US3729831A - Process and apparatus for continuously relaxing textile yarns - Google Patents

Process and apparatus for continuously relaxing textile yarns Download PDF

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Publication number
US3729831A
US3729831A US00205677A US3729831DA US3729831A US 3729831 A US3729831 A US 3729831A US 00205677 A US00205677 A US 00205677A US 3729831D A US3729831D A US 3729831DA US 3729831 A US3729831 A US 3729831A
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yarn
tube
accumulation
heating medium
set forth
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K Kosaka
K Adachi
H Kitagawa
T Nakamura
O Kato
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Mitsubishi Rayon Co Ltd
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Mitsubishi Rayon Co Ltd
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C7/00—Heating or cooling textile fabrics
    • D06C7/02—Setting

Definitions

  • the present invention relates to a method and apparatus for continuously relaxing textile yarns such as natural and synthetic multifilament yarn and spun yarn and synthetic split fiber yarn.
  • synthetic fiber bulky yarns are conventionally prepared through the following processes.
  • a synthetic filament tow is drawn at a high temperature.
  • a portion of the drawn filament tow is draftcut so as to form a sliver of staple fibers and thereafter, the sliver is heat-treated under tensionless conditions so as to relax it.
  • the other portion of the drawn filament tow is cut into staple fibers and the staple fibers are formed into a sliver.
  • the relaxed fiber sliver and the non-relaxed fiber sliver are blended in a predetermined proportion, and then the blend sliver is spun into a yarn.
  • the spun yarn is heat-treated with a heating medium such as steam under tensionless conditions, whereby the spun yarn is converted into a high bulk yarn.
  • a filament yarn consisting of synthetic conjugate filaments each of which is composed of two polymer constituents adhering side by side along the length of the filament and having shrinking properties different from each other, is heat-treated under tensionless conditions so as to convert it to a bulky yarn in which the conjugate filaments are spontaneously crimped due to the differential shrinkage between the two constituents.
  • the heat-treatment for developing the bulkiness is applied to a hank of the filament yarn or spun yarn, and thereafter, the hank is subjected to a treatment such as scouring, bleaching and dyeing. That is, the heat-treatment is discontinuously carried out in a batch system.
  • a discontinuous process has the defects that to form the yarn into a hank is very complicated and it is necessary to rewind the yarn from the hank.
  • An object of the present invention is to provide a process and apparatus for continuously relaxing textile yarns capable of eliminating the above-stated disadvantages of the conventional prior arts.
  • Another object of the present invention is to provide a process for continuously and easily relaxing textile yarns in combination with a winding step of the yarn.
  • a further object of the present invention is to provide an apparatus for continuously relaxing textile yarns which can be compactly arranged in combination with a winding device for the yarn.
  • the relax step and the wind up step for the yarn which are separately carried out in the prior arts can be successively and continuously carried out so as to significantly shorten the processing time, and hence, to obtain a bulk yarn having uniform qualities.
  • a textile yarn is sucked into a relax tube by action of a heating medium jetted into the relax tube along the path of advance of the yarn, the sucked yarn is advanced by the current of the jetted heating medium through the relax tube while being prerelaxed, the prerelaxed yarn is accumulated in an accumulation tube under a tensionless condition, the yarn accumulation is carried through the accumulation tube by flowing a heating medium through the yarn accumulation, further relaxing the yarn.
  • a cooling medium is blown towards the upper end portion of the accumulation tube along the delivery path of the yarn in a direction opposite to that of advance of the yarn so as to cool the relaxed yarn while unravelling entanglements and intertwining of the yarn within the accumulation and preventing the accumulated yarn from overrun from the accumulation tube.
  • the heating and cooling mediums are forcibly exhaust through an exhaust duct.
