GB1190227A - Process for the treatment of Filaments and like Structures of Linear Polyesters - Google Patents

Process for the treatment of Filaments and like Structures of Linear Polyesters

Info

Publication number
GB1190227A
GB1190227A GB3772067A GB3772067A GB1190227A GB 1190227 A GB1190227 A GB 1190227A GB 3772067 A GB3772067 A GB 3772067A GB 3772067 A GB3772067 A GB 3772067A GB 1190227 A GB1190227 A GB 1190227A
Authority
GB
United Kingdom
Prior art keywords
filaments
heat treatment
seconds
carried out
range
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
GB3772067A
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst AG
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 Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Publication of GB1190227A publication Critical patent/GB1190227A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • D02J1/224—Selection or control of the temperature during stretching
    • 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
    • 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
    • D02J1/221—Preliminary treatments

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Artificial Filaments (AREA)

Abstract

1,190,227. Heating polyester filaments before drawing them. FARBWERKE HOECHST A.G. 16 Aug., 1967 [16 Aug., 1966], No. 37720/67. Heading B5B. The rate at which polyester filaments and like structures can be drawn without minute cavities or " bubbles " forming in the filaments during the drawing step is increased by subjecting the filaments prior to the drawing step to a heat treatment step which is carried out at a temperature T (‹C) and during a time t (sec.) such that T = A-X.(log e t) in which, with a duration of heat treatment of 0À3 to 3 seconds, A has any value in the range 77À7 to 95À7 and X = 7À6, and when t = 3 to 3600 seconds, A has any value in the range 72 to 90 and X = 2À48 and, when t = 3600 to 200,000 seconds A has any value in the range 54À6 to 72À6 and X = 0À354. The drawing step may be effected under such conditions that the filaments are thereby oriented and may be effected at ordinary or at elevated temperatures. When the drawing step is carried out at elevated temperatures, it is immaterial whether the filaments are cooled between the heat treatment and the drawing steps or whether they are heated to the temperature required for drawing directly after the heat treatment step. Any method of heating the filaments may be used in the heat treatment step and the filaments may either be prevented from shrinking or may be allowed to shrink to a controlled degree (preferably not more than about 10%) during this step. The filaments may consist of polyethylene terephthalate. The heat treatment of the undrawn filaments &c. can be carried out in a hot liquid, preferably water, in a heated gas or vapour, by radiated heat, dielectric preheating, or by contact with one or more heated surfaces. The heat treatment increases the speed at which the filaments may be drawn without minute cavities forming in them. The polyester used in all the examples is polyethylene terephthalate.
GB3772067A 1966-08-16 1967-08-16 Process for the treatment of Filaments and like Structures of Linear Polyesters Expired GB1190227A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF0049953 1966-08-16

Publications (1)

Publication Number Publication Date
GB1190227A true GB1190227A (en) 1970-04-29

Family

ID=7103409

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3772067A Expired GB1190227A (en) 1966-08-16 1967-08-16 Process for the treatment of Filaments and like Structures of Linear Polyesters

Country Status (6)

Country Link
AT (1) AT301739B (en)
CH (1) CH478930A (en)
DE (1) DE1660312A1 (en)
ES (1) ES343984A1 (en)
GB (1) GB1190227A (en)
NL (1) NL6711276A (en)

Also Published As

Publication number Publication date
DE1660312A1 (en) 1972-01-13
NL6711276A (en) 1968-02-19
ES343984A1 (en) 1968-12-16
AT301739B (en) 1972-09-11
CH478930A (en) 1969-09-30

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Legal Events

Date Code Title Description
414F Notice of opposition given (sect. 14/1949)
414A Case decided by the comptroller ** specification amended (sect. 14/1949)
SPA Amended specification published
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees