Staple Fiber Blends Patents (Class 57/252)
  • Patent number: 5910361
    Abstract: A hybrid yarn is made up of an intimate mixture of spun yarns of reinforcing fibers and spun yarns of thermoplastic matrix fibers. The spun yarns are obtained by cracking with slow, gradual stretching of the multifilaments. After stretching, parallel fibers are wrapped with a continuous thermoplastic filament. The invention may be used to produce hot-stamped parts.
    Type: Grant
    Filed: July 15, 1991
    Date of Patent: June 8, 1999
    Assignee: SA Schappe
    Inventors: Jean Guevel, Marc Francois, Guy Bontemps
  • Patent number: 5848524
    Abstract: A twisted yarn structure includes constituent fibers which extend between a surface and a core of the yarn structure so that at least one portion of each fiber is trapped and bound within the yarn structure by portions of other fibers. The fibers can extend cyclically or in random fashion between an inner region and an outer region of the yarn, and can be twisted in subgroups along the length of the yarn structure to be locked in position therein. To produce the yarn structure having fibers which cyclically extend between the inner and outer regions, the fibers of a drafted strand of fibers from front drafting rollers are spun and passed through an oscillating guide before being wound on a spindle.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: December 15, 1998
    Inventors: James Lappage, Nigel Anthony Gull Johnson, Owen Leslie Roger Hartshorn
  • Patent number: 5749212
    Abstract: A jet spun twistless core/wrapped elastic yarn product. The core yarn of the core/wrapped yarn is a unitary elastomeric filament. The core yarn is contiguously provided around the core with staple fibers. The inner portion of the staple fibers extends in the same direction as the elastomeric core and an outer wrapper portion of the staple fibers is helically wound around and holds the inner portion of the staple fibers on the core.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: May 12, 1998
    Assignee: Dixy Yarns, Inc.
    Inventors: John Joseph M. Rees, Leonard L. Hixon, Jr.
  • Patent number: 5724800
    Abstract: The ring spinning method drafts a sliver in a multi-stage drafting system where the sliver acquires a total draft in a range of from 60 to 150-fold. Following outlet from the last nip of the drafting system, the drafted sliver is conveyed without drafting over a guide path in which the fiber band is condensed to form a compact fiber strand of not more than 2.5 millimeters width and preferably less than 1 millimeter in width. At the end of the guide path, the fiber strand passes through a twist inhibiting nip between two rollers and is then passed by twist distribution to a ring spinning device. The yarn produced possesses a quality with respect to hairiness and neps.
    Type: Grant
    Filed: November 19, 1996
    Date of Patent: March 10, 1998
    Assignee: Rieter Machine Work, Ltd.
    Inventors: Angelo Lucca, Herbert Stalder
  • Patent number: 5699659
    Abstract: A method for producing substantially 100% polyester yarns on an open end spinning machine is described. The process involves acting on substantially 100% polyester sliver made of high tenacity, fine denier fibers with a negative tooth combing roll to individualize the fibers and feed them to the rotor of an open end spinning machine. Superior quality industrial gauge yarns can be produced from fine denier, high tenacity polyester fibers according to this method at a high rate of throughput and with few ends down.
    Type: Grant
    Filed: March 8, 1996
    Date of Patent: December 23, 1997
    Assignee: Waverly Mills, Inc.
    Inventor: Tony F. Caviness
  • Patent number: 5694759
    Abstract: A method for producing substantially 100% polyester yarns on an open end spinning machine is described. The process involves acting on substantially 100% polyester sliver made of high tenacity, fine denier fibers with a negative tooth combing roll to individualize the fibers and feed them to the rotor of an open end spinning machine. Superior quality industrial gauge yarns can be produced from fine denier, high tenacity polyester fibers according to this method at a high rate of throughput and with few ends down.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: December 9, 1997
    Assignee: Waverly Mills, Inc.
    Inventor: Tony F. Caviness
  • Patent number: 5624752
    Abstract: There is provided a spun yarn of a polybenzazole fiber having a single fiber fineness of 1 to 3 deniers and an average fiber length of 30 to 200 mm, the spun yarn having a tenacity of 15 g/d or higher and satisfying the following relationship:10.0.ltoreq.K.multidot.(L).sup.1/3 .ltoreq.15.0 (1)where K is the twist constant expressed by T/(Ne).sup.1/2 and L is the average fiber length in millimeter, and where T is the number of twist per inch and Ne is the British cotton count of the spun yarn. The spun yarn can be used for various purposes because it has high tenacity, high heat resistance, high flame retardance, good feeling, and good appearance.
