US3576058A - Process and apparatus for the continuous compression crimping and setting of a multifilament yarn - Google Patents

Process and apparatus for the continuous compression crimping and setting of a multifilament yarn Download PDF

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Publication number
US3576058A
US3576058A US814413A US3576058DA US3576058A US 3576058 A US3576058 A US 3576058A US 814413 A US814413 A US 814413A US 3576058D A US3576058D A US 3576058DA US 3576058 A US3576058 A US 3576058A
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steam
yarn
diameter
expansion chamber
chamber
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US814413A
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English (en)
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Ernst Berg
Rudolf Hess
Rudi Wollbeck
Wolfgang Klein
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Glanzstoff AG
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Glanzstoff AG
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes
    • D02G1/122—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes introducing the filaments in the stuffer box by means of a fluid jet

Definitions

  • the invention generally relates to a process and apparatus for the continuous compression crimping of endless thermoplastic filaments, in which the compact yarn or bundle of filaments is conducted with the aid of a steam jet flowing through an injector nozzle into a compression chamber where the yarn is randomly deposited in three-dimensional winding lines, fixed or heat set in its crimped form and, by means of the force of subsequently introduced material, is pressed through this compression chamber.
  • Processes of this type and suitable apparatus therefor are already known.
  • the rest of the fluid medium e.g. steam, accompanies the yarn through the short compression chamber, the end of which is closed by a leaf spring or spring-actuated clapper gate and then escapes into the atmosphere.
  • the compressed and crimped yarn exits at the discharge end of the compression chamber, against the resistance of the leaf spring or clapper gate, and is drawn ofi' for further proceming or collection onto a bobbin by means of a suitable yarn transport mechanism.
  • the yarn produced according to this type of known process has an irregular three-dimensional crimped structure.
  • the leaf spring or gate acting as a compression member has an extremely hampering effect in operation. Individual filaments become stuck between the chamber and the leaf spring or gate, thereby leading to operational disturbances and to larnent breakages Such production of the crimped yarn thus causes considerable difficulties in any further processing.
  • the yarn aer it has been surrounded by a fluid jet stream in an injector nozzle is conveyed by the jet through a wide passage.
  • the wall of the passage has no apertures so that the vapor such as steam can act on the yam over a path of several centimeters.
  • This path is further lengthened by seating the coil spring acting as the compression chamber in a guide sleeve of several centimeters in length. It is only after this guide sleeve, i.e. at the free end of the compression chamber, that the steam can gradually separate itself from the crimped yarn.
  • One object of the present invention is to continuously produce a crimped and heat-set yarn which, as compared to crimped yarns produced according to known processes, has an increased crimping stability, greater bulkiness or voluminosity, an improved dyeability and a high yarn unifonnity.
  • a further influencing factor has been found to reside in the form of the transition between the acceleration passage and the immediately following expansion chamber.
  • a gradually diverging transition leads to relatively unsatisfactory yarn properties whereas the transition according to the present invention takes place abruptly, i.e. at the junction between the acceleration passage and the expansion chamber.
  • the ratio of the diameter of the acceleration passage to the expansion chamber diameter can be varied within certain limits in such a way that for any type of yarn there can be achieved an easily determined optimum crimping process.
  • Another important object of thc present invention is to provide the use of a cheap fluid jet and vaporous fixing agent which is readily available in most plants.
  • steam is the most advantageous fluid, especially saturated steam accumulating as a waste vapor in most plants.
  • the process according to the invention thus provides a substantial improvement in the continuous crimping and heat setting of a synthetic thermoplastic multfilament yarn.
  • the steps of the process include the following: continuously propelling the initially uncrimped and compact yarn by a jet of steam through a tubular acceleration passageway having a substantially constant diameter of 2 to 4.8 times the diameter of said compact yarn; passing the yarn and steam flowing therewith directly from said passageway into an expansion chamber having a diameter of from 8 to 22 times the diameter of said compact yarn while drawing off a major proportion of said steam through lateral openings in said expansion chamber arranged at an interval spaced from the inlet side of said chamber of 0.5 to 2 times the diameter of said chamber, thereby suddenly expanding the flow of steam and opening up the compact yarn with the individual filaments being spread apart; depositing the spread-apart filaments in an elongated compression chamber arranged as a longitudinal extension of said expansion chamber, said filaments being crimped and forced through said compression chamber by the jet action of said steam; passing the remaining minor proportion of said steam through said compression chamber at
  • saturated steam is preferred as the fluid jet or propellant introduced with the yarn into the acceleration passageway.
  • the temperatures and vapor pressures of the saturated steam entering the injection nozzle have a lower limit caused by the requirement for a compressed, expansible vapor capable of yielding the necessary jet propulsion of the yarn and an upper limit caused by the requirement that the yarn must not be thermally damaged by the steam.
  • the vapor properties of the steam pressure, temperature, degree of saturation
  • the crimp stability can be increased provided that 70 to 90 percent of the steam is discharged laterally through the openings of the expansion chamber. ln order to further lower the moisture content of the crimped yarn 'i emerging from the compression chamber, the remaining portion of the steam flow can be drawn off laterally shortly before the free or discharge end of the compression chamber.
  • the same result can also be achieved by injecting hot air at a temperature of from 100 C. to 150 C. near the free or outlet end ofthe compression chamber.
  • an additional heating of the chamber e.g. by means of a heating jacket, electrical resistance heating elements or the like.
  • the moisture content measured as percentage by weight with reference to the dry yarn, at values below l5 percent, preferably below 8- l percent.
  • the compressed, crimped and heat-set yarn, after leaving the compression chamber, can be collected or deposited in canisters or pots or wound onto a takeup bobbin by any suitable delivery or transporting mechanism.
  • This apparatus essentially includes: an annular steam jet nozzle surrounding a tubular yarn entry passage with means to supply steam to said nozzle; an interchangeable elongated acceleration tube of substantially constant diameter arranged to receive steam and yarn from said nozzle and entry passage for propulsion longitudinally thereof; a separately interchangeable tubular expansion chamber concentrically mounted at the discharge end of said acceleration tube, said expansion chamber having a larger diameter than said acceleration tube and being provided with lateral openings for the discharge of steam therefrom; a steam discharge line in fluid connection with said expansion chamber through said lateral openings; a tubular extension of said expansion chamber connected thereto and adapted to receive said yarn for compression crimping; and means to collect the crimped yarn from the discharge end of said tubular extension.
  • the compression chamber is modified by providing a fluid conduit arranged near the free or discharge end of the chamber and in fluid connection therewith by means of lateral steam discharge openings in the wall of the chamber.
  • a steam discharge line is thus connected by a manifold to the compression chamber so as to recover residual steam before it condenses or collects on the crimped yarn being withdrawn.
  • the steam discharge openings and manifold at the yarn withdrawal end of the compression chamber can also serve for the injection of hot air. For this purpose it is merely necessary to connect a hot air blower to the fluid conduit.
  • the compression chamber can, if desired, be heated in a conventional manner, eg. by means of a heating jacket supplied with steam or other heat exchange fluid.
  • the injector nozzle may be heated in the same manner.
  • the diameter of the entry passage for the yarn preferably has a value which is about 1.3 to 2.3 times as great as the thickness or diameter of the compact yarn being treated.
  • the diameter or thickness of the yarn refers to the diameter of the initial compact yarn in the form of a cylinder with the individual filaments in parallel contact with one another.
  • the diameter of the yarn is thus the sum of the diameters of the individual filaments on a diametrical line across the cylindrical bundle of filaments.
  • the ratio of the cross-sectional area of the acceleration passage to the total cross-sectional area of all of the steam discharge openings in the expansion chamber is preferably between about 1:3 and 1:60.
  • FIG. l is a sectional view along the longitudinal axis of one embodiment of the apparatus according to the invention, wherein the major proportion of the steam flow is drawn of laterally from the expansion chamber after passing through the acceleration passage;
  • FIG. 2 is a sectional view along the longitudinal axis of another embodiment of the apparatus according to the invention wherein the remaining portion of the steam flow is drawn off laterally shortly before the free end of the compression chamber;
  • FIG. 3 is a partially schematic side elevation view of a suitable combination of apparatus for carrying out the process of the invention wherein the compressed and crimped yarn, after leaving the compression chamber, is conducted to a takeup reel or spool;
  • FIG. 4 is a partially schematic side elevational view of the apparatus combination illustrating a modification in which the compressed and crimped yarn is directly deposited into a canister.
  • a cylindrical casing l is welded to a steam inlet jacket 2 having annular wall 3 extending below the casing 1 to threadably receive a nozzle member 4 which contains a yarn entry passage 5 conically widening out at 6 to provide easy insertion of the yarn.
  • the jacket 2 with nozzle member 4 screwed into the extended wall 3 forms an upper annular chamber 7 and a lower annular chamber 8 which are connected for the passage of steam by the openings 9.
  • the nozzle member 4 is secured against the wall 3 by means of a suitable sealing ring l0, and this nozzle member can be axially adjusted inwardly or outwardly of the casing l.
  • a steam feedline or conduit 1l is connected laterally to the upper chamber 7 of jacket 2 and can be provided with a cap nut 12 for connection to any suitable steam line (not shown) as the source of supply of saturated steam.
  • the nozzle member 4 with its yarn entry passage 5 extends into a flared opening of the casing 1 to provide a constrcted annular steam passage 13 where the steam enters the casing from the lower annular chamber 8.
  • the casing is axially bored, e.g. with a fitting bore or a profiled cross section, so that a tubular and preferably cylindrical sleeve 14 can be interchangeably installed and fixed in position by means of a threaded locking pin l5.
  • the inlet end ldd of the tubular sleeve is preferably tapered to provide a continuation of the flared annular steam passage 13.
