US3097914A - Process for the production of a ribbon filament yarn of regenerated cellulose - Google Patents

Process for the production of a ribbon filament yarn of regenerated cellulose Download PDF

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Publication number
US3097914A
US3097914A US136580A US13658061A US3097914A US 3097914 A US3097914 A US 3097914A US 136580 A US136580 A US 136580A US 13658061 A US13658061 A US 13658061A US 3097914 A US3097914 A US 3097914A
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United States
Prior art keywords
percent
filaments
cellulose
production
ribbon
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Expired - Lifetime
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US136580A
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English (en)
Inventor
Peter Lewis
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Akzo Nobel UK PLC
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Courtaulds PLC
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    • 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
    • D01F2/08—Composition of the spinning solution or the bath

Definitions

  • the present process makes possible the production of lower filament denier ribbon filament yarns without using expensive multi-slot jets.
  • the present invention is a process for the production of a ribbon filament yarn of regenerated cellulose comprising extruding viscose having a cellulose to caustic soda ratio of at least 1, and at a salt point between 4 and 6 through a multihole jet the holes of which have no re-en-trant segment in their cross-sections into a coagulating bath maintained at a temperature of 40 C. to 60 C. and containing at least 24 percent of sodium sulphate, from 9 to 12 percent of sulphuric acid and not more than 0.02 percent of zinc sulphate as an impurity, drawing the incompletely regenerated filaments from the bath and subsequently completely regenerating the filaments.
  • Jets having circular holes are particularly preferred for [their ease of manufacture and relative cheapness.
  • the ratio of the cellulose to the caustic soda in the viscose is also important. The higher that ratio is, the smoother the elongated section of the filament, whereas viscoses in which the ratio is less than 1 cannot be spun into ribbon filaments by the present process.
  • the salt figure of the viscose becomes more critical as the ratio of cellulose to caustic soda in the viscose is reduced.
  • ribbon filaments can be made from viscose containing 8.3 percent cellulose and 5.8 percent caustic soda, i.e. a viscose having a cellulose to caustic soda ratio of more than 1.4, when the salt figure is between about 4 and 6, but the salt point of a viscose containing 7.6 percent cellulose and 6.2 percent caustic soda, has to be between about 4 and 4.5.
  • those viscoses according to this invention which have a cellulose to caustic soda ratio between 1 and about 1.25 should also have a salt point of from 4 to 4.5.
  • Example 1 A viscose containing 7 .6 percent of cellulose and 6.2 percent of caustic soda was aged to a salt figure of 4 and then extruded through a 5 0 hole jet into a bath maintained at 55 C., and containing 12 percent of sulphuric acid, 27 percent of sodium sulphate and no zinc sulphate.
  • the jet holes were circular, each having a diameter of 0.005 of an inch.
  • the filaments were drawn through the bath for 24 inches before being taken from the bath and lapped three times on a take-up godet having a peripheral speed of 54 metres per minute.
  • the filaments were stretched by 30 percent in passing to a second godet having a peripheral speed of 70 metres per minute. After leaving the second godet the filaments were collected in a centrifugal box in the form of a cake which was washed successfully with dilute acid and Water.
  • the dried filaments had the following average properties:
  • Example 2 Tenacity -g.p.d Extensibility percent
  • Example 2 The procedure of Example 1 was followed, using a viscose containing 8.3 percent of cellulose and 5.8 percent of caustic soda, aged to a salt figure of 5.5. The bath contained 10.5 percent of sulphuric acid, 24 percent of sodium sulphate and no zinc sulphate and was maintained at a temperature of 55 C.
  • the averaged properties of the filaments produced were:
  • Viscoses of salt FIGURES 4, 5 and 6 were also used successfully, but viscoses of salt figures 3 and 7.5 could not be used.
  • a process for the production of a ribbon filament yarn of regenerated cellulose consisting of extruding viscose having a cellulose to caustic soda ratio of at least 1 and at a salt point between 4 and 6, through a multihole jet the holes of which have no re-entrant segment in their cross-sections into a coagulating bath maintained at a temperature of 40 C. to 60 C. and containing at least 24 percent of sodium sulphate, from 9 to 12 percent of sulphuric acid and not more than 0.02 percent of zinc sulphate as an impurity, drawing the incompletely regenerated filaments from the bath and subsequently completely regenerating the filaments.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)
US136580A 1960-09-07 1961-09-07 Process for the production of a ribbon filament yarn of regenerated cellulose Expired - Lifetime US3097914A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB30795/60A GB916318A (en) 1960-09-07 1960-09-07 Improvements in and relating to the production of regenerated cellulose filaments from viscose

Publications (1)

Publication Number Publication Date
US3097914A true US3097914A (en) 1963-07-16

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US136580A Expired - Lifetime US3097914A (en) 1960-09-07 1961-09-07 Process for the production of a ribbon filament yarn of regenerated cellulose

Country Status (6)

Country Link
US (1) US3097914A (fr)
BE (1) BE607955A (fr)
FR (1) FR1302067A (fr)
GB (1) GB916318A (fr)
NL (1) NL269028A (fr)
SE (1) SE219624C1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4402899A (en) * 1981-07-13 1983-09-06 International Telephone And Telegraph Corporation Zinc-free preparation of rayon fibers
US4405549A (en) * 1981-07-13 1983-09-20 International Telephone And Telegraph Corporation Zinc-free preparation of rayon fibers
EP0574762A1 (fr) * 1992-06-13 1993-12-22 Hoechst Aktiengesellschaft Procédé pour la fabrication de fibres de viscose avec section en forme de ruban

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1366166A (en) * 1919-02-04 1921-01-18 Courtaulds Ltd Squirting-nozzle for use in the manufacture of strips and the like from viscose and analogous matter and for similar purposes
US1964659A (en) * 1933-02-09 1934-06-26 Delaware Rayon Company Spinnerette
GB481565A (en) * 1936-08-08 1938-03-11 Ig Farbenindustrie Ag Improvements in the manufacture of artificial threads
US2327516A (en) * 1939-07-22 1943-08-24 Fink Heinrich Manufacture of artificial filaments and fibers from viscose
US2535044A (en) * 1947-04-26 1950-12-26 Du Pont Spinning of viscose

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1366166A (en) * 1919-02-04 1921-01-18 Courtaulds Ltd Squirting-nozzle for use in the manufacture of strips and the like from viscose and analogous matter and for similar purposes
US1964659A (en) * 1933-02-09 1934-06-26 Delaware Rayon Company Spinnerette
GB481565A (en) * 1936-08-08 1938-03-11 Ig Farbenindustrie Ag Improvements in the manufacture of artificial threads
US2327516A (en) * 1939-07-22 1943-08-24 Fink Heinrich Manufacture of artificial filaments and fibers from viscose
US2535044A (en) * 1947-04-26 1950-12-26 Du Pont Spinning of viscose

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4402899A (en) * 1981-07-13 1983-09-06 International Telephone And Telegraph Corporation Zinc-free preparation of rayon fibers
US4405549A (en) * 1981-07-13 1983-09-20 International Telephone And Telegraph Corporation Zinc-free preparation of rayon fibers
EP0574762A1 (fr) * 1992-06-13 1993-12-22 Hoechst Aktiengesellschaft Procédé pour la fabrication de fibres de viscose avec section en forme de ruban

Also Published As

Publication number Publication date
GB916318A (en) 1963-01-23
FR1302067A (fr) 1962-08-24
NL269028A (nl) 1964-06-25
SE219624C1 (sv) 1968-03-19
BE607955A (fr) 1962-01-02

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