  • the process of the present invention can be effected by the apparatus of the present invention which comprises, in combination, a feed nozzle device for sucking the textile yarn by jetting a heating medium, a relax tube through which the yarn is carried by the flow of the heating medium while prerelaxing the yarn, an accumulation tube in which the yarn is accumulated so as to be further relaxed under tensionless conditions and through which the yarn accumulation is conveyed the current of the heating medium, a box for covering the accumulation tube, a delivery nozzle device for delivering the relaxed yarn while cooling it with a cooling medium, and means for forcibly exhausting the heating and cooling mediums.
  • the feed nozzle device includes a path for feeding the yarn into the relax tube therethrough and a nozzle for jetting the heating medium into the relax tube.
  • the nozzle opens at the entry of the relax tube and surrounds the yarn feed path so that the heating medium jet formed through the nozzle slit sucks the yarn into the relax tube through the yarn feed path.
  • the relax tube extends from the feed nozzle device to the accumulation tube.
  • the accumulation tube has a plurality of openings on the periphery thereof and an open end.
  • the outside box surrounds the accumulation tube and has a closed end around the relax tube and an open end around the open end of the accumulation tube.
  • the delivery nozzle device includes a path for delivering the relaxed yarn therethrough and a nozzle for blowing the cooling medium therethrough.
  • the nozzle opens facing the open end of the accumulation tube and surrounds the yarn delivery path so as to cool the yarn being delivered from the accumulation tube with the cooling medium blown through the nozzle slit.
  • the exhaust means for the heating and cooling medium is connected to the outside box, the open end of the accumulation tube and the cooling medium nozzle slit.
  • FIG. 1 is a perspective view showing an arrangement containing three sets of the apparatus of the present invention
  • FIGS. 2 to 4 are all cross-sectional front views showing embodiments of the apparatus of the present invention.
  • FIGS. to 8 are all perspective views of embodiments of accumulation tubes in the apparatus of the present invention.
  • FIG. 1 shows an arrangement containing three sets of apparatus for continuously relaxing and then winding up a textile yarn such as a spun yarn, multifilament yarn or split yarn.
  • a yarn A is supplied from a supply package 1 to a relaxing device 30 by means of a pair of feed rollers 2a and 2b at a predetermined rate.
  • the relaxing device 30 comprises a feed nozzle device 3 facing the feed rollers 20 and 2b, a relax tube 6 connected to the nozzle device 3, an outside box 7 covering an accumulation tube 19 which is shown in FIGS. 2 to 4 but not in FIG. 1, connected to the relax tube 6, and a delivery nozzle device connected to the outside box 7.
  • a heating medium is fed into the feed nozzle device 3 through a main duct 4 and a branched conduit 5 and then jetted into the relax tube 6 through the nozzle device.
  • the yarn A having passed through the feed rollers 2a and 2b is sucked by action of the heating medium jet into the relax tube 6 through the feed nozzle device 3.
  • the yarn A thus sucked is upwardly advanced with the heating medium stream through the relax tube 6 and prerelaxed by the heat of the heating medium.
  • the yarn A is accumulated in the accumulation tube 19 in the outside box '7 under a tensionless condition for a predetermined period so as to be completely relaxed by the heat of the heating medium.
  • the accumulated yarn A is carried upwardly through the accumulation tube 19 by the current of the heating medium stream, and then delivered from the open top end of the accumulation tube 19 through the delivery nozzle device 10 by means of delivery rollers 12a and 12b.
  • a cooling medium is blown toward the open top end of the accumulation tube 19 through the delivery nozzle device 10 in order to cool the relaxed yarn A.
  • the cooling medium thus blown is discharged into the atmosphere together with the heating medium which has passed through the accumulation of the yarn A in the accumulation tube 19 through a branched exhaust conduit 8 and the main exhaust duct 9.
  • the yarn A advances through guide rollers 11a and 1 1b and delivery rollers 12a and 12b and then is wound up into a take-up package 14 by means of a driving drum 13.
  • the elements of the apparatus of the present invention are combined into a compact assembly hence, the apparatus can be arranged at a position below the conventional winder such as a split drum winder or spindle drive winder, so as to provide ease of handling.
  • the conventional winder such as a split drum winder or spindle drive winder
  • FIG. 2 shows a preferred embodiment of the apparatus of the present invention.
