EP0122906A2 - Verfahren zur Herstellung von tieffärbbaren gekräuselten Verbundfäden - Google Patents

Verfahren zur Herstellung von tieffärbbaren gekräuselten Verbundfäden Download PDF

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Publication number
EP0122906A2
EP0122906A2 EP84870052A EP84870052A EP0122906A2 EP 0122906 A2 EP0122906 A2 EP 0122906A2 EP 84870052 A EP84870052 A EP 84870052A EP 84870052 A EP84870052 A EP 84870052A EP 0122906 A2 EP0122906 A2 EP 0122906A2
Authority
EP
European Patent Office
Prior art keywords
filament
polymers
spinning speed
speed
sub
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP84870052A
Other languages
English (en)
French (fr)
Other versions
EP0122906A3 (de
Inventor
James Ernest Bromley
Jing-Peir Yu
Hartwig Christian Bach
William Bruce Black
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Monsanto Co
Original Assignee
Monsanto Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Monsanto Co filed Critical Monsanto Co
Publication of EP0122906A2 publication Critical patent/EP0122906A2/de
Publication of EP0122906A3 publication Critical patent/EP0122906A3/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/12—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyamide as constituent
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
    • D01D5/30—Conjugate filaments; Spinnerette packs therefor
    • D01D5/32—Side-by-side structure; Spinnerette packs therefor
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent

Definitions

  • the invention relates to the art of producing melt-spun deep-dyeing conjugate filaments which have latent crimp, and more particularly to directly producing such filaments in a single continuous manufacturing operation.
  • Conjugate filaments which have latent crimp are known and have been in limited commercial use for certain applications.
  • Such filaments or yarns containing such filaments are typically made by melt-spinning dissimilar polymers as side-by-side conjugate filaments at fairly low winding speeds of the order of 1,500 meters per minute (MPM) or less.
  • MPM meters per minute
  • the filaments wound on the spin package are then hot drawn (or drawn and textured) in one or more separate operations to produce filaments with helical crimp.
  • the relatively slow speeds and multiple processing steps are time consuming and relatively expensive, and the product quality is frequently undesirable in such properties as denier uniformity and dyeability.
  • a process for melt-spinning a deep-dyeing conjugate filament having latent helical crimp from first and second dissimilar polymers comprising generating a first molten sub-stream of the first polymer and a second molten sub-stream of the second polymer converging to merge side-by-side as a combined stream before extrusion from the face of a spinneret, quenching the combined stream to form a conjugate filament comprising a first sub-filament of the first polymer conjugated side-by-side with a second sub-filament of the second polymer, and withdrawing the filament from the combined stream at a predetermined spinning speed above 2200 MPM, and winding the filament on a bobbin at a winding speed above 3000 KPM, the polymers, the spinning speed and the winding speed being selected such that the filament wound on the bobbin has a shrinkage greater than 10%.
  • the first sub-stream is nylon 66 and the second sub-stream is poly(ethylene terephthalate).
  • the polymers and the spinning speed are selected such that the filament has a shrinkage greater than 20% and an elongation less than 100%.
  • the filament is drawn at a given draw ratio prior to winding the filament at a higher speed than the predetermined spinning speed, the polymers, the spinning speed, and the draw ratio being selected such that the filament has a shrinkage greater than 20%.
  • the polymers, the spinning speed, and the draw ratio are selected such that the filament has a shrinkage greater than 25%.
  • the polymers, the spinning speed, and the draw ratio are selected such that the filament has an elongation less than 75%.
  • the polymers, the spinning speed, and the draw ratio are selected such that the filament has an elongation less than 50%.
  • polymers are extruded from orifices in spinneret 20 as molten conjugate streams 22.
  • Streams 22 are quenched by transversely moving quench air in quench chamber 24 into filaments 26, the several filaments being converged into a yarn bundle 28.
  • the yarn passes in partial wraps around unheated godets 30 and 32 before passing to winder 34.
  • a conventional spin finish is applied at 36, and the several filaments constituting the yarn can be entangled together by tangle chamber 38.
  • each filament is withdrawn from its associated molten stream at a spinning speed determined by the speed at which godet 30 is driven.
  • the spinning speed must be above 2200 MPM, and is preferably above 3000 MPM.
  • the preferred spinneret orifice design is constructed to merge molten streams of two dissimilar polymers side-by-side as a combined stream before extrusion from face 40 of spinneret 20.
  • Capillaries 42 and 44 each have diameters of 0.254 mm, and converge within the spinneret to form an included angle of 90°.
  • the axes of capillaries 42 and 44 intersect with the plane of face 40 at points 0.15 mm apart.
  • Capillaries 42 and 44 together constitute a combined orifice for spinning a single combined stream, with a first polymer metered through capillary 42 and a second polymer metered through capillary 44.
  • the spinneret would include a number of combined orifices, one for each filament.
  • each stream 22 is a combined stream of the type described in this paragraph.
  • the first and second polymers are dissimilar. That is, the polymers produce melt spun filaments having different levels of shrinkage at high spinning speeds.
  • the preferred first and second polymers are nylon 66 and PET, whose shrinkage variations with spinning speed are qualitatively illustrated in FIGURE 2.
  • the shrinkage of PET yarns are quite high at intermediate spinning speeds of about 3000 MPM, and falls off rapidly from levels of about 50-70% to levels of about 5% or so over a narrow range of spinning speed.
  • the location of the narrow range varies somewhat with capillary diameter (jet stretch) for a given filament denier, but can readily be located for a given capillary and filament denier by spinning at different spinning speeds.
  • the shrinkage behavior of nylon 66 yarns is quite different in that it merely rises slowly over the speed range illustrated to about 5% or so, and does not exhibit the very high values of PET yarns.
  • the side-by-side conjugate filament is spun at a speed greater than 2200 MPM, the spinning speed being selected such that the filament has a shrinkage greater than 10%.
  • the constituent sub- filaments have substantially different shrinkages and the filament will have latent crimp.
  • godet 32 be driven at a higher speed than godet 30 so that yarn 28 is drawn prior to winding.
  • This drawing increases the dye-fastness of the nylon 66 component to disperse dyes and generally increases the crimp level in the yarn.
  • the drawing is sufficient to reduce the yarn elongation to below 75%, with best results achieved when the yarn elongation is reduced to below 50%.
  • the speed of godet 32 is increased to 4500 MPM so as to apply an in-line draw to the yarn.
  • the dye-fastness of the nylon 66 component to disperse dyes is substantially increased, and the yarn continues to dye deeper than prior art yarns which have been hot drawn or textured by the false-twist method.
  • the latent crimp in the yarn is also increased by the step of drawing immediately after quenching and before winding.
  • Yarn shrinkage is determined by the following method.
  • the bobbin is conditioned at 21 °C and 65% relative humidity for one day prior to testing. 100 meters of surface yarn are stripped off and discarded.
  • the yarn is wound to form a skein having about 18,000 skein denier. That is, the denier reel revolutions are 9000 divided by the yarn denier.
  • the skein yarn ends are tied together.
  • the skein is suspended from a rod having a diameter of one centimeter and a 1000 gram weight is attached to the bottom of the skein. After 30 seconds, the skein length is measured to provide length L1.
  • the 1000 gram weight is then replaced by a 50 gram.weight, whereupon the rod with skein and 50 gram weight are placed in a vigorously boiling water bath sufficiently deep that the skein is under tension from the 50 gram weight. After 10 minutes in the boiling water bath, the rod with skein and the 50 gram weight are removed from the bath and hung up for three minutes to permit excess water to drain off. The rod with skein and suspended 50 gram weight are then placed in a 120°C oven for 15 minutes, after which the rod with skein and suspended 50 gram weight are removed from the oven and hung for 15 minutes at room temperature. The suspended 50 gram weight is then removed and replaced by a 1000 gram weight. After 30 seconds, the skein length is is measured to provide L2. The % shrinkage is defined as 100(L1 - L2) divided by L1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Multicomponent Fibers (AREA)
EP84870052A 1983-04-11 1984-04-10 Verfahren zur Herstellung von tieffärbbaren gekräuselten Verbundfäden Withdrawn EP0122906A3 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US48411083A 1983-04-11 1983-04-11
US484110 1983-04-11
US56542483A 1983-12-27 1983-12-27
US565424 1983-12-27

