Patents by Inventor Fenghua Deng

Fenghua Deng has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190153180
    Abstract: Disclosed herein is a method of producing a composite film that includes a biaxially oriented polyethylene terephthalate film substrate layer and a crosslinked layer on a surface thereof, wherein the crosslinked layer comprises a reaction product of a functionalized ethylene vinyl acetate copolymer comprising multiple COOH groups per molecule, wherein the functionalized ethylene vinyl acetate copolymer comprises 10-50 weight % of vinyl acetate monomer units and an organic crosslinker comprising multiple reactive groups per molecule, wherein the organic crosslinker is a melamine, said reactive groups being reactive with the COOH groups. The method also includes applying a solution comprising the functionalized ethylene vinyl acetate copolymer and the organic crosslinker in an organic solvent or mixture thereof to the biaxially oriented polyethylene terephthalate film substrate, followed by drying to form the crosslinked layer.
    Type: Application
    Filed: January 24, 2019
    Publication date: May 23, 2019
    Applicant: DuPont Teijin Films U.S. Limited Partnership
    Inventors: Shengsheng Liu, Fenghua DENG
  • Publication number: 20180257842
    Abstract: A laminate includes the following substantially coextensive layers in the following order: (a) a non-sealable, self-supporting, thermoformable copolyester film layer having a first surface and a second surface, the second surface constituting an outermost, exposed surface of the laminate; (b) a laminating adhesive layer on the first surface of the thermoformable copolyester film layer; and (c) a self-supporting, thermoformable structural film layer having a first surface and a second surface, the first surface contacting the laminating adhesive layer.
    Type: Application
    Filed: May 16, 2018
    Publication date: September 13, 2018
    Applicant: DuPont Teijin Films U.S. Limited Partnership
    Inventors: Fenghua DENG, Peter N. NUGARA, Stephen K. FRANZYSHEN, Reps M. HASKINS
  • Publication number: 20170218152
    Abstract: A composite film includes a polyester film substrate layer and a crosslinked layer on a surface thereof, wherein the crosslinked layer includes a reaction product of a) a functionalized ethylene vinyl acetate copolymer including multiple COOH groups or multiple alcoholic OH groups per molecule; and b) an organic crosslinker including multiple reactive groups per molecule, the reactive groups being reactive with the COOH or alcoholic OH groups; wherein the adhesion strength between the substrate layer and the crosslinked layer is at least 177 g/cm (450 g/inch). A method of joining the composite film, optionally further including a heat-sealable polymer layer on the crosslinked layer, to a container or a self-supporting film, includes contacting the crosslinked layer or the heat-sealable polymer layer with the container or the self-supporting film or under heat sealing conditions.
    Type: Application
    Filed: August 3, 2015
    Publication date: August 3, 2017
    Applicant: DuPont Teijin Films U.S. Limited Partnership
    Inventors: Shengsheng LIU, Fenghua DENG
  • Patent number: 9393763
    Abstract: A sealed container containing a foodstuff or beverage has a lid that includes a heat-sealable, composite film that includes a polymeric substrate layer having a first and second surface, a primer layer that includes PVdC disposed on the first surface, and a heat-sealable polymeric layer extrusion coated on the primer layer. The heat-sealable polymeric layer is 12 ?m thick or less and includes a copolymer having repeating monomeric units of ethylene and at least a second type of repeating monomeric unit having the formula [—CH2C(R1)(X)—] wherein: X is selected from —COOR2 and —OC(O)CH3; R1 =H or methyl; and R2 is H, C1-10 alkyl or a counterion M.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: July 19, 2016
    Assignee: DUPONT TEIJIN FILMS U.S. LIMITED PARTNERSHIP
    Inventors: David Voisin, Fenghua Deng
  • Patent number: 9073674
    Abstract: A multilayer film suitable for sealing containers such as used for food packaging, and methods of making the film, are described. The film is particularly suitable for sealing containers made from polylactic acid (PLA). The multilayer film includes: a) a substrate that includes a polymeric base layer; and b) on the substrate, a heatseal layer containing a PLA homopolymer or copolymer. The heatseal layer further includes dispersed therein an adhesion promoter, or alternatively the substrate further includes the adhesion promoter in a layer on a surface of the polymeric base layer between and adjacent the base layer and the heatseal layer. An antifog agent may also be included in the heatseal layer or on the surface of the heatseal layer opposite the substrate.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: July 7, 2015
    Assignee: DUPONT TEIJIN FILMS U.S. LIMITED PARTNERSHIP
    Inventor: Fenghua Deng
  • Publication number: 20150044403
    Abstract: A composite film includes a nylon base film and a coextensive layer of adhesive composition that includes one or more polymers, wherein the one or more polymers taken together include in polymerized form: a) ethylene; b) one or more ester-containing monomers, constituting in a range from 5 to 50 wt % of the one or more polymers; and c) one or more carboxylic acid-containing monomers and optionally salt(s) thereof, constituting in a range from 0.5 to 20 wt % of the one or more polymers. A package may be prepared, including a lid made from the composite film heat sealed to a tray. A bag for packaging raw or processed meat may be made from the composite film. A food item may be contained in the package or bag.
