Stratified Or Multilayer Patents (Class 19/302)
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Patent number: 12043933Abstract: A system for bonding a first layer having short fibers with a second layer having long fibers into a nonwoven web. The system includes a belt, a headbox, a depositing belt with a delivery strand, a transfer belt with a receiving strand, a device, a pre-bonding unit, and a bonding device. The short fibers are deposited on the depositing belt to form the first layer with the headbox. The transfer belt transfers the first layer to the second layer. The pre-bonding unit has spaced-apart compacting devices which act on the transfer belt to form a lower strand of the transfer belt there between. The bonding device is arranged between the compacting devices. The bonding device bonds the first and second layers. The compacting devices and the bonding device are operatively connected to one another so that they are each always either in an operating state or in a resting state.Type: GrantFiled: March 24, 2022Date of Patent: July 23, 2024Assignee: ANDRITZ KUESTERS GMBHInventors: Jean-Michel Ugnon-Coussioz, Dennis Latendorf
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Patent number: 11879193Abstract: An apparatus for bonding a first layer having short fibers with a second layer having long fibers into a non-woven web. The apparatus includes a first circulating belt on which the second layer is depositable and displacable, a second circulating belt via which the first layer is transferable at a transition point to the second layer, a pre-bonding unit arranged directly behind the transition point, and a bonding device. The pre-bonding unit has compactors which are spaced apart from one another. The compactors act in one region on the first or second circulating belt. The bonding device is arranged between the compactors and bonds together the first and second layers. The compactors and the bonding device are integrated into the apparatus to together be in an operating state when the first layer is transferred using the second circulating belt.Type: GrantFiled: March 24, 2022Date of Patent: January 23, 2024Assignee: ANDRITZ KUESTERS GMBHInventors: Jean-Michel Ugnon-Coussioz, Dennis Latendorf
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Patent number: 11705098Abstract: The sound absorbing material according to the present invention is formed by laminating a porous sound absorber and two or more sheets of a nonwoven fabric one on another. The nonwoven fabric has a plurality of drawn filaments arranged and oriented in one direction. The mode value of the diameter distribution of the plurality of filaments is in the range of 1 to 4 ?m. The grammage of the nonwoven fabric is in the range of 5 to 40 g/m2. The sound absorbing material according to the present invention provides high sound absorption performance in a predetermined low frequency band of 6000 Hz or less, and still remains light in weight and flexible enough and easy enough to handle to be substantially comparable to the porous sound absorber.Type: GrantFiled: June 15, 2018Date of Patent: July 18, 2023Inventors: Kunihiko Ibayashi, Hiroaki Konishi, Muneyuki Shiina, Masahiro Wakayama
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Patent number: 11618983Abstract: An apparatus for making a nonwoven fabric from thermoplastic plastic filaments has an air permeable deposit conveyor having a horizontal face displaceable in a horizontal travel direction and a spinneret above the conveyor for spinning the filaments and depositing the spun filaments on the deposit conveyor in a deposit area of the conveyor as a nonwoven web for conveyance in the travel direction. An extractor beneath the conveyor draws air or process air through the deposit conveyor in the deposit area in a main extraction area below the deposit conveyor and is delimited by, relative to the travel direction, upstream and downstream suction partitions. One of the partitions has an upper edge set at a predetermined vertical spacing below the conveyor equal to between 10 mm and 250 mm.Type: GrantFiled: July 28, 2020Date of Patent: April 4, 2023Assignee: REIFENHAEUSER GMBH & CO. KG MASCHINENFABRIKInventors: Tobias Wagner, Sebastian Sommer, Patrick Bohl, Andreas Roesner, Hans-Georg Geus
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Patent number: 10344409Abstract: A production method which increases the abrasion resistance of nonwoven textiles used in the automotive sector includes the operation steps of mixing of two or more fibers that have different melting points, application of opening, carding, and needle operations on the fiber on the texture production line, and fiber root binding in a ram drying oven without the need for using any chemical substance.Type: GrantFiled: October 4, 2016Date of Patent: July 9, 2019Assignee: PIMSA OTOMOTIV TEKSTIKKERI SANAYI VE TICARET ANONIInventor: Serdar Sezer
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Publication number: 20150111457Abstract: A method and device are disclosed for producing 3D fabrics including yarns/tows that remain in pre-tensioned condition. Further, the method and device produce 3D fabrics with features that increase the mechanical performance of produced materials which are highly suited for composite materials and impact injury mitigation applications. The method and device also provide a simple, quick and compact arrangement to produce economically both uniaxial and multiaxial types of 3D fabrics with specific dimensions and shapes in ‘middle-outwards’ manner to reduce production time by half by arranging the set of axial yarns in zigzag fashion between oppositely facing supports. The method and device aid automated production of 3D fabrics and their direct packaging to eliminate contamination of produced 3D fabrics. A 3D fabric produced in this way is also disclosed. The 3D fabric includes yarns/tows that remain in pre-tensioned condition.Type: ApplicationFiled: March 23, 2012Publication date: April 23, 2015Inventor: Nandan Khokar
