% to 80%; a transmission haze with respect to visible light of 50% or less; and a product of the crystallinity and a standardized molecular orientation MORc, which is measured with a microwave transmission-type molecular orientation meter at a reference thickness of 50 ?m, of from 40 to 700.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: September 9, 2014
    Assignees: Mitsui Chemicals, Inc., A School Corporation Kansai University
    Inventors: Mitsunobu Yoshida, Shunsuke Fujii, Hitoshi Onishi, Yoshiro Tajitsu, Taizo Nishimoto, Kazuhiro Tanimoto, Kenichi Goto
  • Publication number: 20140225309
    Abstract: Disclosed is a bottle for containing a beverage which has plastic body. The bottle includes a bottom surface having a non-sliding element located to be in contact with a surface when the bottle is in the upright position. In addition or alternately, the bottle includes a neck portion which has at least two spaced apart circumferential ribs. Preferably, each of the ribs is disposed normal to a vertical axis of the bottle in its upright position. In another embodiment of the invention, the ribs are continuous along the exterior of the neck.
    Type: Application
    Filed: March 24, 2014
    Publication date: August 14, 2014
    Applicant: FIELD MANUFACTURING CORP.
    Inventor: Patrick Frank Field
  • Patent number: 8795461
    Abstract: A method for stretching a carbon nanotube film includes providing one or more carbon nanotube films and one or more elastic supporters, attaching at least one portion of the one or more carbon nanotube films to the one or more elastic supporters, and stretching the elastic supporters.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: August 5, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Kai-Li Jiang, Chen Feng, Lin Xiao, Zhuo Chen, Liang Liu, Shou-Shan Fan, Qun-Qing Li, Li Qian, Kai Liu, Yang Wei
  • Patent number: 8790559
    Abstract: Provided is a method of manufacturing a microporous polyolefin film useable as a battery separator, which is easy to control strength, permeability and shrinking properties of the microporous film and embodies excellent quality uniformity and production stability in fabricating the microporous film.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: July 29, 2014
    Assignee: SK Innovation Co., Ltd.
    Inventors: Gwi Gwon Kang, Jang-Weon Rhee, In Hwa Jung
  • Patent number: 8771569
    Abstract: The present invention pertains to a polyethylene film and a process for manufacturing such film. The polyethylene film may have a ratio between the strength in a first direction in the film plane and the strength in a second direction in the film plane perpendicular to the first direction in the range of 0.1-10:1, the strength in at least one direction being at least 0.2 Gpa. The process for manufacturing a polyethylene film may have a starting UHMWPE polymer with an average molecular weight of at least 500,000 grams/mole, an elastic shear modulus determined directly after melting at 160° C. of at most 1.4 MPa, and a Mw/Mn ratio of at most 6 to a solvent-free compacting process and a stretching process under such conditions that at no point during the process the temperature of the intermediate polymer film is raised to a value above its melting point.
    Type: Grant
    Filed: January 6, 2010
    Date of Patent: July 8, 2014
    Assignee: Teijin Aramid B.V.
    Inventors: Joris Eem Van Der, Johannes Bos, Anton Peter De Weijer, Sanjay Rastogi, Gerwin Elderman
  • Patent number: 8758540
    Abstract: A method for laying carbon nanotube film includes following steps. A carbon nanotube film is provided. The carbon nanotube film includes a number of carbon nanotube strings substantially parallel to each other and extending along a first direction. The carbon nanotube film is stretched along a second direction substantially perpendicular with the first direction to form a deformation along the second direction. The carbon nanotube film is placed on a surface of a substrate. The deformation along the second direction is kept.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: June 24, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Kai-Li Jiang, Chen Feng, Lin Xiao, Zhuo Chen, Liang Liu, Shou-Shan Fan, Qun-Qing Li, Li Qian, Yang Wei
  • Publication number: 20140166176
    Abstract: This disclosure is directed to a tire innerliner comprising a dynamically vulcanized alloy of an elastomer and an engineering resin; wherein the innerliner is contoured. The disclosure further relates to methods of making such innerliners and tires made from such innerliners.
    Type: Application
    Filed: December 6, 2011
    Publication date: June 19, 2014
    Applicant: ExxonMobil Chemical PAtents Inc.
