Autogenously Bonded Nonwoven Fabric Patents (Class 442/409)
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Patent number: 11529267Abstract: This non-woven fabric comprises the following configuration. In this non-woven fabric for a liquid-permeable sheet of an absorbent article, said non-woven fabric comprising a thickness direction, a planar direction, a first face, and a second face: the non-woven fabric includes thermoplastic resin fibers, and cellulosic fibers, at least a portion whereof configures a plurality of fiber masses; the non-woven fabric further comprises a plurality of spaces which are adjacent to first regions of each of the plurality of fiber masses, said first regions facing the first face; and each of the plurality of fiber masses is not bonded to the thermoplastic resin fibers.Type: GrantFiled: October 17, 2016Date of Patent: December 20, 2022Assignee: UNICHARM CORPORATIONInventors: Takuya Miyama, Satoru Sakaguchi, Masashi Uda
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Patent number: 11319670Abstract: A recycled pulp that is reusable sanitary products is efficiently manufactured by recovering pulp fiber from used sanitary products containing the pulp fiber and a polymer absorbent. The method of the present invention comprises: a step applying a mechanical force to the used sanitary products in an aqueous solution containing a polyvalent metal ion or an acidic aqueous solution with a pH of 2.5 or lower and thus degrading the used sanitary products into the pulp fiber and other materials; a step separating the pulp fiber from the mixture of the pulp fiber and other materials that has been formed in the degradation step; and a step treating the pulp fiber thus separated with an ozone-containing aqueous solution with a pH of 2.5 or lower.Type: GrantFiled: February 10, 2020Date of Patent: May 3, 2022Assignee: UNICHARM CORPORATIONInventors: Takayoshi Konishi, Toshio Hiraoka
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Patent number: 11123227Abstract: A hot melt adhesive material and articles made using the hot melt adhesive to assemble structures in an article. The adhesive material typically is manufactured by blending amorphous polymer with a compatible amorphous polymer.Type: GrantFiled: November 30, 2017Date of Patent: September 21, 2021Assignee: The Procter & Gamble CompanyInventor: William L Bunnelle
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Patent number: 9963810Abstract: With a nonwoven fabric made of fibers mainly composed of amorphous polyetherimide having a melt viscosity at 330° C. from 100 to 3000 Pa·s and an average fiber diameter from 1 to 10 ?m, a nonwoven fabric which is excellent in flame retardancy and can have a small thickness within a range from 5 to 900 ?m with strength being maintained because of its denseness can be provided.Type: GrantFiled: June 26, 2014Date of Patent: May 8, 2018Assignee: KURARAY CO., LTD.Inventors: Masahiro Sasaki, Yasuhiro Shirotani
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Patent number: 9018112Abstract: Disclosed herein is a nonwoven fabric comprising within the range of from 50 to 99 wt %, by weight of the composition, of a reactor grade propylene-?-olefin copolymer possessing within the range of from 5 to 35 wt %, by weight of the copolymer, of units derived from one or more of ethylene and/or C4 to C12 ?-olefins; a melt flow rate (230° C./2.16 kg) within the range of from 500 to 7500 g/10 min; and a weight average molecular weight of less than 200,000; and a second polypropylene having a melting point, Tm, of greater than 110° C. and a melt flow rate (230° C./2.16 kg) within the range of from 20 to 7500 g/10 min; wherein the fabric has a CD Elongation value of greater than 50% (measuring the fabric of 35 g/m2 basis weight). The fabric described herein can be used in structures comprising one or more layers of the fabric described herein, and can include any number of other fabric layers made from other materials.Type: GrantFiled: August 4, 2008Date of Patent: April 28, 2015Assignee: ExxonMobil Chemicals Patents Inc.Inventors: Sudhin Datta, Derek Thurman, Chia Yung Cheng, Kuangyao B. Peng
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Patent number: 8987151Abstract: A fiber pad having a core non-woven layer is disclosed. The core layer can have an upper surface and a lower surface. The core layer can comprise at least one fiber layer. The at least one fiber layer can comprise a plurality of parallel fibers. Selected groups of the parallel fibers can be folded into desired pleated configurations. Optionally, the core layer can comprise post-consumer carpet materials.Type: GrantFiled: May 24, 2011Date of Patent: March 24, 2015Assignee: Columbia Insurance CompanyInventors: Jim Burns, John J. M. Rees, Tom Odum
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Patent number: 8921244Abstract: Hydroxyl polymer fiber fibrous structures and processes for making same are provided. More particularly, hydroxyl polymer fiber fibrous structures comprising a non-naturally occurring hydroxyl polymer fiber wherein the fibrous structure exhibits a total pore volume of pores in the range of greater than 20 ?m to 500 ?m of greater than 3.75 mm3/mg of dry fibrous structure mass, and/or fibrous structures comprising a hydroxyl polymer fiber and a solid additive are provided.Type: GrantFiled: August 16, 2006Date of Patent: December 30, 2014Assignee: The Procter & Gamble CompanyInventors: David William Cabell, David Warren Loebker, Paul Dennis Trokhan
