Abstract: Individual differently colored or colorable feed filament ends are withdrawn from respective creel-mounted packages and passed through a separation guide. The separation guide serves to "normalize" the filament end-to-end positions and tensions. That is, the separation guide will cause the individual feed ends to be in specific predetermined positions relative to the other feed ends regardless of the position of the package on the creel. In addition, the separation guide will effectively cause a short length of each feed end to be parallel to, and separated by a substantially uniform distance from, corresponding lengths of the other feed ends. This parallel alignment of individual end lengths and the substantially uniform filament end-to-end positioning thereby imparts substantially uniform tensions on the feed ends while substantially maintaining their respective positions in the combined yarn product relative to one another.

Abstract: A heating apparatus for an advancing thermoplastic yarn, which is guided along a heated surface over heating ridges. Essential is that the heat flow to the yarn is variable, in particular by a change in height, a change in width of the heating ridges, and/or a change in the contact length with the yarn. In this connection, the heating ridges may be adjustable, and/or the path of the yarn may be made variable by yarn guides.

Abstract: A method of controlling the manufacture of false twist textured yarn characterised by adjusting non-isothermally in a closed loop the heat flux taken up by the yarn in tension to a specific yarn dyeability. Adjustment can be achieved by feeding back the output of a direct-acting yarn texture sensor to control at least one of yarn heater heat supply, yarn twist speed and yarn feed speed. The sensor is arranged to sense at least one of textured yarn speed, yarn temperature, yarn bulk and yarn tension. A very compact texturing line is possible when the control method is applied.

Abstract: An apparatus for heating an advancing yarn is disclosed, which comprises an elongate heater body having a U-shaped channel accommodating a plurality of yarn guides. The yarn guides are configured and positioned such that the yarn advancing through the heating apparatus is deflected along a non-linear path of travel which includes several straight line segments which are closely adjacent and parallel to each of the side walls of the channel. The non-linear path effectively increases the yarn length in the heating apparatus, thereby facilitating high speed operation, and without unduly increasing the frictional resistance of the apparatus on the yarn.

Abstract: An apparatus is provided for crimping and heat setting a filament or a tow of filaments and to provide fine filaments. The apparatus has at least one heating zone with means for heating a filament or a tow of filaments in an inert and/or oxidizing atmosphere. In the heating zone is a pair of horizontally movable mating conveying means having a multiplicity of protrusions for imparting a crimp to said filament or tow.

Abstract: An apparatus for heating an advancing thermoplastic yarn led over heating ridges along a heated surface. An essential feature of the invention is that the heating ridges can be maintained at a temperature as high as that of the heating surface, in particular at a temperature sufficient for ensuring a self-cleaning effect, without damaging the yarn. If required, the heat flow on the yarn may also be regulated by adjusting the height of the heating ridges and/or by modifying the length of contact with the yarn.

Abstract: A yarn heating apparatus, interposed between a false twist apparatus imparting twist to a synthetic fiber yarn and a yarn feed apparatus feeding the synthetic fiber yarn to the false twist apparatus, is designed to heat the synthetic fiber yarn traveling on a yarn travel path extending from the yarn feed apparatus to the false twist apparatus. The yarn travel path includes a twist existence path section through which the twist imparted to the synthetic fiber yarn extends continuously. The yarn heating apparatus comprises a yarn heat member unit formed with a yarn heat channel defining in part the twist existence path section of the yarn travel path for heating the synthetic fiber yarn passing through the yarn heat channel, and a plurality of yarn guide members located in the yarn heat channel of the yarn heat member unit in spaced relationship to one another for guiding the synthetic fiber yarn through the yarn heat channel of the yarn heat member unit.

Abstract: There is disclosed a method for false twist texturing comprising the steps of supplying a yarn hot (11) to a twist trap (12) upstream of a false twist device (13) instead of supplying heat to the yarn intermediate the twist trap and the false twist device.