  • the feed nozzle device 3 comprises an outside tube 3a, an intermediate tube 312 and an inside tube 15b.
  • the inside tube 15b has therein an entrance path 15a for sucking the yarn A and a coneshaped nozzle 16 which converges upwardly is formed between the outside surface of the inside tube 15b and the inside surface of the intermediate tube 3b.
  • the outside tube 30 has an annular groove 17b surrounding the periphery of the intermediate tube 3b.
  • the cone-shaped nozzle 16 is connected to the annular groove 17b through numerous apertures formed on the intermediate tube 3b, and the annular groove 17b is connected to a conduit 5 which is connected to a heating medium source (not shown in the drawing).
  • the cone-shaped nozzle 16 has an opening of crosssectional area smaller than that of the conduit 5. Accordingly, when the heating medium is supplied into the cone-shaped nozzle 16 through the conduit 5, the heating medium is jetted into the relax tube 6 through the cone-shaped nozzle 16 at a velocity higher than that through the conduit 5. The yarn A is sucked into the relax tube 6 through the entrance path 15a, and upwardly carried through the relax tube 6 by the forward flow of the heating medium. During its advance through the relax tube 6, the yarn A is heated by the heating medium so as to prerelax the internal stress existing in the yarn A and preshrink it.
  • the relax tube 6 may have a heater l8 surrounding the periphery thereof as shown in FIG. 2.
  • the heater 18 may be selected from electric heater or heater jacket and heater coil through which a heating medium is recycled, or the like.
  • a heating medium is recycled, or the like.
  • the yarn A may fuse and adhere to the inside surface, or numerous flys produced from the yarn A due to the contact melt-fix on the inside surface.
  • Such adherence of the yarn A or melt-fixing of flys causes the heating medium to flow unevenly through the relax tube 6, and this uneven flow of the heating medium further aggravates the undesired adhering and melt-fixing. Accordingly any contact of the yarn A with the inside surface of the relax tube 6 must be avoided.
  • the heating medium jetted through the cone-shaped nozzle 16 produces no eddy current within the relax tube 6. Therefore, it is important that the feed nozzle device 3 has no constructional characteristic which may create such a heating medium eddy current.
  • the top end of the relax tube 6 is connected to the lower end 19a of the accumulation tube 19 having numerous apertures 20 on the periphery thereof.
  • the yarn A is conveyed by the heating medium stream upwardly into the accumulation tube 19 and accumulated there, so as to stay therein for a predetermined period under a tensionless condition.
  • the yarn A is completely relaxed and shrunk by the heat of the heating medium.
  • the heating medium is flowed into the outside box 7 through the apertures 20.
  • the accumulation of the yarn A partly blocks the apertures so as to intercept the flow of the heating medium through the apertures. Accordingly, the intercepted heating medium stream forces the accumulation of the yarn A so as to convey it upwardly through the accumulation tube 19.
  • the delivery nozzle device comprises an inside tube 310 for defining therein an exit path 31b for the yarn A and an outside tube 32a surrounding the inside tube 31a.
  • a cone-shaped nozzle 32b converging downwardly is formed between the outside surface of the inside tube 31a and the inside surface of the outside tube 32a.
  • the cone-shaped nozzle 32a is connected to a cooling medium source (not shown in the drawing) through a conduit 211.
  • the yarn A After completely relaxing and shrinking, the yarn A is delivered from the open end 1% of the accumulation tube 19 through the exit path 31b.
  • the cooling medium is fed from the source thereof into the cone-shaped nozzle 32b through the conduit 21 and blown through the cone-shaped slit 32b toward the open end 1% of the accumulation tube 19. That is, the cooling medium is blown along the delivery path of the yarn A in a direction opposite to that of advance of the yarn A so as to cool the yarn A.
  • Such blowing of the cooling medium has the following advantages.
  • the yarn A Since the cooling medium is blown in a direction opposite to the direction of advance of the yarn A, the yarn A is exposed always to the flesh cooling medium during its advance between the accumulation tube 19 and the exit path 31b. Therefore, the yarn A can be cooled at high efficiency.
