Abstract: A crimped multifilament composed of a thermoplastic polymer, wherein a birefringence index measured at an outer layer of a filament constituting said multifilament is larger than that of a birefringence index measured at a central portion of the filament, and said filament has a distribution in which a position having a smallest value of the birefringence index deviates from the center axis of the filament and random crimps of 10 per inch or more.A crystal growth rate measured by a wide-angle X-ray diffractometry is 0.2 or more for a polyamide crimped multifilament and 0.4 or more for a polyester crimped multifilament.A preferable method for manufacturing the crimped multifilament is that a multifilament extruded from. a spinneret (2) is applied with an aqueous liquid (5) to one side thereof up to state that a temperature of the multifilament becomes to a predetermined temperature, the obtained multifilament is drawn at the drawing ratio between 1.0 and 1.

Abstract: In a container for a roll of a light-sensitive strip material having a core on which the light-sensitive strip material is coiled to form a roll, an opening for drawing out the light-sensitive strip material and a teremp cloth provided on the above opening for shielding from light, wherein a filling layer formed of polyolefin copolymer resin usable as the adhesive layer for fixing the teremp cloth on the container body is provided at the ground fabric of the teremp cloth, and/or a multilayer coextruded film is laminated under the ground fabric of the teremp cloth, and the multilayer coextruded film has a tensile strength of more than 500 g/15 mm width and comprises an adhesive layer of an ethylene copolymer resin having a comonomer content of 5 to 36 % for fixing said teremp cloth on the container body and a thermoplastic resin base layer having a melting point of higher than the ethylene copolymer resin adhesive layer by 10.degree. C. or more and a Young's modulus of more than 15 kg/mm.sup.2.

Abstract: A fibrous thermal insulation comprising an intimate blend of A) an effective amount of non-graphitic carbonaceous fibers having an LOI value greater than 40, a percent char value greater than 65, and a thermal conductivity less than 1 BTU hr ft.sup.2 /.degree.F. for providing a synergistic improvement in fire resistance, and B) hollow thermoplastic fibers.

Abstract: Pitch-based carbon fiber having from 2 to 200 twists per 1 cm length or from 2 to 200 twists per 1 cm length and curls are provided. These fibers show superior properties as carbon fibers useful for non-woven fabrics or for fabrics.

Abstract: A refrigerant transporting hose having a laminar structure including an inner tube consisting of at least one layer, an outer tube disposed radially outwardly of and coaxially with the inner tube, and a reinforcing fiber layer interposed between the inner and outer tubes. The inner tube includes a resin layer formed of a resin composition which consists of a blend of modified polyolefin and polyamide resin, and 1-10% by weight of .epsilon.-caprolactam. A proportion by weight of the modified polyolefin to the polyamide resin is selected within a range between 40/60 and 10/90. The hose may have a sealing layer formed on the inner surface of the inner tube. The sealing layer consists of a chlorinated elastomer containing a dispersion of an acid receptive agent. Alternately, the sealing layer may be provided on the outer surface of a hose connector nipple.

Abstract: Free flowing, conformable powder-like mix of silica particles and a phase change material (p.c.m.) is disclosed. The silica particles have a critical size of about 7.times.10.sup.-3 to about 7.times.10.sup.-2 microns and the pcm must be added to the silica in an amount of 80 wt. % or less pcm per combined weight of silica and pcm. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garmets, quilts and blankets, and in cementitious compositions of the type in which it is beneficial to use a pcm material. The silica-pcm mix can also be admixed with soil to provide a soil warming effect and placed about a tree, flower, or shrub.

Abstract: A method for making a fabric coated with acrylic resin and adaptable to use as a wrap for food products such as cheese or sausage, which comprises embedding a textile material of relatively low strength, such as a knitted fabric, scrim, or lightweight nonwoven fabric, in a coating layer of acrylic resin having thermoplastic properties, and for making a food wrap by cutting a blank therefor from such coated fabric, which blank is shaped into a wrap by heat sealing; fabrics and wraps made by such a method.

Abstract: An overlay of sheet material that is impregnated with thermosetting resin--typically a fabric of a type including metallic, synthetic fiber, natural fiber and ceramic cloths impregnated with epoxy resin--is wrapped about or laid on an underlay of material that is also impregnated with thermosetting resin--typically a resin material reinforced with fibers of the graphite, glass, aramid, or ceramic types. The overlay and underlay are cured under heat and pressure in an oven at the same time, causing cohesive bonding of the resin within each. The resin exudes through the fabric overlay during curing and forms a hard transparent shell of cured resin to the composite article. The embedded sheet material selectively imparts color, pattern, texture, reflectivity, penetration resistance, tensile strength, thermal and electrical conductivity, and other visual and mechanical properties to the composite article as desired.