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Publication number: 20140296817Abstract: The present invention relates to a method and apparatus for forming a composite structure, preferably for use in an absorbent structure used within the personal hygiene industry, such as for instance feminine hygiene garments, baby diapers and pants and adult incontinence garments. The present invention preferably provides a method and apparatus for depositing particulate material in a desired pattern onto a moving carrier layer and positioning it into a pocketing pattern. The method allows accurate forming of a pre-determined pattern of particulate material clusters at high production speed, with reduced raw material usage and relative low cost. As such method allows manufacturing of absorbent structures being substantially cellulose free and substantially glue free, considered technically, economically and environmentally friendly.Type: ApplicationFiled: October 20, 2011Publication date: October 2, 2014Applicant: VYNKA BVBAInventor: Bart Van Malderen
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Publication number: 20140235131Abstract: The present invention relates to a multipurpose functional nonwoven fabric, and more particularly, to a multipurpose functional nonwoven fabric which is manufactured by performing a pretreatment process on carbonized fiber cotton, and stacking the pretreated carbonized fiber on natural cotton, mixing the pretreated carbonized fiber cotton with the natural cotton and scutching the mixed cotton, or introducing the natural cotton and stacking the natural cotton on an intermediate layer of the pretreated carbonized fiber, and a method for manufacturing same. Web formation and stacking at a cutting machine can be easily performed by performing the pretreatment process on the carbonized fiber.Type: ApplicationFiled: October 25, 2011Publication date: August 21, 2014Applicant: ENEXIS CO., LTD.Inventors: Gapho Yun, Giho Yun, Hakbum Kim, Kwang Hui So, Eunhak Song
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Publication number: 20140141677Abstract: A non-woven fabric includes a filament fiber web and a composite fiber web that is entangled with the filament fiber web and that includes composite staple fibers and cellulose fibers. The composite staple fibers and the cellulose fibers are fusion-bonded together. A method of fabricating a non-woven fabric includes: (a) air laying and thermally treating composite staple fibers and cellulose fibers so as to form a composite fiber web, the composite staple fibers and the cellulose fibers in the composite fiber web being fusion-bonded together, and (b) disposing the composite fiber web between two filament fiber webs followed by subjecting to water-jet treatment such that the composite fiber web and the filament fiber webs are entangled with each other.Type: ApplicationFiled: June 26, 2013Publication date: May 22, 2014Applicant: KANG NA HSIUNG ENTERPRISE CO., LTD.Inventors: Jung-Chi Tai, Ho-Hsi Yang, Chien-Chung Su
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Patent number: 8621722Abstract: The present invention relates to a method for the continuous production of laid staple fiber fabrics with aligned fiber orientation, in which method the laid fabrics are produced by continuous plaiting down of carded fiber web at defined laying angles onto a synchronized transport belt (1), wherein the carding machine (2) and plaiting means (3) arranged downstream of it are arranged at an acute angle with respect to the advancing direction of the transport belt. Said laid staple fiber fabrics are used for producing high-strength fiber-reinforced plastic composites, as are used in wind power plants, aircraft construction and the automotive industry. In particular in the loading direction, said composites have high composite strengths and rigidities, to which end a defined fiber orientation is required. In addition to a defined orientation of the finite fibers, the laid fabrics also have a defined mass per unit area.Type: GrantFiled: November 11, 2010Date of Patent: January 7, 2014Assignees: SGL Carbon SE, Bayerische Motorenwerke AGInventors: Thomas Reuβmann, Renate Lützkendorf, Gerald Ortlepp
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Patent number: 8590111Abstract: In order to produce air-laid non-woven fabrics with an adjustable strength ratio of the production direction and 90° to the production direction, two non-woven laying machines are set at an angle to the production direction.Type: GrantFiled: August 17, 2011Date of Patent: November 26, 2013Inventor: Hubert Hergeth
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Publication number: 20130165883Abstract: A nonwoven fabric that minimizes the condition of rewet-back in which fluid absorbed into an absorbent body exudes out to the front side, as well as a method for producing it.Type: ApplicationFiled: June 6, 2011Publication date: June 27, 2013Applicant: UNICHARM CORPORATIONInventors: Akihiro Kimura, Toru Oba