    Inventors: Michael Brendan Rodgers, Porter C. Shannon, Jianyn John Cheng, Matthew B. Measmer, Peter W. Manders
  • Publication number: 20140162042
    Abstract: Disclosed is a shrink film containing a copolyester having a minimum crystallization half-time of at least 8.6 minutes and a polyester plasticizer having a weight-average molecular weight of 900 to 12,000 g/mol. The polyester plasticizer includes (i) a polyol component comprising residues of a polyol having 2 to 8 carbon atoms, and (ii) a diacid component comprising residues of a dicarboxylic acid having 4 to 12 carbon atoms.
    Type: Application
    Filed: December 12, 2012
    Publication date: June 12, 2014
    Applicant: EASTMAN CHEMICAL COMPANY
    Inventors: Wayne Ken Shih, Kimberley Carmenia Carico, Nancy Ellen Kinkade
  • Patent number: 8747713
    Abstract: Flexible tubular film (10) is helically cut into a flat strip by unwinding the tubular film in flattened form by a tumbling unwinder (1), advancing the flat film tube to a tube expansion zone (17) in which the flat tube is expanded into a circular cylindrical tube and is passed axially over a hollow mandrel (14) slightly lower in external diameter than the diameter of the expanded tube to be cut by knife (18) helically while on the mandrel into a flat strip that is removed at an angle to the mandrel axis. The flat tube is longitudinally stretched by stretching rollers (107-112), which tumble with the tumbling unwinder. The apparatus further comprises stabilization means for stabilizing the orientation applied by the tumbling stretching rollers, applied to the helically cut film strip after it has been drawn from the mandrel.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: June 10, 2014
    Inventors: Ole-Bendt Rasmussen, Nikolaj Wettergren Rasmussen
  • Patent number: 8728371
    Abstract: A method of producing a stretched film comprising melt-coextruding a thermoplastic resin A and a thermoplastic resin B to produce a composite film 1 having both-end films 2 of the thermoplastic resin B arranged in parallel at both end portions of the main film 1a of the thermoplastic resin A in the direction of width thereof, stretching the composite film, and cutting and removing both end portions of the stretched film in the direction of width, wherein a film stretch stress value of the both-end films 2 is larger than a film stretch stress value of the main film 1a at the same stretching ratio. This minimizes an increase in the thickness at both end portions of the film in stretching the film and decreases the widths by which both end portions of the expensive resin film are to be cut and removed for producing a film.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: May 20, 2014
    Assignee: Toyo Kohan Co., Ltd.
    Inventors: Norimasa Maida, Yoshimi Itoh, Toshiyuki Ueda
  • Patent number: 8709191
    Abstract: A nonwoven composite that exhibits latent elastic properties is provided. The composite is formed from a multi-layered, elastic film laminated to a nonwoven web facing. Latent elasticity is imparted to the composite through the use of at least one base layer that contains a thermoplastic elastomer and at least one skin layer that contains a propylene/?-olefin copolymer. During formation, the film is stretched in one or more directions to orient the elastomer chains. Without intending to be limited by theory, the present inventors believe that the oriented state of the chains may be held in place by the relatively stiff semi-crystalline domains of the propylene/?-olefin copolymer. The stretched elastic film may subsequently be relaxed and bonded to a nonwoven web facing to form the composite. The composite may be later activated (e.g., heated at or above the softening point of the copolymer) to soften the crystalline domains and allow the chains to return to their unoriented state.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: April 29, 2014
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Janis Wilson Hughes, Glynis Alicia Walton, Patricia H. Calhoun, Oomman P. Thomas
  • Patent number: 8685300
    Abstract: The present invention relates to a thermoforming device for thermoforming a product (1) from a plastic foil (23), and to a corresponding method. The invention relates particularly to a thermoforming process and device in which a slot (2) is arranged in a product (1) to be formed. The invention also relates to a product (1), particularly a flowerpot, manufactured using this thermoforming device or method. The thermoforming device is characterized in that the cutting sleeve (10) and cutting plate (7) and/or hold-down element (8) define an auxiliary cutting line through which the plastic foil (23) is cut in order to arrange a slot (2) in the product (1) to be formed. The functions of slot-forming and product-foil separation are hereby performed by substantially the same components.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: April 1, 2014
    Assignee: Bosch Sprang Beheer B.V.
    Inventors: Antoni Bosch, Martijn Haex
  • Publication number: 20140069244
    Abstract: Systems and processes for die-cutting stretched base films are disclosed. In some examples, the systems can include fixed or adjustable die-cut heads that are offset from one another based on an amount of distortion of the base film. Systems and processes for reducing the amount of distortion or shrinking of base films are also disclosed. In some examples, the processes can include pre-shrinking the base film by exposing the film to elevated temperatures sufficient to shrink the film. The pre-shrinking can be performed on the base film material alone, or can be applied during subsequent annealing stages. The pre-shrinking can be used alone or in combination with the offset die-cutters.