Abstract: A method of producing crimped tow by continuously feeding a tow against an adjustable counter pressure means; the tow is maintained at an average predetermined thickness and steam enters the chamber and is exhausted from the chamber in a manner to provide uniform heating of the tow to provide a fiber that is uniformly annealed as determined by measuring light reflectance for yarn dyed with a structural sensitive Milling Blue "B" dye or shrinkage uniformity determined by thermal analysis.

Abstract: A rubber having fiber reinforcement embedded thereon. The reinforcement comprises a cylindrically braided cords of more than four and even numbered twisted yarns. Yarns are right twist oriented and left twist oriented and they are twisted in the reverse direction in an, S-twist and a Z-twist.

Abstract: An acetate tow having crimp modulus, wherein a degree of crimping of the acetate tow at a position just downstream of a delivery roller of a filter rod making machine used to form a filter rod is 1.4 or more.When the acetate tow is bloomed in the filter rod making machine, a tendency which the acetate tow is caught on a feed roller becomes very low, and when the filter rod is formed of the acetate tow, a filter rod having a high pressure drop can be obtained.The present invention further includes a method of manufacturing the acetate tow, in which a specified acetone content is maintained in the acetate tow and a specified temperature, determined on the basis of the acetone content, is used in a process of crimping the acetate tow.

Abstract: A blend of low shrinkage polyester fibers and high shrinkage polyester fibers is described. In particular, the blend includes high shrinkage PET copolymers having boiling water shrinkages from 6 to 11 percent and low shrinkage PET copolymer fibers having a shrinkage of less than 3 percent. Textured carpets and rugs made from the blend consistently have better initial tuft end point definition and, in most cases, better bulk than corresponding polyester carpets made from conventional polyester fibers.

Abstract: A refrigerant-transport hose having an inner tube, an outer tube located radially outwardly of the inner tube, and a reinforcing fiber layer interposed between the inner and outer tubes, the reinforcing fiber layer and the inner and outer tubes providing an integral tubular body, and inner tube including a gas-impermeable resinous layer formed of a composition containing a polyamide resin produced by reaction of hexamethylene diamine and an aliphatic dicarboxylic acid having eight to sixteen carbon atoms.

Abstract: This invention relates to processes for the production of mono- and multifilaments and also staple fibers of multifilaments based on polyarylene sulfides, preferably substantially linear polyarylene sulfides and, more preferably, substantially linear poly-p-phenylene sulfide by melt spinning, multistage stretching and optionally crimping and setting.As a result of the treatment by blowing of air onto the stabilized spun filaments in the first stretching stages at temperatures .ltoreq.100.degree. C. (preferably in stretching baths, more particularly in boiling water), the chain molecules are oriented; the orientation and crystallinity required for high strengths is achieved by afterstretching (in hot air) at elevated temperature.

Abstract: Heatset, textured (e.g. stuffer box textured), continuous filament, nylon carpet yarn useful for making textured carpets is disclosed. The yarn is made from nylon 66 copolymer. Textured carpets made from the yarns of the invention have improved aesthetics and/or appearance retention characteristics as compared to textured carpets made from nylon 66 carpet yarns.

Abstract: Synthetic filaments having a trilobal or tetralobal cross-sectional shape with substantial convex curves, connected by cusps, along the contour of each lobe. The filaments are especially suitable for making carpets which exhibit low glitter, high bulk, and resistance to fibrillation.

Abstract: A process for producing a bale of crimped staple fibers includes the repeated steps of cutting continuous filament crimped nylon tow into segments, maintaining the integrity of the segments while tramping charges of the segments under pressure to form a compacted layer, holding the layer to retain layer compaction and then pressing the layers and strapping the pressed layers.

Abstract: A fibrous thermal insulation comprising an intimate blend of A) an effective amount of non-graphitic carbonaceous fibers having an LOI value greater than 40, a percent char value greater than 65, and a thermal conductivity less than 1 BTU hr ft.sup.2 /.degree.F. for providing a synergistic improvement in fire resistance, and B) hollow thermoplastic fibers.

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.

Abstract: There is provided a non-flammable expanded fiber comprising carbonaceous polymeric substantially irreversibly heat set fiber having an LOI value of greater than 40, and the fibrous structures thereof. Also, provided are stabilized expanded polymeric fibers.