  • the cooling medium thus blown flows into an exhaust duct 9 through a conduit 8 connected to the outside box 7 together with the heating medium which has passed into the outside box 7 through the apertures 20, and then, the mixture of the cooling and heating mediums is forcibly exhausted into the atmosphere by means of a suction device (not shown in the drawing).
  • a damper 22 is disposed in the conduit 8 for the purpose of adjusting the flow rate of the exhaust.
  • FIG. 3 shows another preferred embodiment of the apparatus of the present invention.
  • a supplementary exhaust opening 23a is formed on the periphery ofthe outside box 7.
  • a portion of the heating medium from the apertures of the accumulation tube 19 flows into a supplementary exhaust duct through a supplementary exhaust conduit 23b and is then naturally passed into the atmosphere without any exhausting device.
  • a supplementary damper 24 is disposed in the conduit 23b in order to control the flow rate of the heating medium. It is necessary that supplementary exhaust of the heating medium is not forcible carried out. If the supplementary exhaustion is forcibly effected by means of, for example, an exhaust fan, a portion of the accumulation of the yarn A in the accumulation tube 19 is forced into the apertures 20 by the heating medium suction. This causes not only the disadvantage that the apertures 20 are excessively blocked by the yarn A but the disadvantage that the portion of the yarn A is drawn into the apertures 20 so as to obstruct the upward advance of the accumulation of the yarn A.
  • the construction as shown in FIG. 3 has the advantages detailed below.
  • the exhaust steam from the accumulation tube 19 condenses in the outside box 7 before the exhaust steam reaches the exhaust conduit 8 so as to produce water condensation.
  • the exhaust steam flowing through the apertures 20 distributed on the lower periphery of the accumulation tube 19 frequently condenses in the outside box 7.
  • the apertures 20 are from the exhaust conduit 8 through which the heating medium is exhausted, the lower the suction effect of the apertures 20. Therefore, the heating medium is sucked through the apertures 20 located on the lower periphery of the accumulation tube 19 at a flow rate lower than that through the apertures 20 located on the upper periphery.
  • the suction of the heating medium in the lower portion of the accumulation tube 19 is effected in a non smooth manner, there is a tendency for the bottom level of the accumulation of the yarn A to vary with variation of the flow rate of the heating medium flowing through the lower portion of the accumulation tube 19.
  • the heating medium flowed through the apertures 20' on the lower periphery of the accumulation tube 19 can be smoothly exhausted into atmosphere through the supplementary exhaust conduit 23b and the supplementary exhaust duct 25. Accordingly, the abovestated disadvantages of the apparatus of FIG. 2 are not found in the apparatus of FIG. 3.
  • the apparatus as shown in FIG. 4 is suitable for continuously relaxing and shrinking the yarn A at a high velocity.
  • the yarn A has a high shrinking property, sometimes, the yarn A can not be completely shrunk by the heating medium supplied through the feed nozzle device 3.
  • it is effective for completely shrinking the yarn A that, as shown in FIG. 4, the outside box 7 is laterally partitioned into an upper chamber 7a and a lower chamber 7b with a partition 27, and a supplementary heating medium supply conduit 26 is connected to the lower chamber 78.
  • the heating medium at a predetermined temperature is fed into the lower chamber 7b through the supplementary supply conduit 26 and then flows into the lower portion of the accumulation tube 19 through the apertures 20 thereof.
  • the yarn A accumulated in the accumulation tube 19 is heated by the heating mediums fed through the feed nozzle device 3 and the relax tube 6 and the additional heating medium fed through the lower chamber 7b and the apertures 20 so as to completely relax and shrink the yarn.
  • the heating medium in the accumulation tube 19 flows into the upper chamber 7a through the apertures 20 in the upper portion of the accumulation tube periphery.
