Abstract: Intermittently colored yarns having an intermittent and random dye spacing pattern, and systems and methods of making the same, are disclosed. Such intermittently colored yarns exhibit higher quality and lower manufacturing costs over the known intermittently colored yarns. The intermittent coloring takes place while the yarn is in caterpillar form. Carpets made from such intermittently colored yarns exhibit enhanced aesthetics over carpets made from known intermittently colored yarns. Alternatively, a stain resist, colorless base dye, or bleaching agent can be applied in the same intermittent and random spacing pattern to the intermittently colored yarns prior to subsequent dyeing. This creates a mirror image like color effect to the resulting yarn.

Abstract: A method and an apparatus involves crimping a multifilament thread, wherein the thread which is produced by melt spinning is compressed to a thread plug. The thread plug is cast on the circumference of rotating processing drum for thermal treatment and is wrapped around the circumference of the processing drum with many side-by-side wraparounds. Following that, the thread plug is unravelled in an unravelling area on the circumference of the processing drum into the crimped thread which is pulled of the processing drum. To obtain a continuous and regular unravelling of the thread plug with multiple wraparounds and mutual touching of the wraparounds of the thread plug, the thread is guided at a slant from the unravelling area of the thread plug such that a growing axial space appears between the thread and the thread plug, on the circumference of the processing drum, during increasing wraparounds of the thread on the circumference of the processing drum.

Abstract: A method and an apparatus involves crimping a multifilament thread, wherein the thread which is produced by melt spinning is compressed to a thread plug. The thread plug is cast on the circumference of rotating processing drum for thermal treatment and is wrapped around the circumference of the processing drum with many side-by-side wraparounds. Following that, the thread plug is unravelled in an unraveling area on the circumference of the processing drum into the crimped thread which is pulled of the processing drum. To obtain a continuous and regular unraveling of the thread plug with multiple wraparounds and mutual touching of the wraparounds of the thread plug, the thread is guided at a slant from the unraveling area of the thread plug such that a growing axial space appears between the thread and the thread plug, on the circumference of the processing drum, during increasing wraparounds of the thread on the circumference of the processing drum.

Abstract: A nozzle for the treatment of threads is divided in the conveying direction into a conveying part, a compression section and a guiding part. The compression section, for the purpose of forming a yarn plug, includes fixedly arranged radially and axially directed lamellar. The ends of the lamellar which face the guiding part are neither in contact with each other nor with any surrounding parts of the nozzle so that fibers which are located in the gaps between the lamellar, and which radially exit the channel being formed by the lamellar can reach an inlet funnel of the guiding part or a plug guide tube respectively, without colliding with any edges.

Abstract: An apparatus and a method of stuffer box crimping a synthetic multifilament yarn, wherein the yarn is advanced in a conveying nozzle by means of a heated conveying gas into a stuffer box and compressed to a yarn plug. At the outlet of the stuffer box, a pair of rolls form a conveying gap for advancing the yarn plug and which has a width smaller than the cross section of the plug leaving the stuffer box so as to compress the yarn plug. The internal passage of the stuffer box is constructed with a cross section that increases in the direction of advance in such a manner that no significant cohesive force develops on the yarn plug, and the resistance to the forward pressure in the yarn plug resulting from the heated conveying gas is provided essentially only by the force on the yarn plug generated by its compression in the conveying gap.

Abstract: A rotatable yarn cooling drum for cooling yarn plugs emanating from two texturizers has a circumferential perforated shell about which the yarn plugs are wound and cooled. A deflector in the form of a finger is spaced radially from the surface of the shell and laterally positioned between the ends of the shell. A yarn guide radially spaced from the drum has two yarn guide grooves for guiding the yarn plugs onto the shell at one side of the deflector and one lateral end of the shell. The yarn plugs may thus enter onto the shell at one lateral end and exit at the other lateral end after making more than a complete turn on the drum. The guide slots are illustrated as formed in a block to which the finger is attached.

Abstract: Method and apparatus for texturing thermoplastic threads. In starting the operation of the texturing device, one or several non-textured yarns can be drawn in more easily and more reliably via a drawing-in yarn guide which guides the at least one yarn for the purpose of drawing same into the feed channels of the texturizing nozzle and into the plug channels of the plug feed roller essentially parallel to these channels and at a predetermined distance from each other.

Abstract: A method for detecting a yarn break between the cooling drum and the windup in a yarn bulking process and containing the broken end to prevent the broken end from interrupting adjacent threadlines. The yarn, when broken, is contained in individual tubes extending along the yarn path to prevent the yarn from interrupting adjacent yarn lines. The yarn is recaptured from the tube by a jet moveable into and out of engagement with the tube.

Abstract: An apparatus for the continuous crimping of thermoplastic threads has at least one crimping nozzle with a feed channel and a nozzle orifice and at least one pair of lateral guide means, e.g. needle rows, arranged around the circumference of a plug feed roller wherein, in an apparatus in which several threads are crimped in parallel, several axially spaced guide means pairs are used on the same feed roller, and in order to prevent disturbing transverse flows so as to render the aerodynamic conditions uniform during plug formation in the vicinity of the crimping nozzle orifice and for easy handling the plug feed roller, the guide means are axially protected against one another and against the outside by protective rings which have an identical or larger external diameter than the pair of guide means.

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: Yarn 1 fron an extruder is stretched by heated rollers (3,5) and passes to a texturizer unit 2 where it is plasticized and crimped, leaving in the form of a crimp plug along a stack (8). The yarn is heated in the unit (2) by air passing along a pipe (7) and heated by a base heating element (9) in conjunction with a booster element (11). The plug of crimped yarn (6) passes to the surface of a rotating cooling drum (4), around which it makes a number of turns before crimped yarn (1') is withdrawn from the leading end of the plug at (6'). The plug length is monitored by a sensor unit comprising a light source (16) which directs light through holes 10 in the drum onto a receiver unit (14) including three diodes A, B and C. When the plug end (6') is at the datum position, the diode A is covered, the diode (C) is uncovered and the plug end flutters backwards and forwards over the diode (B).

Abstract: A tow of continuous filaments is fed by aspiration into a stream of compressible fluid. The stream containing the filaments is directed into contact with a barrier disposed within a chamber at a force sufficient to initiate crimping of the filaments. A major portion of the compressible fluid is separated from the filaments and expelled from the chamber. The filaments are transported through the chamber by continuous movement of a surface therein at sufficient velocity to cause overfeeding of the filaments, whereby the filaments are forced against a mass of the tow and emerge from the chamber in crimped form.

Abstract: The treatment of a filament cable in a device into which it is introduced, in which it is crimped, treated with a gas, and withdrawn, characterized by the fact that the cable is crimped using a crimping device which is operated gas-dynamically, which has been mounted into the front face of a device for the treatment of the cable with a gas, and is thus introduced into this device in the manner of a sluice, and is folded using a slide with an S-shaped section onto a gas-permeable, horizontally transporting base as a crimping cake, is treated there with the gas, and is finally withdrawn from the device.

Abstract: The invention concerns a method of threading in a thread into a texturing nozzle known as such, and an apparatus for implementing the method. The texturing nozzle is brought from a working position into a threading-in position for threading-in, in which position a treatment chamber provided with slots and located upstream from the outlet opening of the texturing nozzle is subject to a vacuum for sucking in a thread brought to a position in front of the inlet opening of the texturing nozzle.

Abstract: The invention concerns a method of threading in a thread (1) into a texturing nozzle (2) known as such, and an apparatus for implementing the method. The texturing nozzle is brought from a working position (A) into a threading-in position (B) for threading-in, in which position a treatment chamber (13) provided with slots (12) and located upstream from the outlet opening (14) of the texturing nozzle is subject to a vacuum for sucking in a thread brought to a position in front of the inlet opening (44) of the texturing nozzle.The apparatus for implementing the method comprises a duct (19, 32, 32a, 41, 41a), which can be tilted open, for taking up substantially sealingly against the surrounding atmosphere the treatment chamber (13) of the texturing nozzle (2) provided with slots (12), as well as for taking up a suction device (18, 40) sucking the thread (1) through the texturing nozzle (2).

Abstract: In the stuffing of synthetic continuous filamentary threads in stuffer boxes, special value is to be placed on the thermal treatment and especially the cooling of the initially crimped filaments. The filaments in the configuration of a compact thread plug, which is formed in the stuffer box, can be wound on a rotatably driven drum in several helical windings, the last thread plug winding can then be disentangled again at the end of the drum, and the finished texturized thread drawn off. The disentangling of the thread plug and the drawing off of the thread is improved by the present invention through an application of axial and/or radial forces or pressures onto the last thread plug winding in the region of the disentangling point. Suitable mechanical and pneumatic devices are provided by the invention for this purpose.

Abstract: Multifilament thermoplastic synthetic yarn is textured by an improved process involving propelling the yarn through an energy tube by superheated steam to strike, at an oblique angle, an unyielding barrier within a chamber in which the yarn then forms a plug on a moving perforate surface. The improvement comprises heat-setting the yarn, before the texturing operation, at constant length to the point that its density increases to at least 50% of the difference between that of undrawn amorphous yarn and the maximum normally attainable in such yarn; and feeding the resulting yarn hot into the energy tube whereby tendency toward shrinkage of the yarn resulting from undergoing crimping is reduced, and/or a higher texture level is obtainable at given temperature of the crimping operation.

Abstract: Method of treating synthetic threads, particularly filament or foil threads comprises heating the threads up to the center of their cross-section, crimping the heated thread, forming the crimped threads into a wadding, heating and compressing the wadding to reduce its volume and thereafter cooling the compressed wadding. An apparatus for treating the yarn includes a continuous heating chamber which is arranged adjacent a cooling chamber. An apparatus is provided for feeding the yarn to be treated toward the heating chamber and for crimping the yarn preferably while it is heated and perhaps also stretched. Crimping may be carried on by directing the thread under a fluid force against a screen, by passing the thread between a pair of rollers which have crimping means or by a combination of the two and, in addition, stretching means may be provided to stretch the thread.