US2720443A - Method and apparatus for treating a tow of filaments or threads in a limited space - Google Patents

Method and apparatus for treating a tow of filaments or threads in a limited space Download PDF

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Publication number
US2720443A
US2720443A US210470A US21047051A US2720443A US 2720443 A US2720443 A US 2720443A US 210470 A US210470 A US 210470A US 21047051 A US21047051 A US 21047051A US 2720443 A US2720443 A US 2720443A
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United States
Prior art keywords
tow
treating
liquid
chamber
tube
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Expired - Lifetime
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US210470A
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English (en)
Inventor
James F Keggin
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Imperial Chemical Industries Ltd
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Imperial Chemical Industries Ltd
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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
    • D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
    • D01D10/04—Supporting filaments or the like during their treatment
    • D01D10/0436—Supporting filaments or the like during their treatment while in continuous movement
    • D01D10/0481—Supporting filaments or the like during their treatment while in continuous movement the filaments passing through a tube

Definitions

  • the present invention relates to a method of treating a tow of filaments or threads in a limited space and is particularly concerned with a method of treating in nontensioned condition a continuous tow of artificial filamentary products with a treating liquid having a specific gravity less than the specific gravity of the tow.
  • the object of the present invention is to provide a method of treating. in a non-tensioned condition a continuous tow of filamentary products with a treating liquid having a specific gravity less than the specific gravity of the tow which will ensure intimate contact between the individual filaments of a tow and the treating liquid.
  • the method of treating in a non-tensioned condition a continuous tow of filamentary products with a treating liquid having a specific gravity less than the specific gravity of the tow comprises introducing a current of the treating liquid and the tow into the inlet end of a tubular structure portion having its lower surface inclined downwards in the direction of flow of said liquid and arranging that the speed of the treating liquid and the inclination downwards of said lower surface are such. that the desired quantity of tow collects on said lower surface and that the portion of the tow withdrawn from out of the treating liquid at the exit end of the tubular structure has remained inthe treating liquid for the desired period of time.
  • the tubular structure portion having its lower surface inclined downwards can preferably be one arm of a U tube, the other arm of the U tube serving as the exit end for the tow and the current of treating liquid.
  • the tubular structure portion having its lower surface inclined downwards can be positioned in a trough so that the treating liquid will collect and fill the. trough to the height desired as it leaves the lower end of the tubular structure portion.
  • the tow is introduced into the said tubular structure portion by means of a current of said treating liquid passing through another tubular structure 2,720,443 Patented Oct. 11, 1955 portion of narrower width and leading to said tubular structure portion.
  • the said tubular structure portion of narrower width ends in a portion of progressively increasing width as it enters the aforesaid tubular structure portion havings its lower surface inclined downwards.
  • the treating liquid and the tow pass through the narrower bore of the tubular structure of narrower diameter at relatively high speed.
  • the speed of the liquid here which is controlled by the head or difference in level of the liquid at the entrance to the narrower tube and the overflow of the liquid after having left the exit of the tubular structure portion having its lower surface inclined downwards or alternatively the pumping pressure, must be at least as great as that of the tow at this point.
  • the tow folds irregularly as the velocity of the liquid drops and forms a loose column of fibre which moves slowly down the tube on the lower surface.
  • the speed of travel in this tubular structure portion is controlled to some extent by the speed of liquid flow in the tube which depends on the relative bores of this tube and the narrower tube and the initial speed of the tow and also on the inclination downwards of the wider tube, for the fibre being more dense than the liquid tends to slide down the tube. It is the time of treatment of the fibre, which is the time taken to traverse the narrower and wider tubes which depends on the above factors controlling the speed of travel and also on the length of the wider tube, or more accurately on the length of the column or folded fibre allowed to accumulate in the wider tube before being withdrawn. For a tow of given size and rate of delivery the speed of liquid in the narrower tube, i. e. the head is adjusted to be somewhat greater than the tow speed.
  • the bore size of the narrower tube is a matter of convenience.
  • the size of the wider tube is determined by the required time of treatment. It is possible to vary this time within very wide limits in the same apparatus as the fibre may be drawn through both tubes with very little accumulation in a fraction of a minute, or may be allowed to accumulate in a long column the length of which is determined by the length of the wider tube, so that the time of passage may take many minutes.
  • the lower surface of the first mentioned tubular structure portion is inclined at an angle lying between 5 and 45 to the horizontal.
  • the tubular structure portion having the narrower bore preferably ends with a portion of progressively increasing width, approaching or equal to the width of the first mentioned tubular structure portion having the wider width, in order to prevent excessive turbulence of the liquid flow and a possible entangling of the filaments forming the tow as it sinks in the treating liquid on entering the first mentioned tubular structure portion having the wider width.