  • the heating medium flowing through the accumulating tube 19 has a flow rate and pressure higher than those of FIGS. 2 and 3. Since the higher flow rate and pressure, sometimes, causes overrun of the yarn A from the accumulation tube 19, it is desirable that the cooling medium flows at a rate and pressure higher than those of FIGS. 2 and 3.
  • the supplementary supply conduit 26 and the box 7 are covered by a heater 28 in order to elevate the temperature of the heating medium flowing therethrough, and to enhance the relaxing effect on the yarn A.
  • the accumulation tube 19 is an important element for effectively accomplishing the objects of the present invention. Accordingly, it is necessary that the accumulation tube has the following capabilities.
  • the yarn accumulation being received in the accumulation tube is carried upwardly successively without undesirable entanglement and intertwining of the yarn.
  • the apertures must be formed with the total opening area balanced against the amount of the yarn to be accumulated in the accumulation tube.
  • opening area ratio percentage used hereinafter means the ratio in percent of the total opening area of the apertures to the total area of the accumulation tube periphery.
  • the size and shape of the apertures are related to the thickness of the yarn and fineness of the filaments.
  • FIGS. 5 to 8 all show various accumulation tubes usable in the apparatus of the present invention.
  • the accumulation tube usable for the art of the present invention is not in any way limited to the embodiments as shown in FIGS. 5 to 8.
  • the accumulation tube 19 is a cylinder provided with numerous apertures 20.
  • the accumulation tube 19 has an inside volume of 24,210 mm and an opening area ratio percentage of the apertures of 14.4 percent, and the aperture has a circular shape and a diameter of 1.6 mm.
  • An accumulation tube having these dimensions is suitable for processing a yarn of 6 18 meter count while accumulating 8 to 9 meter of the yarn therein.
  • the accumulation tube 19 converges downwardly and has the advantage that in the tube, the yarn is accumulated in a stable condition with less entanglements and intertwinings of the yarn than those in the accumulation tube shown in FIG. 5 and the yarn accumulation is prevented from reversal.
  • the accumulation tube of FIG. 6 has an inside volume of 19,310 mm, an opening area ratio percent age of apertures of l 1.3 percent, and the aperture has a circular shape and a diameter of 1.0 mm.
  • An accumulation tube having the above-mentioned dimensions is suitable for processing yarn of 12 to 36 meter count at an accumulation of the yarn of7 to 8 meter.
  • the accumulation tube 19 is composed of an upwardly converging upper cone and a downwardly converging lower cone connected to each filament yarn which has a tendency to entangle and to reverse its yarn accumulation or a low count spun yarn which has a tendency to form numerous fibrils on its surface.
  • the accumulation tube of FIG. 7, for example, has an inside volume of 9,692 mm an opening area ratio percentage of apertures of 9.1 percent, and is provided with circular apertures of 0.6 mm diameter.
  • An accumulation tube having these dimensions is useful for processing a spun yarn of 24 to 64 meter count and a conjugate yarn of to 500 denier.
  • the accumulation tube 19 downwardly converges and has a plurality of slits 20a extending along the length of the tube 19.
  • the accumulation tube 19, for example, has an inside volume of 32,620 mm and an opening area ratio percentage of 8.2 percent, and the slits have a width of 2.0 mm.
  • Such an accumulation tube is useful for relaxing a conjugate yarn and a spun yarn having a relatively high thickness.
  • EXAMPLE I A spun yarn of s 2/36 consisting of acrylonitrile polymer fibers and having a shrinkage in boiling water of 24.5 percent was continuously relaxed and shrunk into a high bulk yarn by utilizing the apparatus as shown in FIGS. 1 and 3.
  • the accumulation tube had a configuration as shown in FIG. 6 and an inside volume of 19,310 mm and was provided with numerous circular apertures of 1.0 mm diameter with an opening area ratio percentage of 11.3 percent.
  • the relax tube was covered by an electric heater of W.
  • the spun yarn was fed into the relax tube through the feed path of the feed nozzle device at a velocity of 420 m/min.
  • the spun yarn was fed at an overfeed ratio of 22 percent.