Abstract: A heating apparatus for false twisting of synthetic fiber is desired to be a non-contact type high-temperature heating apparatus from the viewpoints of efficiency and energy saving. However, in this case, it is necessary to process a long metal bar to form a long passage through which a filament passes and accommodate a long heating member in the metal bar. This processing is very difficult to do. To solve this problem, this invention has been proposed. A main body is made of metal so that the main body is constructed in the form of a tube or it is tubular and bent relative to the length of the main body. End walls are formed on both ends of the main body. In the main body, passages through which filaments pass are provided along the length of the main body and guides are provided. Further, heat-conductive powder or grain is contained in the main body and additionally, a heating member is provided therein.

Abstract: A cooling apparatus and method for cooling an advancing yarn, which includes an elongate cooling rail along which the advancing yarn is guided. At each end of the cooling rail, the yarn and the cooling rail are reciprocated relative to each other in a direction transverse to the direction of the advancing yarn, so that the yarn sweeps over the cooling surface of the cooling rail, thus facilitating the removal of a possibly developing condensate.

Abstract: In a textile yarn texturing machine, a cooling arrangement for the heated false-twisted yarn is provided by a tube having a guide at the inlet end and a guide on the diametrically opposed side of the tube at the outlet end to guide the yarn in a helical path around the outer surface of the tube. The yarn makes one-half turn around the tube during its travel from the inlet end to the outlet end. Holes on the yarn path in the first part of the tube are connected to a suction device for fume extraction, and a cooling fluid may be passed through the tube to enhance cooling. The tube may form the second part of the cooling arrangement and is preferably inclined downwardly from a horizontally disposed first part towards the false twist device. The cooling arrangement or at least the first part is aligned with the preferably horizontally disposed heater located above the operator's aisle of the machine.

Abstract: A heating device for heating an advancing yarn, which has a groove in which the yarn advances along a zigzag line. To advance the yarn in the groove, yarn guides are provided, which are arranged spaced apart from each other on a common carrier so as to form a unitary structural unit. The structural unit is inserted on the bottom of the groove, and rests against the side walls of the groove. The yarn guides are configured as pins.

Abstract: A texturing textile machine has at least one heating oven for the yarn (20) and downstream thereof a relevant texturing or false-twist spindle (22). There is provided between the yarn heating oven (20) and the relevant texturing spindle (22) yarn cooling elements (28,30) for the forced cooling of the yarn.

Abstract: A yarn heating apparatus for use in a yarn false twisting machine, which has an axial channel in which the yarn advances along a zigzagged path. To guide the yarn in the axial channel, yarn guides are provided, which are shaped as spaced apart protuberances on two metal strips. The metal strips are supported in contact with the side walls of the axial channel.

Abstract: An elongate heater for heating an advancing synthetic filament yarn with reduced friction. The yarn is advanced in contact with a generally flat contact surface of the elongate heater, with yarn guides being arranged along the heater in spaced apart relationship, and so as to guide the yarn in a zigzagged path with a predetermined amplitude over the contact surface. The yarn guides may be constructed as cylinders, which extend perpendicularly to the contact surface of the heater.

Abstract: A yarn heating apparatus for use in a false twist crimping machine wherein the advancing yarn is guided along a laterally zigzagged path through the apparatus by means of yarn guides which are alternately arranged on opposite sides of the yarn. The yarn guides are of cylindrical configuration so as to present broadly curved contact surfaces in engagement with the yarn.

Abstract: The friction texturized polyester filament yarn has a titer of 400 to 600 dtex and a crimpability of at least 45% and can be provided with at least 60 slubs/m. The method of making this friction texturized polyester filament yarn comprises texturizing a flat yarn with a titer of 400 to 600 dtex at a rate of at least 350 m/min and a yarn tension ratio, F2/F1, less than one via a squeezing twister. A set yarn can be made from the friction texturized polyester yarn with the titer of 400 to 600 dtex by heating.

Abstract: A composite yarn comprising a spandex core yarn and a thermoplastic wrapping yarn in which both yarns are free to extend and contract freely one relative to the other while retaining sufficient cohesion to prevent their separation. The thermoplastics wrapping yarn is polyamide in a flat continuous filament. The wrapping yarn is wrapped in a series of alternating S and Z twists around the spandex core yarn, loops of the wrapping yarn projecting laterally as at positions where a change in the direction of twist occurs.

