Abstract: A permanently flame-retardant and anti-microbial air-textured yarn is formed of a plurality of substantially longitudinally extending, permanently flame-retardant filaments defining a core, and a plurality of substantially randomly extending, permanently anti-microbial filaments disposed at least about the core, the anti-microbial filaments at least partially defining a boucle-like sheath about the core. A knit or woven fabric formed with the yarn and having at lease 5% by weight of the anti-microbial filaments is characterized by an ability to pass, both after one commercial laundering and after 100 commercial launderings, both National Fire Protection Agency vertical flame retardancy test NFPA 701-1989 and at least the 85% reduction level of gram positive and gram negative bacteria of anti-microbial test NYS 63.

Abstract: An irregularly shaped glass fiber is provided which enjoys improved resiliency, and openness in pack structures. Wool packs and other wool portions having such irregularly shaped fibers may be processed directly through needling to form a non-woven material without intervening steps such as carding or blending of fibers which accompany conventional glass fiber processing operations. In a further aspect of the invention, a non-woven material including irregularly shaped fibers in a generally continuous wool tow is produced by "unwinding" a fiberglass wool pack collected by a direct forming method. Product applications include simplified, lower cost processing, and new uses of the irregularly shaped fibers produced by rotary fiberization in filtration elements, sorbants, gaskets, packings, shingles, composite structural elements, furnishings, textiles, yarns, and blown-in insulation systems.

Abstract: A yarn/tow composed of continuous thermoplastic filaments and discontinuous structural filaments wherein the discontinuous structural filaments are intermingled with the continuous thermoplastic filaments. Groups of discontinuous structural filaments have cut ends which are staggered with those of neighboring groups to allow a continuous structural path along the yarn or tow when the thermoplastic is melted to form the matrix of a composite structure. This hybrid continuous/discontinuous (CD) yarn or tow can be "stretched" as the thermoplastic filaments are melted, allowing the structural filaments to slip relative to one another. Woven forms of this CD precursor can then be molded into complex shapes starting from simple preform shapes.

Abstract: In a yarn composed of core-sheath filaments with or without further monocomponent filaments, the core and the sheath of the core-sheath filaments are produced by extruding spinnable polymers, with at least almost all the core-sheath filaments having a complete sheath. Of all the core-sheath filaments in the yarn, the proportion of core-sheath filaments P, in %, of which each core-sheath filament has (S.+-.0.1 S) % of sheath content (based on the total volume of the particular core-sheath filament), meets the following conditions: P.ltoreq.100, S.gtoreq.0.5, and P.gtoreq.30+(0.1 S).sup.8 %. This yarn can be produced by a process wherein the core component is fed via a first spinneret plate to a second spinneret plate in a plurality of individual streams, and between the first and second spinneret plate each individual stream of core component is enveloped by the sheath component being fed onto it, and the two components are conjointly spun, drawn and wound up.

Abstract: A bicomponent, reversible crimp filament useful in textile and fabrics applications is disclosed. The filament is characterized by a total shrinkage of between about 25 percent and about 50 percent, a fiber shrinkage of between about 2 percent and about 20 percent, a crimp shrinkage of about 20 percent and about 38 percent and a basic dye level of less than about -8.

Abstract: The present invention provides improved compositions of expanded polytetrafluoroethylene (PTFE) and similar polymers and methods for forming and using such compositions. In its preferred embodiment, the present invention employs a mixture of PTFE and expandable thermoplastic microspheres. Through application of an energy source to the mixture, a coherent three dimensional expansion of PTFE can be achieved. The expanded mixture has many of the same beneficial properties of mechanically expanded PTFE and numerous properties previously unavailable with expanded PTFE products.

Abstract: A yarn, especially a sewing yarn, comprises at least two multifile yarn components. The first yarn component forms mainly the core of the yarn and the second yarn component forms mainly the jacket of the yarn. The two yarn components are intermingled with one another. The monofilaments of the second yarn component have a specific strength which amounts to between 5% and 70%, especially between 10% and 50%, of the specific strength of the monofilaments of the first yarn component.

