Abstract: A method for manufacturing a sewing thread comprising the following steps:drawing an undrawn polyester multifilament yarn;preliminarily heat treating the drawn yarn at an effective heat treating temperature before false twisting;then, false twisting the heat treated synthetic multifilament yarn at a temperature of at least 150.degree. C.subjecting the false twisted yarn to a fluid jet treatment under the slackened condition so as to intermittently interlace in a lengthwise direction constituent filaments of the yarn and so as to form protruded portions protruding from the surface of the yarn; andpost-heat treating the interlaced yarn at an effective heat treating temperature being higher than the heat treating temperature of the false twisting.By this method, a thread suitable for sewing can be obtained.

Abstract: A boucle yarn is produced by entangling a drawn core yarn and an air textured, drawn effect yarn. The air textured, drawn effect yarn provides a plurality of randomly spaced curls or loops around the core yarn to produce the boucle yarn appearance. A number of the random curls or loops are embedded in the core yarn during the entangling process.

Abstract: A method and apparatus is disclsoed for producing a synthetic multifilament yarn having enhanced bulk and hand characteristics, and which is capable of high production rates. Specifically, the invention involves advancing each of at least two continuous multifilament yarn components along respective paths of travel, with a first component being advanced at a higher speed than that of a second component. Also, the second slower yarn component is guided through a liquid bath to moisten the same, while the first faster yarn component is advanced along an essentially linear path of travel and free of contact with the liquid bath, so that the degree of tension in the faster yarn component is minimized upstream of the air jet nozzle, to thereby permit full development of the loops, coils, bows or the like in the filaments thereof in the air jet nozzle.

Abstract: A method of and apparatus for manufacturing a textured yarn. The method comprises introducing plural yarns simultaneously in a state out of contact with each other into a belt type false twister including two crossing endless belts travelling in directions from each other and then exerting a compressed fluid on the plural yarns to partially intertwine the yarns. The intertwined yarns are wound up as a single textured yarn.

Abstract: A method for manufacturing a sewing thread comprising the following steps:drawing an undrawn polyester multifilament yarn;preliminarily heat treating the drawn yarn at an effective heat treating temperature before false twisting;then, false twisting the heat treated synthetic multifilament yarn at a temperature of at least 150.degree. C.;subjecting the false twisted yarn to a fluid jet treatment under the slackened condition so as to intermittently interlace in a lengthwise direction constituent filaments of the yarn and so as to form protruded portions protruding from the surface of the yarn; andpost-heat treating the interlaced yarn at an effective heat treating temperature being higher than the heat treating temperature of the false twisting.By this method, a thread suitable for sewing can be obtained.

Abstract: A method for manufacturing a sewing thread comprising the following steps:drawing an undrawn polyester multifilament yarn;preliminarily heat treating the drawn yarn at an effective heat treating temperature before false twisting;then, false twisting the heat treated synthetic multifilament yarn at a temperature of at least 150.degree. C.;subjecting the false twisted yarn to a fluid jet treatment under the slackened condition so as to intermittently interlace in a lengthwise direction constituent filaments of the yarn and so as to form protruded portions protruding from the surface of the yarn; andpost-heat treating the interlaced yarn at an effective heat treating temperature being higher than the heat treating temperature of the false twisting.By this method, a thread suitable for sewing can be obtained.

Abstract: Method to produce an entangled yarn product by air entangling a drawn core yarn and a drawn effect yarn. The effect yarn draw ratio is higher than the core yarn draw ratio which results in a composite yarn in which the birefringence of the core yarn is greater than that of the effect yarn.

Abstract: A bulky, tangled, twisted singles yarn is provided having good bulk and aesthetics. The yarn also has exceptional column strength and resistance of bending and untwisting. The yarn is particularly useful as a sweater yarn or half-hose yarn. The yarn is produced by passing twisted singles yarn having latent bulk through a chamber wherein the yarn is tangled and heated by means of a heated fluid such as superheated steam.

Abstract: A bulky, heatset, tangled, twisted singles carpet yarn is provided having exceptional column strength and resistance to bending and untwisting. Cut pile produced therefrom has excellent tuft rigidity and endpoint definition. The yarn is produced by passing a bulked, twisted singles yarn through a chamber wherein the yarn is tangled and heatset with a heated fluid such as steam.

Abstract: A bulky textured multifilament yarn comprises sections of interlaced individual filaments and sections of non-interlaced individual filaments, wherein the interlaced and non-interlaced sections are formed alternately along the lengthwise direction of the yarn, the filaments in any predetermined length of the yarn are substantially identical in length, and some portions of the individual filaments protrude out from the axis of the yarn. The yarn is made by slackening a multifilament yarn treated by a false twisting operation, and then by interlacing the slackened multifilament yarn by means of a fluid jet stream while taking up the multifilament yarn.

