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 fluff suppression apparatus comprising a pair of rollers disposed with axes of rotation thereof crossed with each other and in contact with each other for nipping a spun yarn thread, and at least one of the pair of rollers has, at a contacting portion thereof with the spun yarn thread, has resiliency and flexibility and has a cavity formed in the inside thereof.

Abstract: A spinning apparatus for producing a spun yarn by using swirling air currents to twist a non-twisted short staple fiber bundle drafted by a drafting unit. A nozzle block having at least one nozzle provides a swirling air current that acts upon the fiber bundle. A fiber bundle passage is defined by the nozzle block and a needle holder having a substantially central, longitudinal axis and a guide surface that twists relative to the longitudinal axis. A guide member associated with the needle holder projects toward the inlet of a hollow spindle.

Abstract: Disclosed is a method and apparatus for forming diagonal splices in flexible, fusible material and the material spliced accordingly. The splice is formed by overlapping the material, tensioning the material at the area to be spliced, and heating a strip of the material under tension to its fusion temperature, thereby fusing and separating the material at the strip. The splice is nearly undetectable to the untrained eye.

Abstract: A method and apparatus for piecing a sliver and at least one of a leading yarn and a bobbin yarn. A nozzle member and a spindle member having a hollow spindle are provided. A relative spacing is established between the nozzle member and the spindle member. At least one of a leading yarn and a bobbin yarn is inserted into the hollow spindle of the spindle member relatively spaced from the nozzle member. The relative spacing between the spindle member and the nozzle member is decreased, so that the spindle member and the nozzle member mutually form an air chamber. A compressed air flow is directed into the air chamber. Sliver is supplied to at least one of the leading yarn and the bobbin yarn, and the sliver and at least one of the leading yarn and the bobbin yarn are pieced together.

Abstract: A post-coalescence melt-spinning process for preparing fine undrawn hollow polyester filaments having excellent mechanical quality and uniformity at high speeds (2-5 km/min) involving selection of polymer viscosity and spinning conditions, whereby the void content of the resulting new undrawn filaments is essentially maintained or increased on cold-drawing or hot-drawing with or without post heat treatment, and the new fine hollow polyester filaments obtained thereby.

Abstract: A continuous process for spinning and drawing polyamide filaments with the steps of melting a polyamide and spinning the filaments from the molten polyamide through a spinnerette, quenching the filaments, applying a yarn finish to the filaments, applying steam and heat to the filaments by a steam and heating unit which consists of a steam box and at least one heated godet, drawing the filaments, and optionally texturing the filaments. The resulting filaments have low shrinkage, high crystallinity, and a high percentage of alpha crystals.

Abstract: A yarn entangling device having a housing with an air pressure cushion in it for urging a piston normally outwardly of the housing. The piston has an air passage through it. Shifting the piston outwardly blocks the air passage. A blast nozzle is secured to the piston for being supplied with air through the piston. A baffle plate opposed to the blast nozzle defines a yarn channel. A holder supports the baffle plate for movement away from and into contact with the blast nozzle. With the holder moving the baffle plate toward the blast nozzle, the piston is shifted to open the air passage to the piston, and with the yarn channel opened with the baffle plate away from the blast nozzle, the piston is moved out of the housing by the air pressure cushion cutting off the air flow to the blast nozzle. A closing flap acts through a detent to secure the holder and baffle plate to close the yarn channel.

Abstract: A method and apparatus for sucking a free end of an optical fiber includes a sucking nozzle. The sucking nozzle is positioned downstream of a capstan wheel around which the optical fiber is wound. The opening of the sucking nozzle is positioned within a range of movement of a path line of the free end of the optical fiber. The path line of the end of the optical fiber moves in accordance with the speed of travel of the optical fiber. The sucking nozzle is positioned perpendicular to a plane defined by the path line of movement of the end of the optical fiber and transverse to an axis of the capstan. Thus, the sucking nozzle is positioned to reliably suck a free end of the optical fiber for a broad range of speeds of the optical fiber.

Abstract: A nozzle device for processing of synthetic yarns for intermingling or texturization. The nozzle device has a housing with an inlet end and an outlet end. The inlet end is located upstream in relation to the outlet end. An inner nozzle member is provided and has a conical outer wall portion and an essentially axial passage. An outer nozzle member is provided and has a conical inner wall portion. Both inner and outer nozzle members are kept in position within the housing. The conical outer wall section of the inner nozzle member and the inner wall portion of the outer nozzle member together form an outwardly conical gap having an upper or upstream end and a lower or downstream end. Inlet conduits or ducts are provided for passing a fluid into the housing and into a region thereof adjacent the upper end of the conical gap. The conical gap is defined by a generally annular cross-sectional area in any radial plane between the upper and the lower end of the gap.

Abstract: In a cigarette filter rod manufacturing plant at least one tow bale (6; 108) is located in a position remote from the corresponding tow opening machine (2; 100) and a conveying system (10; 112) is provided for transporting the tow to the machine. In a preferred arrangement the conveying system comprises a pneumatic duct (10) in which the tow is conveyed with the assistance of air movers (12). Removing the tow bales from the vicinity of the machines, preferably to a common area, allows flexibility in laying out a production floor and provides easy access for replacement of the bales.

Abstract: Polyester mixed fine filament yarns having excellent mechanical quality and uniformity, and preferably with a balance of good dyeability and shrinkage, are prepared by a simplified direct spin-orientation process by selection of polymer and spinning conditions.

Abstract: Polyester fine filaments having excellent mechanical quality and uniformity, and preferably with a balance of good dyeability and shrinkage, are prepared by a simplified direct spin-orientation process by selection of polymer viscosity and spinning conditions, followed by drawing and/or bulking.

Abstract: A method for spinning yarn produce the yarn having properties generally comparable to those of ring spun yarn. A rotatable hollow shaft having an entrance at one end and an exit at the other is rotatable about an axis extending in a direction A. A number of free fibers are fed in the linear direction A in a fiber mass, certain of the fibers having free trailing ends. The fiber mass is passed into the interior of the hollow rotatable shaft through the entrance. An air flow is established with respect to the shaft to effect separation of the free trailing ends of the fibers, preferably by establishing an air flow path that is initially substantially unidirectionally in direction A and then is deflected to move at an angle with respect to the direction A away from the shaft. The shaft is rotated at high speed about its axis so that the trailing ends of the fibers wrap around other portions of the fiber mass to produce a yarn, and the yarn is withdrawn through the exit of the shaft.

Abstract: A draft device is provided with a rotatable porous roller and a suction tube for establishing a negative pressure within the porous roller. A pneumatic spinning apparatus is provided with a spindle and a nozzle for exerting a whirling air current on a fiber bundle from the draft device. A waste transport pipe is provided for circulating waste discharged from the spinning apparatus back to the porous roller. Waste discharged from the spinning apparatus is thereby recycled to join with the fiber bundle from the draft device.

Abstract: Polyester filaments of high shrinkage and high shrinkage tension may be prepared by heat treatment of undrawn crystalline filaments of low shrinkage and shrinkage tension, and may be used for making polyester yarns of mixed shrinkage and bulky polyester yarns and fabrics therefrom.

Abstract: A spinning nozzle comprises first and second nozzles provided with jetting holes through which compressed air is jetted into tubular yarn passages extending along an imaginary center line of the spinning nozzle, and arranged in series coaxially with the imaginary center line, and the second nozzle is provided in its outlet end with a balloon controller having a through hole having substantially a triangular cross section. The size of the balloon is limited to that of a circle inscribed in the through hole of the balloon controller, so that twists inserted in the yarn in the second nozzle propagate stably to a portion of the yarn in the first nozzle.

Abstract: Hollow polyester undrawn filaments having excellent mechanical quality and uniformity are prepared by a simplified post-coalescence melt spinning process at speeds of e.g. 2-5 km/min by selection of polymer and spinning conditions whereby the void content of the undrawn filaments can be essentially maintained or even increased when drawn cold or hot, with or without post heat-treatment.

