US3440699A - Process and apparatus for strand treatment - Google Patents

Process and apparatus for strand treatment Download PDF

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Publication number
US3440699A
US3440699A US671818A US3440699DA US3440699A US 3440699 A US3440699 A US 3440699A US 671818 A US671818 A US 671818A US 3440699D A US3440699D A US 3440699DA US 3440699 A US3440699 A US 3440699A
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United States
Prior art keywords
strand
bed
crimped
chamber
withdrawn
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US671818A
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English (en)
Inventor
Robert Kenneth Stanley
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Techniservice Corp
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Techniservice Corp
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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

Definitions

  • Stulfer crimping is a well known technique for imparting bulk, cover, and extensibility to textile strands, especially those having component continuous filaments.
  • Examples of stufifer crimpers appear in my US. Patents 3,279,025 and 3,280,444.
  • the extensibility of the crimped product may be greater than desired,
  • a primary object of the present invention is an improved crimp stabilization of textile strands.
  • Another object is reduction in extensibility of stuifercrimped textile strands.
  • a further object is provision of apparatus for accomplishing the foregoing.
  • FIG. 1 is a front elevation, part-1y schematic in form, of a stutter crimper incorporating the present invention
  • FIG. 2 is a side elevation of the apparatus of FIG. 1;
  • FIG. 3 is a sectional plan of the same apparatus, taken at III-III on FIG. 2;
  • FIG. 4 is an enlarged sectional elevation of a portion of the apparatus, taken at IV-IV on FIG. 2;
  • FIG. 5 is a sectional plan taken at VV on FIG. 4.
  • the objects of the present invention are accomplished, in a stutfer crimper having a stufiing chamber in which crimped textile strand accumulates before being withdrawn therefrom, by means of a particulate bed spaced from the strand accumulation and through which the crimped strand is withdrawn.
  • the bed preferably comprises solid spherules and is impregnated with steam.
  • FIG. 1 shows from the front, FIG. 2 from the side and FIG. 3 in plan (sectioned through the stuifing chamber) stutter-crimping apparatus including, in the direction of strand passage therethrough as indicated by arrows, a pair of forwarding rolls 11, 11' gripping strand on opposite sides, and preheater 12 which is activated by internal electrical resistance heating elements or by injection of steam or other hot fluid.
  • preheater 12 which is activated by internal electrical resistance heating elements or by injection of steam or other hot fluid.
  • the stuffing chamber terminates at its exit in housing 15, from which the strand is withdrawn by additional pair of rolls 16, 16.
  • the chamber is supported on the front wall of frame 22, which has an inverted U-shape in side elevation.
  • Crimped strand 10' withdrawn from the strand accumulation in the chamber is withdrawn by rolls 16, 16' through the upper part of the chamber and through the nip of pair of tensioning rolls 40, 40 mounted therein on axles 41, 41' journaled in the chamber wall.
  • Axle 41' is extended outside and carries retarding roll 43 over which passes belt 44, which is fastened at its upper end to the chamber wall by clip 45 and at its lower end carries weight 46. Drag of the belt on the retarding roll imparts tension to the crimped strand passing through the nip of the tensioning rolls.
  • the tension is adjustable by varying weight 46.
  • Housing 15 into and through which the strand passes has inverted conical wall 51 defining a bed open upward and having entrance 50 at the apex of the cone at the bottom of the bed.
  • the bed contains numerous solid spherules made of ceramic or other suitable material too large to fall out through the strand entrance.
  • the strand is withdrawn upwardly by rolls 16, 16 and passes among the spherules and out from the top of the bed, the resultant strand being denoted as 10" in recognition of the fact that its characteristics differ somewhat from those of initially crimped strand 10'.
  • the bed is surrounded laterally by a hollow jacket, which receives entrance pipes 53 and 53' communicating therewith through the outer wall of the housing.
  • the bottom wall has apertures 55, 55' of very small cross-section therein for drainage of any condensate such as water condensed from steam carried by the pipes to the jacket from a conventional generator thereof (not shown).
  • the steam enters the bed through apertures 57 near the base thereof, each of which is provided with a low-pressure valve, as by the spring 58 and ball 59 type of combination shown in FIG. 5.
