GB1218066A - Crimped synthetic filament having a branched cross-section and a method for manufacturing the same - Google Patents

Crimped synthetic filament having a branched cross-section and a method for manufacturing the same

Info

Publication number
GB1218066A
GB1218066A GB3081868A GB3081868A GB1218066A GB 1218066 A GB1218066 A GB 1218066A GB 3081868 A GB3081868 A GB 3081868A GB 3081868 A GB3081868 A GB 3081868A GB 1218066 A GB1218066 A GB 1218066A
Authority
GB
United Kingdom
Prior art keywords
filament
cross
section
filaments
spinneret
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
GB3081868A
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.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
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 JP4175467 priority Critical
Priority to JP4174767 priority
Priority to JP4174867 priority
Application filed by Toray Industries Inc filed Critical Toray Industries Inc
Publication of GB1218066A publication Critical patent/GB1218066A/en
Application status is Expired legal-status Critical

Links

Classifications

    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00Formation of filaments, threads, or the like
    • D01D5/22Formation of filaments, threads, or the like with a crimped or curled structure; with a special structure to simulate wool
    • D01D5/23Formation of filaments, threads, or the like with a crimped or curled structure; with a special structure to simulate wool by asymmetrical cooling of filaments, threads, or the like, leaving the spinnerettes
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00Formation of filaments, threads, or the like
    • D01D5/22Formation of filaments, threads, or the like with a crimped or curled structure; with a special structure to simulate wool
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00Formation of filaments, threads, or the like
    • D01D5/253Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/29Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913Rod, strand, filament or fiber
    • Y10T428/2922Nonlinear [e.g., crimped, coiled, etc.]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/29Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913Rod, strand, filament or fiber
    • Y10T428/2933Coated or with bond, impregnation or core
    • Y10T428/2964Artificial fiber or filament
    • Y10T428/2967Synthetic resin or polymer
    • Y10T428/2969Polyamide, polyimide or polyester
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/29Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913Rod, strand, filament or fiber
    • Y10T428/2973Particular cross section

Abstract

1,218,066. Crimped synthetic filaments of branched cross-section. TORAY INDUSTRIES Inc. 27 June, 1968 [30 June, 1967 (3)], No. 30818/68. Heading B5B. A crimped synthetic filament is characterized by a cross-section having at least three extended branches and defined by the following equations: (a) - 0À125 log 10 D + 1À000 # Log 10 N # -0À589 log 10 D + 2À301; (b) 0À606 # log 10 R # 0À111 log 10 D + 0À845; (c) 1 # D # 25. In the above, D equals the fineness of the filament in denier, N equals the number of crimps per 1 inch length of said filament, and R is the measurement of the cross-section of said filament by the method described in the Specification. Cross-sections of such filaments are shown in Figs. 1A to 1G. The crimped synthetic filament may be further characterized by said cross-section being defined by the following equation: (d) 3À0 # x/y # 11À0; (e) 0À15 # X/Y # 0À60. In these equations, x equals the sum of the lengths of the branches of the crosssection of the filament, y equals the average width of the branches of the cross-section of said filament, X equals the cross-sectional area of said filament, and Y is equal to the area of the smallest circumscribed circle of the crosssection of the filament. The filament may be further characterized by the minimum value of the moment of inertia of the area of the crosssection of the filament being more than 1À5 times as large as that of an imaginary circle having the same area and the product of tenacity and breaking elongation of the filament being smaller than 100. The filament may be further characterized by being crimped due to the variation in the thermal shrinkability across its transverse cross-section. Preferably the filament is made of poly #-caproamide, but may be made of other polyamides e.g. polyhexamethylene adipamide, polyesters as for example polyethylene terephthalate, and polyolefins as for example polypropylene or polyethylene. The filaments may be made by melt extrusion of a thermoplastic synthetic polymer through a spinneret having a plurality of orifices each having a cross-section with at least three extending branches whose length is considerably larger than the width thereof, ejecting cooling air strongly on to one side only of an advancing stream of said extruded filaments at a position from 5 to 15 cms. below an outlet of said spinneret and taking up said solidified filaments at a take-up speed higher than 3000 m. per minute. The length of the branches of the spinneret may range between 0À5 and 2À5 mm. and the width of said branches may be smaller than a quarter of said length but larger than 0À07 mm. Fig. 8 illustrates a suitable spinneret orifice. Using the apparatus of Fig. 7, filaments 14 are extruded through the orifices of the spinneret 12 of the melt-spinning apparatus and subjected to cooling air while passing through cooling chamber 13, oil is fed by an oiling roller 15 positioned downstream on the cooling chamber 13 in the same manner as in conventional melt-spinning and the filaments are taken up on to a package 18 at a take-up speed higher than 3000 m. per minute by a drive roller 16 and a take-up roller 17. Cooling air is conducted into cooling chamber 13 through an air conduit 19 and ejected on to one side only of the filaments 14 as shown by the arrows. Ejection of the cooling air must be performed at from 5 to 15 cms. below the outlet of spinneret 12. The ejecting speed of the cooling air should range, in accordance with a number of crimps required for the filament manufactured, from 10 to 100 m. per minute, especially from 15 to 50 m. per minute, and the temperature of the cooling air should range from 15‹ to 22‹ C. In practice, the upper limit of the take-up speed of the filament is 6000 m. per min. By subjecting the multifilament yarn thus manufactured to steam treatment in relaxed condition, numerous curl-shaped crimps can be developed on the multifilament yarn. Examples are given.
GB3081868A 1967-06-30 1968-06-27 Crimped synthetic filament having a branched cross-section and a method for manufacturing the same Expired GB1218066A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP4175467 1967-06-30
JP4174767 1967-06-30
JP4174867 1967-06-30

