Abstract: A draw device into which at least two filaments are guided for producing a multi-coloured yarn from differently coloured filaments which consist of a plurality of endless filaments includes a pair of intake rollers for receiving the at least two filaments. Two pairs of drafting system rollers follow the intake rollers to draw the at least two filaments. A texturizing device comprising a texturizing nozzle with a cooling drum is disposed downstream of the two pairs of drafting system rollers to texturize the at least two filaments, wherein at least one yarn is formed from the filaments in the texturizing nozzle. At least one further nozzle is disposed exclusively upstream of the texturizing device in which each filament is separately interlaced. The filaments are drawn on at least one of the two pairs of drafting system rollers at a speed of at least 1,700 m/min.

Abstract: A steam drawing apparatus for providing pressurized steam on running yarn to draw the yarn, comprising a steam chamber; first seal chamber adjacent to a yarn entrance of the steam chamber; and second seal chamber adjacent to a yarn exit of the steam chamber, first seal chamber and second seal chamber are each provided with a labyrinth seal section having a plurality of plate pieces, first yarn-position regulating bar is provided to prevent the running yarn from touching the plate pieces, first yarn-position regulating bar extends horizontally intersecting the running direction of the yarn at right angles, and a horizontal plane passing through the point of the first yarn-position regulating bar closest to the yarn is set at least 0.1 mm closer to the yarn than a horizontal plane passing through the tip of the plate piece closest to the yarn.

Abstract: A steam drawing apparatus for providing pressurized steam on running yarn to draw the yarn, comprising a steam chamber; first seal chamber adjacent to a yarn entrance of the steam chamber; and second seal chamber adjacent to a yarn exit of the steam chamber, first seal chamber and second seal chamber are each provided with a labyrinth seal section having a plurality of plate pieces, first yarn-position regulating bar is provided to prevent the running yarn from touching the plate pieces, first yarn-position regulating bar extends horizontally intersecting the running direction of the yarn at right angles, and a horizontal plane passing through the point of the first yarn-position regulating bar closest to the yarn is set at least 0.1 mm closer to the yarn than a horizontal plane passing through the tip of the plate piece closest to the yarn.

Abstract: A pressure steam treatment apparatus according to the invention includes a pressure steam treatment chamber and labyrinth sealing chambers. The labyrinth sealing chambers are respectively arranged on a fiber bundle inlet and on a fiber bundle outlet of the steam treatment apparatus, having a running path of the fiber bundle in a horizontal direction and having plural labyrinth nozzles on top and bottom of the running path. The difference between a maximum value and a minimum value of the distance in the perpendicular direction of the top and bottom side labyrinth nozzles, of a pair of opposing labyrinth nozzles is 0.5 mm or smaller when the ambient temperature of the labyrinth sealing chamber is 140° C. This structure ensures that the energy cost can be reduced, the deformation of the apparatus and also, the raise of fuzz on the fiber bundle and fiber bundle breakage can be prevented at the same time.

Abstract: A heating apparatus and process useful for drawing ultrahigh molecular weight polyolefin fibers, such as polyethylene libers. The heating apparatus includes a first set of rolls and a plurality of aligned ovens. The apparatus includes a second set of rolls at the exit of the ovens which rolls are adapted to provide the desired drawing of the polyolefin fibers. The apparatus and process provide a single draw step in a heated environment, with the use of preferably four or six horizontal ovens.

Abstract: Systems and methods for manufacturing synthetic yarns for synthetic turf. The systems and methods include rollers for advancing a plastic sheet forward through a manufacturing process. The plastic sheet is cooled and heated on opposing sides by alternating temperature rollers to pre-form the plastic sheet such that subsequent synthetic yarns made from the sheet will have a curled shape. The plastic sheet is then cut longitudinally by a plurality of slitting blades along the length of the sheet to form a plurality of single strand synthetic yarns. A drawing device then draws and stretches the single strand synthetic yarns to a desired width and thickness, wherein the drawing device includes a drawing oven for heating the yarns, and a plurality of drawing rollers for pulling and stretching the heated yarns. The final product drawn yarns comprise sealed, smooth yarns with desirable rounded edges and a curled tip.

Abstract: A heating apparatus and process useful for drawing ultrahigh molecular weight polyolefin fibers, such as polyethylene fibers. The heating apparatus includes a first set of rolls and a plurality of aligned ovens. The apparatus includes a second set of rolls at the exit of the ovens which rolls are adapted to provide the desired drawing of the polyolefin fibers. The apparatus and process provide a single draw step in a heated environment, with the use of preferably four or six horizontal ovens.

Abstract: Open end yarn is passed through a drawing zone located between a front roller and a back roller controlled to rotate at different velocities. An air jet nozzle is located between the two rollers and directs a jet of air at the yarn. The drawing improves various characteristics of the yarn, making the processed yarn more suitable for making textile articles.

Abstract: OE yarn is passed through a drawing zone provided between a front roller and a back roller controlled to rotate at different velocities. An air jet nozzle is located between the two rollers and directs a jet of air at the yarn. The drawing causes improvements in various characteristics of the yarn making the processed yarn more suitable or useful for making up into textile articles.

Abstract: The invention relates to a method and an apparatus for spinning and crimping a multifilament yarn, and wherein a thermoplastic melt is extruded through a spinneret to form a filament bundle. The filament bundle is divided into a plurality of bundle components before being crimped. Each bundle component is separately crimped and combined to a multifilament yarn after being crimped. The yarn is subsequently wound to a package.

Abstract: A compact core and effect yarn producing texturing machine which employs a face plate on which the core and effect yarn godets are mounted in one area of the face plate and another pair of godets are mounted in another area of the space plate. A loop breaker is mounted on said face plate between the godets of the ones mounted in another area of the face plate to break the loops of yarn produced in an air jet mounted between the core and effect yarn godets and the other set of godets.

Abstract: A tow of filamentary filter material for tobacco smoke is stretched between an upstream pair and a downstream pair of advancing rolls. Suction nozzles are provided to evacuate air from those portions of the path for the tow which are located immediately upstream and immediately downstream of the path section at the nip of the downstream advancing rolls. This prevents eddying of air at the nip and a fluttering of filaments of the tow.

Abstract: A tow of filamentary filter material for tobacco smoke is stretched between an upstream pair and a downstream pair of advancing rolls. Suction nozzles are provided to evacuate air from those portions of the path for the tow which are located immediately upstream and immediately downstream of the path section at the nip of the downstream advancing rolls. This prevents eddying of air at the nip and a fluttering of filaments of the tow.

Abstract: A tow of filamentary filter material for tobacco smoke which is to be converted into a rod-like filler of a filter rod is conveyed along an elongated path first through a stretching or tensioning zone where the filaments are stretched and the tow is converted into a relatively wide flat web, thereupon along a relaxing portion of the path wherein the tensioning action upon the filaments is reduced, thereupon along a third portion wherein at least one side of the running web is contacted by droplets of an atomized plasticizer, and thereafter along a fourth portion of the path wherein the web is gathered by reducing its width so that it more closely resembles a rod which is thereupon draped into a web of cigarette paper or other suitable wrapping material. A wind tunnel surrounds at least one portion of the path to confine at least one stream of air which is caused to flow in the direction of advancement of the tow. A tunnel can surround the stretching zone, the relaxing and/or the fourth portion of the path.

Abstract: The invention relates to a filling yarn made of a thermally protected polyamide 66 multifilament for a tire cord fabric.

Abstract: In the production of multicolored yarn from differently colored filament bundles, the individual bundles may be texturized collectively. Then they are separated again into crimped part-threads 11.3 through 11.5 and are compacted individually in after-compacting means 8 before these part-threads are jointly compacted in a collective compacting means 9 and subsequently are wound up as a yarn 12 in a winding device 10.

Abstract: In the production of multicolored yarn from differently colored filament bundles, the individual bundles may be texturized collectively. Then they are separated again into crimped part-threads 11.3 through 11.5 and are compacted individually in after-compacting means 8 before these part-threads are jointly compacted in a collective compacting means 9 and subsequently are wound up as a yarn 12 in a winding device 10.