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Patent number: 8889572Abstract: A gradient nanofiber non-woven contains a plurality of nanofibers where at least 70% of the nanofibers are bonded to other nanofibers. The nanofibers each have a surface and a center and contain a bulk polymer and a third component. The majority by weight at the surface of the nanofiber is the third component and the majority by weight at the center of the nanofiber is the bulk polymer and there is a concentration gradient from most concentrated to least from the surface of the nanofiber to the center of the nanofiber. The process for forming a gradient nanofiber non-woven is also disclosed.Type: GrantFiled: September 29, 2010Date of Patent: November 18, 2014Assignee: Milliken & CompanyInventors: Walter A. Scrivens, Hao Zhou
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Publication number: 20140201960Abstract: Disclosed is an arc flash protection, multiple-use nonwoven fabric structure comprising one or more layers having fire resistant properties. The fabric structure has an arc flash facing nonwoven surface, and a nonwoven part of the fabric structure comprises non-inherent, and/or inherently fire resistant fibers, said fibers being mechanically, chemically, or thermally bonded, whereby the fabric structure has a minimum Arc Thermal Protection Value (ATPV) to fabric basis weight ratio of 250 cal/g, preferably greater than 350 cal/g, more preferably greater than 500 cal/g, when measured in accordance with ASTM F1959—Standard Test Method for Determining the Arc Rating of Materials for Clothing, and the fabric structure maintains said ATPV to fabric basis weight ratio through at least 25 washing cycles when washed according to AATCC Method 135 (3, IV, A iii).Type: ApplicationFiled: March 26, 2014Publication date: July 24, 2014Applicant: NORAFIN INDUSTRIES GMBHInventors: Stuart Smith, Marc Jolly, Jos van Hattum, Andre Lang, Bettina B. Sorensen
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Publication number: 20140187115Abstract: Provided are a polyphenylene sulfide fiber including a PPS resin as a main component and having both excellent heat resistance and excellent thermal bonding properties, and a nonwoven fabric including the fiber. The polyphenylene sulfide fiber includes polyphenylene sulfide as a main component and having the sum of the crystallinity and the rigid amorphous fraction of 30% to 90%. The crystallinity is preferably not less than 5% and less than 25%. The polyphenylene sulfide fiber is used to form a nonwoven fabric. The nonwoven fabric is preferably produced by consolidation by thermal bonding or mechanical entanglement.Type: ApplicationFiled: June 1, 2012Publication date: July 3, 2014Applicant: Toray Industries, Inc.Inventors: Yohei Nakano, Yoshikazu Yakake, Masashi Ito
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Patent number: 8652976Abstract: The invention relates to a fixable nonwoven interlining material for use in the textile industry, comprising at least one melt-spun fiber layer and at least one additional fibrous material layer, the fixable interlining material being provided with an adhesive substance at least in partial regions. A particularly high elasticity of the fixable interlining material is achieved by the fact that the melt-spun fibers are composed of an elastic fibrous material, and the at least one layer of fibrous material is composed of staple fibers, and the at least one elastic melt-spun fiber layer and the at least one staple fiber layer are laid one on top of the other in the form of a flat unbonded fiber fabric, and are subsequently bonded by use of a bonding step known as such.Type: GrantFiled: April 20, 2006Date of Patent: February 18, 2014Assignee: Carl Freudenberg KGInventors: Michael Kalbe, Oliver Staudenmayer, Manfred Jöst, Peter Rudek
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Patent number: 8652977Abstract: The present invention provides a heat-resistant nonwoven fabric wherein the nonwoven fabric is formed from a poly(phenylene sulfide) fiber, and 30% by weight or more of the poly(phenylene sulfide) fiber has a crystallinity of 25 to 50%. Moreover, the properties of the heat-resistant nonwoven fabric can be further improved by making the nonwoven fabric have a multilayer structure in which layers composed of a poly(phenylene sulfide) filamentary fiber and layers composed of a poly(phenylene sulfide) fine fiber are stacked and integrated.Type: GrantFiled: September 21, 2007Date of Patent: February 18, 2014Assignee: Asahi Kasei Fibers CorporationInventors: Toshiyuki Shimizu, Masahiko Maeda