Abstract: A method for increasing the dyeability of polyester yarn comprising heating the partially oriented yarn to a temperature between its crystallization temperature and its melting point while preventing the partially oriented yarn from shrinking, and immediately thereafter draw texturizing the partially oriented yarn to a desired draw ratio and texturization.

Abstract: A composite crimped yarn comprising: at least two kinds of multifilament yarns, one of them being comprised of a crimped conjugate multifilament yarn comprising two kinds of polyester polymers different from each other in the heat shrinkability and positioned as a major component of the inner layer of the composite crimped yarn, the other of them being comprised of a crimped multifilament yarn of a single synthetic polymer and positioned as a major component in the outer layer of the composite crimped yarn. In the above, the length of the crimped multifilament yarn is 5 to 35% larger than that of the crimped conjugate multifilament yarn, part of the crimped multifilament yarn being migrated to the crimped conjugate multifilament yarn disposed in the inner layer and part of the crimped conjugate multifilament yarn being migrated to the crimped multifilament yarn disposed in the outer layer.

Abstract: A method and apparatus for monitoring the quality of the yarn processed on a false twist texturing machine is disclosed, and which includes sensing the tension of the advancing yarn at a location immediately downstream of the false twist unit, and determining the coefficient of variation of the sensed tension. An error signal is generated whenever the coefficient of variation exceeds a predetermined upper limit and whenever the coefficient of variation drops below a predetermined lower limit. Also, an alarm signal is generated whenever the error signal exceeds the predetermined upper limit for a predetermined time, and whenever the error signal drops below the predetermined lower limit for a predetermined time, and the alarm signals are counted so as to provide an indication of the quality of the yarn.

Abstract: A cooling apparatus of a high speed false texturing machine in which a so-called surging phenomenon is prevented, yarn breakages are not increased, unevenness in yarn dyeing does not occur, and deterioration of crimp characteristics in obtained textured yarn is prevented. A false texturing machine includes a false twisting device (6) for imparting twists to a yarn (2), a heating apparatus (3), disposed upstream from the false twisting device (6), for heat setting twists that run back along the yarn (2), and a cooling apparatus (4, 5), disposed between the heating apparatus (3) and the false twisting device (5), for cooling the yarn. The cooling apparatus (4) has a plurality of partial cooling plates (8). A yarn pressing member (9) serves to insert the yarn (2) into a space between the adjacent partial cooling plates (8) beyond a common contacting line of the adjacent partial cooling plates (8).

Abstract: In a drawing false-twisting method, which draws a twisted yarn, heat-sets the drawn and twisted yarn, cools the yarn by making the yarn travel in contact with the surface of the guide groove of a cooling plate and untwists the yarn to obtain a textured bulk yarn, the yarn is moved laterally to spread the oil transferred from the yarn to the surface of the guide groove.

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 heater body has a total length between 0.8 and 1.2 m, the heater body and heating member are divided into two pieces from upstream side to downstream side of the heat treating apparatus in ratio of length between 1:3 and 1:1.5, the divided upstream heating member (12) is able to heat the upstream heater body (11) at a temperature higher than 370.degree. C., and the downstream heating member (22) is to heat the downstream heater body (21) at a temperature of between 200.degree. and 320.degree. C. or higher than 370.degree. C., the upstream heater body has yarn guides (15) disposed at a longitudinal pitch of at most 30 mm, and the downstream heater body has yarn guides (24) disposed at a longitudinal pitch between 80 and 120 mm.

Abstract: Method and apparatus for high speed false twist texturing of yarns, which makes it possible to perform false twist texturing smoothly at a yarn speed of 1,000 m/min or higher. The number of false-twists inserted per meter of yarn is determined by Equation 1, while the yarn is false-twisted at a yarn speed satisfying Equation 2 and at a short yarn path length satisfying Equation 3: ##EQU1## wherein T is the number of false-twists inserted per meter of yarn, V is the yarn speed of false twist texturing (m/sec), L is the yarn path length from teed rollers to a false twister (m), and A is a cross sectional area of the yarn (m.sup.2), which is obtained by dividing the denier of the yarn by the density of the yarn. The false-twist texturing apparatus includes feed rollers feeding yarn to a false-twisting zone, a heating device bringing the yarn into direct contact with steam, a cooling device bringing the yarn into direct contact with water, a false twister and delivery rollers, in this order.