  • Apparatus for treating in accordance with the preferred method of the invention in a non-tensioned condition a continuous tow of filamentary products with a treating liquid having a specific gravity less than the specific gravity of the tow comprises in combination a constant level feed cone, a tubular structure portion leading to a tubular structure portion substantially wider than the narrowest part of the aforementioned tubular structure, wherein the lower surface of the wider tubular structure is of desired length and of desired inclination and particularly advantageous for treating continuous travelling tows of artifical filamentary products of protein with concentrated saline solutions of the kind which are of lower specific gravity than said tows.
  • the drawing is a diagrammatic front elevation of apparatus suitable for carrying out the method of the invention.
  • Example A matured caustic soda solution of groundnut globulin prepared from a solution containing 20 parts peanut globulin, 1.25 parts sodium hydroxide, 1.0 part of sodium sulphite and 77.75 parts water is extruded into the coagulating bath containing 200 gm./l. sodium sulphate and 20 gm./l. sulphuric acid.
  • the resulting tow 1 of 15,000 filaments each of 3 to 4 denier is taken up on godet 2 having a peripheral speed of 30 metres per minute and passes to godet 3 having the same peripheral speed.
  • the tow 1 then travels vertically downwards into the constant level feed cone 4 where it is picked up by a relaxing solution which enters the feed cone through a pipe 5 and is then carried through the tube 6 and the glass cone 7 into the inclined tube 8 which is one arm of a U tube, the other arm being 9.
  • the tube 6 is of 4 inch diameter and the glass cone 7 is 4 inches in diameter at the open end.
  • the composition of the relaxing solution is 250 gms. of sodium sulphate per litre of solution and it enters and leaves the tube 8 at 20 C.
  • the speed of the liquid flow through tube 6 is controlled by the difference in levels of the liquid at the inlet cone 4 and the overflow at the exit end of the tube 9 which in this case is 4 inches.
  • the U tube 8, 9 is of glass 6 inches in diameter and the inclined tube 8 is 6 feet long and is inclined sothat the lowest portion of this tube is 14 inches below the inlet end.
  • the speed of the tow at the feed cone 4 is 30 meters per minute.
  • the tow forms a loose column about 4 feet long against the lower surface of the tube 8 filling roughly about A of the cross-sectional area and is then removed at the exit end of the tube 9 by a godet 10.
  • the peripheral speed of this godet is adjusted to 19 metres per minute so that the passage through the tube 8 is constant and about 3 minutes which is sufficient to relax the protein filaments.
  • the filaments thus relaxed are then treated in known manner so as to elfect their insolubilisation, that is to say, so as to make these filaments resistant to treatment for 90 minutes at 97 in a testing bath containing 0.1% sulphuric acid and 0.25% sodium sulphate.
  • a method of treating in a non-tensioned condition without tangling a continuous tow of artificial protein filaments which comprises introducing a tow of said filaments into the upper end of a longitudinally confined downwardly inclined treating zone of relatively small crosssectional area, propelling said tow with a current of treating and carrying liquid having a specific gravity less than the specific gravity of said tow through said first treating zone downwardly from the upper end thereof, said liquid completely filling said zone, moving said liquid together with the tow therein out of said first treating zone and directly therefrom into the upper end of a second longitudinally confined downwardly inclined treating zone of relatively large cross-sectional area in comparison with said first zone, said liquid completely filling said second zone, carrying said tow through said second zone by moving said liquid in a non-turbulent condition through said second treating zone and Withdrawing said tow from the lower end of said second treating zone.
  • Apparatus for treating in a non-tensioned condition without tangling a continuous tow of artificial protein filaments with a treating liquid having a specific gravity less than the specific gravity of said tow comprising a first downwardly directed elongated narrow tubular member, means for continuously supplying treating liquid'and said tow to an upper portion of said first tubular member, a second downwardly inclined elongated tubular member of substantially greater cross-sectional area than the narrowest part of said first tubular member, the lower end of said first tubular member communicating.
  • said means to axially confine the-lower end of said second tubular member is a third upwardly inclined tubular member, the lower end of which communicates with the lower end of said second tubular member, said head of liquid being maintained by providing said third tubular member with an outlet for liquid positioned below the portion of said first tubular member where said treating liquid is supplied.
  • Apparatus as recited in claim 7 in which said means for supplying treating liquid to an upper portion of said first tubular member includes means for maintaining a constant liquid level in said first tubular member.
  • Apparatus for treating in a non-tensioned condition without tangling a continuous tow of artificial protein filament which'comprises a substantially U-shaped tubular treating chamber, said chamber having a mouth portion at the upper end of one leg thereof, means for delivering a filament tow to said mouth portion for passage from said mouth portion through said U-shaped chamber, means for delivering a treating liquid to said mouth portion, the leg of said U-shaped chamber having said mouth portion at the upper end thereof being of relatively small cross-sectional area from the point of entrance of said tow to the lower base portion of said chamber at which point the base portion of said chamber becomes of increased cross-sectional area, said base portion being inclined downwardly away from said first named leg, means for withdrawing said tow from the other legof said U-shaped chamber, said other leg having liquid discharge means positioned below the level of said mouth portion.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)
US210470A 1950-03-21 1951-02-12 Method and apparatus for treating a tow of filaments or threads in a limited space Expired - Lifetime US2720443A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB292355X 1950-03-21