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Patent number: 8637414Abstract: A gradient density padding material includes a single layer of nonwoven material having at least one surface processed to form a portion of a thickness thereof having a density increased with respect to a remaining portion of the thickness thereof. The single layer of nonwoven material after processing has an airflow resistance within the range of 200-4000 MKS Rayls, wherein said single layer of nonwoven material has an enhanced acoustic performance. A method of making a gradient density padding material having an enhanced acoustic performance includes the steps of providing a single layer of nonwoven material and processing at least one surface of the single layer of nonwoven material to form a portion of a thickness thereof having a density increased with respect to a remaining portion of the thickness thereof. The single layer of nonwoven material after processing has an airflow resistance within the range of 200-4000 MKS Rayls.Type: GrantFiled: April 22, 2003Date of Patent: January 28, 2014Assignee: Lydall, Inc.Inventors: Durward Gomez, Steven Borchardt
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Patent number: 8568853Abstract: A fiber reinforced thermoplastic composite having an improved combination of flexural, impact, and heat distortion characteristics. The composite comprises a fiber reinforced thermoplastic core containing fibers bonded together with a first thermoplastic resin in which the core has a first surface and a second surface and at least one first skin applied to the first surface. The first skin comprises one or more bi-directional continuous fiber tapes having a plurality of continuous fibers bonded together with one or more thermoplastic resins. The fibers in each first skin are arranged in a first and a second direction, with the fibers in each direction being unidirectionally oriented within the skin. Bi-directional orientation of the continuous fiber tapes is present in at least one of the tapes, or is achieved through the use of two or more tapes having unidirectional continuous fibers.Type: GrantFiled: December 14, 2007Date of Patent: October 29, 2013Assignee: Hanwha Azdel, Inc.Inventors: Venkat Raghavendran, Gary Francis Smith
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Patent number: 8557722Abstract: A nonwoven material suitable for use as a wet wipe substrate is disclosed. The nonwoven material comprises thermoplastic fibers and is provided with a pattern of embossments that join at least a portion of the thermoplastic fibers. When the material is treated with a cleaning lotion to provide a wet wipe, the wet wipe has a wet CD modulus that is greater than about 25 N/m and less than about 80 N/m.Type: GrantFiled: June 23, 2005Date of Patent: October 15, 2013Assignee: The Procter & Gamble CompanyInventors: Astrid Annette Sheehan, Jonathan Paul Brennan, Philip Andrew Sawin, Terrill Alan Young
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Publication number: 20130260088Abstract: A consolidated fibrous mat comprises 20 to 50 weight percent of reinforcing fibers; and a continuous phase connecting the reinforcing fibers, comprising 50 to 70 weight percent of a polymer having a melt temperature at least 20° C. lower than the reinforcing fibers, and 5 to 10 weight percent of a binder having a melt temperature lower than the polymer; wherein the weight percent of each of the reinforcing fibers, the polymer, and the binder is based on the combined total weight of the reinforcing fibers, the polymer, and the binder.Type: ApplicationFiled: March 14, 2013Publication date: October 3, 2013Applicant: SABIC Innovative Plastics IP B.V.Inventors: Benny Ezekiel David, Kim R. Choate, Dennis Lockyer, Thomas Adjei, Vincent L. Lanning, Craig Lawrence Milne, Erich Otto Teutsch
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Publication number: 20130260629Abstract: A yarn or thread may include a plurality of substantially aligned filaments, with at least ninety-five percent of a material of the filaments being a thermoplastic polymer material. Various woven textiles and knitted textiles may be formed from the yarn or thread. The woven textiles or knitted textiles may be thermal bonded to other elements to form seams. A strand that is at least partially formed from a thermoplastic polymer material may extend through the seam, and the strand may be thermal bonded at the seam. The woven textiles or knitted textiles may be shaped or molded, incorporated into products, and recycled to form other products.Type: ApplicationFiled: April 3, 2012Publication date: October 3, 2013Applicant: NIKE, INC.Inventors: Bhupesh Dua, Carrie L. Davis
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Publication number: 20130228510Abstract: A catheter anchoring system, apparatus and method for securing a catheter to a patient's skin, having two flexible side members and a cross-member therebetween to which a retaining assembly is mounted. The retaining assembly may hold a catheter hub at an angle for patient comfort. Gripping tabs secure to each retaining assembly side are gripped while advancing a cannula guide needle into the patient's vein and while attaching the catheter hub to a medical accessory, such as intravenous (I.V.) tubing, for increased patient comfort, reduction of the risk in contamination and patient infection, and to more easily and quickly start an I.V.Type: ApplicationFiled: October 6, 2011Publication date: September 5, 2013Applicant: FIBERWEB, INC.Inventor: John F. Baker, JR.