    Type: Grant
    Filed: July 1, 1996
    Date of Patent: April 29, 1997
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventor: Toshiaki Hokudoh
  • Patent number: 5486417
    Abstract: A blend of fibers is made of about 51 to 90% by weight of base fibers (a) selected from triangular trilobal fibers having a modification ratio ranging from 2.4 to 3.4; hollow pentagonal fibers; standard trilobal fibers having a modification ratio of at least 2.6; pointed lobe trilobal fibers having a modification ratio of at least 2.6; and mixtures thereof; and about 10 to 49% by weight of accent fibers (b) selected from standard trilobal fibers having a modification ratio ranging from 1.7 to 2.4; pointed lobe trilobal fibers having a modification ratio ranging from 2.0 to 2.9; and mixtures thereof. The fibers (a) and (b) have a denier per filament within the range represented by the area enclosed by sides A, B, C, D and E of FIG. 1. Where fibers (a) and (b) are both pointed lobe trilobal fibers with the same modification ratio and denier per filament, then fibers (a) are delustered and fibers (b) are undelustered.
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: January 23, 1996
    Assignee: BASF Corporation
    Inventors: Gerry A. Hagen, Wei Li
  • Patent number: 5481864
    Abstract: A method for producing high quality fabrics using recycled fabric scraps is disclosed. By use of pre-gin contacting of the virgin carrier fibers as well as moistening the fiber scraps that are recycled, fiber length and fiber uniformity percentages are maintained higher then typically achieved by the prior art. The process has many advantages such as: the need for redyeing the resulting material is minimized and shrinkage is substantially reduced.
    Type: Grant
    Filed: July 11, 1994
    Date of Patent: January 9, 1996
    Inventor: Herbert J. Wright
  • Patent number: 5477669
    Abstract: A process for stretching natural staple fibers to reduce the diameter includes the steps of treating a substantially untwisted traveling assembly of natural fibers to plasticize the natural fibers, twisting the traveling assembly sufficiently to substantially prevent drafting of the assembly during subsequent stretching, subsequently stretching the twisted assembly and setting the stretch. Staple fibers having reduced diameters are provided as a result of the stretching process.
    Type: Grant
    Filed: May 6, 1994
    Date of Patent: December 26, 1995
    Assignee: Commonwealth Scientific & Industrial Research Organisation
    Inventors: David G. Phillips, John J. Warner
  • Patent number: 5427156
    Abstract: A woven or knitted cotton fabric having a supple and flexible hand made of a spun yarn of 5's to 250's English count including cotton fibers; each of which has an effective fiber length of at most 1.8 inches and a micronaire fineness of at most 3.8 .mu.g/inch; the average of bending rigidity values (B) in the warp or wale direction and weft or course direction of the fabric as measured by a KES-FB2 tester being in the range of 0.002 to 0.100 gf.cm.sup.2 /cm; and the average of shear stiffness values (G) in the warp or wale direction and weft or course direction of the fabric as measured by a KES-FB1 tester being in the range of 0.2 to 1.70 gf/cm.degree.
    Type: Grant
    Filed: March 22, 1994
    Date of Patent: June 27, 1995
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventor: Minoru Saito
  • Patent number: 5398492
    Abstract: Industrial dust mop having a homogenous yarn composed of high melt staple fibers and low melt staple which has been heated to homogeneously melt the low melt fibers throughout the yarn to form a fused yarn product in the mop.
    Type: Grant
    Filed: April 16, 1993
    Date of Patent: March 21, 1995
    Assignee: Milliken Research Corporation
    Inventor: Manuel A. Thomas
  • Patent number: 5397622
    Abstract: Industrial dust mop having a homogenous yarn composed of high melt staple fibers and low melt staple which has been heated to homogeneously melt the low melt fibers throughout the yarn to form a fused yarn product in the mop.
    Type: Grant
    Filed: May 2, 1994
    Date of Patent: March 14, 1995
    Assignee: Milliken Research Corporation
    Inventor: Manuel A. Thomas
  • Patent number: 5331801
    Abstract: The subject invention provides a new method for manufacturing yarns using recycled cotton waste and a new type of recycled cotton yarn. Various types of cotton waste materials such as manufacturing by-products and post-consumer material are used in conjunction with virgin yarns to produce recycled yarns of sufficient quality to be used for garment manufacture.
