US1754427A - Process and apparatus for the manufacture of artificial threads of derivates of cellulose - Google Patents

Process and apparatus for the manufacture of artificial threads of derivates of cellulose Download PDF

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Publication number
US1754427A
US1754427A US94000A US9400026A US1754427A US 1754427 A US1754427 A US 1754427A US 94000 A US94000 A US 94000A US 9400026 A US9400026 A US 9400026A US 1754427 A US1754427 A US 1754427A
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Prior art keywords
cell
threads
spinning
heating
derivates
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Expired - Lifetime
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US94000A
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English (en)
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Hoffmann Konrad
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Individual
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Individual
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Publication of US1754427A publication Critical patent/US1754427A/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
    • D01D5/04—Dry 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
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • D01F2/24—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives
    • D01F2/28—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives from organic cellulose esters or ethers, e.g. cellulose acetate
    • D01F2/30—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives from organic cellulose esters or ethers, e.g. cellulose acetate by the dry spinning process

Definitions

  • the invention relates to a process and apparatus suitable for the manufacture of articial threads from derivates of cellulose according to the dry stretch-spinning method.
  • the s inning nozzle 3 is arranged at the top of t e spinning cell and at the bottom there is the thread collector or guide 4, where the threads f are collected and passed'through Y a small opening 5 of the spinning cell and .opening 6 of the, heating cell into the latter during operation.
  • Fresh air is admitted to the spinning cell through holes 7 provided close to the nozzle, and passes through the spinning cell from the top tothe bottom according to the principle of continuous current, that is to say in the direction of the pull of the threads, and it issues through the suction hole 8. From this it follows that there is no heating of the air in the spinning cell at all.
  • the spinning cell will work at room temperature or according to the degree of cooling of the admitted air and the additional cooling caused by the evaporation of the solving agent, even below such temperature.
  • the motion of air within the cell in the absence of almost any eddies, the passing of said air in the direction of the pull of the thread and the low temperature have proved extraordinarily advantageous for the formation of threads according to the present invention. Under these conditions it is in particular much easier in contradistinction to the heated spinning cells used up to the present, to draw the thread to a high fineness, presumably on account of the fact that the smooth, continuous cool current of air is withdrawing the D spectively. Likewise a door 11 can be provided in the spinning cell.
  • the newly formed threads are wound simultaneously with the heat treatment on suitable spools 16 or on reels.
  • suitable spools 16 or on reels The drawings show spools or rollers used for this purpose. Winding may be done there, however, in any other practical manher, for instance by simultaneously twisting the threads on twisting spools.
  • the heating cell is provided with a suitable door 12, air admission holes 13, channel 14 for the exit of air, heating elements 15 and spools 16. Instead of arranging heating elements within the heating cell proper, previously heated air may be likewise admitted to said ce
  • the doors 9, 10, 11 and 12 provide means for inspection and access to the cells 1 and 2,
  • the doors 11 and 12 being used to gain access into the interior of the cells and the parts contained therein, for example, for the purpose of' charging and cleaning the spinning nozzle 3 and spool 16 and for observing the spinning process from the outside of said cells, while the doors 9 and 10 are used for starting the spinning process, according to which, doors 9 and 10 being opened, the thread is led from the nozzle 3 over the auxiliary thread guide 4: to the roller 16. If the spinning process after being started, progresses normally and it is certain that all nozzle openings operate uniformly, the threads, by means of a hook, are disposed over the thread guide 4, after which the doors 9 and 10 are again closed.
  • the said heating cell not only serves the purpose of recovering the last portions of the solving agents, but its effect is besides closely related with the quality of the thread obtained according 'to the present invention. If the spinning apparatus is being operated without heating the heating cell 2, the spinning cell will work faultlessly and the threads can be collected faultlessl in the spooling cell 2 but the threads will e milky I and without gloss. If, however, during operation, the spooling cell or the air passing through it. is heated to about from 35 to 45 degrees centigrade, glossy threads are obtained.
  • the threads may pass either freely or on carriers through the properly dimensioned heating cell for a distance sufficient to completely expel the solvents and obtam a proper gloss on the threads, whereupon they are wound on suitable spools or reels outside of the heating cell.
  • a process for manufacturing threads from derivates of cellulose according to the dry-stretch method which comprises drystretch spinning the threads in one unheated cell, passing them to a second closed cell, and heating and ventilating the second cell.
  • a process for manufacturing threads from derivates of cellulose which comprises drystretch spinning the thread in an unheated cell at room temperature, conducting the thread therefrom into a second cell, spooling or reeling the thread in such second cell and heating and ventilating the second cell.
  • a process for manufacturing threads from derivates of cellulose which comprises drystretch spinning the thread in an unheated cell at room temperature and leading vapors therefrom for recovery of solvent, and leading the thread from said cell into a second heated cell, ventilating the heated cell an withdrawing vapors therefrom for recovery of solvent, and spooling or reeling the thread in the heated cell.
  • a process for manufacturing threads from derivates of cellulose by the dry-stretch method which comprises spinning the thread in an unheated cell at room temperature, d1- recting a current of air through the cell 1n the direction of the thread being spun and air from the cell for solvent recovery, then passing the thread into a second adjacent cell, heating the cell, exhaustlng the heated cell for solvent recovery, and spooling the thread in said second cell.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Prostheses (AREA)
US94000A 1925-03-12 1926-03-11 Process and apparatus for the manufacture of artificial threads of derivates of cellulose Expired - Lifetime US1754427A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE249141X 1925-03-12

Publications (1)

Publication Number Publication Date
US1754427A true US1754427A (en) 1930-04-15

Family

ID=5935713

Family Applications (1)

Application Number Title Priority Date Filing Date
US94000A Expired - Lifetime US1754427A (en) 1925-03-12 1926-03-11 Process and apparatus for the manufacture of artificial threads of derivates of cellulose

Country Status (4)

Country Link
US (1) US1754427A (enEXAMPLES)
BE (1) BE332713A (enEXAMPLES)
FR (1) FR612658A (enEXAMPLES)
GB (1) GB249141A (enEXAMPLES)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3650645A (en) * 1968-10-25 1972-03-21 Teijin Ltd Spinning chimney

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3650645A (en) * 1968-10-25 1972-03-21 Teijin Ltd Spinning chimney

Also Published As

Publication number Publication date
FR612658A (fr) 1926-10-28
GB249141A (en) 1927-01-06
BE332713A (enEXAMPLES)

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