  • overfeed ratio refers to a ratio of the difference between the feed velocity and the delivery velocity to the feed velocity.
  • the resultant yarn had a shrinkage in boiling water of 1.8 percent and an excellent bulkiness.
  • Example 2 The procedure of Example 1 was repeated for a spun yarn of l/56" consisting of acrylonitrile polymer fibers and having a shrinkage in boiling water of 25 percent utilizing the apparatus as shown in FIGS. 1 and 3.
  • the accumulation tube had a configuration as shown in FIG. 7 and an inside volume of 9,692 mm and was provided with numerous circular apertures of 0.6 mm diameter with an opening area ratio percentage of 9.1 percent, and the relax tube was covered by an electric heater of l 10 W.
  • the processing for the spun yarn was carried out under the conditions detailed below.
  • the resultant yarn had a shrinkage in boiling water of 1.8 percent and an excellent bulkiness.
  • Example 3 The procedure of Example 1 was repeated for relaxing and shrinking a polypropylene conjugate filament yarn of 180 denier/60 filaments having a shrinkage in boiling water of 25 percent utilizing the apparatus shown in FIGS. 1 and 3. The shrinkage in boiling water mentioned above was determined from the yarn in hank form.
  • the accumulation tube had a configuration as shown in FIG. 7 and an inside volume of 9,692 mm and provided with numerous circular apertures of 0.6 mm diameter with an opening area ratio percentage of 9.1 percent.
  • the relax tube was covered by an electric heater of l W.
  • Heating medium saturated steam of 1.0 kglcm fl pressure 2. Feed rate of heating medium: 0.95 kg/hr 3. Temperature of steam in relax tube: 126C 4. Feed velocity of yarn: 820 m/min 5. Delivery velocity of yarn: 492 m/min 6. Overfeed ratio: 40percent 7. Length of accumulated yarn: 24 m 8. Accumulating time: 2.9 sec.
  • Cooling medium air at room temperature having a pressure of 0.35 kg/cm .G
  • the resultant yarn had a shrinkage in boiling water of 3.3 percent and a crimp contraction of 23 percent.
  • the crimp contraction was determined as follows.
  • a crimped yarn is stretched to a length 1 under a load of 100 mg/d for 1 minute and to a length 1 under a load of 1 mg/d for 1 minute, therefore the crimp contraction of the yarn can be expressed by the following equation:
  • Example 4 The procedure of Example 1 was repeated for a spun yarn of 2/36" consisting of acrylonitrile polymer fiber and having a shrinkage in boiling water of 29 percent by employing the apparatus as shown in FIGS. 1 and 2.
  • the apparatus was provided with an accumulation tube having a configuration as shown in FIG. 5 and an inside volume of 24,210 mm and provided with numerous circular apertures of 1.6 mm diameter with an opening area ratio percentage of 14.4 percent.
  • the relax tube was covered by an electric heater of 130 W.
  • the processing of the spun yarn was carried out under the conditions as detailed below.
  • Heating medium saturated steam having a pressure 2.
  • Feed rate of heating medium 1.4 kg/hr 3.
  • Temperature of steam in relax tube 132C 4.
  • Feed velocity of yarn 420 m/min 5. Delivery velocity of yarn: 327 m/min 6.
  • Overfeed ratio 22%
  • Cooling medium air at room temperature having a pressure of 0.6 kg/cmfi
  • the resultant yarn had a shrinkage in boiling water of 2.8 percent and an excellent bulkiness.
  • Example 5 The procedure of Example 4 was repeated for the same spun yarn as used in Example 4 and utilizing the apparatus shown in FIGS. 1 and 4.
  • the accumulation tube and relax tube were the same as those of Example 4 and the supplementary supply conduit for the heating medium was covered by an electric heater of W.
  • the processing of the spun yarn was performed under the condition as detailed below.
