Patents by Inventor Yunzhang Wang
Yunzhang Wang 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: 20120183720Abstract: A flexible spike and knife resistant composite incorporating a stack of at least ten consolidated layer groupings. Each layer grouping has a normalized stiffness of less than about 5 g/g/m2 as tested by a modified ASTM Test Method D6828-02 and contains one or two spike resistant textile layers, an adhesive layer, and one or two knife resistant textile layers. The spike resistant textile layers contain a plurality of interlocked yarns or fibers, where the yarns or fibers have a tenacity of about 8 or more grams per denier and the fiber size is less than ten denier per filament. The knife resistant textile layers contain monoaxially drawn fiber elements, where the fiber elements have an aspect ratio of greater than one and have a size greater than 100 denier per filament. The fiber elements of the knife resistant textile layer are bonded to each other or to the spike resistant layer.Type: ApplicationFiled: June 12, 2008Publication date: July 19, 2012Inventor: Yunzhang Wang
-
Publication number: 20120177861Abstract: An energy absorbing panel containing a pair of generally parallel spaced apart rigid end plates having a stiffness of at least about 200 N-m and a plurality of fabric layers extending between the rigid end plates oriented in a z-axis direction defined as being perpendicular to the rigid end plates. Each fabric layer contains a plurality of monoaxially drawn, thermoplastic fibers. The plurality of fabric layers are fused together forming a bonded structure. Methods of making the energy absorbing panel are also disclosed.Type: ApplicationFiled: November 25, 2008Publication date: July 12, 2012Inventors: Howell B. Eleazer, Heather J. Hayes, Yunzhang Wang
-
Patent number: 8147957Abstract: A consolidated fibrous structure including a multiplicity of fibrous layers. The fibers of each fibrous layer contain a core, a first layer and a second layer. The core has an exterior surface portion containing polypropylene. The first layer is disposed on at least a portion of the core and contains a first polymer. The first polymer contains a polymer having at least 70% ?-olefin units and is characterized by a melting temperature lower than the melting temperature of the exterior surface portion of the core. The second layer is disposed on at least a portion of the first layer and contains a second polymer.Type: GrantFiled: January 27, 2009Date of Patent: April 3, 2012Assignee: Milliken & CompanyInventors: Sujith Nair, Sasha Stankovich, Yunzhang Wang, Venkatkrishna Raghavendran
-
Publication number: 20120071054Abstract: A consolidated fibrous structure including a multiplicity of fibrous layers. Each fibrous layer comprises tape fibers, wherein the tape fibers contain a polypropylene core and a skin layer. At least a portion of the skin layers of the fibers in each fibrous layer are fused to at least a portion of other skin layers of fibers within the same fibrous layer and at least a portion of the skin layers of the fibers of each fibrous layer are fused with at least a portion of the skin layers of the fibers in an adjacent fibrous layer.Type: ApplicationFiled: November 30, 2011Publication date: March 22, 2012Inventors: Sujith Nair, Sasha Stankovich, Yunzhang Wang, Venkatkrishna Raghavendran
-
Patent number: 8133537Abstract: A method for forming multi-layered fiber including a core, a first layer, and a second layer. The core has an exterior surface portion containing polypropylene. The first layer is applied to at least a portion of the core and contains a first polymer. The first polymer contains a polymer having at least 70% ?-olefin units and is characterized by a melting temperature lower than the melting temperature of the exterior surface portion of the core. The second layer is applied to at least a portion of the first layer and contains a second polymer. The second polymer contains a co-polymer having at least 50% ?-olefin units and is characterized by a number-average molecular weight of about 7,000 g/mol to 50,000 g/mol, a viscosity of between about 2,500 and 150,000 cP measured at 170° C., and a melting temperature lower than the melting temperature of the exterior surface portion of the core.Type: GrantFiled: May 3, 2011Date of Patent: March 13, 2012Assignee: Milliken & CompanyInventors: Sujith Nair, Sasha Stankovich, Yunzhang Wang, Venkatkrishna Raghavendran
-
Patent number: 8119549Abstract: A consolidated fibrous structure including a multiplicity of fibrous layers. The fibers of each fibrous layer contain a core and a skin layer. The core has an exterior surface portion containing polypropylene. The skin layer is disposed on at least a portion of the core and contains a first polymer and a second polymer. The first polymer contains a polymer having at least 70% ?-olefin units and is characterized by a melting temperature lower than the melting temperature of the exterior surface portion of the core. The second polymer contains a co-polymer having at least 50% ?-olefin units and is characterized by a number-average molecular weight of about 7,000 g/mol to 50,000 g/mol, a viscosity of between about 2,500 and 150,000 cP measured at 170° C., and a melting temperature lower than the melting temperature of the exterior surface portion of the core. The viscosity of the second polymer is not greater than about 10 percent of the viscosity of the first polymer measured at 170° C.Type: GrantFiled: January 27, 2009Date of Patent: February 21, 2012Assignee: Milliken & CompanyInventors: Sujith Nair, Sasha Stankovich, Yunzhang Wang, Venkatkrishna Raghavendran
