Abstract: A fiber crimping apparatus is disclosed which has an internally contacting type nip roller which consists of a ring roller and an inscribed roller rotating together in the same direction at the same speed. The apparatus is provided with a control groove formed on the surfaces of the ring roller and/or the inscribed roller holding the fiber bundle between them and which controls the thickness in the transverse direction of the fiber bundle to be crimped. As the fiber bundle in the nip zone is controlled in the transverse direction, the constriction of the fiber bundle is produced evenly in full width and the crimping process produces even waves and the apparatus is operated stably.

Abstract: An apparatus is disclosed for producing a band of rectangular cross section having at least two layers of material. The apparatus includes means for advancing a first band along a predetermined linear path and means for guiding a second band into layered alignment with the first band. The apparatus further includes a roll around which the second band is partially wrapped prior to contacting the first band, the second band having an initial tangential contact position with the roll along a line on the surface thereof extending generally axially with respect to the roll. The roll is tiltable in a plane defined by the axis thereof and the initial tangential contact position of the second band, whereby the lateral take-off position of the second band may be controlled by tilting the roll so as to guide it into aligned juxtaposition with the first band to form a layered, substantially rectangular tow band.

Abstract: A method and apparatus for producing multi-colored crimped yarns is disclosed, and which includes the steps of spinning a plurality of differently colored groups of filaments, subjecting the filaments of each group to a treatment liquid, and then combining the filaments to form respective strands. Each strand is then subjected to an air tangling process, then stretched and the strands are thereafter combined in a thermo-pneumatic texturizing process. This processing sequence produces multi-filament yarns with good color blending.

Abstract: A method of producing crimped tow by continuously feeding a tow against an adjustable counter pressure means; the tow is maintained at an average predetermined thickness and steam enters the chamber and is exhausted from the chamber in a manner to provide uniform heating of the tow to provide a fiber that is uniformly annealed as determined by measuring light reflectance for yarn dyed with a structural sensitive Milling Blue "B" dye or shrinkage uniformity determined by thermal analysis.

Abstract: A wear disk for a crimping machine used in the manufacture of synthetic fibers comprises a sinter material of metal and carbon having an apparent density of from 4 to 7 g/cm.sup.3. The metal of the sinter material is particularly copper or an alloy thereof and therefore highly heat conductive.

Abstract: A yarn texturing apparatus is disclosed which includes a nozzle having a yarn duct therethrough, and a perforated stuffer box at the outlet end of the duct. Heated air is introduced into the duct, and the air is heated by a heater which is positioned in the air supply line leading to the nozzle. The output of the heater is controlled by a temperature sensor which is positioned inside the stuffer box. Also, the nozzle comprises two confronting sections which can be separated to facilitate yarn thread-up, and a valve is provided in the supply line to divert the heated air to an exhaust line when the nozzle is opened. A second temperature sensor is positioned in the supply line and is operative when the nozzle is opened to regulate the output of the heater and avoid large fluctuations of its output.

Abstract: The present invention concerns a machine for continuously crimping textile threads. The machine (10) comprises a frame composed of a support plate (14) to which there are attached two upper blocks (17a and 17b) defining a compression chamber (18), two elements (19a and 19b) defining a decompression chamber (20) and two paddles (21a and 21b) defining an evacuation chamber (22). The threads are introduced into the compression chamber by two pulleys (25a and 25b). The decompression chamber (20) is supplied with steam through conduits (31a and 31b). The paddles (21a and 21b) are subject to the action of two spring blocks (33a and 33b). This machine is used to cause crimping and bulking of all kinds of threads, and for fixing the crimping and inflation.

Abstract: A method and apparatus for the intense crimping of a multifilament yarn in a stuffer box is disclosed, and wherein a false twist is imparted to the advancing yarn at a location upstream of the stuffer box, and with the intensity of the false twist being periodically or aperiodically varied.

Abstract: Staple fibers having a crimp frequency in the range of 3 to 6 crimps per centimeter are mae by a process including a co-crimping step in which conductive and nonconductive filaments are crimped together.

