EP0074445A1 - Procédé de filage et fil multifilament - Google Patents

Procédé de filage et fil multifilament Download PDF

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Publication number
EP0074445A1
EP0074445A1 EP81304213A EP81304213A EP0074445A1 EP 0074445 A1 EP0074445 A1 EP 0074445A1 EP 81304213 A EP81304213 A EP 81304213A EP 81304213 A EP81304213 A EP 81304213A EP 0074445 A1 EP0074445 A1 EP 0074445A1
Authority
EP
European Patent Office
Prior art keywords
filaments
sub
deniers
streams
split
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Withdrawn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
EP81304213A
Other languages
German (de)
English (en)
Inventor
Jing-Peir Yu
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
Priority to EP81304213A priority Critical patent/EP0074445A1/fr
Publication of EP0074445A1 publication Critical patent/EP0074445A1/fr
Withdrawn legal-status Critical Current

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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
    • 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 spinning conjugate filaments yielding fabrics with improved hand.
  • a spinning process comprising generating a plurality of molten streams from a spinneret, each of the streams being formed from axially extending continuous segments of dissimilar polymers arranged alternately in side-by-side temporarily adhering relationship; quenching the streams to form filaments; and withdrawing the filaments from the streams, the streams being selected such that some sub-filaments split from a first of the filaments have substantially different deniers than other sub-filaments split from a second of the filaments.
  • At least one of the filaments is splittable into a different number of sub-filaments than is another of the filaments.
  • a multi-filament yarn comprising a plurality of filaments splittable into sub-filaments of at least first and second polymers, some sub-filaments split from a first of the filaments having substantially different deniers than other sub-filaments split from a second of the filaments.
  • the first and the second of the filaments are splittable into different numbers of sub-filaments.
  • some sub-filaments have deniers at least 50% larger than the other sub-filaments.
  • some sub-filaments have deniers at least 100% larger than the other sub-filaments.
  • the preferred spinneret construction illustrated includes several groups of generally arched or horseshoe-shaped slots 20 in spinneret blank 22, those slots 20 in each group being arranged symmetrically about a central point for that group with the open end of the horseshoe shapes facing inwardly.
  • the several slots 20 in each group constitute a combined orifice for spinning a single filament. Slots 20 extend entirely through blank 22 except for recessed web 24 at the apex of each slot 20, the webs 24 and the lands between adjacent ends of slots 20 providing support to retain the material in the center of the combined orifice.
  • the two dissimilar polymers are fed to the combined orifices as sheath-core supply streams, with dotted circles 26 representing the interfaces between the two polymers. Adjacent ends of adjacent slots 20 are sufficiently close that the streams issuing therefrom unite just below the spinneret.
  • the molten spun streams are thus hollow structures composed of alternating axially extending segments of the two polymers. Surface tension and other effects tend to make the molten streams approach hollow circular cross-sections prior to solidification, as shown in FIGURE 2, which illustrates a filament formed by a combined orifice composed of eight slots 20. If the polymers differ in melt viscosity, it is ordinarily preferable to provide the polymer having the lower viscosity as the core of the stream approaching each combined orifice.
  • the various slot dimensions in the directions parallel to and transverse to the direction of polymer flow are selected to control the relative deniers of the combined filaments spun from the various combined orifices.
  • the various slots may be identical in their transverse dimensions, with their lengths parallel to the direction of polymer flow selected to control the relative combined filament deniers. Since the relative combined filament deniers are thus controllable, and since the number of segments or sub-filaments for each combined filament is selected by spinneret design, a very wide range of deniers in the resulting sub-filaments split from the combined filaments is possible.
  • dissimilar polymers are poly(ethylene terephthalate) and nylon 66.
  • dissimilar is meant that the polymeric components in the solidified filaments can be readily separated from one another into sub-filaments.
  • the hand of fabrics made from yarns according to the invention can be varied widely by selection of substantially different deniers for the sub-filaments. Marked improvement in hand occurs when some sub-filaments have deniers at least 50% larger than others of the sub-filaments, with better results when the difference is at least 100%.
  • Yarns according to the invention can be produced by spinning followed by drawing, either in a coupled process or as separate operations, or can be produced by spinning at speeds sufficiently high as to eliminate the need for a drawing operation.
EP81304213A 1981-09-15 1981-09-15 Procédé de filage et fil multifilament Withdrawn EP0074445A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP81304213A EP0074445A1 (fr) 1981-09-15 1981-09-15 Procédé de filage et fil multifilament

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81304213A EP0074445A1 (fr) 1981-09-15 1981-09-15 Procédé de filage et fil multifilament

Publications (1)

Publication Number Publication Date
EP0074445A1 true EP0074445A1 (fr) 1983-03-23

Family

ID=8188395

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81304213A Withdrawn EP0074445A1 (fr) 1981-09-15 1981-09-15 Procédé de filage et fil multifilament

Country Status (1)

Country Link
EP (1) EP0074445A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1149195A1 (fr) * 1998-10-06 2001-10-31 Hills, Inc. Fibres elastomeres composites separables

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4051287A (en) * 1974-12-12 1977-09-27 Teijin Limited Raised woven or knitted fabric and process for producing the same
EP0013186A1 (fr) * 1979-01-02 1980-07-09 Monsanto Company 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
GB2045153A (en) * 1979-03-27 1980-10-29 Monsanto Co Multisegmented filament spinning process

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4051287A (en) * 1974-12-12 1977-09-27 Teijin Limited Raised woven or knitted fabric and process for producing the same
EP0013186A1 (fr) * 1979-01-02 1980-07-09 Monsanto Company 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
GB2045153A (en) * 1979-03-27 1980-10-29 Monsanto Co Multisegmented filament spinning process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1149195A1 (fr) * 1998-10-06 2001-10-31 Hills, Inc. Fibres elastomeres composites separables
EP1149195A4 (fr) * 1998-10-06 2005-02-09 Hills Inc Fibres elastomeres composites separables

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

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Effective date: 19840425

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Inventor name: YU, JING-PEIR