    Type: Application
    Filed: March 6, 2013
    Publication date: February 12, 2015
    Inventors: Fenghua Deng, Moira Tayler, Julian Neal Robinson
  • Patent number: 8840920
    Abstract: A composite structure suitable for making transdermal delivery devices includes in sequence: (a) a liner film layer; (b) a containment layer having from zero to 15 wt % content of vinyl acetate repeating units, the layer including either a thermal bonding copolyester resin or a combination of an ethylene-vinyl acetate component and a nonpolar polymer; and (c) a polyester film layer less than 20 ?m in thickness. A drug layer lies either between the liner film layer and the containment layer or within a concave depression in the containment layer. A composition including an ethylene-vinyl acetate component and an ABA block copolymer, wherein the A segments of the block copolymer are styrenic segments, is also provided. The composition includes between 1 and 15 wt % of vinyl acetate repeating units, based on the total weight of composition exclusive of any solvents.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: September 23, 2014
    Assignee: DuPont Teijin Films U.S. Limited Partnership
    Inventors: Peter N. Nugara, Bruce C. Begnoche, Stephen K. Franzyshen, Fenghua Deng, Daniel C. Sanders, Christine A. Creegan, Steven R. Cosentino
  • Publication number: 20130313260
    Abstract: A multilayer film suitable for sealing containers such as used for food packaging, and methods of making the film, are described. The film is particularly suitable for sealing containers made from polylactic acid (PLA). The multilayer film includes a) a substrate that includes a polymeric base layer; and b) on the substrate, a heatseal layer containing a PLA homopolymer or copolymer. The heatseal layer further includes dispersed therein an adhesion promoter, or alternatively the substrate further includes the adhesion promoter in a layer on a surface of the polymeric base layer between and adjacent the base layer and the heatseal layer. An antifog agent may also be included in the heatseal layer or on the surface of the heatseal layer opposite the substrate.
    Type: Application
    Filed: July 31, 2013
    Publication date: November 28, 2013
    Applicant: DuPont Teijin Films U.S. Limited Partnership
    Inventor: Fenghua Deng
  • Publication number: 20130236612
    Abstract: A laminate includes the following substantially coextensive layers in the following order: (a) a non-sealable, self-supporting, thermoformable copolyester film layer having a first surface and a second surface, the second surface constituting an outermost, exposed surface of the laminate; (b) a laminating adhesive layer on the first surface of the thermoformable copolyester film layer; and (c) a self-supporting, thermoformable structural film layer having a first surface and a second surface, the first surface contacting the laminating adhesive layer.
    Type: Application
    Filed: September 13, 2011
    Publication date: September 12, 2013
    Applicant: DuPont Teijin Films U.S. Limited Partnership
    Inventors: Fenghua Deng, Peter N. Nugara, Stephen K. Franzyshen, Reps M. Haskins
  • Patent number: 8507084
    Abstract: A multilayer film suitable for sealing containers such as used for food packaging, and methods of making the film, are described. The film is particularly suitable for sealing containers made from polylactic acid (PLA). The multilayer film includes a) a substrate that includes a polymeric base layer; and b) on the substrate, a heatseal layer containing a PLA homopolymer or copolymer. The heatseal layer further includes dispersed therein an adhesion promoter, or alternatively the substrate further includes the adhesion promoter in a layer on a surface of the polymeric base layer between and adjacent the base layer and the heatseal layer. An antifog agent may also be included in the heatseal layer or on the surface of the heatseal layer opposite the substrate.
    Type: Grant
    Filed: July 11, 2007
    Date of Patent: August 13, 2013
    Assignee: DuPont Teijin Films U.S. Limited Partnership
    Inventor: Fenghua Deng
  • Publication number: 20110163101
    Abstract: A multilayer film suitable for sealing containers such as used for food packaging, and methods of making the film, are described. The film is particularly suitable for sealing containers made from polylactic acid (PLA). The multilayer film includes a) a substrate that includes a polymeric base layer; and b) on the substrate, a heatseal layer containing a PLA homopolymer or copolymer. The heatseal layer further includes dispersed therein an adhesion promoter, or alternatively the substrate further includes the adhesion promoter in a layer on a surface of the polymeric base layer between and adjacent the base layer and the heatseal layer. An antifog agent may also be included in the heatseal layer or on the surface of the heatseal layer opposite the substrate.