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Patent number: 8486849Abstract: Absorbent articles such as disposable diapers, incontinent briefs, diaper holders, training pants and the like, having elastomeric ear panels and a fastening system that provides the user with different options as to how the absorbent article may be fitted to and removed from the wearer. The absorbent articles allow the wearer to choose between conventional and pull-on diaper configurations, or combinations thereof, and properly and comfortably fit a large range of wearer sizes. Further, the absorbent articles can be pulled on and/or off as a pant. This feature is provided by the ear panels which maintain sufficient tension to hold the diaper on the wearer throughout the period of use without harming the wearer's skin, while providing enough stretch to allow the diaper to be pulled up or down over the wearer's hips. The fastening system is refastenable for convenience yet strong enough to maintain the diaper in a fastened configuration without becoming detached if the diaper is pulled on or off the wearer.Type: GrantFiled: April 1, 2010Date of Patent: July 16, 2013Assignee: The Procter & Gamble CompanyInventors: Mark James Kline, Miguel Alvaro Robles
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Patent number: 8476173Abstract: Laminate material having a first liquid-permeable material layer and discretely-arranged material pieces of a second liquid-permeable material, wherein the material layer and the discrete material pieces are joined internally. The laminate material also has a second liquid-permeable material layer joined to the first liquid-permeable material layer and the discretely-arranged material pieces.Type: GrantFiled: December 7, 2005Date of Patent: July 2, 2013Assignee: SCA Hygiene Products ABInventors: Ralph Dovertie, Roy Hansson
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Patent number: 8420557Abstract: The present invention concerns a nonwoven fabric the fibers of which have polyethylene on at least part of their surface, where the fibers are thermally bonded and the non-woven fabric exhibits an abrasion of less than 0.5 mg/cm2, in particular of less than 0.4 mg/cm2, and an embossed area fraction of less than 35%, in particular of less than 28%. Furthermore a device is made available for the manufacture of a non-woven fabric, using a polyethylene-containing polymer, with a take-down system underneath a spinning plate that causes the take-down of the polyethylene, where the spinning plate has an L/D ratio of between 4 and 9.Type: GrantFiled: June 20, 2006Date of Patent: April 16, 2013Assignee: Fiberweb Corovin GmbHInventors: Markus Haberer, Henning Röttger
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Patent number: 8415263Abstract: A composite material as a sheet material is described, being relatively cheap, most useful as a raw material of a sanitary product or the like, such as underwear, dust-proof mask or dispensable paper diaper, etc., and good in processability, stretchability, gas-permeability, softness, and touch. The composite material is formed by laminating a stretchable layer and a conjugate spunbonded nonwoven fabric including conjugate fibers including a low-melting-point component and a high-melting-point component. The conjugate fibers are partially bonded to each other by thermocompression, wherein each bonded portion has fine folded structures including alternate hill and valley regions in the CD, and the distance between neighboring hills is 100-400 ?m in average. The conjugate spunbonded nonwoven fabric exhibits stretchability through the spread of the fine folded structures, and has, at 5% elongation, a CD-strength of 0.1 N/5 cm or less and an MD/CD strength ratio of 200 or more.Type: GrantFiled: March 30, 2011Date of Patent: April 9, 2013Assignees: JNC Corporation, JNC Fibers CorporationInventors: Toshikatsu Fujiwara, Taiju Terakawa
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Publication number: 20130071639Abstract: The present invention discloses a covering for placement on a surface, such as a wall on the inside of a house, for reduction or prevention of a singularity or a plurality of emissions, such as harmful emissions, released from the surface. The covering comprises a trapping agent and a carrier for retaining and supporting the trapping agent, such that the trapping agent can trap the singularity or plurality of emissions without being released from the carrier. The trapping agent is a substantially irreversible trapping agent independently selected from one or several of the group consisting of absorbing agents and adsorbing agents, such that the trapping agent is capable of fully or partly trapping the singularity or plurality of emissions substantially irreversibly by absorption or adsorption, or a combination of absorption and adsorption. The covering may further comprise a semi-permeable barrier. Methods for use and manufacturing of the covering are also disclosed.Type: ApplicationFiled: May 26, 2011Publication date: March 21, 2013Inventor: Lennart Larsson
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Patent number: 8389427Abstract: A hydroentangled nonwoven material (8), includes a mixture of randomized continuous filaments (3) and natural fibers (5), wherein at least part of the staple fibers and/or the continuous filaments includes thermoplastic material. The nonwoven material is bonded in a non-random bonding pattern including a plurality of bonding sites (14) in which thermoplastic material included in the nonwoven material has been caused to at least partly soften or melt to create thermal bonds between the continuous filaments. The nonwoven material includes no other thermal bonds between the filaments than provided by the non-random bonding pattern. The nonwoven material may also contain synthetic staple fibers (6).Type: GrantFiled: November 29, 2006Date of Patent: March 5, 2013Assignee: SCA Hygiene Products ABInventors: Anders Gustafsson, Lars Fingal, Mikael Strandqvist, Kaveh Tondkar
