US3435497A - Strand treatment - Google Patents

Strand treatment Download PDF

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Publication number
US3435497A
US3435497A US670147A US3435497DA US3435497A US 3435497 A US3435497 A US 3435497A US 670147 A US670147 A US 670147A US 3435497D A US3435497D A US 3435497DA US 3435497 A US3435497 A US 3435497A
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Prior art keywords
strand
accumulation
chamber
crimped
crimp
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Expired - Lifetime
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US670147A
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English (en)
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Robert Kenneth Stanley
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Techniservice Corp
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Techniservice Corp
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Publication date
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/76—Depositing materials in cans or receptacles
    • B65H54/84—Arrangements for compacting materials in receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • ROBERT K STANLEY BY u ya firm/ma.
  • This invention relates to treatment of textile strands, particularly by compressive crimping thereof as in a stulfer crimper.
  • a primary object of the present invention is novel application of back pressure in a stuffer crimper.
  • Another object is enhanced uniformity of back pressure in a stuffer crimping process.
  • a further object is advantageous control of the degree of crimp imparted to a strand by stuffer crimping.
  • FIG. 1 is a schematic representation of the processing of textile strand according to the present invention
  • FIG. 2 is a front elevation of component stufler crimping apparatus
  • FIG. 3 is a side elevation of the apparatus of FIG. 2;
  • FIG. 4 is a sectional plan, taken at IV-IV on FIG. 3;
  • FIG. 5 is a fragmentary plan view, on an enlarged scale, taken at VV on FIG. 3;
  • FIG. 6 is a front sectional elevation, taken at VIVI on FIG. 5;
  • FIG. 7 is an exploded perspective view of the apparatus of FIGS. 5 and 6;
  • FIG. 8 is -a front sectional elevation, on an intermediate scale, of a modification in the apparatus of the preceding views.
  • the objects of the present invention are accomplished in treatment of a textile strand to crimp it, wherein the strand is stulfed into the entrance of a laterally confining region in which it accumulates temporarily and is crimped and from which it is subsequently withdrawn through an exit thereof, by applying fluid pressure to the strand accumulation to compress it before the crimped strand exits from the confining region.
  • FIG. 1 shows, schematically, strand 10 unwinding from conical package 11 to pass through guide 12 and successive pairs of nip rolls 13, 13 and 15, 15, with heater 14 for the strand intervening between the pairs of rolls.
  • Cap 21 at the exit end of the chamber has tube 21a joining one side thereof.
  • Crimped strand 10' is withdrawn from the exit of the chamber and is wound onto cylin drical package 20 by grooved traversing drive roll 19.
  • FIGS. 2, 3, and 4 show stufier-crimping components and associated elements (FIGS. 2 and 3 only) of the same apparatus in front and side elevation and plan, respectively.
  • FIG. 4 is partly in section, and the strand shown in FIGS. 2 and 3 is omitted from FIG. 4 for clarity.
  • Stufling chamber 18 is supported on the front leg of inverted 'U-frame 22.
  • Shafts 27, 27 for respective feed rolls 17, 17' are journaled in the front and rear walls of the frame and have intermeshing gears 37, 37' thereon behind the rear leg of the frame.
  • Shaft 27' also has driven pulley 29 thereon.
  • Motor 31 on the horizontal upper surface of the frame has shaft 32 on which is drive pulley 33.
  • Belt 34 interconnects drive pulley 33 and driven pulley 29 to transmit rotational force to the gears, shafts, and feed rolls themselves. The direction of rotation is such as to feed or stuff the strand by and between the counter-rotating feed rolls into the chamber entrance.
  • Strand-traversing means 16 through which the strand passes immediately ahead or upstream of the feed rolls moves the strand back and forth along the roll nip for optimum distribution of strand in the entrance portion of the chamber.
  • Tube 2.1a which joins cap 21 at the exit end of the chamber, has valve 38 and pressure gage 39 therein, the view being broken off as the tube extendsto a source (not shown) of fluid under pressure, which may be provided from the atmosphere or otherwise.
  • FIGS. 5, 6, and 7 show the downstream or exit end portion of stufiing chamber 18 in plan, front sectional elevation, and in exploded perspective, respectively, including cap 21.
  • the cap has central opening 41 coaxial with the stufiing chamber for the crimped yarn to be withdrawn through and has underlying collar 42 spaced from the surrounding wall of the cap.
  • spacer 45 Between the cap and the end of the stuffing chamber is spacer 45, which has small axial bore 47 to accommodate the strand and also has openings 48 spaced about the bore.
  • Gasket 51 seals the spacer to the end of the stufling chamber.
  • Similar gasket 53 seals the spacer to the surrounding wall of the cap, while smaller gasket 52 seals the spacer to collar 42 of the cap.
  • Annular space 55 defined between the cap and the spacer communicates with the exterior through adjoining tube 21a, which passes through the cap wall, and with the interior of the stuffing chamber through openings 48.
  • fluid injected into space 55 from tube 21a passes through openings 48 into the interior of stufling chamber 18, whose lower portion contains accumulation 10a of crimped strand.