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Patent number: 8464400Abstract: The method for operating a fleece layer requires a fleece layer, to which the card web is supplied at variable card web infeed speed. To limit the amount of space required for the upper carriage at the rear of the machine, the average of the absolute values of the laying-carriage speed during the forward movement of the laying carriage in at least some laying cycles differs from the average of the absolute values of the laying-carriage speed during the return movement of the laying carriage, and the average of the absolute values of the laying-carriage speed in at least some laying cycles during the forward movement of the laying carriage differs from twice the average of the absolute values of the upper-carriage speed during the forward movement of the laying carriage.Type: GrantFiled: June 8, 2012Date of Patent: June 18, 2013Assignee: Oskar Dilo Maschinenfabrik KGInventor: Johann Phillipp Dilo
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Publication number: 20130095718Abstract: A non-woven fabric material according to the present invention is used to produce articles of clothing and comprises a plurality of thin layers superimposed and interlaced with each other. Each layer is formed by carded fibers which comprise at least 15% in weight, of the total fibers present, of self-gathering fibers. Each self-gathering fiber develops in a main direction of development and is formed by two or more polymers that define corresponding two or more regions joined and adjacent to each other in said main direction of development of the self-gathering fiber.Type: ApplicationFiled: October 13, 2011Publication date: April 18, 2013Applicant: CONSERINT KFTInventor: Edit KÁRPÁTI
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Patent number: 8196631Abstract: A SMC lamination line is disclosed that has an upper carrier film and a lower carrier film with oriented chopped fibers being deposited between the carrier films. Resin paste or adhesive is provided to retain oriented fibers on the lower carrier film. A guide roller guides the carrier film in close proximity to an in-feed conveyor that feeds oriented chopped fiber unto the lower carrier film. The guide roller is preferably less than the diameter of the end roller of the feed conveyor. The guide roller is also preferably within the arc of movement of the ends of the oriented chopped fibers to ensure a smooth and non-disruptive transfer of the oriented chopped fibers to the lower carrier film.Type: GrantFiled: November 25, 2008Date of Patent: June 12, 2012Assignee: Ford Global Technologies, LLCInventors: Jeffrey S. Dahl, Raymond Silva, James E. DeVries, Carl F. Johnson
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Publication number: 20110135900Abstract: A non-woven flame retardant barrier comprising a binder; and a plurality of charring fibers combinable with the binder. The charring fibers include treated viscose fibers, wherein the charring fibers are substantially free of polymers made from halogenated monomers, consist essentially of fibers exclusively having a denier of from 1.5 to 3.5, and provide a fire-blocking web upon exposure to a heat source. The barrier has a basis weight of approximately from 0.25 to 0.65 osf.Type: ApplicationFiled: December 13, 2010Publication date: June 9, 2011Applicant: WM. T. BURNETT IP, LLCInventor: Greg Davis
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Publication number: 20110081816Abstract: A method of manufacturing a fibrous structure is particularly, though not exclusively, applicable to the manufacture of friction products such as preform discs. The method comprises mounting a former on a shaft. First feeds of fibrous material are spaced along the shaft and applied to the former in a direction tangential to the shaft as the shaft is rotated. A second feed is also applied to the former in a direction substantially parallel to the longitudinal axis of the shaft. The fibrous materials in the feeds overlie as the shaft rotates and the thickness of the material applied to the former increases to form the fibrous structure. Lengths of the first and/or second feeds are then inserted into the fibrous structure body in a radial direction with respect to the shaft as the shaft is rotated to interconnect the overlying layers and hold the structure together.Type: ApplicationFiled: November 14, 2008Publication date: April 7, 2011Inventors: Tom Lloyd Halstead, Richard Allen
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Patent number: 7914635Abstract: A unitary, fiber-containing composite comprises (a) a first region comprising a plurality of first binder fibers and a plurality of bast fibers, (b) a second region disposed above the first region, the second region comprising a plurality of second binder fibers and a plurality of bast fibers, and (c) a transitional region disposed between the first region and the second region. The transitional region comprises concentrations of the first binder fiber, the second binder fiber, and the bast fiber. The concentration of the first binder fiber in the first transitional region is greatest proximate to the first region and least proximate to the second region, and the concentration of the second binder fiber and the bast fiber in the first transitional region is greatest proximate to the second region and least proximate to the first region. A method for producing a unitary, fiber-containing composite is also described.Type: GrantFiled: October 13, 2009Date of Patent: March 29, 2011Assignee: Milliken & CompanyInventors: Gregory J. Thompson, Jessica Ann Qinghong, Sterling R. Mensch, David E. Wenstrup, Shah N. Huda
