ES330034A1 - Thick and thin yarn and process for the preparation thereof - Google Patents

Thick and thin yarn and process for the preparation thereof

Info

Publication number
ES330034A1
ES330034A1 ES330034A ES330034A ES330034A1 ES 330034 A1 ES330034 A1 ES 330034A1 ES 330034 A ES330034 A ES 330034A ES 330034 A ES330034 A ES 330034A ES 330034 A1 ES330034 A1 ES 330034A1
Authority
ES
Spain
Prior art keywords
polymer
filaments
shear stress
melt
slubs
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
ES330034A
Other languages
Spanish (es)
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
Toyo Rayon Co 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
Application filed by Toyo Rayon Co Ltd filed Critical Toyo Rayon Co Ltd
Publication of ES330034A1 publication Critical patent/ES330034A1/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
    • D01D5/20—Formation of filaments, threads, or the like with varying denier along their length
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • D02J1/228—Stretching in two or more steps, with or without intermediate steps
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/08—Fibrillating cellular materials

Abstract

Slubbed drawn filaments of a melt-spinnable organic synthetic polymer are characterized in that the ratio of the cross-sectional area of the parts (P) of the filaments between the slubs to that of the slubs (Q) is within the range 1: 2 to 1: 15, preferably within the range 1 :4 to 1:10, and the frequency of the slubs is at least one and preferably 2 per 30 mm. length of the filament, said cross-sectional configuration occurring continuously along the length of the filament. The polymer may be a synthetic homopolyamide, a copolyamide, consisting chiefly of polyamide units or a blend of a polyamide with another polymer, the polyamide component predominating. The polymer may be a polyhexamethylene adipamide or a polycaprolactam, the relative viscosities of the polymers at 25 C., measured in 98% by weight sulphuric acid being 2À2 to 6À0 and 2 to 9 respectively. The slubbed filaments may be made by meltspinning the polymer under such conditions that the shear stress to which the melt is subjected during its passage through the or each spinneret orifice is such as to cause the formation of melt fracture, the cooling and solidification of the molten extruded filaments being effected by means of a gaseous cooling medium under non-quenching conditions, and subsequently drawing the filaments. The polymer used may be polyhexamethylene adipamide (nylon-6, 6) having a relative viscosity, # r (measured at 25 C. in sulphuric acid of 98% by weight concentration) of from 2À2 to 6À0 and the melt spinning conditions may be such as to exert a shear stress within the range defined by the formula 107.5/#r1.8##w#106.7#r0.87 in which # w ) represents the shear stress (dynes/cm.2). Alternatively the polymer used may be polycaprolactam having a relative viscosity of 2-9, and the melt spinning conditions may be such as to exert a shear stress within the range defined by the formula 107.7/#r1.8## w #2 x 107.
ES330034A 1965-08-09 1966-08-08 Thick and thin yarn and process for the preparation thereof Expired ES330034A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP4803765 1965-08-09
JP6978365 1965-11-15
JP4767066 1966-07-22

Publications (1)

Publication Number Publication Date
ES330034A1 true ES330034A1 (en) 1968-03-16

Family

ID=27293039

Family Applications (1)

Application Number Title Priority Date Filing Date
ES330034A Expired ES330034A1 (en) 1965-08-09 1966-08-08 Thick and thin yarn and process for the preparation thereof

Country Status (7)

Country Link
US (1) US3439084A (en)
BE (1) BE685220A (en)
DE (1) DE1660647A1 (en)
ES (1) ES330034A1 (en)
GB (1) GB1141394A (en)
NL (1) NL6611191A (en)
SE (1) SE333212B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3836416A (en) * 1970-01-29 1974-09-17 Alta Ind Non woven thermoplastic fabric
FR2116668A5 (en) * 1970-12-01 1972-07-21 Rhodiaceta
DE2250584A1 (en) * 1971-10-11 1973-04-19 Asahi Chemical Ind MULTIFIL YARN
JPS5247053B2 (en) * 1972-10-16 1977-11-30
US4355075A (en) * 1979-03-27 1982-10-19 Teijin Limited Novel filament-like fibers and bundles thereof, and novel process and apparatus for production thereof
EP0030566B1 (en) * 1979-12-06 1986-07-30 Toray Industries, Inc. Pile fabric
US4414276A (en) * 1980-07-29 1983-11-08 Teijin Limited Novel assembly of composite fibers
DE3163504D1 (en) * 1980-08-18 1984-06-14 Teijin Ltd Process and molding apparatus for producing a fibrous assembly by melt extrusion
DE4029254A1 (en) * 1990-09-14 1992-03-19 Benecke Ag J H METHOD FOR PRODUCING MULTICOLORED SLUSH SKINS AND FORM AND SEPARATING DEVICE FOR CARRYING OUT THE METHOD
WO2007138887A1 (en) * 2006-05-31 2007-12-06 Kao Corporation Stretch nonwoven fabric

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3236914A (en) * 1959-05-12 1966-02-22 Canadian Ind Method for rendering polymers compatible
US2991508A (en) * 1959-09-23 1961-07-11 Du Pont Fabrication of thermoplastic resins
US3127915A (en) * 1960-07-01 1964-04-07 Phillips Petroleum Co Synthetic knopped filaments
BE601890A (en) * 1960-07-01
GB928825A (en) * 1961-02-28 1963-06-19 Courtaulds Ltd Improvements in or relating to synthetic filaments
US3303169A (en) * 1962-01-18 1967-02-07 Du Pont High-modulus, high-tenacity, lowshrinkage polyamide yarn
GB1003996A (en) * 1963-09-20 1965-09-08 Ici Ltd Monofilaments
NL6500459A (en) * 1965-01-15 1965-03-25

Also Published As

Publication number Publication date
GB1141394A (en) 1969-01-29
US3439084A (en) 1969-04-15
SE333212B (en) 1971-03-08
DE1660647A1 (en) 1971-04-22
BE685220A (en) 1967-01-16
NL6611191A (en) 1967-02-10

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