  • This tubular sleeve i4 acts as the tubular acceleration channel or passage 16 having a substantially constant diameter.
  • a second tubular sleeve 17 is likewise interchangeably mounted and forms an expansion chamber i8.
  • the cylindrical wall of this second sleeve 17 contains a number of steam discharge openings 19 which should be located at an interval of about 0.5 to 2 times the diameter ofthe chamber 1S from its inlet end, i.e.f ⁇ rom the point of transition from the acceleration passage 16 into the expansion chamber 18.
  • a sufficient number of these openings 19 must be provided to permit at least 50 percent and preferably 70 to 90 percent of the steam to be withdrawn laterally ofthe expansion chamber 18.
  • the upper end of the sleeve insert 17 is centered and held in place by means of a profiled cap or centering member which fits onto the casing 1 is detachably fastened by means of bolts 2l onto a cylindrical jacket 22 welded to the casing 1.
  • the sleeves 14 and 17 Since it is possible to change both of the sleeves 14 and 17 to provide a suitable diameter D1 of the acceleration passage 16 and the proportionately larger diameter D2 of the expansion chamber 18, it is easily possible to vary the ratio D,:Dby appropriate choice of the inner and outer diameters of sleeve 14 and the inner diameter of sleeve 17. This ratio has a pronounced effect on the yarn properties so that by suitable choice of the diameters of these sleeves, one can strongly influence the quality of the yarn.
  • the upper or protruding end leb of the sleeve 14 can be flanged or may have an annular shim or collar fitted around it to conform with a larger inner diameter of the sleeve 17.
  • the casing l and sleeve insert 17 form an inner annular space 23 while the casing 1 and the jacket 22 form an outer annular space 24, both of these spaces being in fluid connection by means of relatively large openings 25 in the casing wall.
  • the outer space 24 is also in fluid connection with a steam discharge line or conduit 26 which serves as an exhaust line for the steam.
  • an elongated cylindrical tube 27 which provides a compression chamber 28 which together with a short central bore 20a in the centering member becomes attached as an extension of the expansion chamber 18.
  • the compression chamber 28 thus has approximately the same diameter as the expansion chamber 18 or may be just slightly larger to accommodate the yarn as it is compressed therein.
  • a protective tube or jacketing member 29 is threadably engaged with the centering member 20 and extends concentrically around the elongated tube 27.
  • a second centering member 30 is constructed to engage both of the tubes 27 and 29 and is securely installed by means of a bayonet or slide lock with two locking pins 31.
  • a central bore 32 in the second centering member 30 serves as the outlet or discharge end of the compression chamber 28.
  • This flanged tubular insert 33 together with the protective tube 29 forms an annular space 34 which is in fluid connection with the outlet of the compression chamber through the openings 35 while also being in fluid connection with the larger steam discharge or air input conduit 36 welded to the wall of the protective tube 29.
  • the upper cap 30 again serves as a locking member connected to the protective tube 29 to prevent any axial displacement ofthe flanged insert 33.
  • FIGS. 3 and l taken together with FIGS. 1 and 2 provide a more detailed explanation of the process of the invention.
  • the jet-operated compression crimping device 37 as generally illustrated in FIGS. 3 and 4 may be in a vertical position with the yam traveling either upwardly or downwardly therethrough. Other positions are also feasible since the propulsion of the yarn and its crimping are selfcontained within the crimping device.
  • the initially uncrimped yam as a compact bundle of filaments is withdrawn from a supply bobbin 38 over a rotating balloon path 39 to a thread guide 40 located over the bobbin.
  • a pair of feed rolls 41 conducts the yam in the direction of the arrow A into the yarn entry passage or nozzle of the crimping device 37.
  • the yarn After the yarn has been crimped and heat set, it is withdrawn in the direction of the arrow B through the transporting rolls 42 so that the finished yam 43 can be taken up by a suitable winding mechanism 44.
  • the yarn is initially supplied downwardly from bobbin 38 over the balloon path 39, through thread guide 40 and into the crimping device 37 by means of feed rolls 41.
  • the crimped and heat set yarn 43 is deposited directly into a canister or pot 44.
  • the uncrimped yam or compact bundle of filaments is initially funneled into the yam entry passage 5 where it emerges into the acceleration passage 16.
  • the steam employed as the propellant gas or vapor enters the device in the direction of the arrow C, i.e. through inlet line ll, passes through the upper annular chamber 7 and into the lower annular chamber 8 through openings 9.
  • the velocity of the steam is then substantially increased as it passes through the constricted passage 13 surrounding the yarn entry passage 5.
  • the axial movement of the threadably engaged nozzle member 4 permits a variation in the annular cross section of the steam passage 13 so as to accurately adjust the velocity of the steam.
  • the steam then conducts or propels the yarn rapidly through the acceleration passage 16 into the expansion chamber 18. At this point, the steam suddenly expands and the yam opens up with an increase in its volume. After the steam flows only several millimeters from the point of entry from the acceleration passage 16 into the expansion chamber I8, a major proportion is discharged through the lateral openings 19. The number and arrangement of these openings can be varied in different interchangeable sleeve inserts 17 so as to adjust the proportion of' steam being withdrawn laterally at this point.
  • the more open or expanded yarn continues to move axially of the device into the compression chamber 28 where it is deposited with a random three-dimensional configuration of the individual filaments.
