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US2799895A - Spinning apparatus - Google Patents

Spinning apparatus Download PDF

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Publication number
US2799895A
US2799895A US320219A US32021952A US2799895A US 2799895 A US2799895 A US 2799895A US 320219 A US320219 A US 320219A US 32021952 A US32021952 A US 32021952A US 2799895 A US2799895 A US 2799895A
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US
United States
Prior art keywords
filament
spinning
viscose
spinneret
bath
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
US320219A
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English (en)
Inventor
Elssner Richard
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.)
Akzona Inc
Original Assignee
American Enka 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 American Enka Corp filed Critical American Enka Corp
Application granted granted Critical
Publication of US2799895A publication Critical patent/US2799895A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D01D5/06—Wet spinning methods

Definitions

  • the present invention relates to a process and apparatus for spinning viscose, and more particularly to a process and apparatus which achieves the spinning of viscose in such manner that there is no formation of tensioned areas on the viscose filament, which tensioned areas generally cause weakening and breaking of the filament.
  • the process of the present invention mainly comprises withdrawing a filament of viscose from a viscose spinning bath containing sulfuric acid onto a moving transporting band, preferably of some flexible material such as rubber, so as to draw the filament from said bath while simultaneously allowing excess sulfuric acid on the filament to run off and drain down on the transporting band, thereby avoiding the formation of any tensioned portions on the filameut due to weighting of the same by excess acid adhering thereto; and recovering a tension-free viscose filament.
  • the filament is preferably drawn off onto the transporting band moving, with the transporting band at an acute angle to the horizontal liquid level of the spinning bath.
  • This acute angle which is designated as a on the accompanying drawing, allows for the excess sulfuric acid adhering to the filament to easily drain back into the bath not only along the filament itself but also along the transporting band.
  • the transporting band provides a drain along which the excess liquid acid flows so that the same is homogeneously removed from the filament.
  • the apparatus of the present invention comprises a container adapted to hold a viscose spinning bath, which for example, may contain a high percentage of sulfuric acid, a spinneret located in said container and adapted to eject from the spinning bath a substantially continuous filament of viscose, and a movable transporting band, preferably of some flexible material such as rubber, adapted to receive a filament of viscose upon ejection by said spinneret from the spinning bath and transport the same while allowing excess liquid on the filament to run off onto said band so as to avoid any tensioned areas forming on said filament and possible resultant breaking of said filament upon stretching due to the weight of excess liquid adhering to the filament.
  • a viscose spinning bath which for example, may contain a high percentage of sulfuric acid
  • a spinneret located in said container and adapted to eject from the spinning bath a substantially continuous filament of viscose
  • a movable transporting band preferably of some flexible material such as rubber
  • the transporting band which may be located above the container or even directly over the same, preferably forms an acute angle with the horizontal level of liquid in the spinning bath.
  • the lower end of the transporting band is preferably located very close to the container so that the viscose filament travels only a very short distance before contacting the transporting band.
  • the freshly spun filament 1 ejected from the spinneret is taken up on the continuous belt 2, shortly after leaving the level of the bath, indicated by the dash-line.
  • the continuous belt 2 is located on the pulleys 3 and 4.
  • the pulley 4 is so located with reference to pulley 3 that an acute angle is formed between the belt 2 and the horizontal liquid level in the container.
  • the arrangement according to the present invention provides for a degree change in direction of the filament 1 as it leaves the spinning bath and is taken up by the belt 2.
  • the viscose was prepared in the conventional manner from a refined cellulose, the alkali cellulose being subjected to a short ageing process only.
  • the viscose had a cellulose content of 6.5 percent and a NaOH content of 8.0 percent.
  • the precipitating bath contained from 900 to 980 grams of H2804- per liter, the temperature being of 20
  • the spinneret used had 1400 holes with a diameter of 60 microns each. 67 grams of viscose per minute were forced through the spinneret by means of a conventional viscose ptunp.
  • the band 2 moved along with a speed of 125 metres per minute.-
  • the spinneret had been located at a level of 12 mm. below the surface of the precipitating bath.
  • the distance for the filaments from the spinneret to the egress of the freshly formed thread from the precipitating bath was of 285 mm.
  • the angle of deflection for the thread at the roller 3 was of 80.
  • the axis o'f the roller 4 was spaced by 160 mm. from the axis of the roller 3.
  • the angle a between the surface of the precipitating bath and the extension of the track band 2 wasof 40. i a
  • a spinning arrangement comprising, in combination, spinneret means for emitting a continuous filament from a spinningbath; conveyor means for receiving a filament from said spinneret means and for conveying the filament along a given path while liquid drains from the filament, said conveyor means extending in an upward direction for conveying the filament upwardly and having 'a bottom end spaced from said spinneret means, in the direction of filament travel from said spinneret means to said conveyor means, and located at a slightly higher elevation than said spinneret means so that the filament moves in a substantially horizontal direction to said conveyor means .from a spinning bath having a level higher than said ,spinneret means and lower than said bottom end of said "conveyor means, said conveyor meansbeing substantially normal to the direction of filament travel and having a top end located nearer to a vertical plane passing through said spinneret means than said bottom end of said conveyor means so that the filament movesnearer to said plane as it is conveyed
  • a spinning arrangement comprising, in combination, spinneret means for emitting a continuous filament from a spinning bath; conveyor means for receiving a filament from said spinneret means and for conveying the filament along a given path while liquid drains from the filament, said conveyor means extending in an upward direction for conveying the filament upwardly and having a bottom end spaced from said spinneret means, in thedirection of filament travel from said spinneret means to said conveyor means, and located at a slightly higher elevation than said spinneret means so that the filament moves in a substantially horizontal direction to said conveyor means from a spinning bath having a level higher than said spinneret means and lower than said bottom end a of said conveyor means, said conveyor means having a top end located nearer to a vertical plane passing through said spinneret means and being substantially normal to the direction of filament travel than said bottom end of said conveyor means so that the filament moves nearer I to said plane as it is conveyed upwardly by said conveyor means; and a roller located between said plane and said conveyor means for guiding the filament
  • a spinning arrangement comprising, in combination, a pair of pulleys one of which is located at a higher elevation than the other and nearer to a given vertical plane; an endless band extending about said pulleys to be moved when said pulleys turn; spinneret means located in said given plane at a-slightly lower elevation than said other pulley for directing a filament from a spinning bath to said band at a part thereof engaging said other pulley, so that the filament moves from a spinning bath whose level is lower than said other pulley and higher than said spinneret means along a substantially horizontal path to engage and be moved upwardly by said band.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Artificial Filaments (AREA)
US320219A 1951-11-17 1952-11-13 Spinning apparatus Expired - Lifetime US2799895A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE308529X 1951-11-17