Abstract: Bonded yarn bundle, manufacture thereof and textile sheet materials obtainable therefrom.There is described a yarn bundle having a tenacity of at least 42 cN/tex, comprising at least one twisted multifilament yarn composed of a first synthetic polymer, for example polyethylene terephthalate, whose individual filaments have become bonded together over essentially the entire thread cross-section by the melting of a second thermoplastic synthetic polymer whose melting point is at least 10.degree. C. below the melting or decomposition point of the first synthetic polymer.The yarn bundles are notable for high strength, good flexural stiffness and good hydrolysis resistance and are usable in particular for manufacturing textile sheet materials for use in hot, moist environments, in particular for use as wire cloths for papermaking machines.

Abstract: The semi-finished product according to the invention consists exclusively of liquid crystal thermoplastic polymers (LCP), whereof at least one first liquid crystal thermoplastic polymer (LCP) is in the form of fibers (18) and has a given melting point, and whereof at least one second liquid crystal thermoplastic polymer (LCP) (16) has a melting point below that of the first LCP. This semi-finished product is in particular a fabric. By simply heating under pressure at a temperature equal to the melting point of the second LCP, followed by cooling, a composite material with improved mechanical and physicochemical performance characteristics are obtained.

Abstract: The invention relates to a novel type of polyolefine yarns with good performance in the manufacture of rugs and carpets, made-up by admixing polypropylene filaments with polyethylene filaments, and by subjecting said filaments mixture to a temperature of from 125.degree. C. up to 130.degree. C., which substantially equals the melting temperature of the polyethylene filaments, whereby said polyethylene filaments become melted while the polypropylene filaments, with higher melting point, remain solid and stable, and with said melting of the polyethylene filaments constituting welding points for said polypropylene filaments, bulking and shaping the resulting yarn.

Abstract: A highly oriented, undrawn, conductive, composite filament is provided, which is white or colorless and has antistatic properties durable over a long period when clothing utilizing the fiber are actually put on and washed. The filament is a sheath-core composite filament comprising a sheath of a fiber-forming thermoplastic polymer (A) and a core of a composition (B) comprising a conductive material which comprises a conductive metal oxide and a thermoplastic polyamide, having a core resistance of not more than 9.times.10.sup.10 .OMEGA./cm.multidot.filament, the composite filament maintaining a critical elongation--an elongation reached in the course of extending a composite filament at which the core resistance exceeds 1.times.10.sup.11 .OMEGA./cm.multidot.filament at a D.C. voltage of 1 kV--of at least 5% and a shrinkage in hot water at 100.degree. C. of not higher than 20%.

Abstract: This invention relates to an antistatic mat for a vehicle, and especially relates to an antistatic mat equipped with electric discharge function against generation of static electricity for effectively preventing adhesion of dust and rubbish thereon and secondary disaster caused by electric shock. An antistatic mat according to Claim 1 is characterized in that it includes: pile including conductive fibers containing conductive components partially protruding from the surface of synthetic resin. An antistatic mat according to Claim 2 is characterized in that it includes conductive compound fibers wound around non-conductive fibers forming pile in the manner that each conductive fiber is wound around the periphery of each non-conductive fiber to form a spiral shape. An antistatic mat according to Claim 3 is characterized in that it includes conductive compound fibers mixed to the bundle of non-conductive fibers forming pile.

Abstract: An acrylic fiber tow is disclosed which comprises 1) monocomponent filaments of each of two acrylonitrile polymers differing in hydrophilic properties, 2) bicomponent filaments of both of said polymers having one interface between polymers components and 3) bicomponent filaments of both of said polymers having more than one interface between polymer components. This fiber, however, in spite of its composition of numerous filaments of differing structure provides a tow bundle having a desirable level of reversible crimp measured in a manner specific to the type of crimp designated.Also disclosed is a method for wet-spinning the novel fiber using a static mixing unit in conjunction with a spinnerette normally used for wet-spinning monocomponent filaments.

Abstract: Staple fibers having a crimp frequency in the range of 3 to 6 crimps per centimeter are mae by a process including a co-crimping step in which conductive and nonconductive filaments are crimped together.

Abstract: There is described a composite sheet includes a textile layer containing an electrically conductive fiber with an electric resistance of 10.sup.5 to 10.sup.9 ohms/cm as disposed at spaced intervals not exceeding 30 mm and a semiconductive layer with a surface resistivity of 10.sup.6 to 10.sup.10 ohms as disposed on the reverse side of the textile layer. This composite sheet releases the static electricity of the charged body on mutual contact and is therefore suitable for use as a car upholstery material and particularly as a seat covering material.