    Type: Grant
    Filed: January 24, 1992
    Date of Patent: July 26, 1994
    Assignee: Eco Fibre Canada Inc.
    Inventor: David S. Heifetz
  • Patent number: 5330538
    Abstract: A method for producing a dyed cotton fabric having an improved characteristic salt-and-pepper look and the product thereof. The process includes forming a plurality of individual cotton yarns having a twist multiple value of at least 4.6 and, preferably, subjecting the twisted cotton yarn to exposure to a caustic solution under tension. The yarn then is dyed under tension by exposure to a dye liquor. The treated yarn is used to produce a woven fabric, which after being abraded, has a lighter portion dispersed throughout a darker portion. In the preferred embodiment the twist multiple value of the cotton yarn threads varies within the range of between 4.6 and 10.5.
    Type: Grant
    Filed: March 10, 1989
    Date of Patent: July 19, 1994
    Assignee: Burlington Industries
    Inventors: Edward W. Teague, Jarvis L. Clark, Max H. Hance
  • Patent number: 5313774
    Abstract: A blended staple fiber yarn having a high grade cotton yarn-like touch, hand and appearance and superior mechanical strength, abrasion resistance, flame resistance and scratching resistance is comprised of 30 to 80 parts by weight of extremely fine polyester staple fibers having a denier of 0.9 or less and 20 to 70 parts by weight of super high modulus staple fibers having a Young's modulus of 4000 kg/mm.sup.2 or more, and can be produced by a specific draft zone system spinning process in which individual filaments are drawn-cut and the resultant staple fibers are cohered to each other to form a spun yarn.
    Type: Grant
    Filed: July 23, 1992
    Date of Patent: May 24, 1994
    Assignee: Teijin Limited
    Inventors: Mitsuo Matsumoto, Nobuo Takahashi, Yoshiyuki Sasaki
  • Patent number: 5284009
    Abstract: The present invention relates to ply-twisted yarns comprising fiber blends of about 70 to 90 weight percent base fiber and about 10 to 30 percent non-melt compatible polyolefin fiber having a melting point of about 130.degree. to 170.degree. C. The base fiber may be polyamides, polyesters, or fiber mixtures thereof. The ply-twisted yarns may be heat-set by a conventional process, whereupon the polyolefin fibers melt and bond to each other but do not bond to the base fibers.
    Type: Grant
    Filed: March 9, 1993
    Date of Patent: February 8, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Wae-Hai Tung, Leif R. Simonsen, Yashavant V. Vinod, Frank Werny
  • Patent number: 5228411
    Abstract: An adjustable and stable cotton bird perch for use in a bird cage is comprised of a plurality of tightly twisted skeins of cotton threads defining a dense cotton cable. The cable has attachment members secured to the ends thereof for securing the cable to the sides of the bird cage. The formed cotton cable has a density of about fifty to seventy percent greater than conventional cotton rope so as to render the cable sufficiently flexible to be readily formed into a plurality of different set configurations and sufficiently rigid so as to retain a set configuration without the need for additional support intermediary of its ends. By varying the configuration of the cable, a wide variety of stable cotton bird perch configurations can be readily provided within the cage.
    Type: Grant
    Filed: September 2, 1992
    Date of Patent: July 20, 1993
    Assignee: Booda Products, Inc.
    Inventor: Anthony O'Rourke
  • Patent number: 5215795
    Abstract: An shock-absorbing air bag for an automobile or aircraft, has a high heat and flame resistance and satisfactory mechanical strength and comprises a high density woven fabric composed of warps and wefts each comprising (a) 0 to 90% by weight of thermoplastic synthetic fibers, for example, polyester fibers, having a denier or 5 or less and a Young's modulus of 1300 kg/mm.sup.2 or less, and (b) 10 to 100% by weight of heat resistant organic fibers, for example, aramid fibers, having a denier of 2 or less and a thermal decomposition temperature of 300.degree. C. or more, the woven fabric preferably having a high cover factor of 1900 or more.
    Type: Grant
    Filed: June 14, 1991
    Date of Patent: June 1, 1993
    Assignee: Teijin Limited
    Inventors: Mitsuo Matsumoto, Nobuo Takahashi, Hideo Nakagawa, Masayuki Takahashi, Kunio Nishimura
  • Patent number: 5188892
    Abstract: Spun textile yarns from new polyester staple fiber, and downstream textile articles, such as fabrics and garments, made from such, and blends thereof, wherein the staple fiber is of intentionally mixed denier, the higher denier being about twice the lower denier. Such staple fiber and precursor tows are preferably made by spinning filaments of different deniers, and collecting them in the same filament bundle on the same spinning machine, from orifices/capillaries of different diameters and/or throughputs.