-
Patent number: 8114507Abstract: A multi-layered fiber containing a core and a skin layer. The core has an exterior surface portion containing polypropylene. The skin layer is disposed on at least a portion of the core and contains a first polymer and a second polymer. The first polymer contains a polymer having at least 70% ?-olefin units and is characterized by a melting temperature lower than the melting temperature of the exterior surface portion of the core. The second polymer contains a co-polymer having at least 50% ?-olefin units and is characterized by a number-average molecular weight of about 7,000 g/mol to 50,000 g/mol, a viscosity of between about 2,500 and 150,000 cP measured at 170° C., and a melting temperature lower than the melting temperature of the exterior surface portion of the core. The viscosity of the second polymer is not greater than about 10 percent of the viscosity of the first polymer measured at 170° C. Methods of forming the multi-layered fiber are also disclosed.Type: GrantFiled: January 27, 2009Date of Patent: February 14, 2012Assignee: Milliken & CompanyInventors: Sujith Nair, Sasha Stankovich, Yunzhang Wang, Venkatkrishna Raghavendran
-
Patent number: 8029633Abstract: A method of consolidating thermoplastic fibrous layers by providing a plurality of fibers having a core with an exterior surface portion comprising polypropylene and a first layer disposed on at least a portion of the core containing at least 70% alpha-olefin units which is formed into a first fibrous layer. A second fibrous layer is applied to the first fibrous layer which second layer contains a second polymer being a co-polymer having at least 50% alpha-olefin units which is characterized by a number-average molecular weight of about 7,000 to 50,000 g/mol, a viscosity of between about 2,500 and 150,000 cP measured at 170° C. and a melting temperature lower than the melting temperature of the exterior surface of the core. Heat and optionally pressure are applied to the assembly to consolidate the layers.Type: GrantFiled: January 27, 2009Date of Patent: October 4, 2011Assignee: Milliken & CompanyInventors: Sujith Nair, Sasha Stankovich, Yunzhang Wang, Venkatkrishna Raghavendran, Howell B. Eleazer
-
Publication number: 20110208145Abstract: A fluid management cover system of launderable and durable character including at least one fluid transport layer with at least one absorptive reservoir layer disposed in underlying relation to the fluid transport layer. The upper surface of the absorptive reservoir layer is characterized by a greater capillarity than the adjacent surface of the fluid transport layer such that fluid is drawn away from the fluid transport layer and is held within the absorptive reservoir layer. At least one pressure distribution layer incorporating material that at least partially recovers following compression is disposed at a position below the absorptive reservoir layer. An optional skin contacting layer may be disposed above the fluid transport layer and an optional backing layer may be disposed in underlying relation to other layers.Type: ApplicationFiled: February 2, 2011Publication date: August 25, 2011Inventors: Le Zhang, Yunzhang Wang, Carnevale Sally, Robert M. MacMeccan, Jeeyoung Choi, Keith A. Keller, Patrick R. Carroll, James M. Spry, Robert Champion
-
Publication number: 20110206849Abstract: A method for forming multi-layered fiber including a core, a first layer, and a second layer. The core has an exterior surface portion containing polypropylene. The first layer is applied to at least a portion of the core and contains a first polymer. The first polymer contains a polymer having at least 70% ?-olefin units and is characterized by a melting temperature lower than the melting temperature of the exterior surface portion of the core. The second layer is applied to at least a portion of the first layer and contains a second polymer. The second polymer contains a co-polymer having at least 50% ?-olefin units and is characterized by a number-average molecular weight of about 7,000 g/mol to 50,000 g/mol, a viscosity of between about 2,500 and 150,000 cP measured at 170° C., and a melting temperature lower than the melting temperature of the exterior surface portion of the core.Type: ApplicationFiled: May 3, 2011Publication date: August 25, 2011Inventors: Sujith Nair, Sasha Stankovich, Yunzhang Wang, Venkatkrishna Raghavendran
-
