To Chain Entangle Patents (Class 28/108)
  • Patent number: 9133569
    Abstract: A mat includes inorganic fibers, a first main surface, a second main surface, a first interlaced part group and a second interlaced part group. The first interlaced part group includes a plurality of first interlaced parts arranged in rows. Each of the plurality of first interlaced parts is formed from a point on the first main surface to a point present between the first main surface and the second main surface. The second interlaced part group includes a plurality of second interlaced parts arranged in rows. Each of the plurality of second interlaced parts is formed from a point on the second main surface to a point present between the first main surface and the second main surface. A direction of rows formed by the first interlaced part group and a direction of rows formed by the second interlaced part group are different from each other.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: September 15, 2015
    Assignee: IBIDEN CO., LTD.
    Inventor: Masaki Kanaya
  • Publication number: 20150052714
    Abstract: An absorbent material including a fibrous material having a plurality of individual fibers forming a fiber matrix, a plurality of absorbent fibers, wherein the plurality of absorbent fibers are impregnated within the fiber matrix by means of a needlepunch process.
    Type: Application
    Filed: February 24, 2014
    Publication date: February 26, 2015
    Inventor: Paul Y. Fung
  • Publication number: 20150044438
    Abstract: A planar composite material comprises an UD fiber layer A made of discrete reinforcing fiber rovings and a fiber nonwoven layer B made of a thermoplastic nonwoven which may contain reinforcing fibers, wherein the layers A and B are needled to each other.
    Type: Application
    Filed: March 11, 2013
    Publication date: February 12, 2015
    Inventor: Burak Baser
  • Publication number: 20150030804
    Abstract: A sheetlike composite material including at least one layer A of a nonwoven thermoplastic fibre web or a thermoplastic film, and at least two unidirectional oriented-fibre layers B and B?, the layers B and B? having a bidirectional fibre orientation. The layers are not only needled but also stitched to one another.
    Type: Application
    Filed: February 8, 2013
    Publication date: January 29, 2015
    Inventor: Burak Baser
  • Publication number: 20150004867
    Abstract: The subject matter of the invention is a method for draping on a form, which includes a step of deposition on the form of a first fold support in the form of one or more polymer nonwoven fabrics. The invention further relates to a thermoplastic nonwoven material manufactured with a nonwoven fabric of polymer fibers.
    Type: Application
    Filed: January 28, 2013
    Publication date: January 1, 2015
    Applicant: ASTRIUM SAS
    Inventors: Jean-Baptiste Deyts, Florian Chotard, Eric Soccard
  • Patent number: 8887863
    Abstract: A mat member includes inorganic fibers, a first surface and a second surface opposite to the first surface. The first surface has a plurality of needle penetration marks and/or a plurality of needle protrusion marks. The second surface has a plurality of needle protrusion marks and/or a plurality of needle penetration marks. A plurality of needle marks are formed in the mat member by needle punching and extend from the needle penetration mark to the needle protrusion mark. An inorganic fiber bundle which includes a plurality of the inorganic fibers oriented in a closed loop configuration is formed at the needle protrusion mark.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: November 18, 2014
    Assignee: Ibiden Co., Ltd.
    Inventors: Takahiko Okabe, Daisuke Suzuki
  • Publication number: 20140322466
    Abstract: The invention refers to a process for the preparation of a microfibrous non-woven fabric based on polyester or polyamide microfibres immersed in a polyurethane matrix, and having a thickness equal to or less than 0.65 mm, a flat or slightly mottled appearance and a nap length of less than 350 ?m. The non-woven fabric is used for the preparation of coverings for consumer goods, particularly for the preparation of covers and cases for electronic products.
    Type: Application
    Filed: January 11, 2013
    Publication date: October 30, 2014
    Inventors: Giovanni Belloni, Carmine Carlo Ammirati, Giovanni Addino, Francesco Panetti, Walter Cardinali, Gianni Romani, Carlo Costa, Marcello Concezzi
  • Publication number: 20140300024
    Abstract: Provided is a nonwoven fabric for press molding and a molded product. With use of the nonwoven fabric, a fiberboard can be molded in a shorter time and even by 3D press molding a molded product with an excellent appearance quality can be obtained. The nonwoven fabric for press molding is formed of polylactic acid fibers and natural fibers, the polylactic acid fibers having a crystallization temperature on cooling of 120° C. or higher, the nonwoven fabric having a tensile strength of 20 N/cm2 or higher, and the nonwoven fabric having a tensile stress of 80 N/cm2 or less at 30% tensile elongation in a 200° C. atmosphere. The molded product is obtainable with use of the nonwoven fabric.