    Type: Grant
    Filed: March 25, 1992
    Date of Patent: February 23, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Teddy H. Grindstaff
  • Patent number: 5128197
    Abstract: A woven fabric woven from fibers of a shape memory polymer alone or a blend of said fibers and ordinary natural or synthetic fibers.
    Type: Grant
    Filed: October 12, 1989
    Date of Patent: July 7, 1992
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Kazuyuki Kobayashi, Shunichi Hayashi
  • Patent number: 5087499
    Abstract: The present invention relates to improvements in puncture-resistant and medicinal treatment garments. Garments made from fibers such as KEVLAR.RTM. and designed to deter penetration of objects are subjected to an additional brushing step to enhance the fibers' abilities to prevent penetration of sharp needle-like penetrating objects. The fibers may also be coated with an abrasive material to further engage and deflect penetrating objects. In another aspect of the invention, the fibers may be coated with a disinfectant or pharmaceutical agent. The coated fibers, having the improved fiber structure resulting from the brushing step, may be used in fabrics to treat skin conditions, disinfect penetrating objects in puncture-resistant materials, or as a disinfecting prevention fabric for use in textiles in high risk infection areas such as hospitals and public facilities.
    Type: Grant
    Filed: May 9, 1990
    Date of Patent: February 11, 1992
    Inventor: Thomas M. Sullivan
  • Patent number: 5077126
    Abstract: Staple yarns of cotton and high modulus fiber are wet and then dried under tension to provide warp yarn for durable, abrasion resistant fabrics.
    Type: Grant
    Filed: March 5, 1990
    Date of Patent: December 31, 1991
    Assignee: E. I. Du Pont de Nemours & Company
    Inventor: James R. Green
  • Patent number: 4942089
    Abstract: Rapidly shrinking fibers hardly soluble in water and capable of shrinking in water at 20.degree. C. by not less than 30% in not longer than 10 seconds are obtained, for example, by spinning, drawing and heat-treating a carboxy-modified polyvinyl alcohol under specific conditions. Yarns made from a fiber of this kind in conjunction with a fiber slowing shrinking in water as well as nonwoven fabrics made by incorporating yarns containing said rapidly shrinking fibers in nonwoven fabric shrinkable upon absorption of water are suited as means of tightly fitting edge portions of disposable diapers to the thigh.
    Type: Grant
    Filed: December 14, 1988
    Date of Patent: July 17, 1990
    Assignee: Kuraray Company Limited
    Inventors: Tsuneo Genba, Junichi Yoshinaka, Shingo Nakanishi
  • Patent number: 4918912
    Abstract: Spun yarns and fabrics having a high level of both abrasion and cut-resistance are disclosed. Such yarns are made from a blend of about 40-60 percent para-aramid fiber, about 20-40 percent nylon fiber, and about 10-30 percent acrylic fiber. The yarns and fabrics are particularly useful in making articles of clothing such as socks.
    Type: Grant
    Filed: May 19, 1989
    Date of Patent: April 24, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Grant H. Warner
  • Patent number: 4882222
    Abstract: A blend of conventional carpet fibers (e.g. nylon fibers) and high shrinkage fibers (e.g. acrylic fibers) is described. Saxony carpet made from the blend has better appearance retention characteristics than corresponding saxony carpet made from the conventional carpet fibers.
    Type: Grant
    Filed: March 31, 1988
    Date of Patent: November 21, 1989
    Assignee: Monsanto Company
    Inventors: Arthur Talley, Jr., Arnold E. Wilkie
  • Patent number: 4809493
    Abstract: Rapidly shrinking fibers hardly soluble in water and capable of shrinking in water at 20.degree. C. by not less than 30% in not longer than 10 seconds are obtained, for example, by spinning, drawing and heat-treating a carboxy-modified polyvinyl alcohol under specific conditions. Yarns made from a fiber of this kind in conjunction with a fiber slowing shrinking in water as well as nonwoven fabrics made by incorporating yarns containing said rapidly shrinking fibers in nonwoven fabric shrinkable upon absorption of water are suited as means of tightly fitting edge portions of disposable diapers to the thigh.