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Publication number: 20130040524Abstract: The invention according to the present invention relates to an intermediate layer (1) of friction decreasing material placed between two layers (2, 3). The intermediate layer (1) is adapted to create a sliding movement between the layers (2, 3) when a force (K) is applied and a tangential force component (KT) shears the layers. The friction decreasing material comprises fibers (F).Type: ApplicationFiled: January 11, 2011Publication date: February 14, 2013Applicant: MIPS ABInventors: Peter Halldin, Anders Bergner, Kay Grinneback
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Patent number: 8322487Abstract: An acoustically coupled non-woven composite containing a non-woven layer and a thermoplastic film. The non-woven layer contains a plurality of binder fibers and a plurality of bulking fibers and has a binder zone and a bulking zone.Type: GrantFiled: August 19, 2011Date of Patent: December 4, 2012Assignee: Milliken & CompanyInventors: Dale S. Kitchen, Pradipkumar Bahukudumbi, Gregory Thompson
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Patent number: 8298969Abstract: A composite having a first layer and a second layer. The first layer is a nonwoven layer containing high modulus fibers having a modulus of at least 8 GPa and thermoplastic binder fibers, where at least a portion of the high modulus fibers are connected to the binder fibers, and where the first layer has a solidity of between about 10 and 90%. The second layer is a textile layer selected from the group consisting of a knit layer, a woven layer, bidirectional laminates, and a unidirectional layer. The second layer contains high modulus fibers having a modulus of at least 8 GPa in a thermoplastic matrix.Type: GrantFiled: August 19, 2009Date of Patent: October 30, 2012Assignee: Milliken & CompanyInventor: Pradip Bahukudumbi
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Patent number: 8088696Abstract: This invention relates to nonwoven fabrics with advantageous characteristics and the method to produce these fabrics. Advantageously, the fabrics of the subject invention have increased thickness (loft) compared to conventional nonwoven fabrics and have high air permeability and open space while maintaining softness and strength at the same basis weight.Type: GrantFiled: October 21, 2002Date of Patent: January 3, 2012Assignee: The Procter & Gamble CompanyInventors: Albert E. Ortega, R. Wayne Thomley, Jan Mackey
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Publication number: 20110293911Abstract: A method of forming a nonwoven material, the method comprising: receiving fibrous material comprising thermo-plastic fibers; processing the fibrous material to produce short fibers; adding the short fibers to a preformed web; and heating and optionally compressing the preformed web to form a nonwoven material.Type: ApplicationFiled: December 4, 2009Publication date: December 1, 2011Applicant: Eman8 Pty Ltd.Inventors: Michael William Coates, Marek Henryk Kierzkowski, Philip John Gibbons, Alfred Johannas Eiden
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Patent number: 8058192Abstract: A floral sleeve is made from two layers of non-woven thermoplastic fabric such as polypropylene. The layers are joined at the side seams of the sleeve by first pre-sealing the edges and thereafter trimming them. Pre-sealing compresses the fabric to make it denser along a band and applying heat causes the band to retain the compressed and at least partially fused set. Trimming may be done using a hot knife that completes the fusing process of the layers to each other. Alternately, the pre-sealing step may form a satisfactory fusion between the layers and the trimming step need not effect further fusion.Type: GrantFiled: May 21, 2002Date of Patent: November 15, 2011Assignee: Professional Package Company, Inc.Inventor: Tom Helms
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Patent number: 8053074Abstract: A stretch nonwoven fabric 10 contains inelastic fibers having a varied thickness along the length and elastic fibers. The nonwoven fabric 10 preferably includes an elastic fiber layer 1 and a substantially inelastic, inelastic fiber layer 2 on at least one side of the elastic fiber layer 1. The fibers with a varied thickness along the length are contained in the inelastic fiber layer 2. The nonwoven fabric 10 is conveniently produced by (a) superposing a web containing low-drawn, inelastic fibers having an elongation of 80% to 800% on at least one side of a web containing elastic fibers, (b) subjecting the webs, while in a non-united state, to through-air technique to obtain a fibrous sheet having the webs united together by thermal bonding the fibers at their intersections, and (c) stretching the fibrous sheet in at least one direction to draw the low-drawn inelastic fibers, followed by releasing the sheet from the stretch.Type: GrantFiled: May 18, 2007Date of Patent: November 8, 2011Assignee: Kao CorporationInventors: Takeshi Miyamura, Manabu Matsui, Tetsuya Masuki, Hideyuki Kobayashi, Koji Kanazawa, Hiroshi Kohira
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Publication number: 20110236614Abstract: A net-shaped protective material for wire harness sheathing which has flame retardancy and is free from mesh deformation. Vertical strands (2) and horizontal strands (3) which are constituted of a flame-retardant resin wire having an elliptic sectional shape have been pressed and hot melt bonded at the intersections (4) thereof to form a net shape. The vertical strands and horizontal strands are superposed at the intersections without interlacing, and one or both of the vertical strands and horizontal strands are melted in a state where 40% to 50% of the sectional area has been melted and embedded in the other strands. The protective metal has a cut end which has undergone fraying prevention processing.Type: ApplicationFiled: November 18, 2009Publication date: September 29, 2011Applicant: SUMITOMO WIRING SYSTEMS, LTD.Inventors: Tadao Ushikai, Tetsuya Iwasaki