Abstract: Flat polyester yarns that provide soft pleasing fabrics that can easily be brushed (or napped) to enhance their aesthetics, on account of their unusually low tenacity, that consist essentially of cationic dyeable polyester filaments, and corresponding spin-oriented feed yarns that may be processed into such flat yarns by draw-warping.

Abstract: A superior cylindrical filter having a long filtration life is provided, which filter is obtained by using interlaced filaments comprising 20% by weight or more of hot-melt-adhesive composite filaments composed of plurality of components having a melting point difference of 20.degree. C. or more and having two or more interlaced portions per meter of which the interlacing strength is 15.times.D mg or more, wound up on a core material in a cylindrical form under a tension of 15.times.D mg or less, the contact points of the interlaced filaments being bonded by melt-adhesion of the low melting component of the composite filaments.

Abstract: An improved chenille woven or knitted fabric utilizing at least a chenille yarn composed of synthetic fibers, wherein raised fibers forming a raised fiber portion of the chenille yarn are composed of ultra-fine fibers having a fineness smaller than 0.9 denier and the rising angle .alpha. between the axis of the raised fibers and the longitudinal axis of the chenille yarn is not larger than 50.degree..This chenille woven or knitted fabric has a very smooth surface touch and a silk-like high-grade luster. Since almost no raised fine fibers are removed, this fabric is excellent in durability.

Abstract: Polyester polymer is extruded through converging capillaries at different speeds to merge and form a combined stream. The stream is cooled to form a filament, which is withdrawn at a high speed. A plurality of such filaments are combined into yarn which self-crimps upon heating. In some embodiments, the yarn has a variable denier.

Abstract: Polyester conjugate crimped yarns prepared by conjugate spinning(1) an A component substantially comprising polybutylene terephthalate and(2) a B component substantially comprising polyethylene terephthalateat a weight ratio of 30:70 to 70:30 in a side-by-side or eccentric sheath-core arrangement, rendered crimpable by false twisting to a degree of crimpability TC.sub.10 of 8% or more when subjected to a boiling water treatment under a load of 10 mg/de. The polyester conjugate crimped yarn can be obtained by subjecting the conjugate yarn to single-heater false twisting under the conditions which satisfy the following relations:TW.gtoreq.24380/.sqroot.De (i)185+50 [.eta.]B.gtoreq.T.gtoreq.150 (ii)whereTW is the number of false twists (T/m);De is the total denier of the yarn after false twisting;T is the temperature in 0.degree. C. of the false twister heater;[.eta.]B is the intrinsic viscosity of the B component.

Abstract: Two molten streams of polyester polymer are extruded at different speeds to intersect below the spinneret. The spinning speed is relatively high, and the resulting filament has shrinkage peaks and valleys along its length. When a number of such filaments are relaxed in a yarn bundle, the yarn spontaneously develops crimp.

Abstract: A textured continuous filament yarn combining a luxuriant, soft hand with improved moisture wicking for greater comfort in garments. Some filaments have a denier which varies at least 25% (preferably 300-500%), and other filaments have a spiral cross-section.

Abstract: A synthetic filament and a yarn composed thereof wherein the filament comprises at least two different incompatible synthetic linear high polymers, one being distributed as islands in the sea of the other polymer element when seen in cross-section, each island being continuous along the axis of the filament and being characterized by their uniformity in cross-sectional dimension in any cross-section of the filament.

Abstract: A boucle yarn is prepared by relaxed heat treatment of a precursor yarn prepared by combination of a low shrinkage filament or yarn or monofil at the back of the front roller of a spinning frame with a roving of high shrinkage fibers followed by twisting to a twist multiplier of 1.5 to 4.0. The shrinkage differential between the high shrinkage fibers and the low shrinkage fibers must be at least 20%.

Abstract: An antistatic filament having a polymeric sheath and a conductive polymeric core of a defined nature, the core constituting less than 10% of the cross-sectional area of the filament.

Abstract: Disclosed are an improved islands-in-a-sea type multi-core composite filament comprising at least two different polymer components and having a cross-section wherein each island is surrounded by some other islands and most of the islands have an approximately quadrilateral to hexagonal cross-section, and also a process for producing the above-said composite filament.