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Publication number: 20090276978Abstract: An apparatus and method for manufacturing a multi-layer web product. A long fiber stream is directed around a rotating carding cylinder. Two combing cylinders are disposed adjacent the carding cylinder to comb a first web of long fiber and a second web of long fiber, respectively, from the carding cylinder. A first conveyor receives the first web from the first combing cylinder and transports the first web toward a layering point. Similarly, a second conveyor receives the second web from the second combing cylinder and transports the second web toward the layering point. A short fiber deposition unit is disposed adjacent the second conveyor and deposits short fibers onto the second web. At the layering point, the first conveyor deposits the first web onto the second web, with the short fibers sandwiched therebetween, to form a layered web product.Type: ApplicationFiled: July 21, 2009Publication date: November 12, 2009Applicant: Georgia-Pacific Consumer Products LPInventors: Bradley G. Schmidt, Edward J. Yock
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Patent number: 7591049Abstract: A textile lapping machine has an inclined reciprocating comb which deposits a vertically descending fibrous web onto a mesh belt of an endless conveyor which travels through an oven. A reciprocating presser bar pushes the pleats formed by the comb into a shark unit which extends across the width of the mesh belt. The unit has a toothed plate which initially slows the pleated web and longitudinal fingers which overlie the conveyor and form a shallow lapping zone. A textile card delivers the fibrous web to the lapping zone and the oven fuses any low melt synthetic fibers in the web to the surrounding fibers to give a batt with a density of 80-2000 gsm. The comb path direction remains constant and the presser bar and shark unit are moved towards and away from the comb. The drives to the comb and presser bar are independent.Type: GrantFiled: March 2, 2006Date of Patent: September 22, 2009Assignee: V-Lap Pty. Ltd.Inventors: Jason Ian Cooper, Eric Roberts
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Patent number: 7454817Abstract: A heat and fire resistant planar unitary shield formed of heat and flame resistant fibers and voluminous bulking fibers. The shield material has a heat and flame resistant zone with a majority of the heat and flame resistant fibers, and a voluminous bulking zone with a majority of the voluminous bulking fibers. The fibers are distributed through the shield material in an manner that the heat and flame resistant fibers collect closest to the outer surface of the shield with the heat and flame resistant zone, and the voluminous bulking fibers collect closest to the outer surface of the shield material with the voluminous bulking zone.Type: GrantFiled: March 2, 2007Date of Patent: November 25, 2008Assignee: Milliken & CompanyInventors: David E. Wenstrup, Gregory J. Thompson, Jason G. Chay, Ty G. Dawson
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Patent number: 7404921Abstract: Free fibers (10) are deposited on a rotary support turntable (30) by means of a hollow deposition cone (40) having an outer wall surrounding a chamber and pierced by multiple perforations. The fibers are delivered to the outer surface of the perforated wall of the cone (40) in a cone feed zone that is remote from the zone for deposition on the turntable (30), and they are then held by suction being established inside the chamber, leading to suction through the perforations in the cone, so as to be transported by rotation of the cone from the cone feed zone to the zone for deposition on the turntable, and the fibers cease to be held on the cone in the deposition zone by localized interruption of the suction through the perforations in the wall of the cone, at least in said zone, such that the transported fibers are deposited on the turntable which is rotated about its own axis simultaneously with the cone being rotated. The fibers deposited on the rotary turntable (30) may be compacted and needled.Type: GrantFiled: May 22, 2003Date of Patent: July 29, 2008Assignee: Messier-BugattiInventor: Renaud Duval
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Patent number: 7278187Abstract: A method and an apparatus for manufacturing a multi-layer fabric including at least one fibre layer formed by airlaying combined with at least one further layer which is formed by different technologies, including carding, spunlacing, meitblowing, spunbonding, or airlaying, or combined with one or more films. The airforming is performed on a separate formerwire which is applied vacuum via a suction box disposed opposite to a formerhead, and where the airformed fibre layer is transferred to a conveyor wire for joining with a further layer. Edge trimming is performed at least on the airformed layer before it is joined with one or more other layers for forming the multi-layered fabric. Scrap from edge trimming and exhaust from the suction box is returned to the formerhead.Type: GrantFiled: August 27, 2004Date of Patent: October 9, 2007Assignee: Dan-Web Holding A/SInventor: Jens Erik Thordahl Petersen