Patent number: 7958812Abstract: A flexible spike and ballistics panel having a strike surface and a rear surface. The panel contains a strike face grouping and a rear face grouping, where the normalized stiffness of each strike face layer is about 3 to 50 times greater than the normalized stiffness of each textile layer. The strike face grouping contains at least two strike face layers, each strike face layer having resin and high tenacity yarns, where the high tenacity yarns are in an amount of at least 50% by weight in each layer, where the high tenacity yarns have a tenacity of at least 5 grams per denier, and where the strike face grouping forms the strike surface of the panel. The rear face grouping contains at least ten layers of a spike resistant textile layer, each textile layer having a plurality of interwoven yarns or fibers having a tenacity of about 5 or more grams per denier, where at least one of the surfaces of the spike resistant textile layer contains about 10 wt.Type: GrantFiled: November 10, 2008Date of Patent: June 14, 2011Assignee: Milliken & CompanyInventors: Yunzhang Wang, Thomas Mabe
-
Patent number: 7960024Abstract: A multi-layered fiber including a core, a first layer, and a second layer. The core has an exterior surface portion containing polypropylene. The first layer is disposed on at least a portion of the core and contains a first polymer. The first polymer contains a polymer having at least 70% ?-olefin units and is characterized by a melting temperature lower than the melting temperature of the exterior surface portion of the core. The second layer is disposed on at least a portion of the first layer and contains a second polymer. The second polymer contains a co-polymer having at least 50% ?-olefin units and is characterized by a number-average molecular weight of about 7,000 g/mol to 50,000 g/mol, a viscosity of between about 2,500 and 150,000 cP measured at 170° C., and a melting temperature lower than the melting temperature of the exterior surface portion of the core. The viscosity of the second polymer is not greater than about 10 percent of the viscosity of the first polymer measured at 170° C.Type: GrantFiled: January 27, 2009Date of Patent: June 14, 2011Assignee: Milliken & CompanyInventors: Sujith Nair, Sasha Stankovich, Yunzhang Wang, Venkatkrishna Raghavendran
-
Publication number: 20110005379Abstract: A flexible spike and ballistics panel having a strike surface and a rear surface. The panel contains a strike face grouping and a rear face grouping, where the normalized stiffness of each strike face layer is about 3 to 50 times greater than the normalized stiffness of each textile layer. The strike face grouping contains at least two strike face layers, each strike face layer having resin and high tenacity yarns, where the high tenacity yarns are in an amount of at least 50% by weight in each layer, where the high tenacity yarns have a tenacity of at least 5 grams per denier, and where the strike face grouping forms the strike surface of the panel. The rear face grouping contains at least ten layers of a spike resistant textile layer, each textile layer having a plurality of interwoven yarns or fibers having a tenacity of about 5 or more grams per denier, where at least one of the surfaces of the spike resistant textile layer contains about 10 wt.Type: ApplicationFiled: November 10, 2008Publication date: January 13, 2011Inventors: Yunzhang Wang Wang, Thomas E. Mabe
-
Patent number: 7825048Abstract: A puncture resistant composite comprises a first textile layer and a second textile layer, each of which comprises a plurality of yarns or fibers having a tenacity of about 8 or more grams per denier. The layers are stacked so that the upper surface of the second textile layer is adjacent to the lower surface of the first textile layer. At least one of the lower surface of the first textile layer and the upper surface of the second textile layer comprises about 10 wt. % or less, based on the total weight of the textile layer, of a coating comprising a plurality of particles having a diameter of about 20 ?m or less. The coating can also comprise a binder. The composite can also be used in combination with other puncture resistant and/or ballistic resistant materials or components. A process for producing a puncture resistant composite is also provided.Type: GrantFiled: October 4, 2006Date of Patent: November 2, 2010Assignee: Milliken & CompanyInventors: Yunzhang Wang, Thomas E. Mabe
-
Publication number: 20100218878Abstract: Compositions and methods for treating textile substrates to obtain superior liquid repellent properties are disclosed. Durable microscopic surface structures imparted to the fibrous substrate allow liquids to bead up and roll off of its surface. Mechanical abrasion or sanding techniques may be used to create the microscopic surface structures on the surface of a fibrous textile substrate, without substantially breaking fibers, followed by a chemical treatment using, for example, fluorocarbon-containing repellent compositions. Particles may be employed in combination with repellent compositions to achieve superior repellent properties. A property of the roughened surface fibers, the Roughness Factor, is used to characterize the microscopic surface structures on the treated textile surface. Treated textile substrates are disclosed which achieve superior water and oil repellency, even after multiple abrasion or laundering cycles.Type: ApplicationFiled: May 14, 2010Publication date: September 2, 2010Inventors: Yunzhang Wang, Daniel T. McBride, Randolph S. Kohlman
-