Abstract: An air nozzle for use in the production of nonwoven fabric that is adapted to receive spun filaments from a spinning nozzle and feed the filaments in an air jet into a receiver. The air nozzle is directed to the prevention of any abrasion of the inner surface of the nozzle body by an additive, such as titanium white, contained in filaments, and thus to the prevention of any defects in the nonwoven fabric. The inner surface of a nozzle body for guiding filaments is formed using a ceramic material to protect that surface. The nozzle body has a conical passage whose diameter gradually decreases from an inlet for receiving the filaments from the spinning nozzle, and a straight passage continuing from the conical passage and extending with a constant diameter, at least part of the inner surface of the conical passage and/or the straight passage being formed as a ceramic surface.

Abstract: In a device for the knotless joining of threads and yarns using compressed air, a chamber is provided including central region of substantially U or V cross-section, possibly with a flat base, and two lateral regions of substantially circular cross-section. The slits of the three regions, through which the yarns to be joined are inserted, form a continuous common gap which is closable frontally by a cover. A nozzle opens into the base of the central region in a direction perpendicular to the frontal opening of the slit of said central region, and a nozzle opens into the base of each lateral region opposite the frontal opening of the relative slit in a direction substantially tangential to the circular cross-section, these latter two nozzles being in opposing positions and feedable with compressed air via a duct which is separate from the feed duct for the nozzle opening into the central region.

Abstract: A pneumatic spinning apparatus comprises a nozzle block having a nozzle which gives a whirling air stream to a fiber bundle coming out of the draft device, a spindle having a fiber bundle passage, a guide member with its forward end protruding into a spindle inlet port, and an introduction tube having a fiber bundle passage which has been separated into a plurality of parts and fixed at the nozzle block inlet side.

Abstract: The device involves the use of two nozzles (5 and 6) alternatively blow air jets against a yarn in the central portion of a channel (1), these nozzles being symetrically placed in relation to a plane containing the channel axis. The jets blowing frequency is of several hundreds of Hz. A deflector (3) in the bottom of channel (1) can deviate the beating thread sidewise and consequently impart thereto alternate twisting and untwisting motion in order to unravel the thread.

Abstract: A method for making a multifilament suture yarn includes jet entangling the filaments of the suture yarn prior to other operations such as twisting and braiding. A multifilament braided suture is made of air entangled suture yarns, such as by braiding. The suture may include a core constructed of entangled yarns, preferably in the form of a cabled core constructed of multiple entangled yarns plied together, the plied yarns being air entangled and twisted in a first direction. Multiple entangled plied yarns twisted in the first direction are combined and twisted in a second opposite direction to form a cabled core.

Abstract: A piecing apparatus for a doubler provided with a processing robot which moves along units of a doubler. The piecing apparatus comprises two piecing devices, a suction mouth for sucking and holding a yarn on the side of a winding package to guide it toward the piecing device, a relay pipe for sucking and holding a yarn on the side of a feed package to guide it toward the piecing device, an upper yarn separating device for separating a doubled yarn on the side of each winding package guided toward the piecing device, and a lower yarn separating device for separating a yarn on the side of each feed package guide toward the piecing device.

Abstract: Air-jet texturing with drawing, especially cold-drawing, or hot-drawing or other heat-treatments of spin-oriented crystalline polyester filaments, and particularly polyester feed yarns, that have been prepared by spinning at speeds of, e.g., 4 km/min, and have low shrinkage and no natural draw ratio in the conventional sense, provides useful technique for obtaining uniform drawn filaments of desired denier and thereby provides improved flexibility to obtain air-jet textured filaments and yarns of various denier. The resulting yarns have useful properties that are improved in certain respects.