    Type: Application
    Filed: July 11, 2007
    Publication date: July 7, 2011
    Applicant: DuPont Teijin Films U.S. Limited Partnership
    Inventor: Fenghua Deng
  • Publication number: 20110052789
    Abstract: A composite structure suitable for making transdermal delivery devices includes in sequence: (a) a liner film layer; (b) a containment layer having from zero to 15 wt % content of vinyl acetate repeating units, the layer including either a thermal bonding copolyester resin or a combination of an ethylene-vinyl acetate component and a nonpolar polymer; and (c) a polyester film layer less than 20 ?m in thickness. A drug layer lies either between the liner film layer and the containment layer or within a concave depression in the containment layer. A composition including an ethylene-vinyl acetate component and an ABA block copolymer, wherein the A segments of the block copolymer are styrenic segments, is also provided. The composition includes between 1 and 15 wt % of vinyl acetate repeating units, based on the total weight of composition exclusive of any solvents.
    Type: Application
    Filed: September 24, 2010
    Publication date: March 3, 2011
    Applicant: Dupont Teijin Films U.S. Limited Partnership
    Inventors: Peter N. Nugara, Bruce C. Begnoche, Stephen K. Franzyshen, Fenghua Deng, Daniel C. Sanders, Christine A. Creegan, Steven R. Cosentino
  • Publication number: 20100221391
    Abstract: The invention provides an ovenable vacuum skin package for storage and cooking of a food product. The package includes a receptacle and a thermoformable composite polymeric film cover heat-sealed thereto, and the composite polymeric film cover includes: (i) a thermoformable substrate layer comprising a first copolyester material; and (ii) on a surface of the substrate layer, a heat-sealable layer comprising a second copolyester material, the second copolyester material being different from the first copolyester material; wherein i. the receptacle comprises on a surface thereof a sealing region adapted to contact and form a scal with the heat-sealable layer; and ii. both the receptacle and the cover film comply with the requirements of paragraph h(1) of CFR §177.1630.
    Type: Application
    Filed: August 26, 2008
    Publication date: September 2, 2010
    Inventors: Fenghua Deng, Stephen K. Franzyshen
  • Publication number: 20100178318
    Abstract: A composite structure suitable for making transdermal delivery devices includes in sequence: (a) a liner film layer; (b) a containment layer having from zero to 15 wt. % content of vinyl acetate repeating units, the layer including either a thermal bonding copolyester resin or a combination of an ethylene-vinyl acetate component and a nonpolar polymer; and (c) a polyester film layer less than 20 ?m in thickness. A drug layer lies either between the liner film layer and the containment layer or within a concave depression in the containment layer. A composition including an ethylene-vinyl acetate component and an ABA block copolymer, wherein the A segments of the block copolymer are styrenic segments, is also provided. The composition includes between 1 and 15 wt. % of vinyl acetate repeating units, based on the total weight of composition exclusive of any solvents.
    Type: Application
    Filed: October 26, 2005
    Publication date: July 15, 2010
    Inventors: Peter N. Nugara, Bruce C. Begnoche, Stephen K. Franzyshen, Fenghua Deng, Daniel C. Sanders, Christine A. Creegan, Steven R. Cosentino
  • Publication number: 20100068355
    Abstract: A heat-sealable, coextruded composite polymeric film comprising a substrate layer comprising a first copolyester material having on a surface thereof a heat-sealable layer comprising a second copolyester material wherein: (i) the first and second copolyester materials are different from each other; (ii) the copolyester of the substrate layer comprises an aromatic dicarboxylic acid and a saturated aliphatic dicarboxylic acid of formula CnH2n(COOH)2 wherein n is 2 to 8; (iii) the heat-sealable layer comprises one or more wax(es); and (iv) the composite film is shrinkable or thermoformable; and the use thereof as a packaging film, particularly as, or in the manufacture of, a lidding film for heat-sealing to a receptacle containing a food product.