    Type: Application
    Filed: November 7, 2012
    Publication date: October 9, 2014
    Inventors: Hiroki Takeda, Tomomichi Fujiyama, Hiroshi Kajiyama
  • Publication number: 20140290017
    Abstract: A method for fabricating a glass fiber-based structure comprises steps: using glass fiber as material; using a fiber opening machine to disperse the glass fiber to make them loose; using a carding machine to card the dispersed glass fiber to make them finer and more even; using a fiber gathering machine to gather the carded glass fiber at a specified thickness and width; using a needle punching machine to punch the gathered glass fiber to fabricate the glass fiber into a glass-fiber felt; applying a resin to the glass-fiber felt to form a resined layer; compressing the resined glass-fiber felt to compact the glass-fiber felt in a fixed shape; and drying the fixed glass-fiber felt in a dryer to form a glass fiber-based structure, which is light but has a great thickness and a low density, and is sound-absorbing, sound-insulating, heat-resistant, heat-insulating, heat-preserving, cold-preserving, fireproof, and electricity-insulating.
    Type: Application
    Filed: April 2, 2013
    Publication date: October 2, 2014
    Applicant: HSU TAI GLASS FIBER CO., LTD.
    Inventor: CHUN-HSU CHIEN
  • Publication number: 20140235131
    Abstract: 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: Application
    Filed: October 25, 2011
    Publication date: August 21, 2014
    Applicant: ENEXIS CO., LTD.
    Inventors: Gapho Yun, Giho Yun, Hakbum Kim, Kwang Hui So, Eunhak Song
  • Publication number: 20140120322
    Abstract: A non-woven electret fibrous web for electrostatic adsorption and odor elimination and the preparation process thereof. In certain exemplary embodiments, the non-woven electret fibrous web includes a multiplicity of electret fibers, at least one of a plurality of photo-catalytic fibers or a plurality of multi-component fibers; and optionally, at least one of a plurality of chemically-active particulates, a plurality of carbon-based fibers, or a plurality of mono-component thermoplastic fibers. In other exemplary embodiments, carding and cross-lapping or air-laying processes are disclosed for making nonwoven fibrous webs including electret fibers and one or more of photocatalytic fibers, chemically-active particulates, multi-component fibers, mono-component thermoplastic fibers, or carbon-based fibers.
    Type: Application
    Filed: June 27, 2012
    Publication date: May 1, 2014
    Applicant: 3M Innovative Properties Company
    Inventors: Xiaoshuan Fu, Rui Chen, Qiang Xu, Jean Le normand, Hendrik Both, Tien T. Wu, Andrew R. Fox
  • Publication number: 20140041171
    Abstract: The invention relates to a needle-punched nonwoven fabric wherein short fibers of polylactic acid containing an epoxy compound account for 20 to 40 mass % while short fibers of polyethylene terephthalate account for 80 to 60 mass %, the metsuke (weight per unit surface area) being 100 to 200 g/m2, and the tensile strength per metsuke at 20° C. being 0.30 to 0.60 (N/cm)/(g/m2) in the longitudinal direction and 0.48 to 0.90 (N/cm)/(g/m2) in the lateral direction. The present invention provides needle-punched nonwoven fabrics that are low in environment load, high enough in durability to serve as interior finishing material for automobiles, and high in stretchability during molding.
    Type: Application
    Filed: October 18, 2013
    Publication date: February 13, 2014
    Applicant: Toray Industries, Inc.
    Inventors: Kazuya Matsumura, Hiroshi Kajiyama, Shusaku Narita, Seiji Yokoi, Shuntaro Ishii
  • Publication number: 20130276417
    Abstract: The above objectives are accomplished according to the present invention by providing a filter medium for operating environments needing static electricity dissipation to help reduce ignition sources comprising: a substrate of non-woven felt including a polymeric fiber; a conductive scrim having a grid of conductive filaments adjacent to said substrate layer; and, a top layer of non-woven felt including a polymeric fiber and copolymer fiber blend having a melt temperature greater than 100° C. wherein said substrate layer, said conductive scrim and said top layer are manufactured into said filter medium by mechanical web formation.
