Abstract: A frictional false twister is disclosed. The twister has a plurality of rotating friction plates located between the nip of the front rollers and the yarn guide. The friction plates are staggeringly arranged for rubbing a twisted yarn. The spinning direction of the twisted yarn is opposite to the rotating direction of the friction plates. Through the action of the frictional false twister, the twist of the yarn between the false twisting device to the front nip can be increased, shortening the twisting triangle height, and increasing the spinning strength. As the yarn and the outer surface of the friction plate make relative sliding and rubbing, the friction damping force correspondingly reduces the spinning tension in the twisting triangle.

Abstract: Disclosed is a continuous carbon fiber/thermoplastic resin fiber composite yarn and a method for manufacturing the same, wherein the carbon fiber composite yarn provides excellent mechanical properties, is light in weight, moldable, and has excellent impregnating ability. In particular, the composite yarn is provided with these superior properties by including a continuous carbon fiber having excellent mechanical properties, a thermoplastic resin fiber, and the like, and by using a false twist processing machine or a solution bath, and the like in order to manufacture the composite yarn.

Abstract: There is put forward a method for texturing thermoplastic yarns with which the thread before the provision of texture is brought to the necessary texturing temperature (T2) and during the actual texturing provision is cooled to a setting temperature (T23). The heating to the texturing temperature (T2) is effected in two steps. The actual texturing line (24) is provided with an active cooling, by which means the yarn is actively cooled to a setting temperature.

Abstract: A cut-resistant yarn formed of a multifilament yarn, each filament of a polyester material having ceramic platelets embedded to provide a yarn having cut resistance, and the yarn having a friction-textured false twist inserted therein to provide a surface exhibiting comfort characteristics rendering the yarn suitable for use in apparel. An embodiment of the method of forming a cut-resistant yarn according to the invention includes the steps of providing a multifilament. The filament is a polyester material having ceramic platelets embedded to provide a yarn having cut-resistance. False twist by the friction-texturing method is inserted to provide a surface exhibiting comfort characteristics rendering the yarn suitable for use in apparel.

Abstract: A yarn texturing machine for texturing a plurality of thermoplastic yarns, each in a processing station. The yarns are guided and advanced in each processing station by a plurality of feed systems. One of the feed systems is mounted on a movable slide, and the slide is guided by means of a slide element along a guide rail and moved by means of a linear drive between a servicing position and an operating position. For a transfer of force, the slide element connects to a drive via a cable line extending along the guide rail.

Abstract: A method for false twist texturing a synthetic yarn, as well as the thus-produced crimped yarn, wherein a false twist is produced on the yarn at a speed of a false twist unit, which exceeds 2.2 times of the yarn speed and is above a saturation limit for absorbing a false twist in the yarn. The overtwisted yarn is set in the false twist zone at a temperature higher than 200° C. In proportion with the advancing speed, the withdrawal speed does not exceed 1.4 times the advancing speed, and is below 1,000 m/min. With that, a false twist textured crimped yarn is produced, which has large and small cross sections with curls and bows, which alternate with one another and have opposite directions of twist.

Abstract: It is an object of the present invention to provide a hairiness controlling device that can start, simultaneously with the start of spun yarn running, stabilizing a spun yarn run through disks. According to the present invention, a rotation speed of each disk 6 is varied depending on a running speed of a spun yarn Y run as a drive drum D rotates, thereby setting the tension of the spun yarn Y at an appropriate value when the spun yarn starts to run.

Abstract: To provide a tension control system in a false twist texturing machine for producing a doubled yarn wherein the target tension values or allowable ranges of filament yarns y1 and y2 prior to doubling can be individually set for each filament yarn and wherein based on the results of the detection of the tension of the filament yarn prior to doubling, each false twister T for the corresponding filament yarn is individually and independently controlled in such a way that the tension of each filament yarn has the set target tension value or falls within the set allowable tension range. A target tension value and an allowable tension range can be individually set for each filament yarn prior to doubling so as to accommodate the yarn's material, thickness, and structure, and the false twister can be individually and independently controlled based on the results of the detection of the tension of each filament yarn prior to doubling.

Abstract: A rotator assembly is provided comprising two disc-shaped base members, each defining central bores therethrough and a disc-shaped middle section defining a central opening therethrough and having a tubular exterior, the middle section matingly fitting between the base members with the tubular exterior extending beyond and overlapping outer edges of the base members while the base members occupy the central opening of the middle section.