  • Heating medium supplied to feed nozzle and supplementary feed circuit saturated steam having a pressure of 1.2 kg/cm .G
  • Cooling medium
  • EXAMPLE 6 A spun yarn of 3/65" consisting of acrylonitrile polymer fibers and having a shrinkage in boiling water of 26 percent was relaxed and shrunk into a high bulk yarn suitable for example, for hand knitting by using the apparatus shown in FIGS. 1 and 3.
  • the apparatus includes an accumulation tube having a configuration as shown in FIG. 6 and a relatively large inside volume of 144,100 mm and is provided with numerous circle apertures each of 2.2 mm diameter with an opening area ratio percentage of 12.3 percent, and a relax tube covered by an electric heater of W.
  • the spun yarn was processed under the following conditions.
  • Cooling medium air at room temperature having a pressure of 0.8 kg/cmfi 2.
  • the relaxed yarn had a shrinkage in boiling water of 1 1.7 percent and an excellent bulkiness.
  • a process of continuously relaxing a textile yarn comprising; v
  • heating medium is selected from hot air, saturated steam or superheated steam.
  • An apparatus for continuously relaxing a textile yarn comprising;
  • a feed nozzle device provided with means for defining a yarn feed path and means for defining a nozzle slit surrounding said yarn feed path through which nozzle a heating medium is jetted
  • a relax tube extending from said feed nozzle device
  • an accumulation tube extending from-said relax tube and having a plurality of openings on the periphery thereof and one end open, an outside box covering said accumulation tube
  • a delivery nozzle device provided with means for defining a yarn delivery path and means for defining a nozzle slit for forming and blowing a cooling medium around said yarn delivery path and opening in face of said open end of said accumulation tube, and
  • said accumulation tube is composed of an upwardly converging cone-shaped upper tube and a downwardly converging cone-shaped lower tube connected to each other.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Treatment Of Fiber Materials (AREA)
US00205677A 1970-12-07 1971-12-07 Process and apparatus for continuously relaxing textile yarns Expired - Lifetime US3729831A (en)

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JP45107935A JPS5134018B1 (de) 1970-12-07 1970-12-07

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US (1) US3729831A (de)
JP (1) JPS5134018B1 (de)
BR (1) BR7108099D0 (de)
CH (3) CH1785471A4 (de)
FR (1) FR2117501A5 (de)
GB (1) GB1365975A (de)
IT (1) IT941989B (de)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3802038A (en) * 1970-12-16 1974-04-09 Neumuenster Masch App Crimping of filamentary materials
US3802039A (en) * 1971-09-06 1974-04-09 Neumuenster Masch App Method of crimping of filamentary materials
US3812665A (en) * 1972-12-22 1974-05-28 Eastman Kodak Co Method and apparatus for forming random slubs in yarn
US3824656A (en) * 1971-12-30 1974-07-23 Neumuenster Masch App Apparatus for crimping of filamentary materials
US3837056A (en) * 1972-02-09 1974-09-24 Richen Co Cotton treating process
US3840950A (en) * 1973-03-22 1974-10-15 Textured Yarn Co Strand treatment apparatus
US3852857A (en) * 1972-05-04 1974-12-10 Fiber Industries Inc Textile fluid crimping apparatus
US3930602A (en) * 1974-10-04 1976-01-06 Vorobiev Alexandr Kupriyanovic Apparatus for transferring threads from the spinning and finishing part of a machine for continuous production of artificial threads to the take-up and winding arrangement thereof
US3956807A (en) * 1975-05-02 1976-05-18 Eastman Kodak Company Jet apparatus for forwarding and entangling tow
US3977059A (en) * 1972-05-04 1976-08-31 Fiber Industries, Inc. Textile fluid crimping process and apparatus