    Type: Grant
    Filed: October 21, 1986
    Date of Patent: March 7, 1989
    Assignee: Kuraray Company Limited
    Inventors: Tsuneo Genba, Junichi Yoshinaka, Shingo Nakanishi
  • Patent number: 4771596
    Abstract: A fine heterogeneous hybrid spun yarn is blended from electrostatically conductive staple fibers and electrostatically non-conductive staple fibers so that the yarn is electrostatically conductive only over short discrete lengths. When used in pile fabrics, such as carpets, the fine yarn is introduced with at least some of the carpet facing yarns during the carpet making operations. The resultant carpet structure substantially eliminates electrostatic shock to a human walking across the carpet and approaching a ground such as a light switch, radio, or another person. Such a carpet does not constitute a dangerous floor covering.The unique heterogeneous hybrid spun blended yarn is achieved by process techniques completely contrary to accepted blending practices.
    Type: Grant
    Filed: June 12, 1972
    Date of Patent: September 20, 1988
    Assignee: Brunswick Corporation
    Inventor: William G. Klein
  • Patent number: 4729215
    Abstract: Improved yarn for manufacturing artificial fur, having underfur and guard hairs. The guard hairs have a multiplicity of staple fibers having tapered ends. The underfur fibers are shorter and of less denier. The guard hairs and underfur fibers are relatively longitudinally slidable to separate at least some of the fibers from others of the fibers.Temporary binding means may be connected to maintain the respective fibers in continuity and resistant to longitudinal sliding separation during one or more fabrication operations.Inactivation of the binding means breaks the continuity of said pile fibers whereupon at least some of the fibers may be longitudinally slidingly separated without being broken.
    Type: Grant
    Filed: October 28, 1986
    Date of Patent: March 8, 1988
    Assignee: Toray Industries, Inc.
    Inventors: Kenji Sato, Seiichi Yamagata, Masaaki Sakai
  • Patent number: 4668552
    Abstract: A pile fabric is formed from interengaging ground yarns and cut pile tufts formed of wrap yarns extending upwardly from the ground yarns to form the face of the fabric. Each of the wrap yarns comprises a body strand of untwisted staple fibers and a binder strand helically wrapped around the body strand. The binder strands are preferably crimped textured strands and formed of a thermoplastic polymer having heat shrinkable and fusible properties and a relatively low melting point of less than about 300.degree. F. The staple fibers and ground yarns are formed of a material unaffected at the relatively low melting point of the binder strand. When a moderated amount of heat is applied to a cut pile fabric formed from such wrap yarns, the binder yarns shrink and are retractably positioned inwardly away from the face of the pile fabric and are hidden among the pile tufts and not visible.
    Type: Grant
    Filed: July 28, 1986
    Date of Patent: May 26, 1987
    Assignee: Collins & Aikman Corporation
    Inventor: Eddie W. Scott
  • Patent number: 4668553
    Abstract: A pile fabric is formed of interengaging ground yarns and cut pile tufts. The tufts are formed of wrap yarns extending upwardly from the ground yarns and forming the face of the fabric. Each of the wrap yarns comprises a body strand of untwisted staple fibers and a crimped textured binder strand which has extensible and retractable properties. In the wrap yarn, the binder strand is helically wrapped around the body strand in an axially extended and tensioned condition and is reduced in bulk compared to the condition the binder strand would assume when relaxed. When tufts formed of such wrap yarns are cut to form the face of a cut pile fabric, the binder strands retract and position themselves inwardly away from the face of the pile fabric so as to be hidden among the pile tufts and not visible. The retraction of the binder yarns and the appearance, hand and integrity of the resulting fabric can all be enhanced by various finishing processes.
    Type: Grant
    Filed: July 28, 1986
    Date of Patent: May 26, 1987
    Assignee: Collins & Aikman Corporation
    Inventors: Eddie W. Scott, Nelson E. Sweezy
  • Patent number: 4524577
    Abstract: The twisted yarn is prepared by twisting (1) a single yarn comprising a water-insoluble fiber having a degree of water swelling of at least 10 cc/g or (2) a plurality of single yarns comprising a water-insoluble fiber having a degree of water swelling of at least 10 cc/g or a plurality of yarns comprising at least 50% by weight of such single yarns and water-nonswellable yarns so that the twist constant is at least 2.5.
    Type: Grant
    Filed: December 10, 1982
    Date of Patent: June 25, 1985
    Assignee: Kao Corporation
    Inventors: Osamu Ito, Harumasa Yamasaki, Itsuo Minakata, Kazunori Nishizawa
  • Patent number: 4520623
    Abstract: An activated carbon fiber spun yarn having excellent workability and adsorptive property is disclosed. The activated carbon fiber spun yarn comprising activated carbon fibers having a specific surface area of 500 to 1,500 m.sup.2 /g, a ductility of at least 0.5%, and a tensile strength of at least 10 kg/mm.sup.2 and derived from acrylonitrile-based fibers. The spun yarn has a twist coefficient of 30 to 60.
