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GB1124380A - Artificial filaments having a male screw shape and method of manufacture thereof - Google Patents

Artificial filaments having a male screw shape and method of manufacture thereof

Info

Publication number
GB1124380A
GB1124380A GB35659/66A GB3565966A GB1124380A GB 1124380 A GB1124380 A GB 1124380A GB 35659/66 A GB35659/66 A GB 35659/66A GB 3565966 A GB3565966 A GB 3565966A GB 1124380 A GB1124380 A GB 1124380A
Authority
GB
United Kingdom
Prior art keywords
melt
polymer
filaments
extrusion
shear stress
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
GB35659/66A
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 GB1124380A publication Critical patent/GB1124380A/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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2973—Particular cross section
    • Y10T428/2976—Longitudinally varying
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/298—Physical dimension

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Artificial Filaments (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

1,124,380. Melt spinning filaments of male screw shape. TOYO RAYON K.K. 9 Aug., 1966 [9 Aug., 1965; 15 Nov., 1965; 22 July, 1966], No. 35659/66. Heading B5B. Synthetic filaments comprise a melt-spinnable synthetic polymer having a male screw shape wherein the ratio (p/d) of the pitch (p) to the outer diameter (d) of the screw thread is in the range of from 0À3 to 15, and the ratio (h/d) of the depth of the thread (h) to outer diameter (d) of the screw thread is in the range of from 0À03 to 0À4. The polymer may be a polyamide such as polyhexamethylene adipamide having a relative viscosity, measured in 98% sulphuric acid at 25‹ C., of 2À2 to 6À0 or a polycaprolactam of relative viscosity, measured as above, of 2 to 9. The filaments may be drawn and thereby molecularly oriented. The p/d value and the h/d value of the filaments is preferably in the range 0À5 to 10 and 0À05 to 0À35 respectively. The filaments may be made by melt-spinning the polymer through the or each extrusion orifice of circular cross-section in a spinneret under an extrusion condition such that the shear stress to which the polymer is subjected during its passage through the or each extrusion orifice of the spinneret is such that with the relative viscosity of the polymer lying within certain limits the extrudate undergoes melt fracture and thereafter contacting the extruded filamentary melt with a liquid which is inert to the polymer and at a temperature sufficiently low to solidify the filamentary melt and fix it in a screw form. The filaments may be made by melt-spinning nylon 66 of relative viscosity 2À2 to 6À0 under extrusion conditions such that the shear stress in the or each extrusion orifice of the spinneret is expressed by the formula:- wherein # r represents the relative viscosity of the polymer and # represents the shear stress expressed in dynes/cm.<SP>2</SP>. The filaments may be made by melt-spinning nylon 6 (polycaprolactam) under extrusion conditions such that the shear stress is The term "melt fracture" is defined as a phenomenon in which the outer shape of an extrudate becomes irregular when a difficultly fusible polymer or a polymer having a very high melt viscosity is melt-extruded through a capillary tube. The shear stress (# w ) is expressed by the formula:- where P represents the extrusion pressure, R is the diameter of the extrusion orifice, L is the length of the orifice, and n is a tube-length compensating coefficient.
GB35659/66A 1965-08-09 1966-08-09 Artificial filaments having a male screw shape and method of manufacture thereof Expired GB1124380A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP4804065 1965-08-09
JP6978365 1965-11-15
JP4767066 1966-07-22

Publications (1)

Publication Number Publication Date
GB1124380A true GB1124380A (en) 1968-08-21

Family

ID=27293040

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35659/66A Expired GB1124380A (en) 1965-08-09 1966-08-09 Artificial filaments having a male screw shape and method of manufacture thereof

Country Status (8)

Country Link
US (1) US3567569A (en)
BE (1) BE685219A (en)
DE (1) DE1660646A1 (en)
DK (1) DK119269B (en)
ES (1) ES330003A1 (en)
GB (1) GB1124380A (en)
NL (1) NL6611192A (en)
SE (1) SE333038B (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4186239A (en) * 1976-12-06 1980-01-29 Berkley & Company, Inc. Monofilament weed cutters
US4574108A (en) * 1983-11-18 1986-03-04 University Of Delaware Fiber reinforced composite
DE3424148A1 (en) * 1984-06-30 1986-01-09 GTS Gesellschaft für Turbo- und Schraubenverdichtertechnik Kirsten KG, 5090 Leverkusen Method of manufacturing rotors for screw-type compressors
US4869055A (en) * 1987-01-23 1989-09-26 Omark Industries, Inc. Star-shaped flexible cutting line
US5032456A (en) * 1987-09-11 1991-07-16 Newell Operating Company Microcellular synthetic paintbrush bristles
DE4022890A1 (en) * 1990-07-18 1992-01-23 Geka Brush Georg Karl Gmbh BRUSH, ESPECIALLY MASCARA BRUSH
US5195546A (en) * 1990-12-11 1993-03-23 Ketema Cosmetic brush and bristles
BE1005815A3 (en) * 1992-05-08 1994-02-08 Bekaert Sa Nv SFRC HIGH flexural strength.
US5430943A (en) * 1992-12-10 1995-07-11 Lee; Anthony L. Unitary cutting attachment for vegetation cutting devices
DE19533816A1 (en) 1995-09-13 1997-03-20 Coronet Werke Gmbh Process for the production of spiral bristles
DE19533815A1 (en) * 1995-09-13 1997-03-20 Coronet Werke Gmbh Toothbrush and process for its manufacture
SE506192C2 (en) * 1996-04-03 1997-11-17 Electrolux Ab Trimmer wire for grass clearing machines
US6058541A (en) * 1996-07-03 2000-05-09 Gillette Canada Inc. Crimped bristle toothbrush
DE19640852A1 (en) * 1996-10-02 1998-04-16 Braun Ag Bristle for a toothbrush
DE19640853A1 (en) * 1996-10-02 1998-04-16 Braun Ag Bristle for a toothbrush
US6018840A (en) * 1998-03-09 2000-02-01 Gillette Canada Inc. Notched dental hygiene article
US6440557B1 (en) * 1999-07-08 2002-08-27 E. I. Du Pont De Nemours & Co. Brush filaments
CA2289272A1 (en) * 1999-10-07 2001-04-07 Raul Ioan Risco Brushing device
TW576883B (en) 2000-04-03 2004-02-21 Astenjohnson Inc Industrial textiles assembled from pre-crimped components
BR0110054A (en) 2000-04-03 2003-01-28 Astenjohnson Inc Previously corrugated loop components
DE102007018766A1 (en) * 2007-04-20 2008-10-23 Braun Gmbh toothbrush
DE102007047880A1 (en) 2007-11-28 2009-06-10 Voith Patent Gmbh Belt, particularly endless belt for web-processing machine, is designed in units made of synthetic filament yarns, which represent monofilament yarns
EP2225966A1 (en) * 2009-03-04 2010-09-08 Braun GmbH Toothbrush bristle and method for manufacturing such a bristle

Also Published As

Publication number Publication date
DE1660646A1 (en) 1971-10-21
US3567569A (en) 1971-03-02
BE685219A (en) 1967-01-16
SE333038B (en) 1971-03-01
NL6611192A (en) 1967-02-10
ES330003A1 (en) 1967-09-16
DK119269B (en) 1970-12-07

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