GB581390A - Improvements in or relating to the manufacture of synthetic linear polyamide filaments and yarns - Google Patents

Improvements in or relating to the manufacture of synthetic linear polyamide filaments and yarns

Info

Publication number
GB581390A
GB581390A GB356045A GB356045A GB581390A GB 581390 A GB581390 A GB 581390A GB 356045 A GB356045 A GB 356045A GB 356045 A GB356045 A GB 356045A GB 581390 A GB581390 A GB 581390A
Authority
GB
United Kingdom
Prior art keywords
passed
inert gas
yarns
feeding hopper
melt
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
GB356045A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Priority to GB356045A priority Critical patent/GB581390A/en
Publication of GB581390A publication Critical patent/GB581390A/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
    • D01D1/00—Treatment of filament-forming or like material
    • D01D1/06—Feeding liquid to the spinning head

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)

Abstract

<PICT:0581390/IV/1> The melt spinning of synthetic linear polyamide filaments and yarns may be operated for long periods of time without the formation of "drips" at the spinning face, if a stream of inert gas, e.g. nitrogen, is passed through the molten mass of the material. The filaments and yarns so obtained have improved and more uniform physical characteristics. The temperature of the inert gas is preferably not below 100 DEG C., and in addition to being passed through the molten material the gas may also be passed over the solid material prior to melting. Solid polyamide particles are fed to charging hopper 1 and are allowed to pass valve 3, as required, into feeding hopper 2 and melt chamber 10. The feeding hopper 2 is surrounded by heating jacket 4 and a heating medium is passed through coil 11 which serves to melt the polyamide. The inert gas is passed through the inlet 9 and leaves the feeding hopper by outlets 7 or 8. The charging hopper is also provided with inlet and outlet means 15 and 16 for the passage of inert gas therethrough. Examples are given in which polyhexamethylene adipamide chips are fed to the apparatus. The heating jacket is maintained at 200 DEG C., and oxygen-free nitrogen is passed through the molten material. Suitable synthetic fibre-forming polyamides are prepared by processes described in Specifications 461,236 and 461,237. Specifications 533,307, 549,208 and 555,130 also are referred to.
GB356045A 1945-02-13 1945-02-13 Improvements in or relating to the manufacture of synthetic linear polyamide filaments and yarns Expired GB581390A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB356045A GB581390A (en) 1945-02-13 1945-02-13 Improvements in or relating to the manufacture of synthetic linear polyamide filaments and yarns

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB356045A GB581390A (en) 1945-02-13 1945-02-13 Improvements in or relating to the manufacture of synthetic linear polyamide filaments and yarns

Publications (1)

Publication Number Publication Date
GB581390A true GB581390A (en) 1946-10-10

Family

ID=9760646

Family Applications (1)

Application Number Title Priority Date Filing Date
GB356045A Expired GB581390A (en) 1945-02-13 1945-02-13 Improvements in or relating to the manufacture of synthetic linear polyamide filaments and yarns

Country Status (1)

Country Link
GB (1) GB581390A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1154230B (en) * 1957-05-07 1963-09-12 British Celanese Apparatus for continuous melt spinning of linear high polymers such as polyamides and polyesters

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1154230B (en) * 1957-05-07 1963-09-12 British Celanese Apparatus for continuous melt spinning of linear high polymers such as polyamides and polyesters

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