Abstract: Continuous and/or discontinuous three-component fibers of the “sheath-core” type, provided with an external structure of the annular sheath type, made from polyolefin or co-polyester polymer material and an inner core or nucleus constituted of two different polymer materials such as, for instance, polyolefin resins and polyester resins, in suitable amounts. Process for the preparation of said three-component fibers and utilization thereof in the sector of civil and industrial engineering for making also short-cut multi-use fibers or “fiber-fill” for cotton-wool, and for use in paper-making or for realization of non-woven fabric to be used, for instance, in the health sector.

Abstract: Dyeable and dyed filaments have a core and a sheath which entirely surrounds the core. The core is formed of a core polymer which is susceptible to dyeing by a dye bath chemical, while the sheath is formed of a sheath polymer which is resistant to dyeing by the dye bath chemical. When the filament is brought into contact with a dye bath containing the dye chemical, the dye chemical in the dye bath will physically diffuse or migrate through the sheath polymer to cause the core polymer to be dyed a color of the dye bath chemical, while the sheath polymer is substantially undyed thereby.

Abstract: The present invention provides a process for producing yarn having reduced heatset shrinkage. Preferably, the fibers used in making the yarn are bicomponent fibers. The present invention also provides a process for producing yarn having reduced heatset shrinkage at reduced heat temperatures.

Abstract: A continuous fiber nonwoven comprising composite continuous fibers having the spiral crimps obtained by compositely spinning two thermoplastic resins having the difference in the melting points of 15° C. or more is provided, and it is characterized in that the contact points of the fibers are adhered one another by fusing of the thermoplastic resin having a low melting point and located on the outside of the spiral crimps.

Abstract: Luminescent fiber comprising at least one fiber-forming material with at least one inorganic luminophor pigment dispersed therein, wherein the inorganic luminophor pigment has an average particle size of 1 to 30 &mgr;m.

Abstract: A texturized, combined polyester multifilament yarn formed from two types of polyester multifilaments FYA and FYB different in polymer chemical composition from each other and appropriately intermingled with each other, in which yarn, the multifilaments FYB have an average filament length in straightened form of 8 to 40% longer than that of the multifilaments FYA, the coefficient of variation (CVA) of the filament length of FYA is 3% or less, and coefficient of variation (CVB−A) in difference between the individual filament lengths of the FYB and the average filament length of the FYA is 10 to 20%. The yarn exhibits a high bulkiness and a large filament yarn difference and is free from slippage between the sheath FYB layer and the core FYA portion.

Abstract: A positive variable resistive yarn having a core, a sheath, and an insulator. The sheath includes distinct electrical conductors intermixed within a thermal expansive low conductive matrix. As the temperature of the yarn increases, the resistance of the sheath increases.

Abstract: Disclosed herein is a polyolefin splittable conjugate fiber comprising at least two components of polyolefin resins (including polystyrene resins) and having a cross sectional structure with each of the components arranged alternately, wherein at least one of the component resins contains 1-30% by weight of an ethylene-vinyl alcohol copolymer whose saponification degree is 95% or more. Using the splittable conjugate fiber of the invention, a fiber structure having a fine and even surface can be provided.

Abstract: A nonwoven fabric prepared from fibers which are not substantially fibrillated and have a diameter of less than 20 &mgr;m, by fusing a fiber web comprising fine fibers having a diameter of 4 &mgr;m or less, and adhesive fibers having a diameter ranging from 8 &mgr;m to less than 20 &mgr;m, wherein a maximum pore size in the nonwoven fabric is not more than twice a mean flow pore size of the nonwoven fabric is disclosed.

Abstract: Splittable multicomponent fibers which include polymer segments of different polymeric compositions, in which at least one segment partially overlaps an adjacent segment at the surface of the fiber so as to partially occlude or encapsulate the adjacent segment. The multicomponent fibers of the present invention may be mechanically split into microfilaments formed entirely of the respective components. The fibers of the present invention may be used in a variety of textile applications.