  • the strand is stufter crimped and then is withdrawn from the accumulation thereof compressed in the stufiing chamber and is withdrawn through the particulate bed, which is shown as comprising solid spherules large in diameter as compared with the strand.
  • the strand is under a tension on account of the weight of strand suspended above the accumulation from which it was withdrawn and whatever tension is applied by the tensioning rolls and associated components of the restraining means, which could be replaced by a long length of supported strand although to do so would be wasteful of equipment, materials and space otherwise conserved by using such restraining means.
  • the strand must not pass directly from the compressed mass to the bed without imposition of tension therebetween or the crimp will be impaired.
  • the bed is preferably heated, and steam may be injected int-o it, with the result of improving stabilization of the crimp configuration at the re sulting length, which is intermediate between the original uncrimped length and the first crimped length.
  • Steam at a pressure from several to a dozen pounds per square inch above atmospheric can be used.
  • the ambient moisture may suffice upon injection of otherwise dry hot gas, such as air.
  • air at ambient temperature can be used with some success, althrough moderate heating may still be desirable, especially at relatively high processing speeds. In general, it is preferred to keep the strand about as warm as it was when it passed into the chamber entrance for so long as any change in the configuration thereof is being effected, and preferably without overheating it.
  • a 1040 denier 6-nylon strand of 68 filaments when stutter crimped had an elongation or extensibility of 10% under a tension of 100 grams.
  • Under 100 grams tension the elongation or extensibility thereof proved to be only 1%.
  • the same reduced extensibility prevailed throughout normal winding and handling of the strand, even when reheated weeks later.
  • Aftertreatment for crimped textile strands comprising pulling a crimped textile strand through a steam-impregnated particulate bed and thereby reducing the crimp level and stabilizing the crimp at reduced level.
  • a stuffer crimper having a stufiing chamber in which crimped textile strand accumulates before being withdrawn therefrom, the improvement comprising means for applying restraining tension to a strand withdrawn from the strand accumulation and being withdrawn from the chamber, and a particulate bed spaced from the restraining means and through which the strand is then withdrawn.
  • Stuffer crimper according to claim 5, wherein the restraining means comprises a roll arranged to come into essentially non-slipping contact with the strand.
  • the particulate bed comprises a multiplicity of spherules and a container thereof, the container having below the surface of the bed an entrance for the strand and having above the surface of the bed an exit for the strand, and
  • Stuffer crimper comprising a vertical confining chamber having at its lower end an entrance for textile strand to be stuffed thereinto and to be accumulated temporarily and be crimped therein, feed means for stufling strand into the chamber entrance, a particulate bed located near the upper end of the chamber and above the maximum level at which crimped strand normally accumulates before being withdrawn from the chamber, the chamber being free of non-particulate strand-impeding means at and above the level of the bed, and means for withdrawing the crimped strand from the accumulation thereof and then through the particulate bed.
  • Stuffer crimper according to claim 12 wherein the particulate bed is heated 15.
  • Stuffer crimper comprising a vertical confining chamber having at its lower end an entrance for textile strand to be stuffed thereinto and to be accumulated temporarily and be crimped therein, feed means for stufling strand into the chamber entrance, a particulate bed located near the upper end of the chamber and above the maximum level at which crimped strand normally accumulates before being withdrawn from the chamber, means for withdrawing the crimped strand from the accumulation thereof and then through the particulate bed, and means for injecting steam into the bed.
  • Stutfer crimper according to claim 16, wherein the steam-injection means includes valve mechanism to limit the pressure at which the steam is injected into the bed.
  • Stuffer crimper according to claim 16, including strand-tensioning means spaced below the particulate bed and above the level of normal crimped strand accumulation in the chamber.
  • a wall portion in the configuration of an inverted cone housing the particulate bed and having at its apex an opening large enough to pass the strand but too small to pass particles from the particulate bed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US671818A 1967-09-29 1967-09-29 Process and apparatus for strand treatment Expired - Lifetime US3440699A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67181867A 1967-09-29 1967-09-29