Abstract: A draw texturing machine comprises a first heater for heating a yarn, a false twisting device for imparting twists to the yarn, and a cooling plate, disposed between the first heater and the false twisting device, for cooling the yarn which has been heated by the first heater and for inhibiting vibration of the yarn so as to allow the yarn to run in a stable manner. The cooling plate is provided with a yarn threading groove member having a bottom portion with which the yarn runs in contact and wall portions connected to the bottom portion to form a concave, downwardly directed opening. The wall portions of the yarn threading groove member are provided with a plurality of holes, and the bottom portion of the yarn threading groove member is provided with no holes.

Abstract: Process allowing the cooling of a yarn (2) in motion at the exit from a heater (5) before it passes through a treatment member such as a false twist spindle (7), consisting in passing the yarn inside a tube (10) through which a current of cool air or other gaseous product passes, the current of air being directed in a direction opposite to the direction of advance of the yarn. It is characterized in that during this cooling phase, the yarn is held in contact with a support or guide surface arranged coaxially inside the tube (10) through which the current of air which flows in the space contained between the external tube (10) and the guide surface.

Abstract: Machine for carrying out twisting and an additional texturing treatment continuously on a man-made yarn, wherein false-twist texturing treatment elements (6) are arranged in the central part (2) of the stand of the machine, and the feeding elements (7, 10) for feeding the yarn consist of delivery devices of the positive type. A double-twist spindle (3) and the winding assembly (5) are arranged one above the other and are laterally offset. The guidance of the yarn (5) at the exit of the double-twist spindle (3), in order to convey it into the texturing treatment zone (6), and at the exit of said texturing zone, in order to convey it to the winding members (11), is obtained by an assembly (13) comprising, for each work station, a pair of yarn guides (15, 16) supported at the same level on the stand of the machine substantially at mid-height. One guide (15) is arranged in the extension of the double-twist spindle (3), and the other guide (16) is offset laterally outwardly from the one guide (15).

Abstract: A friction-textured elastic yarn is prepared by twisting a single-component multifilament melt-spinnable polymer yarn having an initial modulus of 80 to 150 cN/tex and a melting point of at least 200.degree. C. at a speed of at least 200 m/min, the thus twisted yarn is heat-set at 160.degree. to 190.degree. C. to produce a fixated yarn, and the fixated yarn is friction-textured at a pretension of 0.5 to 3.0 cN/tex.

Abstract: Method to provide a novel false twisted slub yarn by combining a core yarn and an effect yarn in a fluid tangling zone. The linear velocity of the effect yarn is raised to allow slubs to be produced in the combined yarn in an air jet apparatus. The slub yarn is then run through a commingling air jet after formation of the slubs to commingle the lean portion of the yarn between the slubs formed to prevent a strip back of the yarn during weaving and/or knitting.

Abstract: A yarn false twist crimping apparatus includes a curved heating plate which faces away from the service aisle. A cover is positioned to overlie the upper surface of the heating plate, and the cover is mounted for movement between a closed position covering the heating plate and an open position wherein the heating plate is uncovered. To initially thread-up a yarn, the cover is closed and the yarn is guided to an intermediate position along the outside of the cover. The advance of the yarn is then commenced, and the cover is then momentarily opened so that the yarn drops onto the heating plate.

Abstract: A yarn heating apparatus which is adapted for use in a yarn false twisting machine. The heating apparatus includes an elongate heating surface, and a plurality of yarn guide members mounted in a longitudinally spaced-apart arrangement along the length of the heating surface, for guiding an advancing yarn therealong in a laterally zigzagged path of travel which is adjacent but spaced from the heating surface.