Publications (2)

Publication Number Publication Date
EP0122906A2 true EP0122906A2 (de) 1984-10-24
EP0122906A3 EP0122906A3 (de) 1986-02-05

Family

ID=27047864

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84870052A Withdrawn EP0122906A3 (de) 1983-04-11 1984-04-10 Verfahren zur Herstellung von tieffärbbaren gekräuselten Verbundfäden

Country Status (1)

Country Link
EP (1) EP0122906A3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101277916B1 (ko) * 2005-05-20 2013-06-21 스미또모 가가꾸 가부시키가이샤 중합체 조성물 및 그것을 이용한 고분자 발광 소자

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3423923A (en) * 1965-10-29 1969-01-28 Du Pont Crimped multifilament yarn
DE2009618A1 (en) * 1969-04-14 1970-10-15 Polycomponent filaments from synthetic - linear high polymers
GB2003423A (en) * 1977-08-17 1979-03-14 Monsanto Co Self crimping yarn and process
DE2366181B1 (de) * 1972-08-15 1980-11-13 Kanebo Ltd Verfahren zum Herstellen von Florteppichen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3423923A (en) * 1965-10-29 1969-01-28 Du Pont Crimped multifilament yarn
DE2009618A1 (en) * 1969-04-14 1970-10-15 Polycomponent filaments from synthetic - linear high polymers
DE2366181B1 (de) * 1972-08-15 1980-11-13 Kanebo Ltd Verfahren zum Herstellen von Florteppichen
GB2003423A (en) * 1977-08-17 1979-03-14 Monsanto Co Self crimping yarn and process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101277916B1 (ko) * 2005-05-20 2013-06-21 스미또모 가가꾸 가부시키가이샤 중합체 조성물 및 그것을 이용한 고분자 발광 소자

Also Published As

Publication number Publication date
EP0122906A3 (de) 1986-02-05

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Inventor name: BACH, HARTWIG CHRISTIAN

Inventor name: BLACK, WILLIAM BRUCE

Inventor name: BROMLEY, JAMES ERNEST

Inventor name: YU, JING-PEIR