Patent number: 7772141Abstract: An airbag fabric has a finish on a surface thereof, the finish comprising a plurality of particles having a diameter of about 20 ?m or less. A process for producing a coated airbag fabric comprises the steps of (a) providing an airbag fabric, (b) contacting at least one surface of the airbag fabric with a coating composition comprising a plurality of particles having a diameter of about 20 ?m or less, and (c) drying the fabric treated in step (b) to produce a finish on the airbag fabric.Type: GrantFiled: November 28, 2006Date of Patent: August 10, 2010Assignee: Milliken & CompanyInventors: Yunzhang Wang, Ramesh Keshavaraj
-
Publication number: 20100186880Abstract: A method of consolidating thermoplastic fibrous layers. The method begins with providing a plurality of fibers, where the fibers have a core with an exterior surface portion comprising polypropylene and a first layer disposed on at least a portion of the core. The first layer contains a first polymer, where the first polymer contains at least 70% ?-olefin units and is characterized by a melting temperature less than the melting temperature of the exterior surface of the core. These fibers are formed into a fibrous layer. Next, a second layer is applied to the fibrous layer such that the second layer covers at least a portion of the first layers of the fibers. The second layer contains a second polymer being a co-polymer having at least 50% ?-olefin units which is characterized by a number-average molecular weight of about 7,000 g/mol to 50,000 g/mol, a viscosity of between about 2,500 and 150,000 cP measured at 170° C.Type: ApplicationFiled: January 27, 2009Publication date: July 29, 2010Inventors: Sujith Nair, Sasha Stankovich, Yunzhang Wang, Venkatkrishna Raghavendran, Howell B. Eleazer
-
Publication number: 20100190005Abstract: A multi-layered fiber including a core, a first layer, and a second layer. The core has an exterior surface portion containing polypropylene. The first layer is disposed on at least a portion of the core and contains a first polymer. The first polymer contains a polymer having at least 70% ?-olefin units and is characterized by a melting temperature lower than the melting temperature of the exterior surface portion of the core. The second layer is disposed on at least a portion of the first layer and contains a second polymer. The second polymer contains a co-polymer having at least 50% ?-olefin units and is characterized by a number-average molecular weight of about 7,000 g/mol to 50,000 g/mol, a viscosity of between about 2,500 and 150,000 cP measured at 170° C., and a melting temperature lower than the melting temperature of the exterior surface portion of the core. The viscosity of the second polymer is not greater than about 10 percent of the viscosity of the first polymer measured at 170° C.Type: ApplicationFiled: January 27, 2009Publication date: July 29, 2010Inventors: Sujith Nair, Sasha Stankovich, Yunzhang Wang, Venkatkrishna Raghavendran
-
Publication number: 20100190398Abstract: A consolidated fibrous structure including a multiplicity of fibrous layers. The fibers of each fibrous layer contain a core and a skin layer. The core has an exterior surface portion containing polypropylene. The skin layer is disposed on at least a portion of the core and contains a first polymer and a second polymer. The first polymer contains a polymer having at least 70% ?-olefin units and is characterized by a melting temperature lower than the melting temperature of the exterior surface portion of the core. The second polymer contains a co-polymer having at least 50% ?-olefin units and is characterized by a number-average molecular weight of about 7,000 g/mol to 50,000 g/mol, a viscosity of between about 2,500 and 150,000 cP measured at 170° C., and a melting temperature lower than the melting temperature of the exterior surface portion of the core. The viscosity of the second polymer is not greater than about 10 percent of the viscosity of the first polymer measured at 170° C.Type: ApplicationFiled: January 27, 2009Publication date: July 29, 2010Inventors: Sujith Nair, Serbia Stankovich, Yunzhang Wang, Venkatkrishna Raghavendran
-
Publication number: 20100190399Abstract: A consolidated fibrous structure including a multiplicity of fibrous layers. The fibers of each fibrous layer contain a core, a first layer and a second layer. The core has an exterior surface portion containing polypropylene. The first layer is disposed on at least a portion of the core and contains a first polymer. The first polymer contains a polymer having at least 70% ?-olefin units and is characterized by a melting temperature lower than the melting temperature of the exterior surface portion of the core. The second layer is disposed on at least a portion of the first layer and contains a second polymer. The second polymer contains a co-polymer having at least 50% ?-olefin units and is characterized by a number-average molecular weight of about 7,000 g/mol to 50,000 g/mol, a viscosity of between about 2,500 and 150,000 cP measured at 170° C., and a melting temperature lower than the melting temperature of the exterior surface portion of the core.Type: ApplicationFiled: January 27, 2009Publication date: July 29, 2010Inventors: Sujith Nair, Sasha Stankovich, Yunzhang Wang, Venkatkrishna Raghavendran