    Type: Application
    Filed: December 10, 2012
    Publication date: March 13, 2014
    Applicant: Apple Inc.
    Inventors: Siddharth Mohapatra, Sunggu Kang, John Z. Zhong
  • Patent number: 8663530
    Abstract: A water-proof sound-transmitting membrane 10 includes a polytetrafluoroethylene porous membrane 1 and has a surface density of 1 to 20 g/m2. The polytetrafluoroethylene porous membrane 1 includes a first porous layer 1a, and a second porous layer 1b stacked on and integrated with the first porous layer 1a by a binding force acting between polytetrafluoroethylene matrices.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: March 4, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Yuri Horie, Kouji Furuuchi
  • Patent number: 8658263
    Abstract: Provided are a shape-retaining film which has excellent adhesion to inks and other functional layers while retaining high shape-retaining properties and a process for producing the shape-retaining film. The shape-retaining film comprises an ethylene homopolymer or an ethylene/a-olefin copolymer having a C3-6 a-olefin content less than 2 wt. %, the ethylene homopolymer or copolymer having a density of 950 kg/m3 or higher and a weight-average molecular weight (Mw)/number-average molecular weight (Mn) ratio of 5-20. The film has a tensile elasticity modulus of 6-50 GPa and has either an angle of recovery from 90 bending of 8 or less or an angle of recovery from 180 bending of 65 or less.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: February 25, 2014
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Tamio Kawasumi, Michio Eriguchi, Shigeo Nishikawa
  • Patent number: 8648151
    Abstract: The invention provides a piezoelectric polymer material including a helical chiral polymer having a weight average molecular weight of from 50,000 to 1,000,000 and having optical activity, the piezoelectric polymer material having a piezoelectric constant d14 at 25° C. of 10 pC/N or more, a degree of crystallinity obtained by X-ray diffraction of from 40% to 80%, and a haze of from 0.5 to 30.
    Type: Grant
    Filed: March 15, 2010
    Date of Patent: February 11, 2014
    Assignees: Mitsui Chemicals, Inc., A School Corporation Kansai University
    Inventors: Mitsunobu Yoshida, Masanobu Ajioka, Kenichi Goto, Ichiro Fujio, Takaharu Isaki, Takayuki Onogi, Yoshiro Tajitsu, Shinichi Usugi, Takeshi Karino, Yoshiaki Aso
  • Patent number: 8647553
    Abstract: In a process of producing a stretch sheet, a strip-shaped laminate sheet 10A having an elastically stretchable elastic layer 1 and substantially inelastic, inelastic fiber layers 2 and 3 partially joined to each other at bonds 4 or a strip-shaped fibrous sheet containing an elastic component and a substantially inelastic component and having embossed regions formed by embossing in parts is stretched in directions starting from the bonds 4 or the embossed regions to obtain a stretch sheet 10. The stretch sheet has raised ridges and recessed grooves extending in the direction perpendicular to the stretch direction, and the bonds 4 or the embossed regions are present in the ridges.
    Type: Grant
    Filed: April 25, 2006
    Date of Patent: February 11, 2014
    Assignee: Kao Corporation
    Inventors: Hideyuki Kobayashi, Koji Kanazawa, Akihiko Gunji, Tetsuya Masuki
  • Patent number: 8641408
    Abstract: The invention relates to a device for stretching film sections in a monoaxial or biaxial manner, preferably by way of a tenter frame, for films made substantially of polymers, wherein a square or rectangular section of a such film is seized at 4 sides by at least two tenter hooks each, designed as regards improved stretching such that the upper tenter hook part (11) is mounted in an articulated fashion on a rotational axis located outside the film to be stretched, and specifically such that the lower, fixed tenter hook part (13) carries the joint, while the upper tenter hook part (11) is designed so as to pivot upwards and at least one cylinder (14) is disposed rotated by 90° for applying the tensioning power and thus applies the tensioning power to the upper pivotable tenter hook part (11).