Abstract: Described is a new one-step process for the manufacture of twisted nylon yarn, which simultaneously spins, draws and false-twists a nylon yarn. The process operates with a spinning speed of more than 3000 m/min.

Abstract: A friction false twisting unit having three spindles and respective plurality of disks on each spindle. One spindle and its disks are on a swingable housing which swings out with respect to a stationary housing holding the other two spindles. A lower thread guide is beneath the lowest disk on the first spindle on the swingable housing. The lower thread guide eyelet opening opens toward the front spindle on the stationary housing. The lowest disk on that spindle is a thread guide disk, not a texturing disk. An upper stationary thread guide above the disks has an eyelet opening toward the rear of the housing and toward a respective lateral side of the housing depending upon whether an S twist or a Z twist is being applied to the thread, and the center of the eyelet opening of the upper thread guide is off the center of the triangle defined by the spindles.

Abstract: A device for the false twisting of synthetic threads is provided with a plurality of friction rotors, each constructed of a reusable central bore and an expendable composite ring that is form-fitted and force-fitted to said base so as to be conveniently removable therefrom for replacement when the friction coating along the outer edge of the ring has worn.

Abstract: A twisting member of a ringless spinning apparatus comprises a cylindrical ousing with blades on its peripheral side surface. Secured on the blades is a first disc with an eccentric passage extending therethrough for the advancement of fibres, this disc acting as one gripping element of a device for gripping the fibres. The other gripping element is in the form of a second disc with an axial passage which is coaxially mounted on one end of a spring-biased sleeve in a position facing the first disc with the eccentrically extending passage and defining a gap with this first disc. The sleeve is coaxially accommodated in the housing.

Abstract: A yarn false twisting apparatus is disclosed which comprises a pair of rotating circular discs having cooperating friction surfaces for engaging a running yarn at a twisting zone. The drive system for the discs includes a drive component which includes a drive whorl and a coaxial drive pulley, and which is adapted to engage two separate drive belts. The drive component includes a unitary tubular drive member, a central shaft extending through and fixed to the drive member, a sleeve mounted to the frame of the apparatus and extending between the shaft and drive member, and bearings positioned between the shaft and sleeve. Also, the drive component is mounted to the frame by an arrangement which permits adjustment of the rotational axis of the drive whorl about a second axis which perpendicularly intersects the rotational axis, so as to permit accurate alignment of the rotational axis of the whorl along a direction perpendicular to the running direction of the tangential drive belt.

Abstract: The friction ring of a rotor or disk for a friction false-twisting device for synthetic threads is disposed on the circumference of the respective rotor. The friction ring is comprised of elastic material and is capable of lifting off the rotor upon high rotor rotation speed. To prevent lift-off, at least one annular element is disposed to the ring. In one embodiment, the annular element is rigid and is disposed in a groove around the periphery of the ring. In another embodiment, rigid annular elements are disposed in respective grooves in one or both side faces of the ring. In still another embodiment, the annular element is disposed inside the ring and may even comprise an initially tensioned spring, rather than a rigid annular element.

Abstract: A yarn false twisting apparatus is disclosed which comprises a flexible disc mounted for rotation with a cooperating rigid disc to define a twisting zone therebetween. A pressure applying member is positioned adjacent the back face of the flexible disc for biasing the disc toward the rigid disc locally at the twisting zone so as to firmly engage the yarn passing through the twisting zone. The flexible disc comprises a hub portion disposed adjacent the center of the disc, an annular ring disposed concentrically about the hub portion and including a yarn engaging friction surface on one face thereof, and a distinct and highly flexible junction portion joining the hub portion and annular ring. The highly flexible junction portion permits the annular ring to readily flex in the lateral direction, to thereby permit the deflecting force to be minimized, while still permitting the rotating torque to be transmitted to the annular ring without significant circumferential deformation.

Abstract: A friction false-twisting unit has three upstanding parallel shafts supported on a base plate. Each shaft carries a plurality of friction disks and the disks are overlapping and interleaved for applying a false twist to filament yarn drawn through the array of disks where they overlap. To damp the oscillation of the entire false twisting unit, it is fastened to the machine bed through interposed damping elements. There is a holding mandrel on the base plate which passes through a guide sleeve. The guide sleeve is, in turn, attached to the mount via the damping elements. With the false-twisting unit absent, the damping elements tilt the guide sleeve and when the unit is in place, its weight in use returns the guide sleeve to a correct orientation, so that the plane of the side of the drive whorl on one of the shafts is parallel to the plane of the tangential drive belt for that shaft where that belt passes the drive whorl.

Abstract: Two offset and opposite rotating members have annular shoulders which are surrounded by frontal surfaces that are being at right angles to the axis of rotation of the members and partially opposed to each other. A first one of the members is mounted on a rotation drive shaft, and is made up of two faced disks, while the other one rests with its own shoulders on the shoulders of the first member and rests also on another point for mutual positioning of the members. Material to be processed may be easily inserted sideways between the two opposite members.

Abstract: A bundle of textile fibres 1, e.g. a sliver or roving supplied by a drafting apparatus 2, is passed over a frictional surface 7 provided by a rotary disc 6 so that the surface 7 moves transversely to the path of movement of the bundle 1. The resultant twist is prevented from running back into the drafting apparatus 2 by exit rollers 5, and from running forward to take-up bobbin 16 by draw-off rollers 13, 14. The resultant product is a fancy thread containing a false twist but on which the sum total of the residual twist is substantially zero. Thread 17 is used for threading-up the apparatus, but such a thread may also be fed to the disc 6 to form a composite with the bundle 1. Modifications provide for two or more bundles to be supplied simultaneously to the same disc 6 with one or all contacting the roughened surface 7 and for one or more bundles to be treated in successive discs 6 and combined at one of the successive discs 6.

Abstract: Disclosed are processes and articles for composite electroless coatings comprising at least two distinct layers, the first layer comprising a metal and/or a metal alloy plus particulate matter and the second layer comprising a metal and/or a metal alloy and being substantially free of particulate matter.

Abstract: Disclosed are processes and articles for composite electroless coatings comprising at least two distinct layers, the first layer comprising a metal and/or a metal alloy plus particulate matter and the second layer comprising a metal and/or a metal alloy and being substantially free of particulate matter.

Abstract: A friction rotor for false-twisting threads is provided with a coating of particles which are harder than the material from which the rotor has been made to provide a surface of harder particles which contact the thread as it passes over the rotor for false-twisting.

Abstract: A method and apparatus is provided for producing a synthetic multifilament yarn having appearance, bulk and hand characteristics of conventional spun yarns of staple fibers while retaining strength characteristics of continuous filament yarns. The multifilament yarn is air jet textured to form loops, bows, coils and the like in at least the surface filaments thereof and at least some of these loops, bows, coils and the like only in the surface filaments are parted while the interior or core filaments remain substantially intact to form a yarn having free filament or fiber ends projecting from a substantially continuous filament core. The interior or core filaments are shielded or protected from being parted by false twisting the yarn (without heat setting the twist therein) to provide a substantially closed form with the interior or core filaments surrounded by the surface filaments and by parting the surface filaments while the yarn has twist therein.

Abstract: The present invention concerns a false twist apparatus (1) with friction discs (3) arranged at mutual distances on a shaft (2) and with thread guides (4) extending to between the discs (3), for imparting twist to a thread (11) guided friction-contactingly over the friction discs by the thread guides. The thread guides in this arrangement are provided with a concave curvature, as seen with respect to the direction of movement of the twist imparting surface (F).

Abstract: An improved false twist machine employing a friction disc arrangement which provides high twist in the multi-filament yarn on the entering side and increased yarn feeding rate on the outlet side to reduce the tension of the exiting yarn to lessen the number of filament breaks. The friction disc arrangement has discs of increased thickness to diameter ratio on the entering side when compared to the exit side, to provide increased yarn angle to accomplish the desired high twist. The reduced thickness to diameter ratio on the exit side increases yarn forwarding action, thus reducing the outlet tension.

Abstract: In a false twisting apparatus in which the yarn to be twisted passes between parallel, rotating shafts carrying axially spaced friction disks which radially overlap disks on the other shafts, the yarn-engaging circumferential faces of the disks are surfaces of rotation about the shaft axes and arcuately connect respective radially extending, axially spaced end faces of the disks, each face having a yarn feed region and a yarn delivery region, the regions being annular about the axis of rotation and axially juxtaposed, the yarn feed region consisting essentially of aluminum, zirconium, or titanium oxide and having a surface roughness greater than the surface roughness of the yarn delivery region.

Abstract: A friction disc for use in false twisting has a convex, yarn contacting, peripheral surface and a recess on one or both faces adjacent the periphery, there being a sharp edge between the peripheral surface and recess.