Abstract: A yarn false twist texturing process and apparatus wherein the tension of the advancing yarn is monitored. The resulting signal is processed through a time filter to produce a time averaged signal, and the time averaged signal is compared with a set point signal to produce an adjusting signal which acts to control the false twisting unit so as to provide a substantially constant tension. The adjusting signal is also used to detect deficiencies of the false twisting process which disturb the uniformity of the texturing process.

Abstract: A false twisting method and device for twisting a yarn which runs under a predetermined tension includes an arrangement wherein the yarn is wound about a member such as a cylindrical member positioned approximately at the halfway point of the running of the yarn, and a yarn downstream of the wound member and a yarn upstream of the wound member intersect each other in a contacted state to provide a twist in the yarn.

Abstract: A yarn false twister in which an endless belt an a first rotary member are disposed across each other to constitute a nip point at which a yarn is twisted, and a second rotary member, on which the yarn is wound after the nipping thereof so that the upstream and downstream portions of the wound yarn cross in contact with each other, is provided coaxially with the first rotary member so that the second rotary member can be rotated independently of the first rotary member.

Abstract: A false twist processing apparatus for applying a predetermined processing to chemical fiber filament yarns supplied from a yarn supply device by passing it through treating devices such as a yarn feed device provided on a frame, a heater, a false twisting member, a take-up device, and the like, wherein the frame is composed of at least two support columns which are independent from each other and stood upright on a floor surface, and the treating devices are mounted on the support columns so that a yarn processing route is formed between the two support columns.

Abstract: A method of monitoring yarn quality in a yarn texturing process comprises measuring the velocity of the travelling yarn at two locations and comparing the measured velocities. At a first location the yarn tension is sufficient to draw out the crimp and at a second location the tension is lower such that the crimp is developed. Apparatus for performing this method comprises a measuring device to measure the peripheral speed of a driving roller which is part of a nip-feed device serving to feed a crimped yarn at the first location from a false twist device to a second heater of a false twist texturing machine. At the second location between the second heater and a third feed device of the machine is a second velocity measuring device which comprises an inlet tube, an outlet tube and two discs of brass which form spaced measuring stations spaced by an insulating body.

Abstract: A false twisting apparatus comprising: a pair of first feed rollers for feeding a yarn to be false twisted; a pair of second feed rollers for feeding a false-twisted yarn; a first heating means and a twisting means whcih are provided between the first and second feed rollers in order to false twist the yarn fed by the first feed rollers; wherein first and second stabilizing means for cooling and stabilizing the yarn heated by the first heating means are arranged between the first heating means and the twisting means in the recited order; the first stabilizing means being arranged substantially aligned with the first heating means; an interior angle defined between the first and second stabilizing means and inside the apparatus being more than 90.degree.; and the length of the second stabilizing means being shorter than that of the first stabilizing means.

Abstract: A continuous multifilament crimped polyamide or polypropylene yarn suitable for use in loop pile carpeting and the process for making the yarn including feeding the yarn at different tensions and then treating the yarn with saturated steam is disclosed.

Abstract: A ply-twisted crimped continuous filament yarn having at least 40 twist reversals per meter and particularly suited for freize style carpets and the process for making the yarn is disclosed.

Abstract: In an arrangement for texturing threads used in producing yarn, the threads are preheated by passing through channels of a contact heater before passing through the known yarn texturing, e.g. false twisting units. To increase thread and yarn production with a particular contact heater, two threads are passed through a respective heating channel in the heater, rather than one thread. To accomplish this, one thread has a right hand, regular or Z-twist or turn and the other has a left hand, reverse or S-twist or turn, and their crimp causes them to avoid each other at opposite sides of the channel, and not to undesirably contact. A respective texturing unit is supplied for each of the threads that has been heated.

Abstract: A false twist apparatus, for processing primarily fine denier yarns at low level twist levels with consistency and good process control, comprises a roller mounted for rotation about its longitudinal axis and input and output guides, to guide the yarn in a helical path around the roller, mounted on a guide support extending adjacent the roller. One of the guides is positionally adjustable on the support in a direction parallel with the roller axis to alter the helix angle of the yarn around the roller and the twist level. For S and Z twist, two drive spindles are provided symmetrically disposed on opposed sides of the support, the roller being secured on the appropriate spindle and the output guide being moved to the appropriate side of the support.