US4077097A (en) * 1972-11-29 1978-03-07 Akzona Incorporated Apparatus for developing bulk in a strand of synthetic textile yarn
US4204301A (en) * 1978-04-26 1980-05-27 Greentex Incorporated Strand handling system and method therefor
US4268940A (en) * 1978-05-16 1981-05-26 Teijin Limited Process and apparatus for crimping filament yarn
US4782566A (en) * 1985-07-15 1988-11-08 Maschinenfabrik Rieter Ag Method of texturizing continuous filament threads
US6716014B2 (en) * 1998-07-23 2004-04-06 Barmag Ag Apparatus and method for melt spinning a synthetic yarn

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2187481B (en) * 1986-03-24 1989-12-06 Sipa Societa Italiana Prodotti Process for shrinking thermically shrinkable fibres
CN112779714A (zh) * 2020-12-29 2021-05-11 福建佶龙机械科技股份有限公司 一种用于热定型机的冷却装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2586800A (en) * 1946-10-23 1952-02-26 Celanese Corp Apparatus for the treatment of filamentary materials
US3482294A (en) * 1961-02-08 1969-12-09 Rhodiaceta Apparatus for fluid treating filamentary materials
US3644968A (en) * 1968-12-31 1972-02-29 Ici Ltd Apparatus for relaxing yarns

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2586800A (en) * 1946-10-23 1952-02-26 Celanese Corp Apparatus for the treatment of filamentary materials
US3482294A (en) * 1961-02-08 1969-12-09 Rhodiaceta Apparatus for fluid treating filamentary materials
US3644968A (en) * 1968-12-31 1972-02-29 Ici Ltd Apparatus for relaxing yarns

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3802038A (en) * 1970-12-16 1974-04-09 Neumuenster Masch App Crimping of filamentary materials
US3849844A (en) * 1970-12-16 1974-11-26 Neumuenster Masch App Apparatus for crimping of filamentary material
US3802039A (en) * 1971-09-06 1974-04-09 Neumuenster Masch App Method of crimping of filamentary materials
US3824656A (en) * 1971-12-30 1974-07-23 Neumuenster Masch App Apparatus for crimping of filamentary materials
US3837056A (en) * 1972-02-09 1974-09-24 Richen Co Cotton treating process
US3852857A (en) * 1972-05-04 1974-12-10 Fiber Industries Inc Textile fluid crimping apparatus
US3977059A (en) * 1972-05-04 1976-08-31 Fiber Industries, Inc. Textile fluid crimping process and apparatus
US4083091A (en) * 1972-11-29 1978-04-11 Akzona Incorporated Method for developing bulk in a strand of synthetic textile yarn
US4077097A (en) * 1972-11-29 1978-03-07 Akzona Incorporated Apparatus for developing bulk in a strand of synthetic textile yarn
US3812665A (en) * 1972-12-22 1974-05-28 Eastman Kodak Co Method and apparatus for forming random slubs in yarn
US3840950A (en) * 1973-03-22 1974-10-15 Textured Yarn Co Strand treatment apparatus
US3930602A (en) * 1974-10-04 1976-01-06 Vorobiev Alexandr Kupriyanovic Apparatus for transferring threads from the spinning and finishing part of a machine for continuous production of artificial threads to the take-up and winding arrangement thereof
US3956807A (en) * 1975-05-02 1976-05-18 Eastman Kodak Company Jet apparatus for forwarding and entangling tow
US4204301A (en) * 1978-04-26 1980-05-27 Greentex Incorporated Strand handling system and method therefor
US4268940A (en) * 1978-05-16 1981-05-26 Teijin Limited Process and apparatus for crimping filament yarn
US4782566A (en) * 1985-07-15 1988-11-08 Maschinenfabrik Rieter Ag Method of texturizing continuous filament threads
US6716014B2 (en) * 1998-07-23 2004-04-06 Barmag Ag Apparatus and method for melt spinning a synthetic yarn

Also Published As

Publication number Publication date
JPS5134018B1 (de) 1976-09-24
FR2117501A5 (de) 1972-07-21
CH593358A5 (de) 1977-11-30
GB1365975A (en) 1974-09-04
IT941989B (it) 1973-03-10
CH1785471A4 (de) 1976-11-15
DE2159660A1 (de) 1972-06-22
BR7108099D0 (pt) 1973-04-26
CH590943B5 (de) 1977-08-31
DE2159660B2 (de) 1975-07-17

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