Publications (1)

Publication Number Publication Date
US2799895A true US2799895A (en) 1957-07-23

Family

ID=6121713

Family Applications (1)

Application Number Title Priority Date Filing Date
US320219A Expired - Lifetime US2799895A (en) 1951-11-17 1952-11-13 Spinning apparatus

Country Status (4)

Country Link
US (1) US2799895A (fi)
BE (1) BE515565A (fi)
CH (1) CH308529A (fi)
FR (1) FR1066569A (fi)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3114590A (en) * 1957-10-23 1963-12-17 Wyandotte Chemicals Corp Production of solid caustic

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US957460A (en) * 1908-05-07 1910-05-10 Emil Elsaesser Machine for spinning viscous liquids.
US1022097A (en) * 1909-12-01 1912-04-02 Carl Rudolph Linkmeyer Process of manufacturing fine artificial threads.
US1153004A (en) * 1912-03-21 1915-09-07 Charles Scott Althouse Process of treating thread.
FR739071A (fr) * 1932-06-25 1933-01-05 Textiles Synthetiques Sa Des Produits textiles ainsi que les procédés et appareils pour leur fabrication
DE636811C (de) * 1933-11-14 1936-10-15 Feldmuehle A G Vorm Loeb Vorrichtung zur Herstellung von flachen, ungefalteten Baendchen auf Kunstseidespinnmaschinen
US2403437A (en) * 1939-02-25 1946-07-09 Asher Blum Process for making artificial wool imitation filaments and artificial wool filaments
US2467541A (en) * 1943-07-03 1949-04-19 American Viscose Corp Method and apparatus for spinning artificial filamentous products
US2536093A (en) * 1947-05-28 1951-01-02 American Viscose Corp Method for spinning artificial filaments

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US957460A (en) * 1908-05-07 1910-05-10 Emil Elsaesser Machine for spinning viscous liquids.
US1022097A (en) * 1909-12-01 1912-04-02 Carl Rudolph Linkmeyer Process of manufacturing fine artificial threads.
US1153004A (en) * 1912-03-21 1915-09-07 Charles Scott Althouse Process of treating thread.
FR739071A (fr) * 1932-06-25 1933-01-05 Textiles Synthetiques Sa Des Produits textiles ainsi que les procédés et appareils pour leur fabrication
DE636811C (de) * 1933-11-14 1936-10-15 Feldmuehle A G Vorm Loeb Vorrichtung zur Herstellung von flachen, ungefalteten Baendchen auf Kunstseidespinnmaschinen
US2403437A (en) * 1939-02-25 1946-07-09 Asher Blum Process for making artificial wool imitation filaments and artificial wool filaments
US2467541A (en) * 1943-07-03 1949-04-19 American Viscose Corp Method and apparatus for spinning artificial filamentous products
US2536093A (en) * 1947-05-28 1951-01-02 American Viscose Corp Method for spinning artificial filaments

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3114590A (en) * 1957-10-23 1963-12-17 Wyandotte Chemicals Corp Production of solid caustic

Also Published As

Publication number Publication date
CH308529A (de) 1955-07-31
FR1066569A (fr) 1954-06-08
BE515565A (fi)

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