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Patent number: 8012565Abstract: Absorbent structures with nonwoven meltblown lyocell fiber webs are described which have excellent liquid distribution properties. The absorbent structures comprise at least two nonwoven meltblown lyocell fiber webs with superabsorbent polymer intermediate the two webs. Methods for making the structures are also described. The structures are particularly useful for use in disposable hygienic products.Type: GrantFiled: March 31, 2008Date of Patent: September 6, 2011Assignee: Weyerhaeuser NR CompanyInventor: Mengkui Luo
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Patent number: 7998890Abstract: Provided herein is a non-stratified, or homogeneous, non-woven composite having (a) strength-imparting fibers of a relatively high denier and (b) binder fibers of a lower denier that adhere the composite together and that form a smooth, stiff skin on the outer surfaces of the composite. In one instance, the strength-imparting fibers are staple fibers and the binder fibers are bicomponent fibers having a low melt component. In a variation, the composite also contains a small percentage by weight (that is, less than 20%) of flame retardant fibers that impart flame resistant properties to the composite. Preferably, all of the fibers are comprised of the same polymeric material (e.g., polyester), so that the composite is recyclable. The resulting composite exhibits excellent flame retardance, strength, and stiffness, as well as having a smooth surface for attachment of a decorative fabric or other material. A process for manufacturing such composites is also provided.Type: GrantFiled: January 14, 2011Date of Patent: August 16, 2011Assignee: Milliken & CompanyInventor: LeAnne O. Flack
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Process for preparing an aqueous dispersion of a quaternary ammonium salt containing vinyl copolymer
Patent number: 7999031Abstract: A method of making an ion triggerable cationic polymer by solution copolymerizing one or more vinyl-functional cationic monomers, one or more water insoluble or hydrophobic vinyl monomers with alkyl side chains up to 4 carbons long, and, optionally, a minor amount of one or more vinyl monomers with linear or branched alkyl groups longer than 4 carbons, alkyl hydroxy, polyoxyalkylene, or other functional groups. The solution polymerization is accomplished by free radical polymerization in a mixture of an organic solvent such as acetone and water. After polymerization is complete, the organic solvent is preferably removed by a continuous process. The continuous process is preferably performed using a plate evaporator system.Type: GrantFiled: November 3, 2009Date of Patent: August 16, 2011Assignee: Bostik, Inc.Inventors: Glenn C. Calhoun, Rodney M. Weston -
Patent number: 7994081Abstract: A nonwoven fabric is provided having a plurality of semi-crystalline filaments that are thermally bonded to each other and are formed of the same polymer and exhibit substantially the same melting temperature. The fabric is produced by melt spinning an amorphous crystallizable polymer to form two components having different levels of crystallinity. During spinning, a first component of the polymer is exposed to conditions that result in stress-induced crystallization such that the first polymer component is in a semi-crystalline state and serves as the matrix or strength component of the fabric. The second polymer component is not subjected to stress induced crystallization and thus remains in a substantially amorphous state which bonds well at relatively low temperatures. In a bonding step, the fabric is heated to soften and fuse the binder component. Under these conditions, the binder component undergoes thermal crystallization so that in the final product, both polymer components are semi-crystalline.Type: GrantFiled: August 14, 2008Date of Patent: August 9, 2011Assignee: Fiberweb, Inc.Inventors: Gregory W. Farell, Edward Keith Willis
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Patent number: 7981822Abstract: The instant invention is a hook and loop fastener device. According to the instant invention, the hook and loop fastener device includes a loop component. The loop component includes a binder-free non-woven material having a bottom layer and a top layer. The bottom layer includes a first bicomponent fiber and a first monocomponent fiber. The first bicomponent fiber comprises the majority of the bottom layer based on total weight of the bottom layer, and the first monocomponent fiber comprises the balance thereof. The top layer includes a second bicomponent fiber, and a second monocomponent fiber. The second monocomponent fiber comprises the majority of the top layer based on total weight of the top layer, and the second bicomponent layer comprises the balance thereof. The bottom layer and the top layer may further include interfiber bonding to form the binder-free non-woven material.Type: GrantFiled: July 11, 2005Date of Patent: July 19, 2011Assignee: Aplix S.A.Inventors: Donald H. Lester, Jr., David L. Lunceford