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US3440699A true US3440699A (en) 1969-04-29

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US671818A Expired - Lifetime US3440699A (en) 1967-09-29 1967-09-29 Process and apparatus for strand treatment

Country Status (8)

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US (1) US3440699A (enrdf_load_stackoverflow)
BE (1) BE721275A (enrdf_load_stackoverflow)
CH (2) CH512602A (enrdf_load_stackoverflow)
DE (1) DE1785488A1 (enrdf_load_stackoverflow)
FR (1) FR1584839A (enrdf_load_stackoverflow)
GB (1) GB1233029A (enrdf_load_stackoverflow)
LU (1) LU56960A1 (enrdf_load_stackoverflow)
NL (1) NL6813765A (enrdf_load_stackoverflow)

Cited By (5)

* 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
US3678547A (en) * 1970-11-06 1972-07-25 Phillips Petroleum Co Yarn texturing
US3693222A (en) * 1970-12-28 1972-09-26 Phillips Petroleum Co Yarn texturing apparatus
US3936916A (en) * 1974-05-09 1976-02-10 Phillips Petroleum Company Method and apparatus for the production of textured yarn
DE3802112A1 (de) * 1987-02-06 1988-08-18 Barmag Barmer Maschf Falschzwirnkraeuselvorrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL264406A (enrdf_load_stackoverflow) *
US2949659A (en) * 1956-05-24 1960-08-23 American Enka Corp Crimping apparatus
US2971242A (en) * 1956-02-18 1961-02-14 British Rayon Res Ass Fluidised beds
GB883119A (en) * 1958-08-06 1961-11-22 Barmag Barmer Maschf Improvements relating to crimping apparatus for synthetic yarns
US3153271A (en) * 1961-12-05 1964-10-20 American Enka Corp Yarn crimping apparatus
US3153837A (en) * 1959-04-30 1964-10-27 Barmag Barmer Maschf Device for crimping synthetic threads

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL264406A (enrdf_load_stackoverflow) *
US2971242A (en) * 1956-02-18 1961-02-14 British Rayon Res Ass Fluidised beds
US2949659A (en) * 1956-05-24 1960-08-23 American Enka Corp Crimping apparatus
GB883119A (en) * 1958-08-06 1961-11-22 Barmag Barmer Maschf Improvements relating to crimping apparatus for synthetic yarns
US3153837A (en) * 1959-04-30 1964-10-27 Barmag Barmer Maschf Device for crimping synthetic threads
US3153271A (en) * 1961-12-05 1964-10-20 American Enka Corp Yarn crimping apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3678547A (en) * 1970-11-06 1972-07-25 Phillips Petroleum Co Yarn texturing
US3650001A (en) * 1970-12-24 1972-03-21 Phillips Petroleum Co Yarn texturing apparatus
US3693222A (en) * 1970-12-28 1972-09-26 Phillips Petroleum Co Yarn texturing apparatus
US3936916A (en) * 1974-05-09 1976-02-10 Phillips Petroleum Company Method and apparatus for the production of textured yarn
DE3802112A1 (de) * 1987-02-06 1988-08-18 Barmag Barmer Maschf Falschzwirnkraeuselvorrichtung

Also Published As

Publication number Publication date
NL6813765A (enrdf_load_stackoverflow) 1969-04-01
CH1456668A4 (enrdf_load_stackoverflow) 1971-05-28
DE1785488A1 (de) 1972-02-10
LU56960A1 (enrdf_load_stackoverflow) 1969-01-08
BE721275A (enrdf_load_stackoverflow) 1969-03-03
GB1233029A (enrdf_load_stackoverflow) 1971-05-26
CH512602A (fr) 1971-05-28
FR1584839A (enrdf_load_stackoverflow) 1970-01-02

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