Abstract: Multicomponent filaments and methods for their manufacture are disclose, said filaments having a plurality of substantially geometrically-shaped islands formed of a first polymeric material with the islands being surrounded by a sea of a second polymeric material, said sea material having a circular cross-section and forming a center between the islands, from which radiates via a plurality of spokes which connect the center to the sheath, surrounding the islands.

Abstract: An absorbent fiber is constructed to include a hydrophobic exterior and a hydrophilic interior for use in various absorbent constructions as an absorbent, capture and entrain liquids and attendant odors.

Abstract: A molding material comprises at least the following components A, B and C, with the component C arranged to contact a composite comprising the components A plus B. The components are elongated members identified as: A A continuous reinforcing fiber bundle, B A thermoplastic polymer or oligomer having a weight average molecular weight of 200 to 50,000 and a melt viscosity lower than that of the component C, and C A thermoplastic resin having a weight average molecular weight of 10,000 or more.

Abstract: A protective yarn having a single fiberglass core fiber and one or more cover members is disclosed. At least one of the cover members are fibers selected from the group consisting of aramid fiber, ultrahigh molecular weight polyolefin fiber, polyester, nylon and polyacrylic fibers. To prevent glass fragment breakout, the cover members are wrapped, wound or twisted around the core in a manner which permits successive layers to be wrapped, wound or twisted around the core in an opposite direction from the cover member immediately below. In a preferred embodiment, one of the cover members is a substantially non-slippery fiber. The non-slippery fiber is selected from the group consisting of polyester, nylon and cotton. The construction and composition of the invented protective yarn provides a low cost component for making protective gloves and other protective garments capable of providing a user substantial cut protection while affording the user significant freedom of movement.

Abstract: Disclosed are melt processable multicomponent fibers in which at least one component includes a polyacrylonitrile polymer and at least one component includes a polyolefin polymer. The melt processable multicomponent fibers of the present invention may be mechanically split into microfilaments formed entirely of the respective components. The fibers of the present invention may be used in a variety of textile applications, including in electret filter media.

Abstract: A spontaneously degradable fiber excellent in bulkiness, softness, stretchability and feeling, which comprises (A) a low heat-shrinkable fiber component comprising a high crystalline aliphatic polyester and (B) a high heat-shrinkable fiber component comprising an aliphatic polyester, e.g., a low crystalline or non-crystalline aliphatic polyester, and a block copolymer or a mixture the main component of which is an aliphatic polyester and which comprises a high-melting component and a low-melting component. Further, fibers excellent in self-crimpability or self-adhesion property and dividable fibers are obtained by suitably combining the fiber components (A) and (B) to form conjugated fibers or composite yarns.

Abstract: Disclosed are multicomponent fibers wherein at least one component comprises a conventional, non-biodegradable synthetic polymer forming the exposed surface of the multicomponent fiber, thereby permitting thermal bonding of the multicomponent fiber to other fibers. The fibers also include at least one biodegradable component. The multicomponent fibers are useful in the manufacture of nonwoven structures, and in particular nonwoven structures used as a component in disposable absorbent products.

Abstract: An elongated fibrous insulation blanket is pre-cut for custom fitting the insulation blanket into wall, floor, ceiling and roof cavities of different widths formed by the framework of a building. The blanket has one or more cuts extending for the length of the blanket which separate the blanket into two or more longitudinally extending sections. Adjacent sections of the blanket are joined together along the cut(s) by separable connectors which hold together the sections of the blanket for handling, but are separable by hand along the cut(s) so that the blanket can be handled as a unit for insulating a cavity having a predetermined width or easily separated by hand into two or more sections at a cut for insulating a cavity having a lesser width.

Abstract: An article of clothing has a clothing part adapted to surround and cover a user's body, and a layer of a polymeric adsorbing material applied on the clothing part and formed so as to retain at least some toxic components of a poison gas so as to prevent penetration of the some toxic components to a user's body.

