GB1019099A - Improvements in or relating to the melt-spinning of polyamides - Google Patents

Improvements in or relating to the melt-spinning of polyamides

Info

Publication number
GB1019099A
GB1019099A GB100126/64A GB1012664A GB1019099A GB 1019099 A GB1019099 A GB 1019099A GB 100126/64 A GB100126/64 A GB 100126/64A GB 1012664 A GB1012664 A GB 1012664A GB 1019099 A GB1019099 A GB 1019099A
Authority
GB
United Kingdom
Prior art keywords
chips
cooled
melt
inert gas
spinning
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
GB100126/64A
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.)
SNIA Viscosa SpA
Original Assignee
SNIA Viscosa SpA
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 SNIA Viscosa SpA filed Critical SNIA Viscosa SpA
Publication of GB1019099A publication Critical patent/GB1019099A/en
Expired legal-status Critical Current

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
    • D01D1/00Treatment of filament-forming or like material
    • D01D1/10Filtering or de-aerating the spinning solution or melt
    • D01D1/103De-aerating
    • 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
    • D01D1/00Treatment of filament-forming or like material
    • D01D1/04Melting filament-forming substances
    • 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
    • D01D1/00Treatment of filament-forming or like material
    • D01D1/06Feeding liquid to the spinning head
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/60Monocomponent 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)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Artificial Filaments (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Finishing Walls (AREA)

Abstract

1,019,099. Melt-spinning polyamides. SNIA VISCOSA SOC. NATURALE INDUSTRIA APPLICAZIONI VISCOSA S.p.A. March 10, 1964 [March 15, 1963], No. 10026/64. Heading B5B. In melt-spinning polyamides, the polymer chips, after having been dried, by heating in vacuo, are artificially cooled, or allowed to cool spontaneously, in an atmosphere of inert gas to a temperature not exceeding 50‹ C., and preferably between 25‹ and 30‹ C., before being transferred to the feed hopper of the melt-spinning apparatus, preferably while still surrounded by an atmosphere of the inert gas. The chips may be artificially cooled or allowed to cool spontaneously in the apparatus in which they have been dried in vacuo, a dry inert gas such as dry nitrogen having been introduced into the drying chamber until the interior of the latter is at atmospheric pressure and cold water being circulated through the jacket of the drying chamber (which may be rotated to tumble the chips) until they have been cooled to the desired temperature. Alternatively the chips may be cooled, while they are being mechanically conveyed from the drier to the melt-spinning apparatus, by contacting them with a stream of a cooled dry inert gas such as dry nitrogen. In either case the initial humidity of the inert gas may be so controlled so that it does not exceed a predetermined level, such as 70 milligrams of moisture per cubic metre of gas. In a third method the hot dry chips are discharged from the drying chamber on to a hollow horizontal metallic plate through the interior of which flows a stream of cold water. The plate is enclosed in a chamber through which flows a stream of dry nitrogen and the polymer chips are caused to travel along the entire length of the plate by vibrating the plate. The cooled chips are discharged into a duct through which they are pneumatically conveyed to the melting apparatus by a current of dry nitrogen.
GB100126/64A 1963-03-15 1964-03-10 Improvements in or relating to the melt-spinning of polyamides Expired GB1019099A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT540263 1963-03-15

Publications (1)

Publication Number Publication Date
GB1019099A true GB1019099A (en) 1966-02-02

Family

ID=11120207

Family Applications (1)

Application Number Title Priority Date Filing Date
GB100126/64A Expired GB1019099A (en) 1963-03-15 1964-03-10 Improvements in or relating to the melt-spinning of polyamides

Country Status (7)

Country Link
US (1) US3345445A (en)
BE (1) BE645212A (en)
DE (1) DE1435677B1 (en)
GB (1) GB1019099A (en)
NL (2) NL6402668A (en)
NO (1) NO122604B (en)
SE (1) SE301690B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4470880A (en) * 1982-06-18 1984-09-11 Allied Corporation Method for separating a liquid waste finish composition

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1035107A (en) * 1974-04-09 1978-07-25 United States Gypsum Company Method and apparatus for extruding thermoplastic polymers
US5279783A (en) * 1992-01-30 1994-01-18 United States Surgical Corporation Process for manufacture of polyamide monofilament suture
CA2088458A1 (en) * 1992-01-30 1993-07-31 Cheng-Kung Liu Polyamide monofilament suture manufactured from higher order polyamide
US5458838A (en) * 1992-03-11 1995-10-17 Kabushiki Kaisha Kobe Seiko Sho Heating and extruding method for bulk preform
CN109023548B (en) * 2018-08-21 2020-04-14 江苏鸿顺合纤科技有限公司 Chemical fiber spinning drying process
CN108842197B (en) * 2018-08-21 2020-03-27 深圳市友邦工程塑料有限公司 Polyamide fiber production process

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE461923A (en) * 1940-08-02 1900-01-01
DE834420C (en) * 1942-10-21 1952-03-20 Glanzstoff Ag Method and device for spinning meltable plastics
GB839210A (en) * 1957-05-07 1960-06-29 British Celanese Improvements in or relating to spinning
BE584615A (en) * 1958-11-14 1900-01-01
US3040005A (en) * 1959-01-21 1962-06-19 Du Pont Process for increasing the molecular weight of polyamides
US3036335A (en) * 1959-06-11 1962-05-29 Nat Rubber Machinery Co Apparatus and method for extruding thermoplastic material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4470880A (en) * 1982-06-18 1984-09-11 Allied Corporation Method for separating a liquid waste finish composition

Also Published As

Publication number Publication date
SE301690B (en) 1968-06-17
DE1435677B1 (en) 1973-02-15
NL129742C (en)
BE645212A (en) 1964-09-14
US3345445A (en) 1967-10-03
NO122604B (en) 1971-07-19
NL6402668A (en) 1964-09-16

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