GB716827A - Improvements relating to a method for obtaining fibers or films by the wet-spinning and wet-forming processes - Google Patents

Improvements relating to a method for obtaining fibers or films by the wet-spinning and wet-forming processes

Info

Publication number
GB716827A
GB716827A GB12891/52A GB1289152A GB716827A GB 716827 A GB716827 A GB 716827A GB 12891/52 A GB12891/52 A GB 12891/52A GB 1289152 A GB1289152 A GB 1289152A GB 716827 A GB716827 A GB 716827A
Authority
GB
United Kingdom
Prior art keywords
solvent
bath
liquid
washing liquid
precipitant
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
GB12891/52A
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.)
Solutia Inc
Original Assignee
Chemstrand Corp
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 Chemstrand Corp filed Critical Chemstrand Corp
Publication of GB716827A publication Critical patent/GB716827A/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
    • D01D5/06—Wet 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
    • D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/18—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/017—Filament stretching apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Artificial Filaments (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

A solution of an artificial or synthetic film or fibre forming material is extruded into a bath comprising a mixture of a precipitant and a liquid which is the solvent phase of the spinning solution, the fibres or film being withdrawn upwardly from the bath through a washing liquid flowing in a confined stream <PICT:0716827/IV (a)/1> in an opposite direction to the travel of the fibres or film and which comprises the precipitating liquid and optionally a minor proportion of the extrusion solvent, the washing liquid being collected and liquid collected from the washing step being continuously delivered to the precipitating bath at a predetermined rate dependent upon the proportions of precipitant and solvent in the washing liquid and upon the amount of solvent being introduced into the precipitating bath from the extrusion solution so that the proportions of precipitant and solvent in the precipitating bath remain constant. The fibre or film forming material may be cellulose acetate, copolymers of vinyl chloride with vinyl acetate or acrylonitrile, polyamides, polyesters, copolymers of acrylonitrile with vinyl acetate, styrene, 2-vinyl pyridine, 5-vinyl-2 methylpyridine, isobutene, dimethylfumarate, methylmethacrylate, methacrylonitrile or acrylic acid and its esters. The solvent, selected according to the film or fibre forming material, may be acetone, hot phenol, formamide, chloroform, dimethylformamide, dimethylacetamide, or dimethyl propionamide. The precipitant which is an extractive for the solvent and is inert to the fibre or film forming material, may be water. At the start of a spinning operation the proportions of precipitant and solvent required in the liquid being delivered from the washing step and the rate at which it is delivered to maintain constant proportions in the precipitating bath are determined by observation of the refractive index of the bath. The washing liquid may be heated up to 100 DEG C. and when the spinning is conducted at temperatures below this the collected washing liquid is cooled. The fibres may be stretched while passing through the washing liquid or subsequently. An apparatus for carrying out the method comprises a precipitating bath 2 in which the solution is extruded from a nozzle 1 and which is maintained at a constant level by an overflow 16. Washing liquid is delivered from a pipe 10 into a vessel 9 the level being adjusted by an overflow 12, and a stream of washing liquid flows through a channel 6 into a collecting vessel 13 provided with cooling apparatus 18 and an overflow 17. Liquid from the vessel 13 is delivered through a pipe 14 and valve 15 to the precipitating bath. The fibre is guided through the bath 2 by a thread guide 3 and through the channel 6 by godets 4 and 7 over which and over spacing guides 5 and 8 it may be lapped several times.
GB12891/52A 1951-06-18 1952-05-21 Improvements relating to a method for obtaining fibers or films by the wet-spinning and wet-forming processes Expired GB716827A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US232208A US2611929A (en) 1951-06-18 1951-06-18 Method of producing shaped articles from artificial or synthetic fiberor film-forming materials

Publications (1)

Publication Number Publication Date
GB716827A true GB716827A (en) 1954-10-13

Family

ID=22872263

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12891/52A Expired GB716827A (en) 1951-06-18 1952-05-21 Improvements relating to a method for obtaining fibers or films by the wet-spinning and wet-forming processes

Country Status (6)

Country Link
US (1) US2611929A (en)
BE (1) BE512121A (en)
CH (1) CH304354A (en)
DE (1) DE966316C (en)
FR (1) FR1063170A (en)
GB (1) GB716827A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2888317A (en) * 1953-04-10 1959-05-26 Du Pont Production of polyacrylonitrile filaments of high uniform density
GB797194A (en) * 1955-07-11 1958-06-25 British Celanese Improvements in the manufacture of artificial filamentary materials
US2943598A (en) * 1956-10-08 1960-07-05 Gen Electric Wire coating apparatus
US2983571A (en) * 1958-04-23 1961-05-09 Dow Chemical Co Process for wet spinning and washing synthetic fibers
US2970884A (en) * 1958-05-07 1961-02-07 Dow Chemical Co Modified acrylonitrile polymer fibers with increased shrinkability and dyeability
US3006027A (en) * 1958-06-27 1961-10-31 Spinnfaster Ag Method and apparatus for spinning and stretching viscose rayon
NL272355A (en) * 1960-12-16
US3124631A (en) * 1961-03-22 1964-03-10 Process for providing high density dry spun
US4185063A (en) * 1975-02-04 1980-01-22 Chute Challoner R Shaping and stretching aqueous formic acid solutions of polypyrrolidone, filament and film products
US5496510A (en) * 1994-08-23 1996-03-05 Capone; Gary J. Acrylonitrile filament process
CN102423141A (en) * 2011-08-03 2012-04-25 东华大学 Preparation method for cigarette filter tip adopting electrostatically spun cellulose acetate membrane
CN104451914B (en) * 2014-12-09 2017-01-25 成都丽雅纤维股份有限公司 Acid feeder for viscose fiber spinning machine
CN104451915B (en) * 2014-12-09 2017-01-11 成都丽雅纤维股份有限公司 Filtering type bath of spinning machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2681265A (en) * 1948-11-27 1954-06-15 American Viscose Corp Spinning artificial filaments

Also Published As

Publication number Publication date
DE966316C (en) 1957-07-25
US2611929A (en) 1952-09-30
CH304354A (en) 1955-01-15
BE512121A (en)
FR1063170A (en) 1954-04-30

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