  • the yam is stuffed and collected temporarily in the relatively elongated chamber 28 where it becomes more densely compressed and strongly crimped.
  • the steam serves to heat set or fix this crimp during the retention time of the yarn in the crimping chamber.
  • the column of crimped yarn which builds up in this chamber 28 is steadily pressed therethrough by the force of subsequently introduced yarn and then emerges from the open or free outlet end of the compression chamber in the direction of the arrow B.
  • the minor proportion of the steam also passes through this chamber and flows from the open end of the compression tube in the direction B when using the embodiment shown in FIG. l.
  • the residue or minor proportion of the steam flowing through compression chamber 28 is preferably drawn off laterally shortly before the open or free outlet end of compression tube 27, e.g. by means of the arrangement shown in FIG. 2.
  • the steam passes laterally through the discharge openings 35 into annular space 34 andlthen outwardly through the steam discharge line 36 in the direction of the arrow E.
  • this steam discharge line it is advantageous to connect this steam discharge line to a low pressure or vacuum source (not shown).
  • a crimped yarn with a very low moisture content can also be achieved in an alternative manner by connecting a hot air source to the conduit 36 and injecting hot air into the outlet end of the compression chamber 28 in the direction of the arrow E' as shown in FIG. 4.
  • a reduction in moisture content can be achieved merely by indirectly heating the compression chamber 28 in an conventional manner, e.g. by using the protective tube 29 as a heating jacket with a heat exchange fluid being introduced into the annular space surrounding the compression chamber tube 27.
  • a more localized heating, e.g. towards the outlet end of the tube 27, can also be accomplished by means of suitable electrical resistance heating elements wrapped around the tube 27 within the protective tube 29. Such heating means have not been illustrated in detail since their general applications are well known.
  • EXAMPLE 1 For the production of a crimped carpet yarn of polyamide (nylon 6) filaments with a total yam size of 3420 denier (380 tex), a texturing device was used which corresponded to that shown in FIGS. 2 and 4 of the drawings, but in which the delivery mechanism 41 shown in FIG. 4 was not used.
  • a texturing device was used which corresponded to that shown in FIGS. 2 and 4 of the drawings, but in which the delivery mechanism 41 shown in FIG. 4 was not used.
  • Diameter of the acceleration passage 16 1.5 mm. Inside diameter of sleeve insert 17 6.0 mm. Diameter of the compression chamber 28 6.0 mm.
  • the injector nozzle was operated to draw off the initial yarn under a thread tension of l2 grams and at a linear velocity of 360 m./min.
  • the yam was collected in the canister 4l and exhibited a spiral crimp with 20 percent crimping contraction, a high volume and excellent crimp stability. From this yarn it was possible to produce a carpet material by the usual methods, for example by twisting and tufting.
  • EXAMPLE 2 For the production of a voluminous textured yam from a bundle of polyamide (nylon) filaments with a total yam size of approximately 3000 denier (330 tex) and with an individual filament size of 18 denier (2 tex), there was used a continuous crimping device as shown in FIGS. 2 and 3.
  • the dimensions of the apparatus were as follows:
  • Diameter of the acceleration passage 16 2 0 mm Inside diameter of sleeve insert 17 6.0 mm. Diameter of the compression chamber 28 6.0 mm.
  • Number of steam discharge openings 19 in insert 17 24 Diameter of the steam discharge openings 19 1.3 mm.
  • the injector nozzle was operated with steam (1.7 atmospheres gauge, 125 C.). Steam was withdrawn through lines 26 and 36 with approximately 80 percent of the total steam input at 1l being discharged through line 26.
  • the crimped and heat-set yarn produced in this manner was distinguished by a very high volume, very good crimping stability and a crimping contraction of 20 percent.
  • thermoplastic multililament yarn which comprises:
  • Apparatus for the continuous compression crimping and heat setting of a synthetic thermoplastic multilament yarn which comprises:
  • annular steam jet nozzle surrounding a tubular yarn entry passage with means to supply steam to said nozzle
  • an interchangeable elongated acceleration tube of substantially constant diameter arranged to receive steam and yarn from said nozzle and entry paage for propulsion longitudinally thereof;
  • a separately interchangeable tubular expansion chamber concentrically mounted at the discharge end of said acceleration tube, said expansion chamber having a larger diameter than said acceleration tube and being provided with lateral openings for the discharge of steam therefrom, said openings being arranged at an interval spaced from the inlet side of said expansion chamber of 0.5 to 2 times the diameter of said chamber;
  • Apparatus as claimed in claim 7 wherein the ratio of the cross-sectional area of the acceleration tube to the total crosssectional area of the lateral openings in said expansion chamber is from about 1:3 to 1:60.
  • Apparatus as claimed in claim 7 wherein a fluid conduit is arranged at the discharge end of said tubular extension in fluid connection with the crimping chamber formed by said extension through a second set of lateral openings.
  • a process as claimed in claim l wherein the yarn being treated has a total yarn size of about 1000-4000 denier.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US814413A 1968-04-11 1969-04-09 Process and apparatus for the continuous compression crimping and setting of a multifilament yarn Expired - Lifetime US3576058A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1760168A DE1760168B2 (de) 1968-04-11 1968-04-11 Verfahren zur kontinuierlichen Stauchkräuselung von aus endlosen thermoplastischen Fäden bestehenden Fadenbündeln