Abstract: A process for producing high strength, high shrinkage nylon 66 filament yarn for industrial fabrics formed as airbag fabrics, the process having the steps of drawing of a nylon 66 LOY filament yarn having a relative viscosity RV of at least 40 by at least three heatable draw roll units, winding the drawn yarn onto a cylindrical yarn support, and at a relaxation ratio of 4 to 10% setting a temperature of a last draw roll unit before winding to between 70.degree. C. and 160.degree. C., and setting a winding tension to less than 0.2 cN/tex.

Abstract: The invention comprises a fixture and method for holding optical waveguid such as fiber optic cable, in a relatively stable fashion for processing. The fixture includes a first frame and a second frame, releasably securable to the first frame to form a unitary structure. Chambers disposed in at least one of the frames are adapted for removably receiving optical fiber cable when the first and second frames are released from one another and for securely retaining with molding material optical fiber cables when the first and second frames form the unitary structure. A process area is defined in the unitary structure such that segments of optical fiber cables secured therein are accessible in the process area for processing. An optional coating fixture is securable to said unitary structure for forming with a molding material a protective coating about the cable segments in the processing area.

Abstract: A method of and apparatus for producing a thin/thick effect yarn provides a thin/thick effect by segmentwise stretching of a filamentary precursor yarn which is combined with a fully-stretched filamentary precursor yarn so that the latter supports the former. The combination can be effected by twisting, nub entanglement or winding of one yarn around the other.

Abstract: An apparatus and method for the production of a multicomponent yarn which is composed of several multifilament strands with differing characteristics, such as color. The individual strands are drawn in parallel and simultaneously by a pair of godets following spinning, and then crimped by compression in an air jet crimping device. According to the invention, the individual strands are spread apart from one another prior to run-off from the drawing godet in such a way that the distance in the axial direction between the run-off points of the individual strands on the godet surface is increased. This spreading of the strands assures that the strands do not intermix prior to entering the air jet crimping device.

Abstract: A method and apparatus for spinning, drawing and winding a synthetic multi-filament yarn, wherein the yarn is subjected after drawing and prior to winding to a heat treatment for purposes of reducing its shrinkage tendency. In the heat treatment, the yarn advances along an elongated heating surface closely adjacent thereto but substantially in no contact therewith. The heating surface has a surface temperature which is above the melt point of the yarn. During the heat treatment, the yarn is subjected to a tension which is lower than the tension required for plastic deformation. The yarn wound by this method has a heat shrinkage tendency which is typically more than about 20%.

Abstract: This invention comprises a yarn threading apparatus for a draw texturing machine for enabling yarn threading through yarn guides to be easily carried out with respect to a non-contact type heater positioned horizontally in the upper part of the machine, with a twist exerting apparatus comprising a nozzle part for supplying compressed air for transporting such yarn through a guide pipe which guides the transported yarn to the entrance of the heater and retractable guides in said heater retractable when the yarn is being threaded and insertable after the yarn is threaded for receiving a guide such threaded yarn.

Abstract: A process and apparatus for simultaneously drawing and interlacing partially oriented thermoplastic yarns. The process is carried out in a single apparatus by maintaining the yarn under drawing tension and simultaneously contacting the tensioned yarn with a gaseous fluid at an angle, temperature and pressure such that the yarn is simultaneously drawn and interlaced at the point it is being drawn.

Abstract: This invention relates to a method and apparatus for producing a polyester fiber which cools a plurality of molten polyester fibers from a spinnert 2 to a temperature below a glass transition point, then takes up the fibers by a non-heating first godet roller at a take-up speed less than 4,000 m/min, heat-stretching the fibers between the first godet roller and a non-heating second godet roller 10 inside a normal pressure steam atmosphere (first heat-treating device 8) higher than the glass transition point of the polyester fiber, and heat-treats the fiber by a pressurized steam atmosphere (second heat-treating device 9) higher than 105.degree. C.

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.