Abstract: A composite member (10) features a unique ply geometry which contributes to improved bending strength. The composite is constructed of a plurality of plies, each comprising a fiber component disposed within a polymer matrix. An inner ply (16) has a fiber component (18) which has fibers which are circumferentially extending. An intermediate ply (22) has first axially extending fibers (24) which are disposed about the circumference of the composite, as well as second axial fibers (30) which are interwoven with helically oriented fibers (36) and embedded in a polymer matrix (14). An outer layer (38) is similar to the inner layer as it features circumferentially extending fibers (40) which are embedded in a polymer matrix.The composite materials may be used to manufacture a wide range of items which require light weight combined with high strength.

Abstract: A lining material for pipe lines, especially those buried in the ground and a process for providing pipe lines therewith are disclosed, which includes a flexible tubular film, a sheet covering the outer surface of the tubular film and a film capable of being split off covering the outer surface of the sheet, characterized in that the sheet includes a fabric and a mat of fibers of high tenacity impregnated with a thickened liquid thermohardenable resin to form a fabric-fiber-reinforced composite molding sheet having a sufficient length and a width greater than the inner circumferential length of a pipe line to be treated, and that both lateral end portions of the sheet are slidably overlapped with each other to form a tube around the tubular film, the outer circumferential length of the tube being shorter than the inner circumferential length of the pipe line.

Abstract: This invention relates to novel copolymers containing carbonate repeat units and ester repeat units.

Abstract: A belt strap (1) for safety belts which is to have outer surfaces of as low friction as possible so that it can run through the safety belt system with as little friction as possible. The warp threads (3), which are woven into the belt strap, have filaments (5) of at least 15 dtex, particularly 17 dtex. The warp threads (3) are, in one embodiment, untwined and tangled at certain points with compressed air, whereby the tangled points (7) can be spaced from one another by 5 to 15 cm. In another embodiment the warp threads are twined only slightly, namely with 30 to 50 twists per meter thread length.

Abstract: A composite hose comprising an inner helical core (1) made of metal, a plurality of layers of plastics material fibres and films (2, 2a, 2b, 2c) wound on the helical core (1), at least one layer of glass cloth (3) and at least one layer (4) of aluminium foil disposed adjacent one another and wound onto the layers of plastics material fibres and films (2) and an outer helical former (7) made of metallic material.In an alternative embodiment, at least one layer of ceramic fibres (5) is wound around the plastics material, which layer (5) is covered by at least one winding of a protective layer (6a; 6b).Such hoses are made by winding the layers successively one upon another on a rotating mandrel.

Abstract: A method of producing a packing product includes the steps of feeding at least one sheet of material in a first direction; cutting the at least one sheet of material into a plurality of strips; the cutting being performed by rotating two sets of alternating, overlapping cutting discs; the feeding of the at least one sheet of material being between the two sets of cutting discs; advancing each of the strips by the rotating of at least an outer surface of a corresponding one of the cutting discs as the outer surface moves in the first direction; restricting each strip from continued advancing in the first direction; and sequentially folding each of the strip means by the restricting in opposition to the advancing. There is included apparatus and means for producing the packing product.

Abstract: A lining material adapted for lining the inner surface of pipelines for transferring various kinds of fluids such as city water, sewage, city gases and petroleum, etc., characterized in that low elongation high tensile strength filament yarns are used as wefts (5), (16) forming tubular textile jackets (2), (6) laid in the lining material or as the yarns (12) forming a tubular fibrous member (13) together with a tubular textile jacket (2'). This characteristic feature provides excellent performance required for lining materials for pipelines such as enhanced earthquake resistance and shape retaining property against external pressures and limited expansion in diameter.

Abstract: An oxygen scavenger comprises an oxygen absorbent composition and an oxygen permeable film covering the oxygen absorbent composition and including an asymmetric porous membrane whose outer surface portion in the thickness direction of the asymmetric porous membrane is formed as a dense skin layer. Since the dense skin layer is very thin, the oxygen permeability to the oxygen absorbent composition through the oxygen permeable film can be maintained sufficiently high. At the same time, since the dense skin layer has a sufficiently high barrier property as well as a high oxygen permeability, contact of the substances stored in a container with the oxygen absorbent composition can be surely prevented. The substances stored in the container attached with the oxygen scavenger can be prevented from deterioration due to the oxygen present in the container by a high oxygen absorption ability of the scavenger, and maintained in a good or fresh condition for a long term.

Abstract: The present invention uses, as a base material, a multi-layer film comprising more than two layers and formed from thermoplastic resins different in melting point from one another. A sectional construction of the multi-layer film or a tape obtained from the multi-layer film is applied to a sectional construction of a fibre without modification, the multi-layer film or tape being formed into the fibre. The invention provides a composite fibre which is much more excellent as compared to a conventional heat adhesive composite fibre by melt spinning, a water-absorbing material using the composite fibre as a base material and a method for the production of the same by the stated simple means.