    Type: Application
    Filed: April 24, 2012
    Publication date: October 24, 2013
    Applicant: SOUTHERN FELT COMPANY, INC
    Inventors: Eric Winters, John Lewis, Brian Fields
  • Publication number: 20130255047
    Abstract: A hand held felting device includes a body with one or more felting needles and a handle attached thereto for manually felting materials. A motor is provided in the body and is configured to selectively move a shaft reciprocally along the vertical axis upon receipt of power from a power source. The felting needle(s) are mounted to the shaft in the body and thus are configured to move continuously in a reciprocal motion when activated by the motor to felt two or more materials together as a user manually moves the device relative to two or more materials. A safety switch is included with the device in order to selectively activate the motor to move the needle(s). A guard may be operatively associated with the switch to prevent access to the needle(s) and reduce user injury. The needle(s) can be replaced as needed.
    Type: Application
    Filed: April 3, 2012
    Publication date: October 3, 2013
    Applicant: SIMPLICITY PATTERN CO.INC.
    Inventor: David SASUR
  • Publication number: 20130177754
    Abstract: A reinforced textile support, particularly for bituminous membranes, made of at least one layer of polyester non woven web and continuous high modulus reinforcement yarns longitudinally set with respect to said layer. The reinforcement yarns consist of cellulosic fibre multi-filaments of the Lyocell type. The assembly is bound by mechanical needling or water entangling, stabilised by means of thermal treatment at a temperature of 200-250° C. and consolidated by means of a chemical binder.
    Type: Application
    Filed: November 10, 2011
    Publication date: July 11, 2013
    Inventor: Massimo Migliavacca
  • Publication number: 20130152792
    Abstract: A non-woven textile based filter media is produced from polyester fiber generated using recycled polyethylene terephthalate (PET) beverage bottles, and that non-woven textile based filter media is used to make an air filter. By controlling the diameters and lengths of the PET derived polyester fibers, a non-woven textile based filter media that exhibits a natural Minimum Efficiency Reporting Value (MERV) of about 8 (without requiring electrostatic treatment) and a pressure drop of 2.9 PSI or less can be achieved. A related exemplary embodiment is an air filter fabricated entirely from recycled materials, including a recycled cardboard frame, the non-woven textile based filter media made from recycled PET derived polyester fibers, and a support structure made of recycled plastic or metal wire.
    Type: Application
    Filed: February 12, 2013
    Publication date: June 20, 2013
    Applicant: XEXTEX CORPORATION, USA
    Inventor: Xextex Corporation, USA
  • Publication number: 20130146392
    Abstract: A method for producing a sound-deadening insert of a silencer of an exhaust-gas discharge system in an internal-combustion engine of a vehicle; the method comprises the steps of providing a mattress made up of continuous voluminized fibres of sound-deadening material, and needling the mattress so as to cause a compacting/interweaving of the fibres in order to obtain compacting lines.
    Type: Application
    Filed: December 6, 2012
    Publication date: June 13, 2013
    Applicant: SO.LA.IS - SOCIETA LAVORAZIONE ISOLOANTI - S.r.l. CON UNICO SOCIO
    Inventor: SO.LA.IS - SOCIETA LAVORAZIONE ISOLOANTI - S.r.l. CON UNICO SOCIO
  • Publication number: 20120235438
    Abstract: The invention relates to an anti-slip insert mat having a carrier layer and a textile catching layer formed of filaments/fibers, wherein the catching layer has raised regions and compressed regions of lower height, wherein the raised regions are formed by free ends of the fibers and the compressed regions of the catching layer are formed by permanently pressing the free ends of the fibers.
    Type: Application
    Filed: August 27, 2010
    Publication date: September 20, 2012
    Applicant: IDEAL AUTOMOTIVE GMBH BAMBERG
    Inventors: Hubert Röding, Björn Fischer
  • Publication number: 20120115384
    Abstract: The present invention is directed to a resorbable hemostatic nonwoven felt suitable for use in laparoscopic procedures and to methods for manufacturing said felt.
