GB1268908A - Improved melt spinning process for aromatic polyesters - Google Patents

Improved melt spinning process for aromatic polyesters

Info

Publication number
GB1268908A
GB1268908A GB26429/69A GB2642969A GB1268908A GB 1268908 A GB1268908 A GB 1268908A GB 26429/69 A GB26429/69 A GB 26429/69A GB 2642969 A GB2642969 A GB 2642969A GB 1268908 A GB1268908 A GB 1268908A
Authority
GB
United Kingdom
Prior art keywords
air
venturi tube
force
forwarding force
forwarding
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
GB26429/69A
Inventor
James Duncan Bremner
Iain Alexander Mclellan
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB26429/69A priority Critical patent/GB1268908A/en
Priority to BE750515D priority patent/BE750515A/en
Priority to NL7007336A priority patent/NL7007336A/xx
Priority to US39525A priority patent/US3706826A/en
Priority to FR7018827A priority patent/FR2048728A5/fr
Priority to DE19702025109 priority patent/DE2025109A1/en
Priority to JP45043947A priority patent/JPS494014B1/ja
Publication of GB1268908A publication Critical patent/GB1268908A/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
    • D01D5/08—Melt spinning methods
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
    • 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
    • D01D5/08—Melt spinning methods
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters

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)

Abstract

1,268,908. Melt spinning aromatic polyesters. IMPERIAL CHEMICAL INDUSTRIES Ltd. 28 April, 1970 [23 May, 1969], No. 26429/69. Heading B5B. In a process for spinning an aromatic polyester comprising :-(a) extruding a filamentary stream at a controlled linear speed in the molten state, (b) cooling such stream from its initially molten state through an intermediate plastic state to a solid state, and (c) hauling off such solidified filament at a higher controlled linear speed, a method of reducing the optical birefringence of such solidified filament comprises: (i) applying a forwarding force to such filamentary stream in a region in which it is in such intermediate plastic state, (ii) the forwarding force being sufficiently small such that the filament tension between the point of application of the forwarding force and the point of hauling off is always positive. The forwarding force may be applied by at least one driven roller, which may be heated. The forwarding force may be applied by a fluid drag, e.g. by an air ejector. The polyester may be polyethylene terephthalate. As shown in Fig. 1 of the drawings, a spinning pack 11 with a spinneret 12 at its base, extrudes filamentary streams 13 which at first are subjected to delayed cooling in the region 14 which is partially enclosed in the thermostated box 15 used to heat the pack 11. An air ejector 16 surrounds the threadline at a point between the spinneret 12 and a spin finish applicator 17. The filaments are wound up on a bobbin 18. As shown in Fig. 2, a suitable form of air ejector comprises a short wide bore Venturi tube 21 held by a screw-thread in a casing member 22 with an air inlet duct 23 connected to a compressed air supply line 24 by a valve 25. Air is distributed round the Venturi tube in the chamber 26 and escapes through an annular slot 27. In operation a high-speed inward air flow through the annular slot 27 tends to bend downwards parallel with the wall 28 of the Venturi tube 21, thus entraining with it air in the upper throat 29 of the Venturi tube 21. This entrained air in turn applies a downward force to filaments passing through the Venturi tube.
GB26429/69A 1969-05-23 1969-05-23 Improved melt spinning process for aromatic polyesters Expired GB1268908A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB26429/69A GB1268908A (en) 1969-05-23 1969-05-23 Improved melt spinning process for aromatic polyesters
BE750515D BE750515A (en) 1969-05-23 1970-05-15 MELTED STATE SPINNING PROCESS
NL7007336A NL7007336A (en) 1969-05-23 1970-05-21
US39525A US3706826A (en) 1969-05-23 1970-05-21 Melt spinning process
FR7018827A FR2048728A5 (en) 1969-05-23 1970-05-22
DE19702025109 DE2025109A1 (en) 1969-05-23 1970-05-22 Sohmeltspinning process
JP45043947A JPS494014B1 (en) 1969-05-23 1970-05-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB26429/69A GB1268908A (en) 1969-05-23 1969-05-23 Improved melt spinning process for aromatic polyesters

Publications (1)

Publication Number Publication Date
GB1268908A true GB1268908A (en) 1972-03-29

Family

ID=10243490

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26429/69A Expired GB1268908A (en) 1969-05-23 1969-05-23 Improved melt spinning process for aromatic polyesters

Country Status (7)

Country Link
US (1) US3706826A (en)
JP (1) JPS494014B1 (en)
BE (1) BE750515A (en)
DE (1) DE2025109A1 (en)
FR (1) FR2048728A5 (en)
GB (1) GB1268908A (en)
NL (1) NL7007336A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4442057A (en) * 1980-05-30 1984-04-10 Imperial Chemical Industries Limited Melt spinning process
US5070185A (en) * 1987-12-22 1991-12-03 Basf Corporation High shrinkage polyester fibers and method of preparation

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3946100A (en) * 1973-09-26 1976-03-23 Celanese Corporation Process for the expeditious formation and structural modification of polyester fibers
DE2618406B2 (en) * 1976-04-23 1979-07-26 Karl Fischer Apparate- & Rohrleitungsbau, 1000 Berlin Process for producing pre-oriented filament yarns from thermoplastic polymers
CH613232A5 (en) * 1977-02-23 1979-09-14 Schutz Fuer Ind Forschung Ag
DE3503818C1 (en) * 1985-02-05 1986-04-30 Reifenhäuser GmbH & Co Maschinenfabrik, 5210 Troisdorf Device for stretching monofilament bundles
CA2038164C (en) * 1990-03-14 1999-02-09 Keiji Kobayashi Air gun for the production of non-woven fabric and non-woven fabric producing apparatus
US5976431A (en) * 1993-12-03 1999-11-02 Ronald Mears Melt spinning process to produce filaments
CN104947208B (en) * 2015-07-02 2019-04-30 南通百博丝纳米科技有限公司 Prepare the spinning appts and device for spinning of nanofiber
DE102017123992A1 (en) * 2017-10-16 2019-04-18 Kraussmaffei Technologies Gmbh Single screw plasticizing
CN111793839A (en) * 2020-06-30 2020-10-20 浙江海利环保科技股份有限公司 Method for delaying filament bundle cooling spinning of multi-F fine denier regenerated polyester filament

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4442057A (en) * 1980-05-30 1984-04-10 Imperial Chemical Industries Limited Melt spinning process
US5070185A (en) * 1987-12-22 1991-12-03 Basf Corporation High shrinkage polyester fibers and method of preparation

Also Published As

Publication number Publication date
DE2025109A1 (en) 1970-11-26
BE750515A (en) 1970-11-16
JPS494014B1 (en) 1974-01-30
NL7007336A (en) 1970-11-25
US3706826A (en) 1972-12-19
FR2048728A5 (en) 1971-03-19

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