Abstract: Stretching apparatus for synthetic filaments is provided with plates (5.1 and 5.2) located in a stretching bath S in spaced apart facing relation to one another to provide a space between which the filaments are drawn along a path. The plates are structured in accordance with the invention (as shown in FIGS. 7 to 16a) so that vibration of the yarn during the passage through the stretching bath is suppressed. At least one of the plates is penetrated by holes which open at the plate surface facing the yarn path.

Abstract: The stretching chamber arrangement comprises a stretching chamber with a first closeable feed conduit, a return conduit, a liquid container and a pump for the circulation of the liquid through the stretching chamber. For premoistening the yarns to prevent dry friction during the start-up of the arrangement, a second feed conduit is provided which by-passes the closing valve of the first feed conduit and which opens out into the yarn duct through small premoistening openings situated in the direction of the yarn travel in the area of the yarn entrance in front of the first yarn guiding element of the arrangement.

Abstract: An apparatus for stretching natural staple fibers to reduce their diameter includes a plurality of rotatable arrays of driven pulleys which are mounted for rotation between two twist blocking nips. The rotatable arrays are rotatable on a longitudinal axis corresponding to the direction of travel of an assembly of fibers through the apparatus to impart false twist into the assembly. The assembly of fibers is stretched between two of the pulley arrays with the pulleys of the downstream array being driven at a higher speed than the pulleys of the upstream array. A steam chamber is provided for setting the stretch while the false twist is being maintained by further rotatable pulley arrays. Post treatment stages may be added to further stabilize the stretched fibers.

Abstract: Two-component loop sewing yarn composed of core and effect filaments of high tenacity and low shrinkage made of synthetic polymers, having an ultimate tenacity of above 40 cN/tex, a thermoshrinkage at 180.degree. C. of below 8% and an ultimate tensile strength elongation of below 18%, has a total count of 200 to 900 dtex, its core filaments and effect filaments being in a weight ratio of 95:5 to 70:30 with the linear density of the core filaments being 8 to 1.2 dtex and that of the effect filaments being 4.5 to 1 dtex.

Abstract: A method and apparatus to texture synthetic yarn in which the pin heater used in the drawing step of the system is moved periodically to spread the wear on the surface thereof. The pin heaters are mounted on a bar which is slid sideways by a periodically actuated cam member.

Abstract: Threads consisting of one or more filaments are drawn by being pulled through a braking fluid. Threads consisting of a plurality of filaments are formed into a ribbon for the drawing process. Inside the drawing bath, the thread is heated to a temperature corresponding to its second order transition temperature and is braked in such a way that its tension reaches the tension necessary for drawing the filament or the filaments. Through setting and/or controlling the length of the thread path inside the braking fluid, the viscosity of the fluid, additional mechanical braking means and/or the flow characteristics in the bath, the process is made adaptable for different thread materials and different thread speeds and can be optimized for thread quality. The device for carrying out the process has a quasi-closed main chamber through which a braking fluid is circulated. An antechamber with a variable fluid level may be arranged in front of the entrance to the main chamber.

Abstract: A fabric material that has a high resistance to tearing and is useful for sporting goods utilizing wind pressure, for example, yacht-sails, paragliders and hanggliders, comprises a woven fabric comprising, as a principal fiber component, polyester fibers and satisfies the following specifications:(1) a basic weight of 20 to 100 g/m.sup.2,(2) a tensile strength of 30 kg/5 cm or more,(3) an ultimate elongation of 18% or more,(4) a burst strengh of 0.18 kg/cm.sup.2 or more,(5) a tear strength of 1.0 kg or more, and(6) an air permeability of 1.0 ml/cm.sup.2 /sec or lessand preferably the polyester fibers have an intrinsic viscosity of 0.7 to 0.95, an individual fiber thickness of 1.5 to 3.0 denier, a tensile strength of 6.0 g/d or more, an ultimate elongation of 20% or more, a gradient A of a stress-strain curve at a point on the curve at which the elongation of the fibers is zero, of 1.

Abstract: A process for drawing thermoplastic multifilament yarns, wherein the yarns have different natural draw ratios, at least one of which is greater than the machine draw ratio used in the process. The yarns are first impinged with a hot fluid to heat them to an elevated temperature and then stretched over a set of draw rolls at a single machine draw ratio. In a preferred aspect of the invention, the yarns are crimped after stretching. Preferably, the thermoplastic yarns are either polypropylene or polyamide yarns.