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US814413A Expired - Lifetime US3576058A (en) 1968-04-11 1969-04-09 Process and apparatus for the continuous compression crimping and setting of a multifilament yarn

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US (1) US3576058A (xx)
AT (1) AT312786B (xx)
BE (1) BE730394A (xx)
BR (1) BR6908037D0 (xx)
CH (2) CH514005A (xx)
DE (1) DE1760168B2 (xx)
ES (1) ES365861A1 (xx)
FR (1) FR2006046A1 (xx)
GB (1) GB1258603A (xx)
IL (1) IL31831A (xx)
LU (1) LU58273A1 (xx)
NL (1) NL6905519A (xx)
NO (1) NO125399B (xx)
SE (1) SE343894B (xx)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3650001A (en) * 1970-12-24 1972-03-21 Phillips Petroleum Co Yarn texturing apparatus
US3703754A (en) * 1969-07-24 1972-11-28 Rhodiaceta Process for producing textured thermoplastic yarns
US3810285A (en) * 1970-04-06 1974-05-14 Heathcoat & Co Ltd Method of producing bulked yarns
US3832759A (en) * 1970-05-01 1974-09-03 Akzona Inc Process and apparatus for texturizing yarn
US3965547A (en) * 1970-04-06 1976-06-29 John Heathcoat & Co. Ltd. Apparatus for producing bulked yarns
US4346504A (en) * 1980-07-11 1982-08-31 Hoechst Fibers Industries Yarn forwarding and drawing apparatus
WO2001064982A2 (de) * 2000-03-01 2001-09-07 Barmag Ag Verfahren und vorrichtung zum stauchkräuseln
US8607392B1 (en) 2005-10-05 2013-12-17 Columbia Insurance Company Textile steamer assembly and method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2006022C3 (de) * 1970-02-11 1981-10-15 Basf Ag, 6700 Ludwigshafen Vorrichtung zur Herstellung texturierter Fäden
EP0108205A1 (en) * 1982-10-12 1984-05-16 Maschinenfabrik Rieter Ag Thread treating nozzle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3256582A (en) * 1964-03-04 1966-06-21 Burlington Industries Inc Apparatus and method for bulking yarn
US3296677A (en) * 1963-05-20 1967-01-10 Eastman Kodak Co Crimping apparatus and process
US3303546A (en) * 1964-07-22 1967-02-14 British Nylon Spinners Ltd Apparatus for treating filamentary material in a fluid
US3343240A (en) * 1963-12-27 1967-09-26 Snia Viscosa Method and apparatus for bulking synthetic fibers
US3373470A (en) * 1961-02-08 1968-03-19 Rhodiaceta Process for crimping yarn
US3409956A (en) * 1966-07-05 1968-11-12 Allied Chem Apparatus and process for texturizing yarn