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: February 4, 2014
    Assignee: Dr. Collin GmbH
    Inventor: Heinrich Collin
  • Patent number: 8623256
    Abstract: A process for simultaneously activating two or more portions of a web in different directions. The process involves feeding a web into an apparatus that includes a pair of intermeshing activation rolls having three dimensional surface features configured to simultaneously activate different portions a web in different directions. The three dimensional surface features are arranged in discrete regions on the rolls such that at least two of the regions provide different directions of activation. The rolls include one or more buffer regions positioned between the discrete regions on the roll that provide different directions of activation.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: January 7, 2014
    Assignee: The Procter & Gamble Company
    Inventors: Khalid Qureshi, Fred Naval Desai
  • Patent number: 8623472
    Abstract: A cellulose acylate film is provided and has a surface where a first in-plane orientation in a portion from 0 to 3 ?m in depth from the surface is lower than a second in-plane orientation in a portion from 3 ?m to 10 ?m in depth from the surface.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: January 7, 2014
    Assignee: FUJIFILM Corporation
    Inventors: Yasuyuki Sasada, Hajime Nakayama, Shinya Watanabe, Kunihiro Atsumi
  • Patent number: 8617445
    Abstract: The present invention provides a process for producing an oriented thermoplastic polyester resin sheet which is excellent in tensile strength, tencile modulas and heat resistance, and a light laminate-molded body using the same, which has a low linear expansion coefficient and is excellent in impact resistance, durability, easiness of handling, productivity, and others. A process for producing an oriented thermoplastic polyester resin sheet, which includes: pultrusion-drawing a thermoplastic polyester resin sheet in an amorphous state at a temperature from the glass transition temperature of the thermoplastic polyester resin ?20° C. to the glass transition temperature of the thermoplastic polyester resin +20° C.; and then drawing the resultant uniaxially at a temperature higher than the temperature for the pultrusion-drawing. A laminate-molded body, wherein a thermoplastic resin layer is laminated on each of the surfaces of the resultant oriented thermoplastic polyester resin sheet.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: December 31, 2013
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Shigeru Ogasawara, Hirotsugu Yoshida, Hisashi Eguchi, Ryuichi Matsuo
  • Publication number: 20130341829
    Abstract: A method for using a Poisson's ratio material includes a carbon nanotube film structure is provided. The carbon nanotube film structure includes a plurality of carbon nanotubes. A first part of the carbon nanotubes are aligned a first direction, a second part of the carbon nanotubes are aligned a second direction. The first direction is substantially perpendicular to second direction. When the Poisson's ratio material is stretched or compressed substantially along the first or second direction, a Poisson's ratio value is negative.
    Type: Application
    Filed: August 22, 2013
    Publication date: December 26, 2013
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITY
    Inventors: LU-ZHUO CHEN, CHANG-HONG LIU, JIA-PING WANG, SHOU-SHAN FAN
  • Patent number: 8609005
    Abstract: [Problems] To provide a stretched film of an addition polymer consisting of norbornene compounds favorable for use in manufacturing steps of electric insulating parts and optical parts that exhibits excellent film stability, does not suffer from coloration and has a low linear expansion coefficient. [Means for Solving Problems] A stretched film of an addition polymer consisting of norbornene compounds produced by stretching a film of the addition polymer consisting of norbornene compounds and having a linear expansion coefficient of at most 50 ppm/° C. The draw ratio is preferably from 1.2 times to 10 times. The stretched film is preferably a non-crosslinked film. A method for producing the stretched film comprises stretching a film of the addition polymer consisting of norbornene compounds at least in one direction in an inert gas atmosphere within a temperature range of the glass transition temperature (Tg) thereof ±50° C.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: December 17, 2013
    Assignee: Zeon Corporation
    Inventors: Yoshihisa Takeyama, Atsushi Ishiguro
  • Publication number: 20130329765
    Abstract: To provide a practical infrared transmissive protective cover capable of detecting a heating abnormality of an internal heating element and the like by visual observation and by using infrared rays. The infrared transmissive protective cover includes a light transmission section, the light transmission section is made of a resin sheet containing a resin composition, and a total light transmittance of the light transmission section in a visible light region is 70% or more, and an average infrared transmittance in a wavelength range of 8 to 14 ?m is 5% or more.
    Type: Application
    Filed: December 13, 2011
    Publication date: December 12, 2013
    Applicants: THE JAPAN ATOMIC POWER COMPANY, THERMOGRAPHERS CO., LTD., ASAHI KASEI ENGINEERING CORPORATION, ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Tsuyoshi Nishikawa, Shigeo Nakamura, Kazuhiro Yonezawa, Hidenobu Takeyama, Hisakazu Higasa, Akihiro Hirashima, Tetsushi Matsunaga