Abstract: A novel false twist spinning process in which a sliver (60) is twisted by a mechanical force-twisting device (58) between the front rollers (54) of the drafting unit (51) and the draw off rollers (59). The spinning tension is so adjusted that the false-twisted sliver (60) is prevented from assuming a helical shape and a balloon shape at least in the zone between the nip line (10) of the drafting unit (51) and a yarn guiding element (55) disposed before the false twisting device. In an apparatus for the practice of the process, the mechanical false twisting device (58) comprises discs (58A) or aprons (58B) and the yarn guiding element (55) comprises of a false twisting nozzle (55A, 55B).

Abstract: Described is a method for quantifying interlacing characteristics of multifilamentary yarn, having nodes of a length and a width comprising, (a) measuring the length (L) of at least one node, (b) measuring the width (W) of at least each node measured in step (a) and (c) determining the value of the node harshness from the ratio of L to W for each node measured in step (a).

Abstract: A method for checking operation of a pneumatic splicer for joining two yarn ends at a textile machine includes feeding splicing gas for a predetermined period of time to a splicer to be checked for splicing a particular yarn batch without having yarn ends laid in place in a splicing conduit of a splicer head of the splicer to be checked. At least one status variable of outflowing splicing gas is measured during the predetermined period of time at a given opening in the splicer head. A reference value is measured at another splicer producing replicable spliced joints meeting a previously defined quality and being identical to the splicer being checked, by feeding splicing gas to the other splicer without yarn ends being laid in place in the splicing conduit and measuring the reference value at a given opening in the splicer head. The at least one status variable is compared with the measured reference value and deviations are ascertained.

Abstract: A yarn splicing device for piecing spun yarns without knots. It contains a yarn splicing chamber and a small pipe through which fluid flows, at a distance from the yarn splicing chamber. The small pipe serves to receive a yarn end and to prepare it for the splicing process. The small pipe has a roughened inner surface which makes contact with the yarn end in a battering manner. In the process for the yarn end preparation, the small pipe is traversed turbulently by a fluid. The yarn end is battered by the turbulent flow against the roughened inner surface of the small pipe until the yarn end is free of twist.

Abstract: In a spinning machine for pneumatic false-twist spinning, a plurality of spinning points are provided which are each equipped with one drafting unit. Two air nozzles are connected behind a pair of delivery rollers of the drafting unit and are pivotable around a separate swivel shaft and are connected by a restricted guidance in such a manner that, by an actuating movement, they can be moved into servicing positions which deviate from one another.

Abstract: The method involves the use of two nozzles (5 and 6) which alternatively blow air jets against a yarn in the central portion of a channel (1), these nozzles being symmetrically placed in relation to a plane containing the channel axis. The jets blowing frequency is of several hundreds of Hz. A deflector (3) in the bottom of channel (1) can deviate the beating thread sidewise and consequently impart thereto alternate twisting and untwisting motion in order to unravel the thread.

Abstract: The invention relates to a filament yarn of aromatic polyamides which is impregnated with solid particles of a fluorine-containing polymer and/or graphite. The solid particles are incorporated into the yarn by very uniformly distributing them over the filaments in that the solid particles are applied to the yarn from an aqueous dispersion and the yarn is subjected to a blowing treatment while feeding them at an excess feed rate or not. The yarn thus impregnated is first of all intended to be processed into a packing material or rope.

Abstract: An apparatus for producing of real twist-like yarns wherein a guide member is provided within a nozzle block for exerting a turning stream on a fiber bundle moved out of a drafting device and an extreme end of the guide member is directed at an inlet of a rotary or stationary spindle.

Abstract: A device for joining textile yarns by compressed air in which the joining head comprises a longitudinal chamber divided into two parts by a transverse central fissure, at least one air nozzle opening into each of said parts, that nozzle opening into one part creating an air swirl in one direction of rotation and that nozzle opening into the other part creating an oppositely directed air swirl, the air swirls being in the direction of the original twist of the yarns to be joined. In the transverse central fissure there is disposed a separator baffle provided with a yarn positioning region, the baffle physically separating the two parts of the chamber while leaving a central air vent free. To increase the air quantity discharged through the vent, a transverse fissure can also be provided in the cover which frontally closes the chamber during the joining operation.