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Patent number: 7977261Abstract: A thermal barrier fabric includes an inner impermeable material layer, an outer impermeable material layer, a spacer material disposed between the inner and outer impermeable material layers, and a reflective layer of material disposed between the spacer and a selected one of the inner impermeable material layer and the outer impermeable material layer. The inner and outer impermeable material layers are bound to each other along portions thereof outboard of the spacer material and the reflective layer of material to define a closed compartment. The compartment is under a vacuum, such that the reflective layer of the fabric reflects thermal energy back toward the source thereof and the vacuum substantially prevents thermal energy transfer through the compartment.Type: GrantFiled: August 11, 2006Date of Patent: July 12, 2011Assignee: The United States of America as represented by the Secretary of the ArmyInventor: Stephen P. Szczesuil
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Publication number: 20110165809Abstract: A novel terminally modified imide oligomer having excellent solubility in organic solvents, excellent solution storage stability, and excellent molding properties such as low melt viscosity. Also, a varnish obtained by dissolving the terminally modified imide oligomer in an organic solvent; a cure product obtained by using the terminally modified imide oligomer and having excellent thermal and mechanical characteristics such as heat resistance, elastic modulus, tensile strength at break and tensile elongation at break; a prepreg; and a fiber-reinforced laminate. The soluble terminally modified imide oligomer is represented by general formula (1). In the formula, R1 and R2 each represents a divalent aromatic diamine residue; R3 and R4 each represents a tetravalent aromatic tetracarboxylic acid residue; R5 and R6 each represents a hydrogen atom or a phenyl group, with R5 or R6 being a phenyl group; m and n satisfy the following relations: m?1, n?0, 1?m+n?20 and 0.Type: ApplicationFiled: September 3, 2009Publication date: July 7, 2011Applicants: KANEKA CORPORATION, JAPAN AEROSPACE EXPLORATION AGENCYInventors: Masahiko Miyauchi, Yuichi Ishida, Toshio Ogasawara, Rikio Yokota
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Patent number: 7951731Abstract: An inorganic fiber mat includes an inorganic fiber aggregated body which includes inorganic fibers. At least a part of the inorganic fibers located on a surface of the inorganic fiber aggregated body is fused to each other by heat.Type: GrantFiled: March 27, 2008Date of Patent: May 31, 2011Assignee: Ibiden Co., Ltd.Inventor: Kenichi Mitani
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Publication number: 20110092931Abstract: Disclosed are multicomponent fibers derived from a blend of a sulfopolyester with a water non-dispersible polymer wherein the as-spun denier is less than about 6 and wherein the water dispersible sulfopolyester exhibits a melt viscosity of less than 12,000 poise measured at 240° C. at a strain rate of 1 rad/sec, and wherein the sulfopolyester comprising less than about 25 mole % of residues of at least one sulfomonomer, based on the total moles of diacid or diol residues. The multicomponent fiber is capable of being drawn at a relatively high fiber speed, particularly at least about 2000 m/min, and may be used to produce microdenier fibers. Fibrous articles may be produced from the multicomponent fibers and microdenier fibers. Also disclosed is a process for multicomponent fibers, nonwoven fabrics, and microdenier webs.Type: ApplicationFiled: December 22, 2010Publication date: April 21, 2011Applicant: EASTMAN CHEMICAL COMPANYInventors: Rakesh Kumar Gupta, Scott Ellery George, Daniel William Klosiewicz, Kab Sik Seo, Coralie McKenna Fleenor, Allen Lynn Crain
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Patent number: 7927690Abstract: It is an object of the present invention to provide a nonwoven fabric which is excellent in the heat resistance and the chemical resistance, of which the fiber diameter is small, which is excellent in the strength and of which the maximum pore diameter is small. A nonwoven fabric made of an ethylene/tetrafluoroethylene copolymer, characterized in that the nonwoven fabric is mutually fused continuous fibers of an ethylene/tetrafluoroethylene copolymer which has a melt viscosity of from higher than 100 to 1,500 Pa·s at 240° C.Type: GrantFiled: March 5, 2009Date of Patent: April 19, 2011Assignee: Asahi Glass Company, LimitedInventors: Daisuke Taguchi, Ken Iruya, Seigo Kotera
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Publication number: 20110045724Abstract: A composite having a first layer and a second layer. The first layer is a nonwoven layer containing high modulus fibers having a modulus of at least 8 GPa and thermoplastic binder fibers, where at least a portion of the high modulus fibers are connected to the binder fibers, and where the first layer has a solidity of between about 10 and 90%. The second layer is a textile layer selected from the group consisting of a knit layer, a woven layer, bidirectional laminates, and a unidirectional layer. The second layer contains high modulus fibers having a modulus of at least 8 GPa in a thermoplastic matrix.Type: ApplicationFiled: August 19, 2009Publication date: February 24, 2011Inventor: Pradip Bahukudumbi
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Patent number: 7892991Abstract: Provided is an elastic network structure having durability and cushioning properties suitable for furniture, bedding such as a bed, seats for vehicles, seats for shipping, etc., the network structure being lightweight and having excellent chemical resistance, excellent light resistance, soft repellency, and excellent cushioning characteristics in a low temperature environment. The elastic network structure comprises a three-dimensional random loop bonded structure obtained by forming random loops with curling treatment of a continuous linear structure having not less than 300 decitex, and by making each loop mutually contact in a molten state to weld the majority of contacted part, the continuous linear structure mainly including a low density polyethylene resin with a specific gravity of not more than 0.94 g/cm3.Type: GrantFiled: December 20, 2005Date of Patent: February 22, 2011Assignee: Toyo Boseki Kabushiki KaishaInventors: Masaki Yamanaka, Yoshihiro Matsui