Abstract: Method to provide a novel air textured yarn by combining a cold drawn core yarn and a false twisted effect yarn in a fluid tangling zone.

Abstract: A bulky continuous filament yarn, in which continuous filament core yarns of polymeric material are substantially straight and free from loops and comprise from about 65 to about 93 percent of the total filaments by weight while the remainder of the total filaments are continuous filament effect yarns having a denier per filament of up to 5.0 that are inserted between the filaments of the core yarn and protrude from the surface of the core yarn in a mixture of crunodal and arch-like loops, is made by feeding a larger denier yarn at low overfeed and a much smaller denier yarn at low to moderate overfeed through a jet supplied with ambient air.

Abstract: Spun yarn-like textured polyester yarns comprised of two types of polyester multifilament component yarns and having broken filaments, in which textured yarns there is a difference in length between the component yarns, whereby high bulkiness is imparted thereto. The individual filaments of one of the component yarns have a fineness less than those of the other component yarn. The spun yarn-like textured yarns have satisfactory pilling resistance and frosting resistance.The spun yarn-like high bulky textured yarns can be produced by a process comprising doubling two types of undrawn polyester multifilament yarns having different properties through an intertwisting regulative device and simultaneously draw-texturing the doubled undrawn yarns.

Abstract: A coherent, bulked, continuous-filament, heather-dyeable yarn having a more natural, spun, wool-like appearance in carpets when dyed is produced by overfeeding lighter dyeing filaments to a greater degree than the darker dyeing ones through a turbulent fluid-jet intermingling zone.

Abstract: Spun yarn-like high bulky textured polyester yarns comprised of two types of polyester multifilament component yarns A and B and having broken filaments, in which textured yarns there is a difference in length between the component yarns A and B, whereby very high bulkiness is imparted thereto. The individual filaments of the component yarn A have a fineness and an intrinsic viscosity less than those of the component yarns B. The spun yarn-like high bulky textured yarns have satisfactory pilling resistance and frosting resistance.The spun yarn-like high bulky textured yarns can be produced by a process comprising doubling two types of undrawn polyester multifilament yarns having different properties through an intertwisting regulative device and simultaneously draw-texturing the doubled undrawn yarns.

Abstract: A polyester yarn composed of a plurality of individual fibrous materials such as endless filaments or fibers. Each of these fibrous material is provided with cross-sectional thicker portions, thinner cross sectional portions and intermediate thickness-size portions randomly distributed along the axial direction thereof in a particular condition of distribution of cross-sections of these fibrous material. The above-mentioned polyester yarn involved a textured yarn applied to a drawn polyester multifilament yarn having the above-mentioned basic condition. To produce the polyester yarn according to the present invention, it is the basic condition that the undrawn polyester multifilament yarn should be drawn under a condition of a drawing ratio below a natural draw ratio of undrawn filaments of said undrawn multifilament yarn and a drawing temperature above a crystallizing initiating temperature of said undrawn filaments.

Abstract: A continuous process is disclosed for producing a heather yarn from a continuous filament polyester feed yarn having a residual draw ratio in the range of from 1.6 to 2.0 and a continuous filament polyamide feed yarn having a residual draw ratio in the range of from 106 to 120 percent of the residual draw ratio of the polyester feed yarn. The process involves the steps of: (1) combining the yarns; (2) false twist texturing and drawing the combined yarns in a draw-texturing zone comprising feed rolls, a heating means, a friction twisting element and draw rolls; (3) randomly entangling the combined and textured yarns together in a jet-intermingling zone formed by an air jet device; and (4) withdrawing the heather yarn so produced.

Abstract: A process is disclosed for producing a continuous multifilament yarn of melt-spinnable, polymeric material which is essentially free from stretch and which comprises draw-texturing a first continuous filament yarn end, combining the first end with a second flat continuous filament yarn end, and feeding the combined textured and flat ends through a jet interlacer in an overfeed condition with the textured end being fed at a greater rate of overfeed than that of the flat end. An alternate process is disclosed wherein draw-texturing of the first textured yarn end and drawing of the second flat yarn end are performed simultaneously prior to jet interlacing of the overfed combined ends. Also disclosed is the spun-like continuous multifilament yarn produced by the novel process as well as resulting fabric made from the yarn.