Abstract: A self-coating stabilizing yarn for use with conventional effect yarns in the construction of outdoor fabrics. The self-coating yarn includes a low melt constituent and a high melt constituent. After being woven with the effect yarns and exposed to a preselected heating temperature, the low melt constituent melts, flows through the fibers or filaments of the stabilizing yarns and onto the adjacent effect yarn, thus forming bonds and stabilizing and strengthening both the stabilizing yarns, the effect yarns, and the resulting fabric.

Abstract: A joining type composite molding is disclosed, containing an internal component X and an external component Y, wherein the internal component X is formed from a first resin (H); the external component Y is formed from a second resin (L) compounded with at least one functional component (A) selected from the group consisting of a catechin, a saponin, a tea-leaf powder, a tea-leaf extract and tannin (tannic acid), and a ceramics component (C); and the first resin (H) and the second resin (L) are resins falling into different categories respectively, or a resin of the same category of a non-polyolefinic resin.

Abstract: A biodegradable complex fiber which retains excellent biodegradability and hydrolyzability and has high strength and high melting temperature suitable for practical use and a method for producing the biodegradable complex fiber are provided. The biodegradable complex fiber comprises at least one polymer material selected from the group consisting of a polyglycolic acid, a poly(glycolic acid-co-lactic acid) and polylactic acid as a core component or as a shell component and a polymer material of poly(3-hydroxybutyric acid) groups or a polymer material of an aliphatic polyester consisting of a dibasic acid and a diol as a shell component or as a core component. The method comprises producing the biodegradable complex fiber by melt spinning.

Abstract: The invention is aimed to provide a core-sheath type composite filament, in which a functional component is hardly lost due to volatilization during the melt forming; bleeding of the internally added functional component is effectively inhibited; the internally added functional component does not adversely affect spinning properties, stretching properties, strength and dimensional stability; the use of the functional component can be greatly reduced, leading to a reduction of production cost; superior functionalities of deodorizing properties and antimicrobial properties can be exhibited to a maximum extent; even when contacting with water, the functionalities can be kept over a long time; and the composite filament is highly safe to a human body. The invention is also aimed to provide a process for the production of the core-sheath type composite filament as well as a heat fused article obtained from the composite filament.

Abstract: An electrically-conductive composite fiber composed of an electrically-conductive polyamide layer (A) containing 15-50 wt % of electrically-conductive carbon black and which is three or more times exposed at the fiber surface and a protective polyamide layer (B) which covers no less than 60% of the periphery of the fiber cross section and accounts for 50-97 wt % of the total fiber weight, does not exhibit component separation during spinning, retains its good initial conductive performance for a long period of time, and exhibits good color fastness.

Abstract: Spunbond multicomponent filaments and nonwoven webs made from the filaments are disclosed. In accordance with the present invention, the multicomponent filaments contain a crimp enhancement additive. Specifically, the crimp enhancement additive-is added to the polymeric component that has the slower solidification rate. The additive enhances crimp, allows for highly crimped filaments to be made at low fiber linear densities, improves the integrity of unbonded webs made from the filaments, and produces webs with improved stretch and cloth-like properties. The additive incorporated into the filaments is a random copolymer of butylene and propylene.

Abstract: The invention is directed to a split conjugated fiber.

Abstract: Provided is a fire resistant corespun yarn. The yarn includes a core of high temperature resistant continuous inorganic filaments; a first sheath of staple fibers surrounding the core, wherein the staple fibers comprise fibers of at least one fire resistant material selected from the group consisting of meta-aramids, para-aramids, fluoropolymers and copolymers, chloropolymers and copolymers, polybenzimidazole, polyimides, polyamideimides, partially oxidized polyacrylonitriles, novoloids, poly (p-phenylene benzobisoxazoles), poly (p-phenylene benzothiazoles), polyphenylene sulfides, flame retardant viscose rayons, polyvinyl chloride homopolymers and copolymers, polyetheretherketones, polyketones, polyetherimides, polylactides, and combinations thereof; and a second sheath of staple fibers surrounding the first corespun yarn. This yarn may be woven and knit in fine, non-plied or plied form and extends the range of fineness of fabrics below heretofore achievable limits.