Publications (1)

Publication Number Publication Date
GB1218066A true GB1218066A (en) 1971-01-06

Family

ID=27290936

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3081868A Expired GB1218066A (en) 1967-06-30 1968-06-27 Crimped synthetic filament having a branched cross-section and a method for manufacturing the same

Country Status (5)

Country Link
US (1) US3623939A (en)
DE (1) DE1760771A1 (en)
FR (1) FR1570373A (en)
GB (1) GB1218066A (en)
NL (1) NL6809263A (en)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3981948A (en) * 1975-01-02 1976-09-21 Eastman Kodak Company Arrangements in spinnerets of spinning orifices having significant kneeing potential
US4176150A (en) * 1977-03-18 1979-11-27 Monsanto Company Process for textured yarn
US4254181A (en) * 1977-03-18 1981-03-03 Monsanto Company Filaments having alternate S-twisted and Z-twisted helical sections produced by crimping filaments provided with an eccentric anisotropy of shrinkable property by a preferential cooling on one side upon extrusion thereof through a spinneret
DE2842949A1 (en) * 1977-10-03 1979-04-12 Monsanto Co A process for melt spinning a yarn selbstkraeuselnden
US4238439A (en) * 1977-10-06 1980-12-09 Monsanto Company Process for producing self-crimping polyamide yarns
US4287713A (en) * 1978-01-03 1981-09-08 Monsanto Company Process for low-torque textured yarn
IT1112985B (en) * 1978-03-31 1986-01-20 Monsanto Co A method of spinning filaments at dyeability 'improved
US4351147A (en) * 1978-07-17 1982-09-28 Fiber Industries, Inc. Spun-like yarn
US4301102A (en) * 1979-07-16 1981-11-17 E. I. Du Pont De Nemours And Company Self-crimping polyamide fibers
US4343860A (en) * 1979-07-16 1982-08-10 E. I. Du Pont De Nemours And Company Self-crimping polyamide fibers
US5093061A (en) * 1982-03-08 1992-03-03 Monsanto Deep dyeing conjugate yarn processes
US4620859A (en) * 1984-12-03 1986-11-04 Owens-Corning Fiberglas Corporation Method for making coalesced mineral fibers
US4622054A (en) * 1984-12-03 1986-11-11 Owens-Corning Fiberglas Corporation Method and apparatus for making non-circular mineral fibers
US4636234A (en) * 1984-12-03 1987-01-13 Owens-Corning Fiberglas Corporation Method and apparatus for making non-circular mineral fibers
US4666485A (en) * 1984-12-03 1987-05-19 Owens-Corning Fiberglas Corporation Method and apparatus for making tapered mineral and organic fibers
US4661406A (en) * 1985-07-02 1987-04-28 Neptco Incorporated Strength element for fiber optic cables
US5069970A (en) * 1989-01-23 1991-12-03 Allied-Signal Inc. Fibers and filters containing said fibers
US5972505A (en) * 1989-04-04 1999-10-26 Eastman Chemical Company Fibers capable of spontaneously transporting fluids
US5057368A (en) * 1989-12-21 1991-10-15 Allied-Signal Filaments having trilobal or quadrilobal cross-sections
US5277976A (en) * 1991-10-07 1994-01-11 Minnesota Mining And Manufacturing Company Oriented profile fibers
FR2691985B1 (en) * 1992-06-05 1996-03-29 Rhone Poulenc Fibres Son multilobar and process for obtaining them.
US6100207A (en) * 1995-02-02 2000-08-08 Eastman Chemical Company Absorbent head band
US20030118816A1 (en) * 2001-12-21 2003-06-26 Polanco Braulio A. High loft low density nonwoven webs of crimped filaments and methods of making same
US20060116041A1 (en) * 2004-11-30 2006-06-01 Sun Isle Casual Furniture, Llc Yarn having lateral projections
US8629316B2 (en) * 2009-08-04 2014-01-14 Harbor Linen Llc Absorbent article containing structured fibers
US8642833B2 (en) 2009-08-04 2014-02-04 Harbor Linen Llc Absorbent article containing structured fibers
CN102021669B (en) * 2010-09-02 2013-06-12 荣盛石化股份有限公司 Random differentiated filament yarn due to thermal bonding

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3017686A (en) * 1957-08-01 1962-01-23 Du Pont Two component convoluted filaments
US3156085A (en) * 1959-09-24 1964-11-10 Du Pont Continuous composite polyester filament yarn
BE638856A (en) * 1962-10-19
US3188264A (en) * 1962-12-21 1965-06-08 Tektronix Inc Loose fill packing material
US3425893A (en) * 1965-08-03 1969-02-04 James G Sims Textile filaments

Also Published As

Publication number Publication date
DE1760771A1 (en) 1971-02-25
FR1570373A (en) 1969-06-06
US3623939A (en) 1971-11-30
NL6809263A (en) 1968-12-31

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