Abstract: A process is disclosed for producing a continuous multifilament yarn of melt-spinnable, polymeric material which comprises draw-texturing first and second continuous filament yarn ends separately and then combining the yarn ends in an interlacing zone by feeding one of the yarn ends at a higher speed than the other through a jet entangler to interlace the yarns together. Also disclosed is the spun-like continuous multifilament yarn produced by the novel process.

Abstract: This present invention relates to a spun yarn having novel structure and a method of producing the same. The spun yarn of the present invention consists of a number of fibers arranged in a predetermined direction and twisted together, one end of which fibers is spirally wound around the surface of the yarn. The yarn of the present invention is spun by successively passing a sliver through a pneumatic yarn twisting device, untwisting tube, and false twisting device in turn. The twisting device, untwisting tube and false twisting device are disposed between front rollers and delivery rollers.

Abstract: A method for producing a spun-like yarn simulating a staple yarn is described wherein continuous filament yarn is produced which has characteristics similar to a staple spun yarn. The unusual continuous filament yarn produced is made by a texturing process which involves the crimping of a continuous synthetic yarn followed by overfeeding to an air bulking means and then to heat setting means. The preferred method utilizes false twist texturing of synthetic filaments such as polyester, nylon, cellulose acetate or cellulose triacetate and mixtures thereof with an air bulking jet interposed to act on the false twist textured yarn while it has a high residual torque and subsequently decaying said torque.

Abstract: Herein disclosed is an apparatus for producing a bulky yarn like natural fibers. The apparatus comprises a twist mechanism provided on a yarn travelling path for twisting and untwisting a yarn; a rubbing mechanism provided on the yarn travelling path of the yarn which is twisted by the twist mechanism and having a rough surface so as to rub filaments constituting the yarn for imparting scratches thereto; and a stretching mechanism provided on the downstream of the rubbing mechanism along the yarn travelling path of the untwisted yarn to stretch the yarn so that the filaments are severed at their scratches to produce a bulky yarn.

Abstract: A method for producing ingrain spun-like yarn simulating a blended staple yarn is described wherein continuous filament yarn is produced which has characteristics similar to blended staple spun yarns. Fabrics made from the yarns described herein provide a fine grained heather appearance without the normal moire or plaiting effect seen in previous ingrain continuous filament yarn fabrics. The unusual continuous filament yarn described herein is made by a texturing process which involves the combination of two or more differently dyeable continuous synthetic yarns which are false twist textured followed by overfeeding to an air bulking means. The preferred method utilizes false twist texturing of synthetic filaments such as polyester, nylon, cellulose acetate or cellulose triacetate and mixtures thereof wherein two differently dyeable yarns are combined with an air bulking jet interposed to act on the false twist textured yarn while it has a high residual torque and subsequently decaying said torque.

Abstract: An air jet nozzle to entangle the filaments of at least a pair of multifilament yarns passing therethrough. Air is supplied substantially perpendicular to the yarn passing through the jet and an air deflector is employed on the entrance side of the jet to prevent the supplied air from blowing residue from the yarn into the yarn break detector switches.

Abstract: The invention is related to a process for the production of staple-fibre-like textured continuous filament yarns by interlacing and false-twisting, wherein a partly drawn filament is heat-treated before the texturing process, this filament is subsequently interlaced with a non shrunken filament and both are finally subjected to draw texturing.

Abstract: Process and apparatus for transferring heat between an advancing filamentary yarn and a fluid in which the yarn is passed through a vortex in the fluid substantially along or parallel to the longitudinal axis of the vortex.

Abstract: Self-twist plural yarn strands are produced by a system wherein at least two singles yarn strands are individually twisted to form twisted strands each having longitudinally spaced nodes, and strands are brought together in a parallel relationship with the nodes of one strand substantially aligned with the nodes of each other strand. The corresponding nodes from one strand are fastened to those of each other strand, and the strands are allowed to ply. The node fastening means comprises a rotating member having a contact surface for fastening the nodes by gathering and twisting of the fibers from one strand with those of another strand at the nodes of each respective strand. Ply yarn twist uniformity is assured through the use of improved twist insertion jets, together with a means for holding singles yarns separate to allow longitudinal levelling of singles yarn torque prior to plying.

Abstract: This present invention relates to a spun yarn having novel structure and a method of producing the same. The spun yarn of the present invention consists of a number of fibers arranged in a predetermined direction and twisted together, one end of which fibers is spirally wound around the surface of the yarn. The yarn of the present invention is spun by successively passing a sliver through a pneumatic yarn twisting device, untwisting tube, and false twisting device in turn. The twisting device, untwisting tube and false twisting device are disposed between front rollers and delivery rollers.