    Type: Application
    Filed: August 4, 2011
    Publication date: May 10, 2012
    Inventors: Benjamin D. Fitz, Dwayne Looney, Thomas Lee Craven, Clifford Dey, Atul Garg
  • Publication number: 20120067220
    Abstract: In some embodiments, the present invention provides filtration media for the treatment of flue gas streams and methods of making and using the same. In one embodiment, a filtration medium comprises a pollutant absorbent layer comprising a plurality of activated carbon fibers, a first woven fabric, and a second woven fabric, wherein the pollutant absorbent layer is positioned between the first woven fabric and the second woven fabric.
    Type: Application
    Filed: August 26, 2011
    Publication date: March 22, 2012
    Inventors: Vedagiri Velpari, Jian Meng, Paul A. Westbrook, Timothy E. Marsh, Steven Joel Parks
  • Patent number: 7998889
    Abstract: An hydroentangled integrated composite nonwoven material, includes a mixture of randomized continuous filaments, and synthetic staple fibers, where there are no thermal bonding points between the continuous filaments. The nonwoven material exhibits a cumulative pore volume, measured by PVD in n-hexadecane, in the pore radius range 5-150 ?m, where at least 70% of the cumulative pore volume is in the pores with a pore radius above 45 ?m. The nonwoven material also exhibits a cumulative pore volume, which when the synthetic staple fibers are chosen from the group of polyethylene, polypropylene, polyester, polyamide, and polylactide staple fibers is at least 9 mm3/mg, and when the synthetic staple fibers are lyocell staple fibers is at least 6 mm3/mg.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: August 16, 2011
    Assignee: SCA Hygiene Products AB
    Inventors: Anders Stralin, Camilla Bemm, Mikael Strandqvist
  • Publication number: 20110154629
    Abstract: A circular needling table for needling a textile structure made from an annular fiber preform, the table including: a horizontal annular platen for having the annular fiber preform placed thereon; drive means for driving the fiber preform in rotation about the axis of the platen; a needling device having a needling head extending over an angular sector of the platen and driven in vertical motion relative to the platen; and guide means for guiding the fiber preform under the needling head.
    Type: Application
    Filed: December 22, 2010
    Publication date: June 30, 2011
    Applicant: MESSIER-BUGATTI
    Inventor: Vincent DELECROIX
  • Publication number: 20100293769
    Abstract: Carbon-carbon composites made by needling together woven or nonwoven fabric made from carbon-containing fibers followed by carbonizing the fabric preforms. The carbon fiber preforms can be needled either in a carbonized or in an uncarbonized state. The un-carbonized fiber preforms would go through a carbonization/heat-treat step following the needling process. Final preform thickness and fiber volume is also controlled at carbonization, for instance by varying the level of pressure applied to the preforms during carbonization. Thus, the preforms may be unconstrained during carbonization (i.e., no pressure is applied to them). Or the preforms may be constrained during carbonization, typically by means of applying pressure (e.g., weight placed on top of the preforms). The preforms are then infiltrated via CVD/CVI processing in order to increase their density, resulting in a carbon-carbon composite which is suitable for use as, for instance, a brake disc or pad in aircraft and automotive brake systems.
    Type: Application
    Filed: May 20, 2009
    Publication date: November 25, 2010
    Inventors: Mark L. La Forest, Neil Murdie, Mark C. James
  • Publication number: 20090233075
    Abstract: A fire blocking non-woven textile containing a first carded web of char-forming fibers containing aramid or melamine/formaldehyde fiber and a second carded web of oxygen-depleting fibers comprising a blend of polyacrylonitrile copolymer with a halogen comonomer and a polyester polymer. The webs may be needled-punched or thermally bonded and remain as separate layers separating the action of the char forming and oxygen depleting layers to optimize char strength, provide a light weight product, which may satisfy 16 CFR 1633 at thicknesses of up to 3.0 mm.
    Type: Application
    Filed: April 27, 2009
    Publication date: September 17, 2009
    Applicant: FREUDENBERG NONWOVENS LIMITED PARTNERSHIP
    Inventors: Eberhard Link, James Frasch
  • Publication number: 20090188091
    Abstract: Method for producing Fiber insulation batts suitable for building thermal insulating applications are made using polymer fibers such as PET. A mixture of staple fibers and binder fibers are used to make the batt. The batt has a bulk density of 6-14 kg/m3, a thermal conductivity of 35-50 mW/m-K and a lambda*density value of from 250-550. The batts can be made by forming a web of the fibers, and calibrating and heat-setting the web. The web can be formed using pneumatic or mechanical carding processes. In some processes, the batt can be made by forming a stack of multiple plies of the web and calibrating and heat-setting the stack.
    Type: Application
    Filed: April 26, 2007
    Publication date: July 30, 2009
    Applicant: LIBELTEX BVBA
    Inventors: Jozef Van Kerrebrouck, Marc Cottens
  • Publication number: 20080313873
    Abstract: The present disclosure relates to a highloft needlepunched fabric wherein said fabric may be formed by needlepunching a web at a penetration density of less than or equal to about 150 penetrations per square centimeter and a penetration depth of about 5-20 mm, wherein the needles are spaced apart 5 mm or greater.
    Type: Application
    Filed: December 12, 2007
    Publication date: December 25, 2008
    Applicant: Freudenberg Nonwovens, L.P.
    Inventors: Eberhard Link, Amelia Tosti, James Frasch, Ashutosh P. Karnik, Joseph Wallen, Anke Bold
  • Publication number: 20080124993
    Abstract: A lightweight (2.25 to 6 ounce per square yard) fabric mechanically bonded through needle-punching formed of fire-retardant fibers with no post-treatment. The composition of the fibers is typically 75 to 85% fire-retardant cellulose and 15 to 25% fire inhibiting modacrylic fiber with a high limited oxygen index. The cellulosic fiber in particular can be rayon or lyocell saturated with a fire-retardant agent such as diammonium phosphate. The cellulosic fiber acts as a char-former thereby creating a carbonized thermal insulator. The modacrylic is an acrylic modified fiber with additional monomers which reduce fuel value and help limit the available oxygen to the fire cycle. The modacrylic component also serves to add strength to the char-forming fiber by softening and thereby binding to the charring fibers. The fibers are blended together and homogenized into a lightweight fiber web which is stacked in staggered layers to form a low density batting.
    Type: Application
    Filed: November 27, 2006
    Publication date: May 29, 2008
    Inventor: Paul H. Brady
  • Patent number: 6583074
    Abstract: A nonwoven, metal fabric is formed by providing a mass of loose fibers with sufficient lubricating oil for them to be carded without disintegration of the fiber web. The fiber web is then lapped and needled to form a metal fabric of superior strength, density, and thermal insulation properties.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: June 24, 2003
    Assignee: Global Material Technologies Incorporated
    Inventors: Alexander Krupnik, Terrence P. Kane, Kurt H. Schild
  • Patent number: 6521554
    Abstract: A wear resistant stitchbonded fabric is provided. The stitchbonded fabric includes a first yarn loosely stitchbonded into the substrate so as to substantially cover one side of the substrate. The fabric further includes a second yarn that is tightly stitchbonded into the substrate. In one embodiment, the nonwoven substrate can further contain binder fibers which are fused to adjacent fibers. Through this configuration, a fabric is produced having a tapestry-like look. The fabric can be used in many diverse applications, such as being used as an upholstery fabric.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: February 18, 2003
    Assignee: Tietex International, Ltd.
    Inventor: Martin Wildeman
  • Publication number: 20030019089
    Abstract: A method is disclosed for the production of a textile surface construction of at least one base layer and mesh-needled to the base layer a useful surface layer showing an optically non-uniform, substantially rapport-free upper side. Apart from staple fibers, the upper side contains a multitude of stochastically distributed fiber elements with a pre-selected, possible variable geometric form, which distinguish from the staple fibers in terms of color and/or fiber characteristics. In addition, the present invention relates to a textile surface construction which is produced by such a method.
    Type: Application
    Filed: July 2, 2002
    Publication date: January 30, 2003
    Applicant: FILZFABRIK FULDA GMBH & CO.