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Patent number: 6460224Abstract: Method for the production of a fiber composite by placing fibers on a support, wherein long fibers are used at least as an essential component for the production of a nonwoven fabric (70). Said fibers are fed to at least one delivery head (A, A1, A2) substantially over the height of a material column and ejected in a sustantially horizontal manner therefrom. A long fiber-air suspension is generated by adding at least one aggregate. The suspension is directly applied on the support, which is especially shaped as a molding strip (14).Type: GrantFiled: August 14, 2000Date of Patent: October 8, 2002Inventor: Rolf Hesch
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Patent number: 6273978Abstract: The present invention provides a process for producing a carded and air-laid non-woven composite fabric. First, a fiber is subjected to carding treatment through a carding machine to form a carded web. Then, a fiber, powder, or particulate material is subjected to air-laying through an air-laying device to form an air-laid web. The sequence of carding and air-laying steps can be exchanged, and the carding machine and the air-laying device are disposed on the same production line. Finally, the above webs are consolidated into a non-woven composite fabric. In the present invention, since carding and air-laying are conducted on the same production line, the procedure for producing air-laid webs off-line can be omitted. Therefore, the thermoplastic polymer amount added to increase the web strength can be decreased, thus decreasing the production cost.Type: GrantFiled: January 25, 2001Date of Patent: August 14, 2001Assignee: Kang Na Hsiung Enterprise Co., LTDInventor: Jung Chi Tai
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Patent number: 6202259Abstract: A method and apparatus for depositing particulate material (30, 36) in an airlaid fibrous web (94) includes a moving of a forming surface (22) through a forming chamber (24), and a laying of a fibrous material (96) onto the forming surface to form the fibrous web. The particulate material is delivered into the forming chamber with an arcuate curved nozzle (86) which is positioned within the forming chamber at a location spaced from the forming surface.Type: GrantFiled: December 3, 1999Date of Patent: March 20, 2001Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Randy Keith Burr, John Wallace de Vos, David Willis Heyn, Richard Francis Keller, Thomas George Olsen
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Patent number: 5885623Abstract: An arrangement for fibre-laying on a moving air-permeable conveyor path (2) fibre bodies which are comprised of at least two different layers. The arrangement includes for each fibre layer a succession of air-laying units disposed sequentially in the direction of movement of the conveyor path, wherein each of the units includes elements (6, 7) for passing a stream of air-borne fibres to a region above the moving conveyor path (2), elements (3, 4) for generating a subpressure beneath the air-permeable conveyor path in the proximity of the region in which the stream of air-borne fibres is delivered, and elements (6, 7) for shielding the stream of air-borne fibres from ambient air.Type: GrantFiled: May 1, 1997Date of Patent: March 23, 1999Assignee: SCA Hygiene Products ABInventors: Gunnar Edvardsson, Claes Goransson
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Patent number: 5840634Abstract: An improvement in the sealing of bonded batts of fiberfill is obtained by providing a barrier layer of bonded bicomponent binder fibers on one or both faces of the remainder of the batt to prevent or reduce the tendency of the fiberfill to leak through such faces.Type: GrantFiled: January 22, 1996Date of Patent: November 24, 1998Assignee: E. I. du Pont de Nemours and CompanyInventors: Susan Carol Chamberlin, Wo Kong Kwok, Robert Wallace Slavin
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Patent number: 5804007Abstract: A method of manufacturing a composite fiber sheet comprising: forming the first pile layer on the surface of the first fiber sheet by needling; laminating the second fiber sheet on the back-side of the first fiber sheet; and forming the second pile layer on the surface of the first fiber sheet by needling. The composite fiber sheet so obtained has an excellent feeling, an attractive appearance and a variety functionality.Type: GrantFiled: June 9, 1997Date of Patent: September 8, 1998Assignee: Sunchemical Co., Ltd.Inventor: Tadao Asano
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Patent number: 5728083Abstract: A multilayered absorbent structure is disclosed. The absorbent structure has a plurality of absorbent planar regions defined by decreasing pore size with increasing depth into the region. Generally, each planar region has an absorbent layer having relatively large average pore sizes at the top, body facing surface, and relatively small average pore sizes at the bottom, garment facing surface. A subsequent absorbent region has a top body facing surface with an average pore size which is larger than the bottom, garment facing surface of the previous absorbent region. The top surface of each subsequent planar region is in fluid communication with the lower surface of the planar region above.Type: GrantFiled: April 25, 1995Date of Patent: March 17, 1998Assignee: McNeil-PPC, Inc.Inventors: Richmond A. Cohen, James A. Minetola, John F. Poccia
