EP0013186B1 - Procédé de filage par fusion d'un filament conjugué susceptible de se fendre; filament conjugué, à frisure latente, susceptible de se fendre; procédé de refente d'un tel filament - Google Patents

Procédé de filage par fusion d'un filament conjugué susceptible de se fendre; filament conjugué, à frisure latente, susceptible de se fendre; procédé de refente d'un tel filament Download PDF

Info

Publication number
EP0013186B1
EP0013186B1 EP79303081A EP79303081A EP0013186B1 EP 0013186 B1 EP0013186 B1 EP 0013186B1 EP 79303081 A EP79303081 A EP 79303081A EP 79303081 A EP79303081 A EP 79303081A EP 0013186 B1 EP0013186 B1 EP 0013186B1
Authority
EP
European Patent Office
Prior art keywords
filament
filaments
sub
conjugate
hollow
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.)
Expired
Application number
EP79303081A
Other languages
German (de)
English (en)
Other versions
EP0013186A1 (fr
Inventor
Jing-Peir Yu
James Ernest Bromley
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 EP0013186A1 publication Critical patent/EP0013186A1/fr
Application granted granted Critical
Publication of EP0013186B1 publication Critical patent/EP0013186B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • 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
    • D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor

Definitions

  • the invention relates to the art of conjugate filaments splittable into sub-filaments. More particularly, it relates to a process and product wherein the conjugate filament itself has no substantial texture while sub-filaments splittable therefrom have substantial latent torqueless helical crimp.
  • Conjugate filaments splittable into sub-filaments are known to the art, as typified by Hayashi U.S. Patent 4,051,287. As disclosed therein, alternating segments of polyamide and polyester are spun in a side-by-side adhering relationship to form a hollow filament splittable into sub-filaments. Such sub-filaments can be of smaller denier than can be conveniently spun as separate filaments, lending a soft hand to fabrics made therefrom.
  • the sub-filaments of Hayashi are not disclosed as possessing significant crimp, and, as illustrated in Figure 10 of the patent, are substantially flat (untextured) even though the conjugate filament had been textured by the false-twist heat-set method before being split into sub-filaments.
  • Tanner U.S. Patent 3,117,906 describes a process comprising generally preparing a grey fabric from yarn comprising composite filaments comprising at least two different synthetic polymeric components adhered together in side-by-side relation throughout substantially the entire length of the filament, said different components having different shrinkage characteristics when subjected to heat; subjecting the fabric to a treatment involving controlled conditions whereby the different components are separated to form separate filaments and heating the fabric to effect shrinkage of the filaments, the heating being of sufficient duration and intensity to cause the filaments from the different synthetic polymeric compositions to shrink to a substantially different degree.
  • the differential shrinkage causes the filaments that shrink less to be pulled into crimped and looped configurations and the fabric is thereby bulked, but the filaments do not themselves possess latent torqueless helical crimp.
  • the process of the present invention is one for melt-spinning a hollow conjugate filament, splittable into sub-filaments, from nylon 66 and polyethylene terephthalate polymers axially arranged in an adhering relationship, the process comprising:-
  • the invention also comprises a conjugate filament of nylon 66 and polyethylene terephthalate polymers axially arranged in an adhering relationship, sub-filaments of said filament being releasably attached to one another in a side-by-side relationship, and said filament being substantially free of crimp, characterised in that unicomponent sub-filaments split from said conjugate filament possess substantial latent torqueless helical crimp.
  • the invention also includes a method comprising splitting a conjugate filament according to the invention into unicomponent sub-filaments.
  • the filament is hollow.
  • the preferred spinneret construction includes several generally arched or horseshoe-shaped slots 20 in spinneret blank 22 arranged symmetrically about a central point, the open ends of the horseshoe shape facing inwardly.
  • the several slots 20 constitute a combined orifice for spinning a single filament. Slots 20 extend entirely through blank 22 except for a recessed web region 24 at the apex of each slot 20.
  • the two dissimilar polymers are fed to the combined orifice as a sheath-core stream, with dotted circle 26 representing the interface between the two polymers.
  • the adjacent ends of adjacent slots 20 are sufficiently close that the streams issuing therefrom unite just below the spinneret.
  • the molten stream is thus a hollow structure composed of alternating axially extending segments of the two polymers. Surface tension and other effects tend to make the molten stream approach a hollow circular cross-section prior to solidification, substantially as shown in Hayashi Figure 1.
  • Each polymer segment accordingly has a portion of its periphery exposed to quenching on the exterior of the hollow stream, and an opposite portion shielded and not so exposed since it lies in the interior.
  • the molten steam is exposed while under the stress of spinning to quenching sufficiently rapid as to produce substantial latent torqueless helical crimp in the sub-filaments splittable from the conjugate filament.
  • Nylon 66 polymer and polyethylene terephthalate polymer are extruded at a temperature of 290°C through the combined orifice, the nylon polymer being the core of the sheath-core stream approaching the combined orifice.
  • Equal volumes of the two polymers are supplied, with the extrusion rate selected to produce a conjugate filament having a denier of 19.5 at a spinning speed of 1500 yards (about 1350 meters) per minute.
  • a quench zone just beneath the spinneret and 1 t meters in height is supplied with quenching air at 20°C, the air being directed horizontally onto the polymer stream and having a speed of 25 meters per minute. Below the quench zone, steam is applied to the filament, a conventional finish is applied, and the filament is wound.
  • the spun filament is then drawn at 65 meters per minute and at a draw ratio of 2.16 over a contact heater at 132°C, the heater being 0.4 meters long.
  • the resulting drawn yarn when mechanically worked to break the conjugate filament into 12 sub-filaments, develops no substantial torqueless helical crimp when subjected to boiling water.
  • Example I is repeated, except that the spinning speed is increased to 4500 meters per minute while the denier of the conjugate filament is reduced to 4.
  • the resulting sub-filaments after separation and immersion in boiling water, form a highly voluminous and lofty yarn.
  • Fabrics formed from the conjugate yarn acquire a very soft hand and increased bulk and covering power when the fabric is mechanically worked enough to separate the yarn into sub-filaments. Simple exposure of the fabric to boiling water is adequate in many instances, since the flexing of the yarn involved in certain fabric formations separates the sub-filaments.