    Type: Grant
    Filed: July 18, 1983
    Date of Patent: June 4, 1985
    Assignee: Toho Beslon Co., Ltd.
    Inventors: Hiroyasu Ogawa, Kazuo Izumi, Kenji Shimazaki
  • Patent number: 4519201
    Abstract: The present invention relates to an improved process for blending together textile like fibers exhibiting a relatively high modulus of elasticity together with textile fibers exhibiting a relatively low modulus of elasticity which blend can further be converted into a high quality blended yarn structure. When the textile fibers exhibiting the relatively high modulus of elasticity are also electrically conductive, such as e.g. metal or carbon fibers, then the resulting yarns and fabrics can be designed with a predetermined level of electrical conductivity.
    Type: Grant
    Filed: September 8, 1982
    Date of Patent: May 28, 1985
    Inventor: John J. Toon
  • Patent number: 4457345
    Abstract: A yarn is prepared from a mixture of textile staple fibers and active carbon staple fibers which consists of 5 to 75%, preferably 20 to 40%, of the latter by weight, by chopping active carbon monofilaments into staple fibers, mixing them with textile staple fibers in a liquid vehicle, separating the fibers from the liquid vehicle and spinning them to yarn which can be used in weaving fabrics of tensile strengths of as much as 2000 newtons per 5 centimeters, which in turn can be used in making filters and protective suits.
    Type: Grant
    Filed: November 15, 1982
    Date of Patent: July 3, 1984
    Inventors: Hubert von Blucher, Hasso von Blucher, Ernest de Ruiter
  • Patent number: 4454196
    Abstract: A polyester multifilament consisting essentially of a filament groups (I) and (II). The filament group (I) is composed of a polyester selected from the group consisting of polyethylene terephthalate, polytrimethylene terephthalate and polytetramethylene terephthalate, and/or a blend and/or copolymer comprising at least two members selected from the polyesters. The filament group (II) is composed of a substrate composed of a polyester selected from the group consisting of polyethylene terephthalate, polytrimethylene terephthalate and polytetramethylene terephthalate, and/or a blend and/or a copolymer comprising at least two members selected from the polyesters and at least one polymer selected from the group consisting of styrene type polymers, methacrylate type polymers and acrylate type polymers, which is added to said substrate in an amount of 0.4 to 8% by weight based on the substrate.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: June 12, 1984
    Assignee: Teijin Limited
    Inventors: Kohichi Iohara, Michikage Matsui
  • Patent number: 4433535
    Abstract: A yarn is made by carding short lengths of glass fibre and then spinning the carded fibres. Advantageously short lengths of support fibre are mixed in with the short lengths of glass fibre before carding. A reinforcing strand may be buried in the yarn during spinning or during a subsequent twisting step. The support fibre should preferably be flexible. The resulting yarn, or goods made therefrom, can be used in many applications to replace goods based on asbestos fibres or on continuous glass fibres.
    Type: Grant
    Filed: December 29, 1981
    Date of Patent: February 28, 1984
    Assignee: Valeo
    Inventors: Louis D. Darrichard, Jacques Plaisant
  • Patent number: 4384448
    Abstract: Improvements in conventional ring spinning processes of the type wherein a strand of staple fibers if drafted, twisted and collected on a ring spinning frame are obtained by the added step of subjecting the strand to the twisting action of a pneumatic false twister between the drafting and collecting steps. The added step improves performance and/or permits the process to be operated at higher front roll delivery speeds for any given spindle speed without sacrificing performance. The higher delivery speeds results in improvements in the productivity of the process and the apparent value of staple yarn produced thereby.
    Type: Grant
    Filed: November 3, 1980
    Date of Patent: May 24, 1983
    Assignee: Monsanto Company
    Inventor: Arnold E. Wilkie
  • Patent number: 4356690
    Abstract: Fasciated yarn having uniform yarn construction and high strength, comprising a staple fiber group having a special staple assortment for making such a fasciated yarn.
    Type: Grant
    Filed: March 26, 1979
    Date of Patent: November 2, 1982
    Assignee: Toray Industries, Inc.
    Inventors: Koichi Minorikawa, Shinichi Kitazawa