Abstract: A thermoplastic polymer monofilament oriented from 3.0-6.0 times its original length having a diameter of 125-600 microns and containing 0.2-5.0% by weight, based on the weight of the monofilament, of glitter particles or film particles having a particle size of 50-400 microns in its longest diameter, a thickness of 2-50 microns and having a diameter to thickness ratio of at least 2 to 1 and wherein the longest diameter of the particle is not greater than 80% of the diameter of the monofilament and that provide the monofilament with an attractive appearance. A core sheath monofilament is also part of this invention wherein the core is a thermoplastic polymer monofilament having a sheath of the same or different thermoplastic polymer containing the above described particles. These monofilaments are particularly useful in toothbrushes and cosmetic brushes.

Abstract: Bicomponent fibers of isotactic polypropylene and syndiotactic polypropylene, methods of making such fibers and products made thereof.

Abstract: This invention relates to a polyethylene composite fiber comprising two kinds of polyethylene resin components having different melting points and a non-woven fabric using the same, wherein the low melting component (A) comprises a polyethylene (a) polymerized with a metallocene catalyst, and having a density of 0.850 to 0.930 g/cm3 and a Q value (number average molecular weight/weigh average molecular weight) of 3.0 or less, and the high melting component (B) is a polyethylene (b) having a density of 0.940 g/cm3 or more, and preferably analysis of the fiber using a differential scanning calorimeter (DSC) shows specified thermal property. The fiber of this invention can be easily processed into a non-woven fabric at a wide range processing temperature, and suitably used for medical materials such as being disinfected under radiation.

Abstract: Provided is a glass fiber prepared by combining two glasses, preferably at least one of which is biosoluble, in a core/sheath arrangement. Such an arrangement can provide fibers potentially stronger than those of single glasses, while also having a permanent twist or curl to impart improved loft and recovery to blankets or mats comprised of them. Preferably, the core is offset from the center of the fiber. In one embodiment, the glass fibers of the present invention comprise a core and a sheath, where the core glass of the structure contracts as it cools to a greater extent than the sheath glass of the structure. Benefits are achieved in this manner, preferably with regard to biosoluble fibers.

Abstract: A bristle comprises a core of a comparatively rigid, bending-elastic plastics material and at least one layer of a rubber-like plastics material, which is profiled by stamping or embossing against the core. To said layer can be applied a further film-like coating smoothing the profiling. Such a bristle is produced by the co-extrusion of the core and the rubber-like layer and the subsequent stamping thereof against the core. The film-like coating is applied following stamping.

Abstract: Multicomponent superabsorbent fibers are disclosed. The multicomponent fibers comprise at least one acidic water-absorbing resin and at least one basic water-absorbing resin. Each fiber contains at least one microdomain of the acidic resin in contact with, or in close proximity to, at least one microdomain of the basic resin. Blends of multicomponent superabsorbent fibers with particles of a second water-absorbing resin also are disclosed. Articles containing the multicomponent superabsorbent fibers also are disclosed.

Abstract: The carbon fiber precursor fiber bundle of the present invention is an acrylonitrile-based fiber bundle wherein the ratio of the length and width of the fiber cross section of a monofilament (length/width) is 1.05 to 1.6, and the amount of Si measured by ICP (Inductively Coupled Plasma) atomic emission spectrometry is in the range of 500 to 4,000 ppm. This type of carbon fiber precursor fiber bundle has a high compactness, and the carbonizing processing ability is good. Furthermore, for the carbon fiber bundle which is to obtained hereafter, the resin impregnating ability and tow spreading ability are good, the strength increases, and it has bulkiness. Furthermore, the carbon fiber precursor fiber bundle of the present invention is an acrylonitrile-based fiber bundle wherein the liquid content ratio HW is 40 wt. % or more and less than 60 wt. %.