  • the force of the fluid is applied, as also indicated by arrows, to the strand accumulation as well as the chamber wall.
  • Such force supplements the wall friction exerted against the strand accumulation and the strand weight (in the illustrated chamber orientation) to compress the strand into its distorted or crimped configuration.
  • Crimped strand Withdrawn from compressed strand accumulation 10a passes through small bore 47 in the spacer and out of the pressurized interior of the chamber. Of course, some fluid leaks out along with the strand, but it is a small quantity.
  • Such leaking fluid also serves to expand the crimped strand as the fluid expand to the atmospheric pressure outside, thereby increasing the apparent bulk of the strand and tending to dephase adjacent bends or crimps as is desirable and also tending to remove any slubs or the like.
  • crimp level such as frequency and extent
  • a feature of the present invention is controlling the crimp level by appropriate adjustment of the applied fluid pressure. Increasing the fluid pressure increases the frequency or extent (or both) of crimp while decreasing it decreases the crimp level, permitting a fine adjustment therein without necessity for changing windup speed. Valve 38 facilitates such pressure adjustment.
  • the fluid pressure and flow rates to be used are in large part determined by the characteristics of the strand being crimped and the particular physical dimensions of the apparatus used, as well as the degree of effect desired.
  • a pressure on the order of several pounds per square inch above atmospheric will produce a readily detectable change in crimp level.
  • some change in crimp may be detected as the pressure is changed only one p.s.i. or so.
  • the most convenient fluid to use is air, which may be applied at whatever temperature is desired, preferably heated, although if obtained directly from the surrounding atmosphere it may be left at room temperature to aid gradual cooling in the chamber or even be cooled when it is desired to cool the strand more quickly.
  • Its moisture content may be adjusted as desired, and may comprise steam, preferably superheated so as to avoid condensation in the chamber.
  • Additives, such as oils, moisteners, or finishes may be included in vapor or droplet form, as desired.
  • the back pressure applied to the strand accumulation may be supplemented by insertion of a solid weight in the stufling chamber, as illustrated in FIG. 8.
  • weight 58 having axial bore 59 therethrough fits slidably inside the chamber and rests on strand accumulation 10a. As indicated by the arrows the weight presses downward, under gravitational force as well as the applied fluid force, and aids in compression of the strand being crimped.
  • Such a weight may be useful with particularly large or stiff strands and will permit a shortening of the stufling chamber while still permitting unsynchronized constant-speed windup.
  • the improvement comprising injecting fluid into the unfilled portion of the confining region and thereby applying fluid pressure to the strand accumulation to compress it before the crimped strand exits from the confining region.
  • Process of controlling the crimp imparted to a textile strand by stuffer crimping comprising stufling the strand into a laterally confining region at a first rate to accumulate temporarily under compression and then be withdrawn from the compressed accumulation thereof, applying fluid pressure to the compressed strand accumulating to the confining region from a location between the leading edge of the strand accumulation and the exit, and withdrawing crimped strand lengthwise from the leading edge thereof at a location spaced from the exit and from the confining region and the fluid pressure therein at a second rate less than the first rate.
  • Process of controlling the crimp imparted to a textile strand by stulfer crimping comprising stufling the strand into a laterally confining region at a first rate to accumulate temporarily under compression and then be withdrawn from the compressed accumulation thereof, applying fluid pressure to the compressed trand accumulating in the confining region from a location between the strand accumulation and the exit, and withdrawing crimped strand from the accumulation thereof and from the confining region and the fluid pressure therein at a second rate less than the first rate, wherein the crimp in the strand is varied by varying the temperature of the applied fluid.
  • Process of controlling the crimp imparted to a textile strand by stutter crimping comprising stuffing the strand into a laterally confining region at a first rate to accumulate temporarily under compression and then be withdrawn from the compressed accumulation thereof, applying fluid pressure to the compressed trand accumulating in the confining region from a location between the strand accumulation and the exit, and withdrawing crimped strand from the accumulation thereof and from the confining region and the fluid pressure therein at a second rate less than the first rate, wherein the crimp in the strand is varied by varying the moisture content of the applied fluid.
  • Process of controlling the crimp imparted to a textile strand by stulfer crimping comprising stuffing the strand into a laterally confining region at a first rate to accumulate temporarily under compression and then be withdrawn from the compressed accumulation thereof, applying fluid pressure to the compressed strand accumulating in the confining region from a location between the References Cited UNITED STATES PATENTS 3,152,379 10/1964 Osban 281 2,854,701 10/1958 Rainard.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US670147A 1967-09-25 1967-09-25 Strand treatment Expired - Lifetime US3435497A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67014767A 1967-09-25 1967-09-25