Abstract: An apparatus for crimping a continuous tow of textile material including a pair of molding rollers for initial molding and pulling of the tow, a pair of crimping rollers for molding and feeding the two to a stuffer box crimper wherein the tow is crimped. The novel pair of molding rollers includes the two spaced rotatable rollers cooperating with a side plate at each end of the nip between the rollers to define a rectangular space. Tow material is passed through the space wherein the tow is pressed and molded to the rectangular configuration. After the initial molding, the tow is passed through the pair of crimping rollers and fed into the stuffer box wherein the tow is crimped. Using the novel apparatus to crimp the tow drastically improves the uniformity of the crimped tow and the processibility or the tow. Furthermore, the novel apparatus allows for a significant reduction in the forces applied to the molding rollers and crimping rollers resulting in the reduction of filament distortion in the tow material.

Abstract: Satisfactory crimps are formed in high tensile modulus filaments having a tensile modulus of elasticity of 5,000 kg/mm.sup.2 or more by mixing the high tensile modulus filaments with additional filaments having a tensile modulus of elasticity of 3,000 kg/mm.sup.2 or less, and compression crimping the mixed filaments.

Abstract: Apparatus for crimping fibers comprises a ring roller of a comparatively large diameter which rotates in one direction and an inscribed roller which contacts the inner surface of said ring roller and which rotates in the same direction at the same velocity as the ring roller while holding bundles of fibers to be crimped between the two rollers and side rings which are situated on both sides of the place of contact of the two rollers and which rotate in the same direction at the same velocity as these rollers, and by forming the surrounding of a stuffing box by said rollers and rings.

Abstract: In an improved crimping process, use is made of a stufferbox where(a) lid and/or floor are arranged movably and(b) in the working position, the distance between lid and floor at the inlet opening is smaller than the distance between lid and floor at the outlet opening.

Abstract: A gate/loading arrangement which balances applied gate force betweem the edges of tow being crimped in a stuffer box crimper. A single hinged gate has been replaced with two or three equal sized gates and force is applied to the gates from an air cylinder through a pivotal linkage.

Abstract: The improvement in a tow delivery apparatus downstream of a crimper of a jet device mounted in the laydown spout of the apparatus in the path of the tow. The jet is operated to tension and forward tow through the spout only during startup of the crimper when operating speed is reached at startup the jet is inactivated.

Abstract: An improved stuffer box crimping apparatus of the type in which tow is fed into a rectangular cross-section crimping chamber off-set from the bite of a pair of feed rolls, the apparatus employing a crimping chamber wherein one wall is predominantly formed by a single doctor blade and an opposite wall is formed by a portion of the rotating surface of one of the cylindrical feed rolls of the feed roll pair, the doctor blade being pivotally mounted on the feed roll nearest the tip portion of the doctor blade. The cross-sectional area of the crimping chamber diminishes toward the exit portion thereof, whereby crimped filamentary material within the crimping chamber is subjected to both back pressure and a constant forwarding action by the rotating surface of the cylindrical feed roll. The pivotal mounting of the doctor blade provides precise clearance and allows the volume of the crimping chamber to adjust in accordance with tow variations.

Abstract: Process and apparatus for crimping a filament yarn, the process employed comprising forcing a hot fluid entrained filament yarn into a stuffing chamber in one direction, forcing a cold fluid from an opposite direction into a staying control chamber located down stream of said stuffing chamber, exhausting said hot fluid from the stuffing chamber and exhausting said cold fluid from the staying control chamber respectively.The apparatus comprises a hot fluid jet nozzle having a hot fluid supply conduit connected thereto, a stuffing chamber having a hot fluid exit, a staying control chamber having a cold fluid exit, and a cold fluid supply device in said order.