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3373470A (en) * 1961-02-08 1968-03-19 Rhodiaceta Process for crimping yarn
US3296677A (en) * 1963-05-20 1967-01-10 Eastman Kodak Co Crimping apparatus and process
US3343240A (en) * 1963-12-27 1967-09-26 Snia Viscosa Method and apparatus for bulking synthetic fibers
US3256582A (en) * 1964-03-04 1966-06-21 Burlington Industries Inc Apparatus and method for bulking yarn
US3303546A (en) * 1964-07-22 1967-02-14 British Nylon Spinners Ltd Apparatus for treating filamentary material in a fluid
US3409956A (en) * 1966-07-05 1968-11-12 Allied Chem Apparatus and process for texturizing yarn

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3703754A (en) * 1969-07-24 1972-11-28 Rhodiaceta Process for producing textured thermoplastic yarns
US3810285A (en) * 1970-04-06 1974-05-14 Heathcoat & Co Ltd Method of producing bulked yarns
US3965547A (en) * 1970-04-06 1976-06-29 John Heathcoat & Co. Ltd. Apparatus for producing bulked yarns
US3832759A (en) * 1970-05-01 1974-09-03 Akzona Inc Process and apparatus for texturizing yarn
US3650001A (en) * 1970-12-24 1972-03-21 Phillips Petroleum Co Yarn texturing apparatus
US4346504A (en) * 1980-07-11 1982-08-31 Hoechst Fibers Industries Yarn forwarding and drawing apparatus
WO2001064982A2 (de) * 2000-03-01 2001-09-07 Barmag Ag Verfahren und vorrichtung zum stauchkräuseln
WO2001064982A3 (de) * 2000-03-01 2002-03-14 Barmag Barmer Maschf Verfahren und vorrichtung zum stauchkräuseln
US20040031134A1 (en) * 2000-03-01 2004-02-19 Barmag Ag Method and apparatus for stuffer box crimping an advancing multifilament yarn
US6826813B2 (en) 2000-03-01 2004-12-07 Saurer Gmbh & Co. Kg Method and apparatus for stuffer box crimping an advancing multifilament yarn
US8607392B1 (en) 2005-10-05 2013-12-17 Columbia Insurance Company Textile steamer assembly and method

Also Published As

Publication number Publication date
BR6908037D0 (pt) 1973-01-02
FR2006046A1 (xx) 1969-12-19
IL31831A (en) 1972-07-26
IL31831A0 (en) 1969-05-28
AT312786B (de) 1974-01-25
SE343894B (xx) 1972-03-20
CH524369A4 (xx) 1971-06-30
SU370787A3 (xx) 1973-02-15
LU58273A1 (xx) 1969-07-15
DE1760168B2 (de) 1978-08-10
CH514005A (de) 1971-06-30
GB1258603A (xx) 1971-12-30
DE1760168A1 (de) 1971-12-16
ES365861A1 (es) 1971-03-16
NL6905519A (xx) 1969-10-14
BE730394A (xx) 1969-09-01
NO125399B (xx) 1972-09-04

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