Claims (4)

1. Procédé de filature par extrusion d'un filament conjugué creux, pouvant être dissocié en sous-filaments, à partir de polymères de nylon 66 et de téréphtalate de polyéthylène, disposés axialement en étant adhérents, comprenant les étapes suivantes:
a. l'extrusion d'un courant creux à l'état fondu, formé de segments s'étendant axialement des polymères placés alternativement côte à côte tout en adhérant de manière à constituer le courant creux à l'état fondu;
b. le refroidissement du courant de manière à former un filament; et
c. l'extraction du filament hors du courant à l'état fondu, à une vitesse de filature donnée; caractérisé en ce que la vitesse de filature donnée est suffisamment élevée et le refroidissement suffisamment rapide pour que des sous-filaments à un seul composant dissociés du filament possèdent un frisage hélicoïdal sans torsion sensiblement latent.
2. Filament conjugué de polymères de nylon 66 et de téréphtalate de polyéthylène, disposés axialement en étant adhérents, les sous-filaments du filament étant fixés de manière amovible les uns aux autres en étant côte à côte, et le filament étant sensiblement exempt de frisure, caractérisé en ce que les sous-filaments à un seul composant dissociés du filament conjugué possèdent une frisure hélicoïdale sans torsion sensiblement latente.
3. Filament selon la revendication 2, caractérisé en ce qu'il est creux.
4. Procédé comprenant la dissociation d'un filament conjugué défini dans l'une ou l'autre des revendications 2 et 3 pour donner des sous-filaments à seul composant.
EP79303081A 1979-01-02 1979-12-31 Procédé de filage par fusion d'un filament conjugué susceptible de se fendre; filament conjugué, à frisure latente, susceptible de se fendre; procédé de refente d'un tel filament Expired EP0013186B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US84879A 1979-01-02 1979-01-02
US848 1979-01-12

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP82105614A Division EP0065788A3 (fr) 1979-01-02 1979-12-31 Procédé de filage de filaments conjugués
EP82105614A Division-Into EP0065788A3 (fr) 1979-01-02 1979-12-31 Procédé de filage de filaments conjugués

Publications (2)

Publication Number Publication Date
EP0013186A1 EP0013186A1 (fr) 1980-07-09
EP0013186B1 true EP0013186B1 (fr) 1983-12-07

Family

ID=21693265

Family Applications (2)

Application Number Title Priority Date Filing Date
EP82105614A Ceased EP0065788A3 (fr) 1979-01-02 1979-12-31 Procédé de filage de filaments conjugués
EP79303081A Expired EP0013186B1 (fr) 1979-01-02 1979-12-31 Procédé de filage par fusion d'un filament conjugué susceptible de se fendre; filament conjugué, à frisure latente, susceptible de se fendre; procédé de refente d'un tel filament

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP82105614A Ceased EP0065788A3 (fr) 1979-01-02 1979-12-31 Procédé de filage de filaments conjugués