Abstract: A towed array streamer including a buoyant core, a data bearer layer, longitudinally positioned strain members and at least an outer jacket in which a strain member support has provided in it a series of longitudinally running grooves accommodating strain members to confine the position of the strain members in the streamer.

Abstract: The cushion material according to the invention is prepared by mixing(A) polyester fibers having a fineness of 4 to 30 denier and a cut length of 25 to 150 mm with(B) core-sheath type conjugated fibers having a fineness of 2 to 20 denier and a cut length of 25 to 76 mm in a weight ratio of 95.about.40:5.about.60, the sheath component of said conjugated fibers having a melting point lower than that of the core component of said conjugated fibers and said polyester fibers with a difference of 30.degree. C. or more. In the cushion material, cubically and continuously interconnected portions of the fibers are adhered by fusion of the sheath portion of the above core-sheath type conjugated fibers.The cushion material having a thickness of 10 cm or more and a good quality can be stably prepared by combining far-infrared ray or hot air flow heating and steaming in the heat-treatment.

Abstract: A preform assembly for use with a resin transfer molding apparatus. The preform assembly comprises an upper liner formed to the shape of a first mold half, the upper liner having a peripheral portion, a dry fabric preform, and a lower liner formed to the shape of a second mold half, the lower liner having a peripheral portion. The preform is sandwiched between the upper liner and lower liner to form the preform assembly having peripheral portions which extend beyond the preform to form a sealing area. The upper liner is sealed to the lower liner at the sealing area. The preform assembly facilitates the loading of the preform into a molding apparatus as well as facilitating the handling and storage of the preform prior to and subsequent to molding. Methods of making the preform assembly, as well as a composite article, are also disclosed.

Abstract: Fiberballs for filling uses have been prepared from mechanically-crimped fibers having both a primary crimp and a secondary crimp with specific configurations, especially amplitudes and frequencies. The fiberballs may contain a proportion of other fibers, particularly binder fibers.

Abstract: Hoses are disclosed for transporting refrigerant media and a 1,1,1,2-tetrafluoroethane gas in particular. An inner tube is formed of a rubber composition comprising a selected ethylene-propylene-diene rubber and having a specified permeation limit of the gas. Disposed around the inner tube are a reinforcing layer and then an outer cover. The resulting hose is highly impermeable to gas and to water, sufficiently resistant to heat and fully free from maintenance.

Abstract: Synthetic filaments having a trilobal or tetralobal cross-sectional shape with substantial convex curves, connected by cusps, along the contour of each lobe. The filaments are especially suitable for making carpets which exhibit low glitter, high bulk, and resistance to fibrillation.

Abstract: Batts and filled articles of polyester fiberfill of round peripheral cross-section, but containing voids arranged peripherally around an axial void, and preferably seven such voids in a hexagonal packing arrangement.

Abstract: A blend of low shrinkage polyester fibers and high shrinkage polyester fibers is described. In particular, the blend includes high shrinkage PET copolymers having boiling water shrinkages from 6 to 11 percent and low shrinkage PET copolymer fibers having a shrinkage of less than 3 percent. Saxony carpets made from the blend consistently have better initial tuft end point definition and, in most cases, better bulk than corresponding saxony polyester carpets made from conventional polyester fibers.

Abstract: A laminated rubber structure having a first layer formed of a first rubber composition including a copolymer of tetrafluoroethylene, vinylidene fluoride, and hexafluoropropylene, the copolymer having at least one peroxide-crosslinking peroxide unit each bonded to a corresponding one of at least one end thereof, and containing 10 to 50 mole % of the vinylidene fluoride; and a second layer formed of a second rubber composition which includes an acrylonitrile-butadiene rubber containing 25 to 45 weight % of acrylonitrile, and a bifunctional crosslinking aid, the second layer contacting the first layer, the first and second layers being chemically bonded to each other by crosslinking caused between the copolymer and the acrylonitrile-butadiene rubber owing to the peroxide-crosslinking unit.

Abstract: A refrigerant transporting hose including a polyamide resin innermost layer, at least one intermediate rubber layer positioned radially outwardly of the innermost layer, a reinforcing fiber layer positioned radially outwardly of the intermediate rubber layer or layers, an outer tube which is positioned radially outwardly of the fiber layer and has at least one layer including an outermost layer, and at least one phenolic resin layer formed of a phenolic resin and having a total thickness within a range of 5-100 .mu.m. Each phenolic resin layer is provided at a corresponding one of interfaces between adjacent layers which are selected from the innermost layer, the intermediate layer or layers, the fiber layer and the layer or layers of the outer tube.