Abstract: In sizing and drawing of one or more textile filaments, particularly a warp sheet of multiple filaments, by successively conveying the filaments through a sizing bath, a driven squeezing mechanism, a differentially driven spaced drying roller, and a warp beam or other filament winding mechanism, the filaments are heated to a temperature of approximately 100.degree. C. and maintained in a predetermined moistened condition, e.g., by the application of saturated airborne water vapor, within the draw zone between the squeezing mechanism and the drying roller, in order to achieve a sufficiently elevated temperature for draw stretching of polyester filaments, particular POY and LOY filament, without premature drying and undesirable cracking of the sizing applied to the filaments.

Abstract: A method for drawing a synthetic thread having a fibril bundle delivers the thread as a ribbon of substantially parallel fibrils through a drawing bath to effect a hydrodynamic braking of the filaments and simultaneous drawing of the filaments. A ceramic pin is used to form the fibrils into parallel relation and substantially in one plane. A second ceramic pin may also be used as a mechanical brake to add to the hydrodynamic braking action by the liquid in the drawing bath. The base and cover of the drawing device are provided with channels to define the flow path for the bath liquid as well as inlet and outlet channels for the liquid. Suction nozzles or air nozzles may be provided at the inlet and outlet ends of the flow paths to remove excess liquid from the fibrils.

Abstract: An apparatus and method for processing a warp sheet of synthetic multifilament yarns is disclosed, and wherein the yarns may be withdrawn from supply packages and advanced along a path of travel in warp sheet form, heated and drawn while in advancing warp sheet form to orient the filaments, and then wound for example on a warp beam. Upon detection of a yarn break, the advance of the warp sheet is terminated, and means are provided for interrupting the application of heat to the sheet while the advance is terminated so as to avoid damage to the remaining yarns from a continued application of heat.

Abstract: The method for the production of partial warps wound on warping beams or sectional beams, or warps of synthetic filament yarns wound on warp beams, which are completely stretched and sized, consists of sizing a group of parallel synthetic thermoplastic filament yarns, the filaments of which are not completely stretched, in a sizing zone, predrying the sized yarns in a heated predrying zone, subjecting the predried sized group of yarn by final drying in a heated final drying zone, and finally winding the dried group of yarns on warping or (sectional) beams, while the filaments of the filament yarns are stretched jointly and simultaneously in the predrying zone. The stretching occurs preferably between rolls (5, 6) assigned to the sizing zone and rolls (10) assigned to the final drying zone. The method may be carried out with conventional, at most slightly modified sizing machines and it furnishes very uniform partial warps or warps.

Abstract: An air texturing system for partially oriented yarn in which a draw block of aluminum or other suitable material is employed to provide two stages of drawing for the yarn to be textured. The draw block has an inlet offset from the outlet to provide for one stage of drawing between the inlet and outlet of the draw block.

Abstract: A procedure for the drafting and interlacing of a series of continuous, thermoplastic yarns, consisting of filaments which are substantially parallel to one another, in the manufacture of warp wound on beams.

Abstract: A continuous high speed spin-draw-false twist texturing process for producing a textured nylon yarn having high yarn uniformity is disclosed. The process comprises the steps of (a) melt-spinning a plurality of nylon filaments from nylon polymer; (b) cooling the filaments and combining them to form a yarn; (c) controlling the processing conditions of the nylon polymer of step (a) such that the relative viscosity of the yarn formed in step (b) is at least 45; (d) partially drawing the yarn at a draw ratio of from 2.3 to 3.5 and a temperature of at least 50.degree. C.; (e) simultaneously false twist texturing and further drawing the partially drawn yarn in a draw-false twist texturing zone at a draw ratio of from 1.1 to 1.5; and (f) withdrawing the textured nylon yarn at a speed of at least 1500 meters per minute. The process is particularly useful for the manufacture of textured nylon yarn having a linear density in the range of from about 10 dtex to about 50 dtex.

