US1902922A - Apparatus for dry-spinning artificial textile fibers with recovery of the volatile solvents - Google Patents

Apparatus for dry-spinning artificial textile fibers with recovery of the volatile solvents Download PDF

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Publication number
US1902922A
US1902922A US306940A US30694028A US1902922A US 1902922 A US1902922 A US 1902922A US 306940 A US306940 A US 306940A US 30694028 A US30694028 A US 30694028A US 1902922 A US1902922 A US 1902922A
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US
United States
Prior art keywords
cell
spinning
solvent
dry
recovery
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Expired - Lifetime
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US306940A
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English (en)
Inventor
Viviani Ettore
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Individual
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Individual
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Publication of US1902922A publication Critical patent/US1902922A/en
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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
    • D01D5/04—Dry spinning methods

Definitions

  • the object of the present invention is to obviate the aforesaid drawbacks, or at least to restrict the cooling and'subsequent heating of the gaseous mixture present in the cell to I a'small. quantity thereof.
  • the invention which enables the spinning to be conducted in closed cells, renders it unnecessary to remove and cool the gaseous mixture which fills the spinningjcell, byproviding a limited surface wvhich is cooled to an adequate degree, in the spinning cell itself. This temperature should be so calculated that it does not exceed 40 the temperature of the spinning cell (measured in the immediate vicinity of the filament) and is, in any event, below'the boiling pointrof the solvent or solvents;
  • Fig.1 is a diagrammatic vertical section.
  • the jackets'p'ace B enables thespinning cell A to be warmed by means of hot air, hot; Water or steam.
  • the cell are disposed one or more tubes C through which cold water orbrine is circa lated for cooling purposes.
  • V 'As' already mentioned the vaportension of the s'olvent'vapors formed during the spin ni'ng process tends to attain the value cor- I
  • Fig. 3 is a similar view bf anothermodifi'caso I responding to thetemperature of the cooling 'device. fThe cooling, water or brine enters the. tube Czat C" and issuestherefrom atE.
  • the a paratu's may, of course, vary in de-- signs T us,in Fig; 2 thecooler consist'sof a'* plain tube C through which water or brine fis circulating.
  • the condensed solvents collect in p the lowermost part "of the spinning cell, and are drawn oil through the the invention as cla ms- I V I I heating coils, electrical resistance and so forth, without departing fromthe scope of the invention;
  • Fig. 3 represents still another embodiment.
  • the cooler is confined to the lowermost part of the cell.
  • the upper part is heated by the liquid circulating in the heating acket B, which it enters at T and leaves at
  • the lower part is cooled by the cooling jacket B through'which water or brineat a suitable temperature is circulated.
  • This latter arrangement insures a quiescent filament during the spinning process, since the gentle currents resulting from the sinking of the vapors from the hot to the coldlzone of the cell facilitate the spinning process itself.
  • the solvents recovered in this manner are in a high state of purity, and can be used again without intermediate distillation.
  • a spining cell for use in dry-spinning 'artificial textile fibers with recovery of the solvent .cont-ained in the spinning solution having, in combination, means for heating the cell, and meansin thecell for condensingsolvent vapors.
  • solvent containedfin the spinning solution having, in combinatiom'means torheating V the upper portion "of the .cell,means for cooling the lower portion of the cell to'the temperature I of condensation of the solvent artificial textile fibers with solvent contained in the spinning solution,
  • vapors within the cell and means including a siphon for collecting and withdrawing the condensate from the cell.
  • V i I 15 A process of dry spinning artificial silk including continuous extrusion of a spinning solution into a cell, continuously passing over the filament thus formed a heated gas in which the solvent evaporates, and;

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
US306940A 1928-04-07 1928-09-19 Apparatus for dry-spinning artificial textile fibers with recovery of the volatile solvents Expired - Lifetime US1902922A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT309158X 1928-04-07

Publications (1)

Publication Number Publication Date
US1902922A true US1902922A (en) 1933-03-28

Family

ID=11232770

Family Applications (1)

Application Number Title Priority Date Filing Date
US306940A Expired - Lifetime US1902922A (en) 1928-04-07 1928-09-19 Apparatus for dry-spinning artificial textile fibers with recovery of the volatile solvents

Country Status (5)

Country Link
US (1) US1902922A (fr)
BE (1) BE353940A (fr)
DE (1) DE489964C (fr)
FR (1) FR658700A (fr)
GB (1) GB309158A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2451854A (en) * 1944-06-15 1948-10-19 Du Pont Dry spinning apparatus
US2472842A (en) * 1942-08-25 1949-06-14 Rhodiaceta Apparatus and method of dry spinning vinyl compounds

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL105057C (fr) * 1957-04-30

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2472842A (en) * 1942-08-25 1949-06-14 Rhodiaceta Apparatus and method of dry spinning vinyl compounds
US2451854A (en) * 1944-06-15 1948-10-19 Du Pont Dry spinning apparatus

Also Published As

Publication number Publication date
BE353940A (fr)
GB309158A (en) 1930-01-29
FR658700A (fr) 1929-06-07
DE489964C (de) 1930-01-23

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