Abstract: A process for producing a copolyester by copolymerizing the monomers from the ester interchange of a lower dialkyl ester of terephthalic acid and glycol and the direct esterification of a dicarboxylic acid and glycol using a novel catalyst system. The novel catalyst composition includes from about 20 ppm to about 150 ppm manganese; from about 50 ppm to about 350 ppm lithium; preferably from about 10 ppm to about 70 ppm cobalt; and from about 200 ppm to about 400 ppm antimony, all amounts being based upon the expected yield of the copolyester.

Abstract: A reinforcement member for a plastic laminate structure consisting of at least two laminate layers bonded to one another, the member having a synthetic body defining a length axis X, a breadth axis Y, and a thickness axis Z, formed of a synthetic plastic material, the length and breadth axes X and Y lying in a first plane, and the thickness axis Z lying in a second plane normal to the first plane, a plurality of first reinforcement fibres lying parallel to the first plane, and, a plurality of second recruitment fibres lying parallel to the second plane.

Abstract: Composite laminates are disclosed which are designed to exhibit superior resistance to oil and to heat and which are comprised essentially of a rubbery layer and a fibrous layer bonded thereover. The rubber layer is formed from a rubber composition made up of highly hydrogenated acrylonitrile-butadiene rubber, an organic peroxide curing agent and magnesium oxide, and the fibrous layer is formed from an organic fiber treated with a dip coating of a specified composition. Also disclosed is a composite hose in which the rubbery layer is utilized as an inner tube and the fibrous layer as a reinforcement.

Abstract: An improved thermoformable composite sheet comprises a layer of thermoplastic polymer and a lightweight stitchbonded nonwoven elastic fabric having a conformability at 180.degree. C. in the range of 4 to 9. The sheet provides articles thermoformed therefrom with improved wall thickness uniformity.

Abstract: The present invention uses, as a base material, a multi-layer film comprising more than two layers and formed from thermoplastic resins different in melting point from one another. A sectional construction of the multi-layer film or a tape obtained from the multi-layer film is applied to a sectional construction of a fibre without modification, the multi-layer film or tape being formed into the fibre. The invention provides a composite fibre which is much more excellent as compared to a conventional heat adhesive composite fibre by melt spinning, a water-absorbing material using the composite fibre as a base material and a method for the production of the same by the stated simple means.

Abstract: Composite laminates are disclosed which are designed to exhibit superior resistance to oil and to heat and which are comprised essentially of two different rubbery layers and a fibrous layer interposed therebetween. One rubber layer is formed from a rubber composition made up of highly hydrogenated acrylonitrile-butadiene rubber, an organic peroxide curing agent and magnesium oxide, and the other from a rubber composition of a rubber other than chlosulfonated polyethylene rubber. The fibrous layer is formed from an organic fiber treated with a dip coating of a specified composition. Also disclosed is a composite hose in which the rubbery layers and fibrous layer are assembled.

Abstract: Composite product of adjacent interconnected layers of heat shrinkable fibers, made by heat shrink processing of interconnected such layers of differential shrinkage properties.

Abstract: A take-up liner for uncured rubber members is a band-like laminate of inextensible reinforcing cloth, flexible foamed layer arranged thereon, extensible cloth arranged thereon and sheet-like elastomer layer adhered thereto and has a helical formed shape.

Abstract: A composite member features a unique ply geometry which contributes to improved bending strength. The composite is constructed of a plurality of plies, each comprising a fiber component disposed within a polymer matrix. An inner ply has a fiber component which has fibers which are circumferentially extending. An intermedaite ply has first axially extending fibers which are disposed about the circumference of the composite, as well as second axial fibers which are interwoven with helically oriented fibers and embedded in a polymer matrix. An outer layer is similar to the inner layer as it features circumferentially extending fibers which are embedded in a polymer matrix.The composite materials may be used to manufacture a wide range of items which require light weight combined with high strength.

Abstract: A flexible and resilient, nonwoven, surface treating article formed of entangled synthetic fibers bonded together at points where they contact one another by a binder resin comprising plasticized vinyl resin and polymerized amine-formaldehyde derivative.

Abstract: Polyester filaments of 0.5-2 denier per filament from ethylene terephthalate polymers modified both by polyethylene oxide and by tetraethyl silicate to give polymers of commercial spinning viscosities, and textile fibers and fabrics having greatly improved dye rates, good color stability to standard lightfastness and wash cycles and good pilling, when compared to unmodified polyester and polyester/cotton blend fabrics.