    Type: Application
    Filed: October 31, 2007
    Publication date: March 18, 2010
    Applicant: DUPONT TEIJIN FILMS U.S. LIMITED PARTNERSHIP
    Inventors: Michael R. Berry, William J. Brennan, Fenghua Deng, Daniel C. Sanders
  • Publication number: 20090098375
    Abstract: A heat-sealable, composite film comprising a polymeric substrate layer having a first and second surface, a primer layer disposed on the first surface of the substrate layer, and a heat-sealable polymeric layer disposed on the primer layer, wherein (i) the polymeric material of the primer layer comprises poly(vinylidene chloride)(PVdC); (ii) the thickness of the primer layer is in the range 0.
    Type: Application
    Filed: July 13, 2006
    Publication date: April 16, 2009
    Inventors: David Voisin, Fenghua Deng
  • Publication number: 20080131489
    Abstract: A composite structure suitable for making transdermal delivery devices includes in sequence: (a) a liner film layer; (b) a containment layer having from zero to 15 wt. % content of vinyl acetate repeating units, the layer including either a thermal bonding copolyester resin or a combination of an ethylene-vinyl acetate component and a nonpolar polymer; and (c) a polyester film layer less than 20 ?m in thickness. A drug layer lies either between the liner film layer and the containment layer or within a concave depression in the containment layer. A composition including an ethylene-vinyl acetate component and an ABA block copolymer, wherein the A segments of the block copolymer are styrenic segments, is also provided. The composition includes between 1 and 15 wt. % of vinyl acetate repeating units, based on the total weight of composition exclusive of any solvents.
    Type: Application
    Filed: October 26, 2005
    Publication date: June 5, 2008
    Inventors: Peter N. Nugara, Bruce C. Begnoche, Stephen K. Franzyshen, Fenghua Deng, Daniel C. Sanders, Christine A. Creegan, Steven R. Cosentino
  • Publication number: 20060222845
    Abstract: An anti-microbial polymeric film comprising a polymeric substrate layer having a first and second surface and on a surface thereof a coating having a thickness of from about 0.01 to about 14.0 gm and comprising an anti-microbial compound in an amount of from about 0.1 to about 50% by weight of the coating layer, characterised in that (i) said coating provides a heat-seal strength of from 100 g/in to 2500 g/in when heat-sealed to itself and/or (ii) said coating provides a barrier to water vapour and/or oxygen, such that the water vapour transmission rate is in the range of 0.01 to 10 g/100 inches2/day and the oxygen transmission rate is in the range of 0.01 to 10 cm3/100 inches2/day/atm.
    Type: Application
    Filed: January 7, 2004
    Publication date: October 5, 2006
    Inventors: Fenghua Deng, Stephen Franzyshen, Peter Nugara, William MacDonald
  • Publication number: 20060127463
    Abstract: A composite structure suitable for making transdermal delivery devices includes in sequence: (a) a liner film layer; (b) a containment layer having from zero to 15 wt % content of vinyl acetate repeating units, the layer including either a thermal bonding copolyester resin or a combination of an ethylene-vinyl acetate component and a nonpolar polymer; and (c) a polyester film layer less than 20 ?m in thickness. A drug layer lies either between the liner film layer and the containment layer or within a concave depression in the containment layer. A composition including an ethylene-vinyl acetate component and an ABA block copolymer, wherein the A segments of the block copolymer are styrenic segments, is also provided. The composition includes between 1 and 15 wt % of vinyl acetate repeating units, based on the total weight of composition exclusive of any solvents.
    Type: Application
    Filed: December 15, 2004
    Publication date: June 15, 2006
    Inventors: Peter Nugara, Bruce Begnoche, Stephen Franzyshen, Fenghua Deng, Daniel Sanders, Christine Creegan, Steven Cosentino
  • Patent number: 6432486
    Abstract: A method treats an article and more specifically an aircraft surface in order to prevent icing and to provide a coating that emits very low volatile organic compounds (VOC) during application and setting. Icing on critical aircraft surfaces creates dangerous conditions that impair the stability of the aircraft. The specific areas are referred to as “cold-soak” conditions and some areas on the “leading edges” of the wings. The invention eliminates icing on these surfaces. Ice will not form on the surface of certain polymer coatings with low surface energy such as Teflon. This is a consequence of the high contact angle between the water droplet and the surface that establishes a non-wetting surface. The invention implements such coatings and a deposition process. The coating may be used for other objects such as automobiles, consumer products, such as refrigerators, stoves, etc.
    Type: Grant
    Filed: August 15, 2000
    Date of Patent: August 13, 2002
    Assignee: Delta Airlines, Inc.
    Inventors: Henry G. Paris, Fenghua Deng, Charles L. Liotta, Charles A. Eckert, Zhengui Liu