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Patent number: 7871947Abstract: Provided herein is a non-stratified, or homogeneous, non-woven composite having (a) strength-imparting fibers of a relatively high denier and (b) binder fibers of a lower denier that adhere the composite together and that form a smooth, stiff skin on the outer surfaces of the composite. In one instance, the strength-imparting fibers are staple fibers and the binder fibers are bicomponent fibers having a low melt component. In a variation, the composite also contains a small percentage by weight (that is, less than 20%) of flame retardant fibers that impart flame resistant properties to the composite. Preferably, all of the fibers are comprised of the same polymeric material (e.g., polyester), so that the composite is recyclable. The resulting composite exhibits excellent flame retardance, strength, and stiffness, as well as having a smooth surface for attachment of a decorative fabric or other material. A process for manufacturing such composites is also provided.Type: GrantFiled: October 22, 2008Date of Patent: January 18, 2011Assignee: Milliken & CompanyInventor: LeAnne O. Flack
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Publication number: 20100310837Abstract: The present invention is directed to a structured fibrous web comprising thermally stable, hydrophilic fibers that are thermally bonded together using heat producing a base substrate that is thermally stable. The base substrate is textured via mechanical treatment to increase its thickness and optionally modified via over bonding to improve its mechanical and fluid handling properties. The structured fibrous web provides optimal fluid wicking and fluid acquisition capabilities and is directed toward fluid management applications.Type: ApplicationFiled: June 3, 2009Publication date: December 9, 2010Inventors: Eric Bryan Bond, Carola Elke Beatrice Krippner, John Brian Strube
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Publication number: 20100310845Abstract: The present invention is directed to a fluid permeable structured fibrous web comprising thermally stable, fibers that are thermally bonded together using heat producing a base substrate that is thermally stable. The base substrate is textured via mechanical treatment producing a structured fibrous web having an aged caliper of less than 1.5 mm, a vertical wicking height of at least 5 mm, a permeability of at least 10,000 cm2/(Pa·s) and a specific volume of at least 5 cm3/g. The structured fibrous web provides optimal fluid wicking and the fluid acquisition capabilities and is directed toward fluid management applications.Type: ApplicationFiled: June 3, 2009Publication date: December 9, 2010Inventors: Eric Bryan Bond, Carola Elke Beatrice Krippner, Ute Froehlich
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Patent number: 7820573Abstract: A fibrous blanket material is provided having a first fibrous layer selected from a group of fibers consisting of polyester, polypropylene, polyethylene, fiberglass, natural fibers, nylon, rayon and blends thereof and a layer of meltblown polypropylene fibers. In an alternative embodiment the blanket may also include a second fibrous layer made of the same material as the first layer where the layer of meltblown polypropylene fibers is sandwiched between the two fibrous layers.Type: GrantFiled: July 24, 2008Date of Patent: October 26, 2010Assignee: OCV Intellectual Capital, LLC,Inventor: Jeffrey A. Tilton
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Publication number: 20100268331Abstract: The invention relates to a gel-spinning process for producing a high tensile strength ultra high molecular weight polyethylene (UHMWPE) multifilament yarn comprising ultra-low dtex filaments, the process being characterized in that the draw ratio DRfluid applied to fluid filaments obtained by spinning a solution of UHMWPE through a spinneret and into an air gap, is at least 450, wherein DRfluid=DRsp*DRag, the DRsp and DRag being the draw ratios in the spinholes and in the air gap, respectively; and provided that DRag is at least 30. The UHMWPE multifilament yarns produced thereof were characterized by a tensile strength of at least 3.5 GPa and contained filaments having a dtex of at most 0.5. The invention further relates to products comprising said yarns, e.g. fabrics, medical devices and composite and ballistic articles.Type: ApplicationFiled: December 17, 2008Publication date: October 21, 2010Inventors: Joseph Arnold Paul Maria J.A.P.M Simmelink, Roelof Marissen
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Patent number: RE42765Abstract: A plant serves as a mean for production of a fibre web of synthetic fibres, such as plastic fibres and absorbent fibres, such as viscose and cellulose fibres. The plant includes a forming head preliminary to lay a homogeneously and smoothly distributed fibre layer on a net shaped wire. Furthermore the plant includes a hydro-entangling section with liquid nozzles with powerful liquid jets to treat the in the forming head formed fibre layer, which consists of both synthetic—and absorbent fibres. The plant also includes an oven subsequently to thermal bond the synthetic fibres with cross bonds in the affected areas. Finally the dried web is winded up in a roller. By the help of the plant according to the invention, by higher production speed than known previously a fibre web can be produced, which is far cheaper, and which has a better and more homogeneous structure than similar conventional fibre webs.Type: GrantFiled: October 12, 1998Date of Patent: October 4, 2011Assignee: Oerlikon Textile GmbH & Co. KGInventor: Jens Ole Bröchner Andersen