Abstract: A process for the preparation of texturized multifilamentary polyester yarn possessing a stable crimp, in which the yarn passes first through a crimping device comprising an injector where the yarn is subjected to a stream of hot fluid which separates the filaments, and thereafter through a stacking nozzle to cause crimping, characterized in that the fluid is fed in at a temperature below the second order transition temperature of the polyester yarn, which feeding temperature is usually between 95.degree. and 220.degree. C., and in that the stack, after it issues from the nozzle is kept in the compressed state, subjected in this state to a high pressure of the order of 20 to 200 kg/cm.sup.2, and kept at ambient temperature or subjected to a heat treatment at a temperature below the second order transition temperature of the polyester yarn, which is usually at a temperature of up to about 220.degree. C., for a period of time ranging from one minute to 150 minutes.

Abstract: A device is provided for the continuous treatment of relatively wide textile webs in a treatment medium, wherein the web and the treatment medium move through a trough having squeezing rollers associated therewith for intensifying the treatment of the web with the treatment medium and wherein a funnel-shaped diffuser is disposed at the entrance end of the trough for introducing the web of material into the trough. The device includes squeezing means which are disposed adjacent to the diffuser means and which include a pair of coacting, rotatable squeeze rollers which define therebetween a squeezing nip disposed beneath the surface of the treatment medium and through which the web passes prior to introduction into the diffuser. Deflection means are also provided which are disposed adjacent to the discharge end of the nip of the rollers for facilitating removal of the web from engagement with the circumferential surface of the rollers and for guiding the web into the trough.

Abstract: The invention relates to a nozzle device for texturizing filament yarns of synthetic, high molecular weight substances by means of a hot medium comprising heated gases or vapors, comprising three chambers arranged on after another, a first chamber through which the hot medium flows into a second chamber, the yarn being drawn into the second chamber at an angle to the direction of flow of the gaseous medium, the yarn being heated by the gaseous medium in the second chamber, and a third chamber in which the thread is compressed with the formation of plugs, the compression chamber being formed of a plurality of elastically flexible rods which are arranged on the surface of a right circular cylinder or a right circular truncated cone and fixed at one end on the end of the second chamber, the rods being of two different lengths.

Abstract: A process for crimping filaments by treating the filaments which are to be crimped, and are carried by a heated gas, in a first treatment chamber, and intermingling the heated filaments in an extended second treatment chamber, from which the gas carrier medium is drawn off through longitudinal slots radially to the direction of travel, wherein only sufficient gas is allowed to flow axially with the crimped filaments from the second treatment chamber that the travel of the crimped filaments is not impeded, while the bulk of the carrier gases is drawn off radially from the second treatment chamber. It is advantageous to draw off the carrier gas in the upper part, which comprises from about 25 to 75%, preferably from 40 to 60%, of the total length of the longitudinal slots of the second treatment chamber.

Abstract: In apparatus for compression crimping fibrous material, such as yarn, comprising a chamber for receiving the yarn from a pair of feed rollers and in which chamber the yarn is compressed, the chamber having corners intercepted by the periphery of the rollers adjacent the sides; there are provided guiding ramps adjacent the nip of the rollers to keep the yarn away from the corners as the yarn advances from the rollers into the chamber.

Abstract: A crimped fiber tow for stuffing purposes containing an ionic antistatic agent, at least one conditioning agent consisting essentially of a methyl hydrogeno polysiloxane, an alpha, omega hydroxy dimethyl polysiloxane, an emulsifier for the polysiloxanes, an Sn (II) salt of a fatty acid and high molecular weight polyethylene. The stuffing fibers are distinguished by the same soft and smooth feel as known from downs; they are more over easily displaceable one against the other and resume their bulkiness by being shaken up. The fiber tow and the fiber are therefore excellently suitable for stuffing cushions, quilts and upholstery goods.

Abstract: The improvement in a tow delivery apparatus downstream of a horizontally oriented stuffing box crimper of an unenclosed smoothly contoured curved perforated surface tangent to and sloping gradually downward away from the outlet end of the crimper to a moving conveyor belt. A vacuum is applied to the perforations in the curved surface at such a level so that the crimped tow is pushed down the curved surface by the tow exiting the crimper.