Abstract: A process for combining dyed or melt pigmented textile denier accent yarns in small yarn sizes, into a small building block carpet denier bundle to achieve a face yarn bundle having a wide range of special color effects and appearance, not attainable by manufacture of multi-colored carpets from carpet denier fibers alone. The carpet denier singles yarns are drawn, textured and air-jet entangled. At least one textile denier singles yarns, which is preferably a yarn having some degree of orientation, is then entangled with the carpet denier singles yarn, and the bundle is then wound up. The final yarn bundle may contain one or more fiber types, as well as at least one anti-static filament. The two types of singles yarn, i.e., the carpet denier and textile denier types, optionally have the same or different fiber cross-sections.

Abstract: The conjugate fiber nonwoven fabric of the present invention comprises conjugate fibers, preferably core-sheath-type or side-by-side-type conjugate fibers, composed of a polyethylene-based resin (A) having a higher melting point in the range of 120 to 135° C. and a lower melting point in the range of 90 to 125° C., which is lower than the above higher melting point at least by 5° C., and a high-melting point resin (B) whose melting point is higher than that of the above polyethylene-based resin (A) by 10° C. or more, the component ratio by weight of the polyethylene-based resin (A) to the high-melting point resin (B) (A/B) being in the range of 50/50 to 10/90, and the polyethylene-based resin (A) forming at least part of the surface of the fiber longitudinally continuously. This conjugate fiber nonwoven fabric has an excellent softness and a high strength, and it is suitably used as a nonwoven fabric for sanitary materials.

Abstract: Highly crimped, fully drawn bicomponent fibers, prepared by melt-spinning, followed by gas-flow quenching, heat treatment and high speed windup, are provided, as are fine-decitex and highly uniform polyester bicomponent fibers.

Abstract: The present invention provides a process for producing yarn having reduced heatset shrinkage. Preferably, the fibers used in making the yarn are bicomponent fibers. The present invention also provides a process for producing yarn having reduced heatset shrinkage at reduced heat temperatures.

Abstract: Multicomponent superabsorbent fibers are disclosed. The multicomponent fibers comprise at least one acidic water-absorbing resin and at least one basic water-absorbing resin. Each fiber contains at least one microdomain of the acidic resin in contact with, or in close proximity to, at least one microdomain of the basic resin. Blends of multicomponent superabsorbent fibers with particles of a second water-absorbing resin also are disclosed. Articles containing the multicomponent superabsorbent fibers also are disclosed.

Abstract: A self-coating stabilizing yarn for use with conventional effect yarns in the construction of outdoor fabrics. The self-coating yarn includes a low melt constituent and a high melt constituent. After being woven with the effect yarns and exposed to a pre-selected heating temperature, the low melt constituent melts, flows through the fibers or filaments of the stabilizing yarns and onto the adjacent effect yarn, thus forming bonds and stabilizing and strengthening both the stabilizing yarns, the effect yarns, and the resulting fabric.

Abstract: A fiber structure with a cross section having x-axis and y-axis directions includes an alternate lamination including a first portion having a refractive index na and a thickness da and a second portion adjacent to the first portion and having a refractive index nb and a thickness db, wherein when 1.0≦na<1.8, 1.3≦nb≦1.8, and 1.01≦nb/na≦1.80, a primary peak wavelength &lgr;1 which is equal to 2(nada+nbdb) is given by &lgr;1≧0.78 or 1.6 (&mgr;m).