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Patent number: 5537718Abstract: A method for producing a material for a fiber-reinforced composite article is disclosed which comprises preparing an apparatus composed of a belt and at least one fiber-separating and throwing device, setting the belt in motion and the roller in rotation, feeding a mixture of matrix thermoplastic resin fibers (a) and reinforcing fibers (b) to the roller, causing the roller to separate the fibers and throw the separated, fibers, and allowing the thrown fibers to pile up on the moving belt, thereby giving rise to a mat wherein the ratio of the fibers (a) and (b) successively increases or decreases in the direction of thickness of the mat.Type: GrantFiled: November 3, 1994Date of Patent: July 23, 1996Assignee: Agency of Industrial Science & Technology, Ministry of International Trade & IndustryInventors: Yoshihiro Nagatsuka, Takeshi Kitano
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Patent number: 5514324Abstract: A sheet of an absorbent material which, comprises a blend of a fibrous substance and of a granulated substance in which the granulated substance is non-uniformly distributed in the sheet, there being alternating zones of higher and of lower density of said substance along the sheet, is prepared by vacuum depositing (16) a dispersion of the fibrous substance (20) on a moving screen (14) and continuously applying the granulated substance (24) while changing the zone of application in a pendulum-like fashion (34, 36) along the screen.Type: GrantFiled: April 7, 1993Date of Patent: May 7, 1996Assignee: Tafnukim Amir Paper ProductsInventor: Moshe Bachar
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Patent number: 5361466Abstract: A synthetic microfiber blanket having a uniform thickness is formed from a nonuniform blanket having thin or feathered lateral edges. The nonuniform blanket is cut transversely into a plurality of discrete pieces of blanket of uniform length. The plurality of discrete pieces of blanket are arranged with the thin lateral edges in overlapping relationship to form a blanket of a desired width and thickness. The overlapped, discrete pieces of blanket are then joined into an integral blanket of uniform width and thickness by entangling together fibers of adjacent pieces of blanket. A scrim backing can be incorporated into the blanket for added strength and dimensional stability.Type: GrantFiled: October 18, 1993Date of Patent: November 8, 1994Assignee: Schuller International, Inc.Inventors: John S. Robertson, Stephen E. Gross
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Patent number: 5325571Abstract: A method for producing a shaped non-woven comprises the steps of feeding fibers on a carding machine over a limited width, superposing on a receiving system the fibrous web leaving the carding machine and needling the superposed layers. The superposition is preferably obtained by winding over a cylindrical drain.The shaped non-woven obtained has a thickness gradually decreasing towards its selvedges. The obtained strip has a cross-section of an asymmetrical shape by longitudinal cutting along the median axis and optionally two longitudinal cuttings on the selvedge side.Type: GrantFiled: July 6, 1992Date of Patent: July 5, 1994Assignee: Centre Technique Industriel dit: Institut Textile de FranceInventor: Robert M. Bolliand
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Patent number: 5117535Abstract: For the production of a nonwoven web from a primary nonwoven web a conventional carding drum is used as well as a collecting surface, on which a vacuum is applied and which is continuously moved and serves to collect the fibers flying from the carding drum. In order to ensure desirable conditions for the entrainment of the fibers flying off, the fibrous covering on the carding drum is sucked from consecutive layers on consecutive portions of the surface of the drum so as to from partial streams of fibers in suction passages between the carding drum and the collecting surface.Type: GrantFiled: February 7, 1991Date of Patent: June 2, 1992Inventor: Ernst Fehrer
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Patent number: 5108678Abstract: This invention relates to a fiber reinforced plastic sheet having a gradient layer structure wherein the number of reinforcing fibers continuously varies and a process for producing the same by spreading a mixture of the fibers different in the number of filaments over the traveling zone of a conveyor and then pressing it while it contains a resin. The fiber reinforced plastic sheet of the invention is excellent in smooth appearance, fluidity during molding to an article, fiber filling ability into a complex form portion of an article and mechanical strength and can be produced inexpensively.Type: GrantFiled: April 27, 1990Date of Patent: April 28, 1992Assignee: NKK CorporationInventors: Masato Hirasaka, Yoshiaki Fujiwara
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Patent number: 5065478Abstract: The invention relates to the reception of fibers under fibering machines to obtain a mat of mineral wool. It proposes assigning to each fibering machine its own collecting zone, the surfaces of the collecting zones increasing in the direction of the increase of base weight. The invention also proposes a device characterized by the presence of two reception drums for three fibering machines.Type: GrantFiled: June 29, 1990Date of Patent: November 19, 1991Assignee: Isover Saint-GobainInventors: Hans Furtak, Wilfrid Naber, Raymond Lejeune