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US3435497A true US3435497A (en) 1969-04-01

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US670147A Expired - Lifetime US3435497A (en) 1967-09-25 1967-09-25 Strand treatment

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US (1) US3435497A (enrdf_load_stackoverflow)
BE (1) BE721274A (enrdf_load_stackoverflow)
DE (1) DE1785437A1 (enrdf_load_stackoverflow)
FR (1) FR1583022A (enrdf_load_stackoverflow)
GB (1) GB1197116A (enrdf_load_stackoverflow)
LU (1) LU56963A1 (enrdf_load_stackoverflow)
NL (1) NL6813697A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3593395A (en) * 1969-04-28 1971-07-20 Robert K Stanley Strand treatment
US3644968A (en) * 1968-12-31 1972-02-29 Ici Ltd Apparatus for relaxing yarns
US3778872A (en) * 1971-04-12 1973-12-18 Phillips Petroleum Co Method and apparatus for texturing yarn
US3808652A (en) * 1968-12-31 1974-05-07 D Elliott Treatment of yarns
US3921380A (en) * 1974-05-31 1975-11-25 Indian Head Inc Crimped continuous filament yarn and method
DE2155094C3 (de) 1970-11-06 1977-08-18 Ausscheidung in 21 67 005 Phillips Petroleum Co, Bartles ville, OkIa (VStA) Vorrichtung zum Krausein von Garn

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2854701A (en) * 1956-03-07 1958-10-07 Bancroft & Sons Co J Crimping method and apparatus
US3108352A (en) * 1960-05-23 1963-10-29 Monsanto Chemicals Discharge chute for stuffer crimpers
GB953782A (en) * 1961-02-08 1964-04-02 Rhodiaceta Process for crimping thermoplastic yarns, apparatus for carrying out such process and new yarns thereby obtained
US3152379A (en) * 1962-05-29 1964-10-13 American Cyanamid Co Tow crimper closure
US3174208A (en) * 1959-07-16 1965-03-23 Air Reduction Process of crimping fibers derived from polyvinyl alcohol
US3340585A (en) * 1964-08-20 1967-09-12 Courtaulds Ltd Yarn crimping method and apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2854701A (en) * 1956-03-07 1958-10-07 Bancroft & Sons Co J Crimping method and apparatus
US3174208A (en) * 1959-07-16 1965-03-23 Air Reduction Process of crimping fibers derived from polyvinyl alcohol
US3108352A (en) * 1960-05-23 1963-10-29 Monsanto Chemicals Discharge chute for stuffer crimpers
GB953782A (en) * 1961-02-08 1964-04-02 Rhodiaceta Process for crimping thermoplastic yarns, apparatus for carrying out such process and new yarns thereby obtained
US3152379A (en) * 1962-05-29 1964-10-13 American Cyanamid Co Tow crimper closure
US3340585A (en) * 1964-08-20 1967-09-12 Courtaulds Ltd Yarn crimping method and apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3644968A (en) * 1968-12-31 1972-02-29 Ici Ltd Apparatus for relaxing yarns
US3808652A (en) * 1968-12-31 1974-05-07 D Elliott Treatment of yarns
US3593395A (en) * 1969-04-28 1971-07-20 Robert K Stanley Strand treatment
DE2155094C3 (de) 1970-11-06 1977-08-18 Ausscheidung in 21 67 005 Phillips Petroleum Co, Bartles ville, OkIa (VStA) Vorrichtung zum Krausein von Garn
US3778872A (en) * 1971-04-12 1973-12-18 Phillips Petroleum Co Method and apparatus for texturing yarn
DE2167005A1 (de) * 1971-04-12 1977-06-16 Phillips Petroleum Co Verfahren und vorrichtung zum kraeuseln von garn
US3921380A (en) * 1974-05-31 1975-11-25 Indian Head Inc Crimped continuous filament yarn and method

Also Published As

Publication number Publication date
DE1785437A1 (de) 1971-05-27
NL6813697A (enrdf_load_stackoverflow) 1969-03-27
LU56963A1 (enrdf_load_stackoverflow) 1969-01-08
FR1583022A (enrdf_load_stackoverflow) 1969-10-10
GB1197116A (en) 1970-07-01
BE721274A (enrdf_load_stackoverflow) 1969-03-03

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