Abstract: Composite crimped yarn comprising 50-90 wt. % of cellulose filaments and synthetic fiber filaments and having a crimp elongation percentage of 0.1-4.0%; and a weft knitted fabric comprising the composite crimped yarns. A weft knitted fabric comprising the composite crimped yarns does not substantially have weft bar has a high-quality appearance, a glossiness and hand touchness of the cellulose filaments, and excellent shrinkage proofing properties and setting properties, so that this weft knitted fabric can be applied to clothing goods, such as inner wear, sports wear and outer wear which are required to have excellent, a wet strength, dimensional stability and a high quality of knitted fabric.

Abstract: This invention relates to nonwoven fabrics with advantageous characteristics and the method to produce these fabrics. Advantageously, the fabrics of the subject invention have increased thickness (loft) compared to conventional nonwoven fabrics and have high air permeability and open space while maintaining softness and strength at the same basis weight.

Abstract: Disclosed is a method of copolymerizing polyethylene glycol (PEG) and branching agent into polyethylene terephthalate (PET) to achieve a polyethylene glycol-modified polyester composition that can be spun into filaments. Fabrics made from fibers formed from the copolyester composition possess wicking, drying, stretching, abrasion-resistance, flame-retardancy, static-dissipation, dyeability, and tactility properties that are superior to those of fabrics formed from conventional polyethylene terephthalate fibers of the same yarn and fabric construction. Also disclosed are polyethylene glycol modified copolyester compositions, fibers, yarns, and fabrics.

Abstract: A spontaneously degradable fiber excellent in bulkiness, softness, stretchability and feeling, which comprises (A) a low heat-shrinkable fiber component comprising a high crystalline aliphatic polyester and (B) a high heat-shrinkable fiber component comprising an aliphatic polyester, e.g., a low crystalline or non-crystalline aliphatic polyester, and a block copolymer or a mixture the main component of which is an aliphatic polyester and which comprises a high-melting component and a low-melting component. Further, fibers excellent in self-crimpability or self-adhesion property and dividable fibers are obtained by suitably combining the fiber components (A) and (B) to form conjugated fibers or composite yarns.

Abstract: The invention is directed to a sheath core fiber having a sheath of E-CTFE fluoropolymers.

Abstract: A rebar forming apparatus includes a malleable material supply station for continuously supplying a malleable planar material and a malleable material forming station for forming the malleable material into first and second corresponding shell portions and related rebar products. The apparatus also includes a core pultrusion station and a cladding forming station for respectively forming core and cladding layers. A shell forming station is positioned downstream of the core and cladding forming stations which unites the first and second shell portions to form an outer shell with the core and cladding layers contained therein. The rebar product includes shell portions which are matably configured to form a disposable outer shell over the core and cladding layers. Related reinforcing composite product forming methods also include the use of a removable outer shell.

Abstract: An electrically conductive fabric plated with a metal is disclosed wherein a percent fabric surface occupancy of warp as a constituent of the fabric is 90% to 110% and that of weft is 40% to 80%. The electrically conductive fabric is superior in all of resin back leak preventing property, flexibility yarn fray preventing property, electrical conductivity and electromagnetic wave shieldability.

Abstract: A halogen-free fire retarding plastic coating composition, includes a binding fraction that has a limited oxygen index (LOI) of at least 25% and an intumescent agent that has a thermodegradable strong acid compound and a polyhydric carbon compound, with a weight ratio of the strong acid compound to the polyhydric compound of between 1.5 and 2.

Abstract: A soft stretch yarn substantially comprising polyester fibers has a stress, at 50% yarn stretch, of no more than 30×10−3 cN/dtex and, at the same time, a percentage recovery of at least 60%. Preferably, the Uster unevenness is no more than 2.0% and the crimp diameter is no more than 250 &mgr;m. This soft stretch yarn can be produced by spinning yarn of conjugate fibers comprising two types of polyester in which one component is PTT at a take-up velocity of at least 1200 m/min, drawing at a drawing temperature of 50 to 80° C. at a draw ratio such that the drawn yarn tensile elongation is 20 to 45%, and then heat setting.