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Patent number: 4972551Abstract: An apparatus for making a non-woven fabric comprises a plurality of tooth-carrying carding drums, which rotate in the same sense and succeed each other in the direction of travel of the preliminary web. Each carding drum which succeeds another in the direction of travel of the preliminary web constitutes a worker roller for the next preceding carding drum. The fibers flow off from the carding drums in discharge ducts and are deposited on a collecting surface, to which suction is applied. In order to ensure a uniform deposition of the fibers on the collecting surface, each discharge passage is provided adjacent to its boundary walls with an air inlet opening, which extends throughout the width of the collecting surface and is constituted by an air-entraining injector nozzle, which is directed toward the collecting surface and discharges an air stream which is parallel to the boundary wall.Type: GrantFiled: March 7, 1990Date of Patent: November 27, 1990Inventor: Ernst Fehrer
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Patent number: 4910830Abstract: An apparatus and process for producing fibrous nonwoven fabrics of at least two superposed fibrous web layers of equal or different structure is disclosed by using at least two successively arranged cards (2, 5) in a card set, means for discharging the fibrous webs from the card or the like in one direction, the discharged fibrous web layers being fed to a finishing unit (15) such as a calendar and the like, each card being provided with at least one doffing point (3, 4; 3',4'). The improvement comprises a conveying means (7, 12) carried adjacent and following the doffing point which is tiltable upwardly or downwardly at a predetermined angle. Transport devices (8, 9, 13, 14, 16) are mounted above and beneath the cards in communication with conveying means for transporting discharged webs.Type: GrantFiled: October 20, 1988Date of Patent: March 27, 1990Assignee: Hergeth Hollingsworth GmbHInventor: Werner Lasenga
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Patent number: 4888231Abstract: Airlaid fibrous webs having a primary layer having discrete particles of absorbent gelling material dispersed through at least a portion of the web airlaid over a dusting layer of essentially hydrophilic fiber material. The dusting layer acts to block the passage of particles injected in the stream of fibers forming the primary layer so as to minimize equipment plugging problems and the loss of particles or fibers through the foraminous forming element and to provide a more efficient absorbent core.Type: GrantFiled: June 30, 1987Date of Patent: December 19, 1989Assignee: The Procter & Gamble CompanyInventor: John J. Angstadt
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Patent number: 4805269Abstract: An apparatus for producing fibrous nonwoven fabrics of at least two superposed fibrous web layers of equal or different structure is disclosed by using at least two successively arranged cards (2, 5) in a card set, means for discharging the fibrous webs from the card or the like in one direction, the discharged fibrous web layers being fed to a finishing unit (15) such as a calendar and the like, each card being provided with at least one doffing point (3, 4; 3',4'). The improvement comprises a conveying means (7, 12) carried adjacent and following the doffing point which is tiltable upwardly or downwardly at a predetermined angle. Transport devices (8, 9, 13, 14, 16) are mounted above and beneath the cards in communication with conveying means for transporting discharged webs.Type: GrantFiled: January 19, 1988Date of Patent: February 21, 1989Assignee: Hergeth Hollingsworth GmbHInventor: Werner Lasenga
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Patent number: 4747188Abstract: A control system for a web-laying machine having reciprocating carriage means laying a web in folds on travelling conveyor means comprises variable speed drive means driving one of said carriage and conveyor means, conveyor measuring means measuring the travel of said conveyor means between reversals of direction of said carriage means, and control means controlling said drive means in accordance with the measured travel.Type: GrantFiled: January 2, 1987Date of Patent: May 31, 1988Assignee: Cosmopolitan Textile Company LimitedInventors: Roy Cooper, Barrie Sedgely
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Patent number: 4741941Abstract: Nonwoven web and method of making including interbonded thermoplastic fibers in an array of hollow projections extending outwardly from at least one surface of said web. The projections are separated by land areas of interbonded fibers, and the fiber orientation is greater in the projections than in the land areas. Either the projections or the land areas may be perforated as desired for controlled porosity and fluid flow properties. The nonwoven webs of the invention may be made by a number of processes but, preferably, are made by forming directly on a surface with corresponding projections with or without apertures and a vacuum assist or by forming on an apertured surface with a pressure differential sufficient to draw the fibers through the apertures forming the projections.Type: GrantFiled: November 4, 1985Date of Patent: May 3, 1988Assignee: Kimberly-Clark CorporationInventors: Stephen M. Englebert, Ann L. Wagner, Gregory S. Hafer, Nanette J. Logsdon
