US2105852A - Manufacture of threads from viscose - Google Patents

Manufacture of threads from viscose Download PDF

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Publication number
US2105852A
US2105852A US85907A US8590736A US2105852A US 2105852 A US2105852 A US 2105852A US 85907 A US85907 A US 85907A US 8590736 A US8590736 A US 8590736A US 2105852 A US2105852 A US 2105852A
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US
United States
Prior art keywords
threads
viscose
xanthate
bath
cellulose
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 - Lifetime
Application number
US85907A
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English (en)
Inventor
Zetzsche Walther
Graumann Erich
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.)
IG Farbenindustrie AG
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IG Farbenindustrie 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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Application granted granted Critical
Publication of US2105852A publication Critical patent/US2105852A/en
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    • 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
    • D01D5/22—Formation of filaments, threads, or the like with a crimped or curled structure; with a special structure to simulate wool
    • 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
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/14—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using grooved rollers or gear-wheel-type members

Definitions

  • Our present invention relates to the manufacture of threads from viscose.
  • One of its objects is a process of producing threads from viscose cut into staples and having 5 an improved curliness as compared with those hitherto known. Further objects will be seen from thedetailed specification following hereafter.
  • a known process of imparting curliness to freshly spun threads of cellulose hydrate or cellulose ester consists in passing them between fluted rollers or by subjecting them to some other mechanical operation.
  • this known process is applied in the manufacture of viscose threads the operation must be applied to the fibers in a bath suitable for decomposing the viscose to produce cellulose hydrate or after the use of such a bath. It has been found that as the activity of the bath diminishes or as the kind of viscose used varies, and according to the point of time at which the rollers or like devices act upon the threads, different results are obtained; the kind and the strength of the curliness produced in the thread by the process are more or less accidental and not in accordance with any rule.
  • This invention relates to a process of this kind which can yield very constant results if the operation of precipitating the viscose is divided into two sections, namely a coagulation of the cellulose xanthate and decomposition of the latter into cellulose hydrate, and the mechanical operation for imparting curliness is applied to the fiber after the coagulation of the cellulose xanthate and before the decomposition into cellulose hydrate.
  • Such a bath may contain, for
  • an organic acid ammonium sulfate or sodium sulfate or a mixture of these salts, without acid or in the presence of a very small proportion of acid.
  • the threads After the threads have issued from the coagulation bath they are subjected to the action of the known devices for creasing and crimping the threads while they are travelling.
  • the threads may be crimped between fluted rollers or between a fluted roller and a yielding bed.
  • This decomposition can be brought about in known manner by chemical agents, for example by the known spinning bath or by a solution of a mineral acid or by a physical operation, for example by heating to a high temperature, which is not in itself an agent for decomposing cellulose xanthate.
  • the staple cutting machine preferably follows directly on the crimping device and is followed by the decomposing bath.
  • the xanthate threads are passed through the crimping device 20 to the cutting machine.
  • the cellulose hydrate threads are finally decomposed, preferably in a trough in which they float, or by being sprinkled on an endless permeable band which follows the cutting machine. Since the fibers are free to 25 shrink in cut condition the curliness is improved by decomposing the xanthate in the staple form, particularly as this decomposition is produced by the high temperature of the liquid bath and not by the chemical composition of the bath.
  • the bath for decomposing the xanthate threads need not necessarily be brought into action on the cut sliver, in which case the cutting machine may follow the decomposing bath.
  • the viscose from ripened alkali cellulose, with a content of 7 to 8 percent of cellulose and 5.5 to 7 per cent of alkali, is spun, preferably at a ripeness corresponding with a salt number of 5 to 7, through metal nozzles having 600 to 1200 40 perforations of suitable diameter, for example 0.08 mm., into a coagulation bath comprising 15 to 25 per cent of ammonium sulfate and 5 to 10 per cent of sodium sulfate and at a temperature between 10 and 90 C.
  • the xanthate 45 threads which may be guided over stretching rods, rollers, eyes or like stretching devices, are then taken by draft rollers and led to the fluted rollers.
  • a process of producing curled staple fibers from viscose which comprises spinning viscose into a precipitating bath in which the viscose is decomposed only to cellulose xanthate, subject-- ing the xanthate threads to a-mechanical curle ing operation, decomposing the xanthate threads to threads of cellulose hydrate and cutting the threads to staples.
  • a process of producing curled staple fibers from viscose which comprises spinning viscose into a precipitating bath in which the viscose is decomposed only to cellulose xanthate, subjecting the xanthate threads to a treatment on fluted rollers, decomposing the xanthate threadsto threads of cellulose hydrate and cutting the threads to staples.
  • a process of producing curled staple fibers from viscose which comprises spinning viscose made from ripened alkali cellulose and containing 7 to 8 per cent of cellulose and 5 to 7 per cent of alkali through nozzles being provided with 600 to 1200 holes having a diameter of 0.08
  • a process of producing curled staple fibers from viscose including the step of cutting the threads to staples which comprises spinning viscose into a precipitating bath in which the viscose is decomposed only to cellulose xanthate, subjecting the xanthate threads to a mechanical curling operation and decomposing the threads to threads of cellulose hydrate.
  • a process of producing curled staple fibers from viscose which comprises spinning viscose into a precipitating bath in which the viscose is decomposed only to cellulose xanthate, subjecting the xanthate threads to a mechanical curling operation, cutting the threads to staples and decomposing the cut threads to threads oi cellulose hydrate.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Artificial Filaments (AREA)
US85907A 1935-06-27 1936-06-18 Manufacture of threads from viscose Expired - Lifetime US2105852A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI52652D DE748053C (de) 1935-06-27 1935-06-27 Verfahren zur Herstellung von gekraeuselter Zellwolle aus Viskose

Publications (1)

Publication Number Publication Date
US2105852A true US2105852A (en) 1938-01-18

Family

ID=5833031

Family Applications (1)

Application Number Title Priority Date Filing Date
US85907A Expired - Lifetime US2105852A (en) 1935-06-27 1936-06-18 Manufacture of threads from viscose

Country Status (5)

Country Link
US (1) US2105852A (en(2012))
CH (1) CH220173A (en(2012))
DE (1) DE748053C (en(2012))
FR (2) FR807707A (en(2012))
NL (2) NL43795C (en(2012))

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2420033A (en) * 1941-09-10 1947-05-06 Robert A Fairbairn Method and apparatus for separating fibers
US2435891A (en) * 1941-06-24 1948-02-10 American Viscose Corp Method and apparatus for crimping textile fibrous material
US3034196A (en) * 1960-03-18 1962-05-15 Du Pont Alternately crimped staple fiber

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE363379C (de) * 1920-11-14 1922-11-07 Heinrich Voss Verfahren zum Kraeuseln kuenstlicher Faeden
DE672876C (de) * 1934-07-09 1939-03-11 Hans Radestock Dr Ing Verfahren zur Herstellung von gekraeuselten Kunstseidefaeden beim Spinntopfspinnen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2435891A (en) * 1941-06-24 1948-02-10 American Viscose Corp Method and apparatus for crimping textile fibrous material
US2420033A (en) * 1941-09-10 1947-05-06 Robert A Fairbairn Method and apparatus for separating fibers
US3034196A (en) * 1960-03-18 1962-05-15 Du Pont Alternately crimped staple fiber

Also Published As

Publication number Publication date
FR48797E (fr) 1938-06-23
DE748053C (de) 1944-10-25
CH220173A (de) 1942-03-31
NL45615C (en(2012)) 1939-04-15
NL43795C (en(2012)) 1938-07-15
FR807707A (fr) 1937-01-20

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