Abstract: A texturizing machine for false-twist crimping of synthetic yarns having a plurality of work stations at each of which yarn is drawn by feed rolls from supply bobbins and guided successively through a heating device, a cooling device and a texturizing unit to a group of superjacent bobbin winding units, with the bobbin winding unit groups being arranged in longitudinal succession along the length of the machine. A pair of opposed spaced longitudinaly extending support frames define an operator service passageway therebetween. The heating devices, cooling devices and texturizing units are disposed adjacent the passageway with the yarn being guided over the passageway. The bobbin winding units are mounted on the opposed frames on both sides of the passageway with the groups of bobbin winding units alternately mounted successively on opposite frames longitudinally of the machine with the yarns of successive bobbin winding unit groups being guided in opposite directions over the passageway.

Abstract: Positive twist control and a gentle action on the yarn are provided by a vacuum texturizing process for yarn. Single filament and multi-filament yarns can be processed, including fine denier filaments and/or weak thermoplastic filaments. Yarn is fed by feed rolls to a heater block and then to the generally axially through-extending passageway and a spindle perforated cylinder. The spindle is mounted for rotation about an axis, and is rotated at a speed of several hundred thousand rpm, while a vacuum in the range of about 8-12 inches of mercury is applied to the exterior of the cylinder. The force of the vacuum holds the yarn against the interior wall of the passageway so that each rotation of the cylinder causes a twist of the yarn, which is backed up to the heater and set in a semi-permanent, false twist configuration. The yarn is withdrawn from the cylinder by output means, at which time the twist relieves itself and a textured, bulk, stretch-type yarn is produced.

Abstract: Method to produce a spun-like textured yarn comprised of one yarn which is substantially fully oriented and the other yarn is partially oriented. The method involves plying the yarns in the draw zone before being pre-textured. The ply point of the plied yarns is located above the entrance to the heater in the draw zone.

Abstract: A slub yarn, in which a sheath component is wound around a core component to form a plurality of slub portions along the axis of the yarn, which structure is obtained by simultaneously false-twist texturing the core and sheath components. The slub yarn has a feature that the slub portion includes a multilayered winding structure of seven or more layers of the sheath component wound around the core component. A method for producing the slub yarn includes a step of overfeeding a sheath component to a core component in the direction substantially perpendicular to a passage of the core component in a twisting zone of a false-twist texturing machine while the sheath component is guided by a guide repeatedly traversed along a passage of the core component, a distance between the guide and the passage of the core component being kept in a range not shorter than 10 cm. An apparatus for randomly traversing the sheath component along the core component during the false-twist texturing process is also provided.

Abstract: The present invention provides a false twist crimped yarn having an improved coherent structure which is produced by the specific mode of processing realized by defining the processing conditions of false twist crimping system. Here the unitary effect generally takes the form of a structure in which several of the yarn composing filaments fasciate the rest of the filaments and accordingly the false twist crimped yarn can be submitted to the weaving process without undergoing the sizing, twisting and interlacing required conventionally.

Abstract: A yarn false twisting apparatus is disclosed which is adapted to produce a crimped composite yarn composed of an S twisted component and a Z twisted component, and wherein the full takeup capacity of the apparatus is utilized. The apparatus includes first and second false twisting units associated with each twisting position, with all of the first units being aligned in a first horizontal row extending along the length of the apparatus, and all of the second units being aligned in a second horizontal row. The two rows may be oriented with respect to each other, and the other elements of each twisting position, so that the paths of travel of the two components have an equal twisting length, and an equal cooling length.

Abstract: A method for producing a textured polyester yarn, especially in an in-draw texturing system, in which starting yarn is processed by means of a non-touch type heater under a heater temperature in a range of from 350.degree. C. to 800.degree. C. and a shorter processing time in a range of from 0.04 second to 0.12 second. The dyeing evenness of the fabric made from the resultant yarn is improved because the dyeability of the yarn is almost constant despite fluctuation of the heater temperature. A belt-type twister is preferably utilized for false-twisting a yarn rather than a disc type.