Abstract: Drafting system for textile yarns and including a driven feed roll, a driven output roll, a low friction freely rotatable heated roll located between the driven feed roll and the driven output roll and operating at essentially the same surface speed as the driven feed roll, the freely rotatable heated roll being driven by engagement with the yarn and whereby sufficient yarn tension automatically is transferred upstream of the freely rotatable heated roll to pretension the yarn before it contacts the freely rotatable heated roll with drafting taking place near the location where the yarn leaves the freely rotatable heated roll to pass toward the driven output roll.

Abstract: Lightweight nonwoven sheets of polyethylene plexifilamentary film-fibril strands are made by a stretching-and-bonding operation in which the unit weight of the sheet is decreased in stages while at a temperature within 3.degree. to 8.degree. C. of the melting point of the polyethylene. The resultant sheet has a novel combination opacity, X-ray scattering and physical characteristics and is particularly suited for sterile packaging, lightweight envelopes and surgical drapes.

Abstract: Low friction drafting system for yarn and having in sequence a driven feed roll, a low friction freely rotatable hot roll for preheating the yarn, a low friction freely rotatable hot roll for thermally stabilizing the yarn, a driven output roll, with tension automatically transferring upstream of the preheater roll to preheat the yarn and with the two heated rolls being driven by engagement with the yarn; the thermally stabilizing roll operates at a greater speed than the preheater roll and drafting of the yarn occurs between the two freely rotatable hot rolls.

Abstract: In a coupled two-stage draw, constant-length annealing process for making polyamide yarn, heat for assisting the second-stage draw is provided by means of an environmentally-heated metal shoe located in an annealing hot chest.

Abstract: Apparatus for spinning viscose rayon comprising an acid bath having an enclosure arranged for substantially completely trapping and collecting any gases emanating from said bath, a plurality of fiber-forming jets disposed substantially along beneath the surface of said acid bath, means for forcing aqueous xanthated alkali cellulose in liquid form into said jets and through said jets upwardly into said bath, and take-up means located within said enclosure above said bath for taking up the resulting fibers in an upward direction within said enclosure, and thence through an enclosed secondary hot bath for the purpose of stretching the cellulose-xanthate, regenerating it to cellulose, and for trapping and collecting gases and other chemicals.

Abstract: High-shrinkage stretch-broken tows of acrylonitrile polymers are obtained by fixing with saturated steam at maximum temperatures of 140.degree. C. after drawing and before stretch breaking and stretch breaking at a draft of at least 30%.

Abstract: Disclosed is an apparatus for producing a bundle of fibrous elements, at least some of which are uneven in the thickness in the axial direction thereof, namely some of which include thick portions having a larger sectional area and thin portion having a smaller sectional area. In these fibrous elements constituting the fibrous bundle, the thick portions have, in general, a higher dyeability than the thin portions, and in the fibrous bundle, these higher dyeability portions are formed substantially randomly at a distribution ratio of at least 300 portions per 10 cm of the length of the fibrous bundle. This fibrous bundle is characterized in that it apparently resembles a fibrous bundle composed of fibrous elements uniform in the thickness and dyeability.

Abstract: An apparatus providing a hot section in a continuously moving synthetic yarn wherein at least one jet of hot fluid obliquely is directly across the moving yarn. The jet intersects the yarn at an obtuse angle to the approaching yarn. The apparatus also produces drawn yarn by passing undrawn yarn into the jet and tensioning the yarn as it passes through the jet. The apparatus includes a body member formed with a chamber formed with yarn entry and exit passages and a fluid ejecting nozzle. The body member may be additionally formed with a cavity opening from the chamber opposite the nozzle.

Abstract: A method of providing a hot section in a continuously moving synthetic yarn comprises directing at least one jet of hot fluid obliquely across the moving yarn. The jet intersects the yarn at an obtuse angle to the approaching yarn. The method also produces drawn yarn by passing undrawn yarn into the jet and tensioning the yarn as it passes through the jet. Apparatus for performing the method includes a body member formed with a chamber formed with yarn entry and exit passages and a fluid ejecting nozzle. The body member may be additionally formed with a cavity opening from the chamber opposite the nozzle.