GB710087A - Melt-spinning filaments - Google Patents

Melt-spinning filaments

Info

Publication number
GB710087A
GB710087A GB2570650A GB2570650A GB710087A GB 710087 A GB710087 A GB 710087A GB 2570650 A GB2570650 A GB 2570650A GB 2570650 A GB2570650 A GB 2570650A GB 710087 A GB710087 A GB 710087A
Authority
GB
United Kingdom
Prior art keywords
straight line
filaments
projection
spinning
polymer
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
GB2570650A
Inventor
Leonard Wood
Arthur Anthony Hill
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.)
British Nylon Spinners Ltd
Imperial Chemical Industries Ltd
Original Assignee
British Nylon Spinners Ltd
Imperial Chemical Industries Ltd
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
Priority to NL7013063.A priority Critical patent/NL164602B/en
Priority to BE506412D priority patent/BE506412A/xx
Application filed by British Nylon Spinners Ltd, Imperial Chemical Industries Ltd filed Critical British Nylon Spinners Ltd
Priority to GB2570650A priority patent/GB710087A/en
Priority to FR1043961D priority patent/FR1043961A/en
Priority to CH299994D priority patent/CH299994A/en
Publication of GB710087A publication Critical patent/GB710087A/en
Expired legal-status Critical Current

Links

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
    • D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; 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
    • D01D5/08—Melt spinning methods
    • 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
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials For Medical Uses (AREA)

Abstract

Filaments of non-circular cross-section, and yarn consisting of or containing such filaments, which filaments have a shape factor (see below) of at least 1.4, are produced by melt-spinning a synthetic linear polymer having a relative viscosity (see below) of at least 33, under an inert atmosphere, through a spinneret having slot-shaped orifices into a cooling fluid, the filaments or yarn being subsequently cold drawn. The "shape factor" is the projection of the cross-section of the filament on a straight line oriented so that the projection is a maximum divided by the projection of the cross-section on a straight line at right angles to the former straight line. The polymers may be polyanhydrides, polyureas, polyurethanes, polyethers or, preferably, polyamides, e.g. polyhexamethylene adipamide. The "relative viscosity" of a polymer is the ratio of the viscosity of a solution thereof in 90 per cent. by weight formic acid containing 11 grams of polymer per 100 c.c. of solution at 25 DEG C. to the viscosity of 90 per cent. by weight formic acid at the same temperature. The inert atmosphere under which the polymer is molten may be nitrogen, but is preferably steam. The cooling fluid is preferably air. The slotshaped orifice is defined as any aperture at least four times as long as it is wide. The aperture may be branched, e.g. cruciform. It may be rectangular, lentiform, luniform, reniform or, particularly, bone-shaped, i.e. waisted. The length of the orifice is measured by the straight line joining its most distant points, and the width by the projection of the orifice in a straight line at right angles to the aforesaid straight line. Examples are given of the spinning of polyhexamethylene adipamide under nitrogen from a spinneret containing 15 rectangular slots measuring 0.019 by 0.004 in., the spinning speeds ranging from 805-3,695 f.p.m., the relative viscosities from 33.5 to 47.4, the draw ratios from 3.4 to 4.4 and the shape factors from 1.4 to 2.0. In a specific example the spinning speed is 2,230 f.p.m., the relative viscosity is 44.6, the draw ratio is 4.1 and the shape factor is 2.0. Specification 533,304 is referred to.
GB2570650A 1950-10-21 1950-10-21 Melt-spinning filaments Expired GB710087A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL7013063.A NL164602B (en) 1950-10-21 MOLDED DETERGENT.
BE506412D BE506412A (en) 1950-10-21
GB2570650A GB710087A (en) 1950-10-21 1950-10-21 Melt-spinning filaments
FR1043961D FR1043961A (en) 1950-10-21 1951-10-18 Filaments spinning in the molten state
CH299994D CH299994A (en) 1950-10-21 1951-10-20 Process for the production of synthetic fibers.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2570650A GB710087A (en) 1950-10-21 1950-10-21 Melt-spinning filaments

Publications (1)

Publication Number Publication Date
GB710087A true GB710087A (en) 1954-06-09

Family

ID=10231973

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2570650A Expired GB710087A (en) 1950-10-21 1950-10-21 Melt-spinning filaments

Country Status (5)

Country Link
BE (1) BE506412A (en)
CH (1) CH299994A (en)
FR (1) FR1043961A (en)
GB (1) GB710087A (en)
NL (1) NL164602B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3249669A (en) * 1964-03-16 1966-05-03 Du Pont Process for making composite polyester filaments
US4656231A (en) * 1979-08-14 1987-04-07 Phillips Petroleum Company Arylene sulfide polymerization; arylene sulfide polymer treated with aromatic compound having more than 2 halogen substituents; processed product thereof
US4702875A (en) * 1985-06-14 1987-10-27 E. I. Du Pont De Nemours And Company Process for producing high tenacity polyhexamethylene adipamide yarn having ribbon cross-section
US4801503A (en) * 1985-06-14 1989-01-31 E. I. Du Pont De Nemours And Company High tenacity polyhexamethylene adipamide yarn having ribbon cross-section filaments
US5242644A (en) * 1990-02-20 1993-09-07 The Procter & Gamble Company Process for making capillary channel structures and extrusion die for use therein
EP0573376A1 (en) * 1992-06-05 1993-12-08 Rhone-Poulenc Fibres Multilobal yarns und process for obtaining them

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3249669A (en) * 1964-03-16 1966-05-03 Du Pont Process for making composite polyester filaments
US4656231A (en) * 1979-08-14 1987-04-07 Phillips Petroleum Company Arylene sulfide polymerization; arylene sulfide polymer treated with aromatic compound having more than 2 halogen substituents; processed product thereof
US4702875A (en) * 1985-06-14 1987-10-27 E. I. Du Pont De Nemours And Company Process for producing high tenacity polyhexamethylene adipamide yarn having ribbon cross-section
US4801503A (en) * 1985-06-14 1989-01-31 E. I. Du Pont De Nemours And Company High tenacity polyhexamethylene adipamide yarn having ribbon cross-section filaments
US5242644A (en) * 1990-02-20 1993-09-07 The Procter & Gamble Company Process for making capillary channel structures and extrusion die for use therein
EP0573376A1 (en) * 1992-06-05 1993-12-08 Rhone-Poulenc Fibres Multilobal yarns und process for obtaining them
FR2691985A1 (en) * 1992-06-05 1993-12-10 Rhone Poulenc Fibres Multilobe yarns and their production process.

Also Published As

Publication number Publication date
BE506412A (en)
NL164602B (en)
CH299994A (en) 1954-07-15
FR1043961A (en) 1953-11-13

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