    Inventor: Ralf Winter
  • Patent number: 5972814
    Abstract: A reinforced nonwoven metal fabric is disclosed. A mass of loose metal fibers is processed through suitable textile apparatus to result in a metal fiber web, which is then lapped to form a multi-layered structure. This structure is then formed into a metal fabric via needle-punching. A suitable backing is then introduced during or after the needle-punch process, resulting in a reinforced nonwoven metal fabric having superior strength and durability.
    Type: Grant
    Filed: June 25, 1997
    Date of Patent: October 26, 1999
    Assignee: Global Material Technologies, Inc.
    Inventors: Kurt H. Schild, III, Terrence Kane, Alex Krupnik
  • Patent number: 5515585
    Abstract: The invention relates to the field of needling processes for forming fibrous preform structures. The invention is particularly useful in forming fibrous preform structures suitable for subsequent processing into high temperature resistant composite structures such as carbon/carbon aircraft brake disks. The process according to the invention compensates for fiber pull back induced by fiber resilience, and for compaction in previously needled layers induced during subsequent needling passes. According to a further aspect of the invention, Z-fiber distribution throughout the thickness of the fibrous preform structure may be manipulated as necessary to achieve a desired distribution.
    Type: Grant
    Filed: July 25, 1994
    Date of Patent: May 14, 1996
    Assignee: The BF Goodrich Company
    Inventors: Philip W. Sheehan, Ronnie S. Liew
  • Patent number: 5475904
    Abstract: Two laps are needled together between longitudinal guide tubes which maintain spacing between the laps and downstream of the needling position, the tubes release an interleaving material between the laps and between the rows of bridges formed by needling, the interleaving material consisting of resin, powder, fibers, tubes, wires, threads, and/or electrical conductors.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: December 19, 1995
    Inventor: Guy Le Roy
  • Patent number: 5350615
    Abstract: A method and device are disclosed for forming reinforcement element formed of fibers distributed along three dimensions, wherein, a continuous fiber is introduced in a substrate resting on a support formed of such fibers crossed in at least two directions, by stitching, from the free face of said substrate opposite said support by means of a needle driven with a reciprocal movement, a relative movement being in addition generated between said support and said needle so that said continuous fiber is formed inside said substrate of a succession of consecutive segments forming a zig-zag line.The invention is remarkable in that:said needle is curved and imposes on each segment of said continuous fiber a similar curved form; andthe reciprocal movement of said curved needle occurs while rotating about an axis perpendicular to the plane of said needle and disposed on the concave side thereof.
    Type: Grant
    Filed: April 14, 1993
    Date of Patent: September 27, 1994
    Assignee: Societe Nationale Industrielle et Aerospatiale
    Inventor: Jean-Louis Darrieux
  • Patent number: 5153056
    Abstract: The invention relates to a lining textile and a method of manufacturing same.It comprises a woven or knitted textile support (1) and at least one non-woven layer (2).According to the invention, the non-woven layer or layers (2) are bonded to the knitted or woven textile support (1) by fluid jet needling.
    Type: Grant
    Filed: February 28, 1990
    Date of Patent: October 6, 1992
    Assignee: Lainiere De Picardie
    Inventor: Pierre Groshens
  • Patent number: 4937924
    Abstract: In order to ensure a desirable withdrawal of the felt in an apparatus for needling a felt from one side, the stripper plate (3) is provided on that side which faces the support (2) for the felt with guide ribs (7), which extend between the longitudinal rows of holes (4) and protrude from the underside surface of the plate and have a height amounting to 0.2 to 2 times the diameter of the holes.
    Type: Grant
    Filed: May 11, 1989
    Date of Patent: July 3, 1990
    Assignee: Textilmaschinenfabrik Dr. Ernst Fehrer Aktiengesellschaft
    Inventor: Rudolf Leuchtenmuller
  • Patent number: 4051288
    Abstract: A method of producing a reinforced sheet by feeding a layer of foam material to a stitching machine at a rate greater than that at which the stitched material is produced by the machine. The stitching in the product is thus disposed below the surface of the foam and hence is not destroyed during subsequent flame-bonding.
    Type: Grant
    Filed: May 20, 1976
    Date of Patent: September 27, 1977
    Inventors: Alister Wilson, William David Marr, George Arthur Guild