Abstract: Drawing, especially cold-drawing, or hot-drawing or other heat-treatments of spin-oriented crystalline polyester filaments, and particularly polyester feed yarns, that have been prepared by spinning at speeds of, e.g., 4 km/min, and have low shrinkage and no natural draw ratio in the conventional sense, provides useful technique for obtaining uniform drawn filaments of desired denier and thereby provides improved flexibility to obtain filaments and yarns of various sub-deniers.

Abstract: Dyeable fibers are formed from polypropylene by blending a major portion of polypropylene with a minor portion of 1) a copolymer of nylon 6,6 and substantially equimolar amounts of hexamethylene diamine and an alkali metal salt of 5-sulfoisophthalic acid or 2) a basic reaction product of substantially equimolar amounts of N-(2-aminoethyl) piperazine and adipic acid, hexamethylene diamine and adipic acid and optionally .epsilon.-caprolactam. The blend is formed in an extruder and extruded into filaments which are quenched in air, stretched 2-4.times. (preferably at an elevated temperature) and bulked using a jet of heated turbulent fluid. The thusly bulked filaments are then dyed.

Abstract: In the case of a false-twisting nozzle for pneumatic false-twist spinning having a nozzle body formed of one or several segments, it is provided that, for the reduction of the cross-section of the outlet opening of the blow duct, at least one part of its interior wall is provided with a coating.

Abstract: A method and apparatus for transporting a wound hollow yarn package having a loose yarn end from a yarn processing machine and, preferably, between yarn processing machines, while maintaining the loose yarn end in defined and fixed positions. The yarn package is gripped in the yarn processing machine by inserting a hollow gripper device into one end of the hollow yarn package and the loose yarn end is pneumatically positioned in the hollow gripper device. The yarn package is removed from the yarn processing machine and placed on a hollow pin of a transporting mechanism by the gripper device and the loose yarn end is pneumatically removed from the gripper device and positioned in the hollow pin of the transporting mechanism. The gripper device is then removed and the yarn package is transported, preferably to a second yarn processing machine.

Abstract: An apparatus for splicing the tow ends of man-made fiber tows, including a pair of jet carriers having oppositely directed pairs of jets to which compressed air can be supplied, whereby the connection of tow ends introduced between the pair of jet carriers is effected by aerodynamic turbulence. In order to enable an automatic splicing procedure, the pair of jet carriers is disposed on a jet carrier transport device that is movable in a direction transverse to the longitudinal orientation of the fiber tows. In addition, a cutting mechanism is provided that is movable parallel to the jet carrier transport device and cuts off projecting fiber ends after completion of splicing. A holding device having holders fixes the tow ends in position.

Abstract: A yarn end finding apparatus for a spinning bobbin comprising a lifting member capable of moving along the axis of a bobbin located at a predetermined position, a sensor provided on the lifting member, and an auxiliary yarn end finding member which acts on a chase of the bobbin when the sensor detects the end of the yarn layer of the bobbin.

Abstract: This invention relates to a process for combining a low melting binder fiber with a continuous filament base yarn to form a composite yarn having good bulk and a high level of interlace. More particularly, the process involves bulking a continuous filament yarn, combining it with the low-melting binder fiber, interlacing the combined yarn, and then fixing the interlace.

Abstract: In the case of a process for producing packages used as feeding packages for twisting, it is provided that two prestrengthened yarn components are wound up side-by-side as a double yarn. If one yarn component breaks, the winding-up is interrupted. The unbroken yarn component is gripped and held ready at a given point so that it may be taken up for a piecing and wound off the partially wound spool, while taking along the broken yarn component from the partially wound spool.