Country Status (5)

Country Link
EP (2) EP0065788A3 (fr)
JP (1) JPS55128016A (fr)
KR (1) KR840001633B1 (fr)
CA (1) CA1145907A (fr)
DE (1) DE2966478D1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4246219A (en) * 1979-03-27 1981-01-20 Monsanto Company Multisegmented filament spinning process
EP0074446B1 (fr) * 1981-09-15 1985-05-22 Monsanto Company Fil multifilament et procédé de filage
EP0074445A1 (fr) * 1981-09-15 1983-03-23 Monsanto Company Procédé de filage et fil multifilament
US5093061A (en) * 1982-03-08 1992-03-03 Monsanto Deep dyeing conjugate yarn processes
JPS6075665A (ja) * 1983-10-01 1985-04-30 東レ株式会社 多成分繊維のフイブリル化絡合方法
DE68927225T2 (de) * 1988-12-28 1997-02-20 Asahi Chemical Ind Acrylfaser und Verfahren zur Herstellung
CN109957856B (zh) * 2017-12-25 2022-07-19 上海凯赛生物技术股份有限公司 一种并列复合纤维及其制备方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3117906A (en) * 1961-06-20 1964-01-14 Du Pont Composite filament
JPS5228918B2 (fr) * 1972-05-23 1977-07-29
JPS581221B2 (ja) * 1974-12-12 1983-01-10 帝人株式会社 シカガワヨウヘンシヨクブツノ セイゾウホウホウ
US4246219A (en) * 1979-03-27 1981-01-20 Monsanto Company Multisegmented filament spinning process

Also Published As

Publication number Publication date
DE2966478D1 (en) 1984-01-12
EP0065788A3 (fr) 1984-11-28
KR830001428A (ko) 1983-04-30
EP0065788A2 (fr) 1982-12-01
JPS55128016A (en) 1980-10-03
EP0013186A1 (fr) 1980-07-09
CA1145907A (fr) 1983-05-10
KR840001633B1 (ko) 1984-10-12

Similar Documents

Publication Publication Date Title
US4460649A (en) Composite fiber
US4492731A (en) Trilobal filaments exhibiting high bulk and sparkle
EP0057583B2 (fr) Fil synthétique et structures analogues, et méthode pour leur production
US3249669A (en) Process for making composite polyester filaments
GB1215402A (en) Improved conjugate filaments and method for producing same
US4489543A (en) Self-crimping yarn
US4115989A (en) Product and process
EP0455927B1 (fr) Procédé pour la fabrication d'une microfibre conjuguée partiellement dissoluble et divisible
US4217321A (en) Method for making bicomponent polyester yarns at high spinning rates
EP0013186B1 (fr) Procédé de filage par fusion d'un filament conjugué susceptible de se fendre; filament conjugué, à frisure latente, susceptible de se fendre; procédé de refente d'un tel filament
US4351147A (en) Spun-like yarn
US2517946A (en) Method of producing yarn
CA1123280A (fr) Filament continu a toucher de laine
US4661404A (en) Self-crimping polyester yarn
US4246219A (en) Multisegmented filament spinning process
US3423923A (en) Crimped multifilament yarn
US3489641A (en) Heterofilaments from polyamides and polyesters
EP0758027A1 (fr) Fil continu en polyester, son procede de production, articles tisses et tricotes a partir dudit fil continu, et procede de production desdits articles
DE2532843A1 (de) Verfahren zum herstellen von filamentgarnen mit statistisch verteilten gerissenen einzelfilamenten
US4419313A (en) Self crimping yarn and process
US3616633A (en) Tetralobal synthetic filament process for producing the same and article made therefrom
EP0172181B1 (fr) Procede et installation de filage a deux composants de fils synthetiques.
CA1108833A (fr) Fil type filature a filaments de divers deniers
EP0013498B1 (fr) Procédé de fabrication de fils autofrisants, fils multifilaments contenant des filaments à frisure latente et fils multifilaments contenant des fils à frisure développée
EP0041820B1 (fr) Procédé pour la production d'un fil de polyester autofrisant

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE DE FR GB IT NL

17P Request for examination filed
ITF It: translation for a ep patent filed

Owner name: MODIANO & ASSOCIATI S.R.L.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): BE DE FR GB IT NL

REF Corresponds to:

Ref document number: 2966478

Country of ref document: DE

Date of ref document: 19840112

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19841102

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19841122

Year of fee payment: 6

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19841231

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19851231

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19861231

BERE Be: lapsed

Owner name: MONSANTO CY

Effective date: 19861231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19870701

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19870831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19870901

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19881118