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Patent number: 4706338Abstract: An apparatus for forming fibre webs including a first component and a second component in the form of two textile fibres differentiated by their average fibre length or a textile fibre and wood pulp, said apparatus including a card means having a discharge zone, means for feeding said second component to said discharge zone, and means for condensing the fibres in said discharge zone whereby a highly uniform fibre web is obtained.Type: GrantFiled: March 12, 1986Date of Patent: November 17, 1987Assignee: ChicopeeInventor: Jean M. H. Anspach
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Patent number: 4598441Abstract: There is provided an apparatus for the manufacture of absorption pads for sorbing body fluid which is composed of two substantially identical so-called flake applicators each including a vacuum cylinder having shaped recesses which are so-called flake wheels. A first component layer of the absorption pad is produced on the first flake wheel and a second component layer is produced on the second flake wheel. The component layers produced on the first flake wheel are applied to the component layers produced on the second flake wheel by means of a transfer roll. A second transfer roll lifts the finished absorption pad from the second flake wheel and delivers the absorption pad by means of a vacuum belt to a machine for further processing.Type: GrantFiled: March 15, 1985Date of Patent: July 8, 1986Assignee: Winkler & Dunnebier Maschinenfabrik und Eisengiesserei GmbH & Co. KGInventor: Kurt Stemmler
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Patent number: 4583267Abstract: Apparatus for making a fibrous web comprises a plurality of carding drums (3, 4, 5, 6), which closely succeed each other in the direction of travel of the feed web and rotate in the same sense. An air-permeable collecting surface is provided, on which the fibers of the feed web are deposited which fly from the carding drums (3, 4, 5, 6). Each carding drum (4, 5, 6) which succeeds another (3, 4, 5) in the direction of travel of the feed web constitutes a worker roller associated with the preceding carding drum. In order to increase the permissible speed of travel of the feed web, an additional worker roller (20) and a clearer roller (21) are associated with each carding drum (3, 4, 5, 6) on that side thereof which is remote from the collecting surface (7).Type: GrantFiled: July 5, 1985Date of Patent: April 22, 1986Inventor: Ernst Fehrer
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Patent number: 4568581Abstract: Three dimensional molded articles suitable for use as fibrous surfaced panels for automobile trunk compartments and the like are produced by molding a heated non-woven web formed of a blend of relatively high melting fibers and relatively low melting thermoplastic fibers. The low melting fibers form a multiplicity of bonds which impart shape retentive rigidity to the nonplanar three dimensional web. A characteristic feature of the molded article is that the low melting fibers present at one surface of the web have a fibrous form, while the low melting fibers present at the opposite surface of the web have portions which exhibit a nonfibrous fused form and form said bonds.Type: GrantFiled: September 12, 1984Date of Patent: February 4, 1986Assignee: Collins & Aikman CorporationInventor: Clarence A. Peoples, Jr.
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Patent number: 4540454Abstract: A superthin absorbent disposable product is provided having an absorbing layer containing superabsorbent and a wicking layer. The product is suitable for use in disposable diapers, sanitary napkins, incontinent pads, wipes and the like.Type: GrantFiled: September 10, 1984Date of Patent: September 10, 1985Assignee: Personal Products CompanyInventors: Heinz A. Pieniak, Michael J. Iskra
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Patent number: 4534086Abstract: A fibrous feed web is delivered by a feeder to tooth-carrying carding drums, which rotate at a surface velocity which causes the fibers to flow off under centrifugal force to fly onto a continuously moving, air-permeable collecting surface, which is subjected to suction. In order to make a uniform fibrous web with simple structural means even at a high throughput, the carding drums are closely spaced apart in the direction of movement of the collecting surface and each carding drum which succeeds another carding drum in the direction of movement of the collecting surface constitutes a working roller for such preceding carding drum.Type: GrantFiled: April 26, 1984Date of Patent: August 13, 1985Inventor: Ernst Fehrer
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Patent number: 4483668Abstract: An arrangement for making a multi-layer particle board having several layers of a pressed fleece with two outer cover layers of lignocellulose-containing slender oriented particles mixed with binder material. The particles are strewn to form a lower layer onto the fleece carrier, while they are simultaneously oriented. A middle layer is applied onto the lower cover layer, and an upper cover layer is strewn onto the middle layer under orientation of the particles. At least a part of the slender particles for the cover layers strewn prior to orientation in the opposite direction relative to the transport direction of the fleece carrier, so that in the region of the cover layer facing away from the center layer, the length of the slender particles increases with the distance from the center layer.Type: GrantFiled: June 16, 1983Date of Patent: November 20, 1984Assignee: Bison Werke Bahre & Greten GmbH & Co. KGInventor: Klaus Poppelreuter