Abstract: A composite yarn comprising at least two yarn bundles plied together in alternating S and Z composite directions of twist separated by composite nodes of zero twist. At least one of the yarn bundles is a multi-strand bundle comprising at least two yarn strands. The strands of the bundles are twisted and the strands of the multi-strand bundle are plied together in alternating S and Z bundle directions of twist separated by bundle nodes of zero twist. The composite nodes and the bundle nodes coincide and the composite direction of twist is opposite to said bundle direction of twist between nodes. A method of plying filaments to obtain the composite yarn and apparatus for doing so are also disclosed.

Abstract: For continuously crimping thermoplastic filaments, a filament bundle is blown by a jet nozzle into a stuffing chamber of a texturing wheel to produce a crimped filament bundle in the stuffing chamber. The stuffing chamber has a receiving zone, a treatment zone and a delivery zone. The filament bundle is subjected to a texturing or crimping treatment in the receiving zone and, depending upon the fiber material to be processed, undergoes a heating or cooling treatment in the treatment zone. The heating or cooling treatment is accomplished by a blowing agent which blows a gaseous medium into the stuffing chamber. At the delivery zone, the crimped filament bundle is taken-off or lifted-out of the stuffing chamber by fiber bundle-lifting means and moved towards a suction drum receiving the filament bundle.

Abstract: Potential bulky polyester associated bundles or yarns for woven or knitted fabric include spontaneously heat extensible multi-filament A and heat shrinkable multi-filament B. The associated bundles are interlaced at 20-100 interlaces/m. For multi-filament A, the following physical properties apply: <3 denier as a single bundle; 20-80% denier ratio content in associated bundles, wet shrinkage at 100.degree. C. (SHW (A))=0-5%, dry shrinkage at 160.degree. C. (SHD (A))=-15-0%. The properties pertaining to multi-filament B include: fracture tenacity>4 g/denier, denier ratio of 80-29% content in associated bundles, SHW (B)>5-60%. Additionally, SHD (B)-SHD(A)>5%. The invention also relates to processes for forming the bundles and for weaving the bundles into fabric.

Abstract: In a process and an arrangement for the piecing of a double yarn after a yarn breakage at a spinning unit of a spinning machine, which forms a double yarn from two prestrengthened yarns, which is wound onto a spool package, it is provided that, for a piecing, a newly spun double yarn is connected by means of splicing with an end of the double yarn withdrawn from the spool package, in which case, before the splicing, both double yarns are prestrengthened by being provided with a twist.

Abstract: A reserve feed stock is pieced with a production feed stock, particularly a roving of a ring spinning machine. The piecing operation can be accomplished by applying twist to predetermine portions of the reserve and production feed stocks and then releasing such applied twist upon separation of the reserve and production feed stocks at predeterminate locations thereof.

Abstract: In the case of an air nozzle for pneumatic false-twist spinning having several parts arranged behind one another in moving direction of the yarn, it is provided that the part which is arranged behind the part containing the compressed-air ducts, in moving direction of the yarn, is made of a harder, more wear-resistant material and has a smaller diameter than the preceding part.

Abstract: A splicing head for a compressed air yarn splicing device has a splicing chamber with a yarn insertion slot opening thereinto and an arrangement by which a pair of compressed air entrance openings may be adjustabley located at differing dispositions with respect to the splicing chamber so that differing splicing air vortices may be selectively generated within the splicing chamber as required for differing yarn characteristics. A common compressed air supply with a single control valve is provided for supplying compressed splicing air to each entrance opening. In one embodiment, a plurality of entrance openings are formed in the splicing head and a shiftable slide plate having a pair of compatible openings enables selective communication between the compressed air supply and the splicing chamber through alternate pairs of the plural entrance openings.

Abstract: A winding apparatus which includes a plurality of yarn supply package station for holding a plurality of packages of multifilament yarn, a process station for receiving yarns from the yarn supply packages and processing the yarn, and a take-up package. The improvement comprises a yarn randomizing device positioned downstream from the supply packages and upstream from the processing station for intermixing filaments within a single yarn and among the plurality of yarns in a random and irregular manner before delivery of the yarns to the processing station thereby preventing patterning in the processed yarn. In one embodiment the randomizing device comprises a air vortex and in another, a rotating beater.