Publications (1)

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US2720443A true US2720443A (en) 1955-10-11

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US210470A Expired - Lifetime US2720443A (en) 1950-03-21 1951-02-12 Method and apparatus for treating a tow of filaments or threads in a limited space

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US (1) US2720443A (US20020095090A1-20020718-M00002.png)
BE (1) BE502053A (US20020095090A1-20020718-M00002.png)
CH (1) CH292355A (US20020095090A1-20020718-M00002.png)
FR (1) FR1049278A (US20020095090A1-20020718-M00002.png)
GB (1) GB697957A (US20020095090A1-20020718-M00002.png)
NL (1) NL74101C (US20020095090A1-20020718-M00002.png)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2947595A (en) * 1955-01-24 1960-08-02 Celanese Corp Treatment of filamentary materials
US3058327A (en) * 1956-02-03 1962-10-16 Benninger Ag Maschf Apparatus for treating ribbon and ropeshaped goods with a treating fluid
US3267704A (en) * 1963-02-13 1966-08-23 Cilander Ag Apparatus for the continuous wet processing of textile material
US3364705A (en) * 1964-09-18 1968-01-23 British Cotton & Wool Dyers As Apparatus for treating textile materials
US4261188A (en) * 1975-05-15 1981-04-14 Kroy Unshrinkable Wools Limited Material immersion apparatus
US4392365A (en) * 1978-10-18 1983-07-12 Hisaka Works, Ltd. Apparatus for treating textile material for continuous length

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1029866A (en) * 1912-02-17 1912-06-18 Walter F Haskell Warp-dyeing machine.
US1153004A (en) * 1912-03-21 1915-09-07 Charles Scott Althouse Process of treating thread.
US1702535A (en) * 1928-02-20 1929-02-19 Sr Charles P Cole Apparatus and method for treating fabrics with liquid
DE504995C (de) * 1927-02-01 1930-08-13 Freiberger M In einem Bottich stehender und mit ihm kommunizierender J-foermiger Behandlungsbehaelter
US1778380A (en) * 1928-08-02 1930-10-14 William L Conrad Processing apparatus
US1825478A (en) * 1926-04-12 1931-09-29 Butterworth H W & Sons Co Method and means for treating textile fabrics
US2131409A (en) * 1936-04-09 1938-09-27 Chatillon Italiana Fibre Washing, desulphurizing, bleaching, finishing, and like treatments of artificial yarns
US2149708A (en) * 1936-02-13 1939-03-07 Ig Farbenindustrie Ag Treatment of bundles of artificial fibers
US2203678A (en) * 1937-04-01 1940-06-11 Dursteler Wilhelm Method and apparatus for the continuous wet treatment of webs of textile material
US2313006A (en) * 1937-02-15 1943-03-02 Ufnowski Waclaw Apparatus for recovering carbon bisulphide and sulphurated hydrogen during the finishing process of the manufacture of viscose staple fiber
US2377434A (en) * 1941-05-15 1945-06-05 Celanese Corp Textile material
US2383358A (en) * 1943-01-25 1945-08-21 Courtaulds Ltd Treatment of casein or the like protein fibers
US2555065A (en) * 1947-03-10 1951-05-29 Ici Ltd Method of treating a tow of filaments or threads

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1029866A (en) * 1912-02-17 1912-06-18 Walter F Haskell Warp-dyeing machine.
US1153004A (en) * 1912-03-21 1915-09-07 Charles Scott Althouse Process of treating thread.
US1825478A (en) * 1926-04-12 1931-09-29 Butterworth H W & Sons Co Method and means for treating textile fabrics
DE504995C (de) * 1927-02-01 1930-08-13 Freiberger M In einem Bottich stehender und mit ihm kommunizierender J-foermiger Behandlungsbehaelter
US1702535A (en) * 1928-02-20 1929-02-19 Sr Charles P Cole Apparatus and method for treating fabrics with liquid
US1778380A (en) * 1928-08-02 1930-10-14 William L Conrad Processing apparatus
US2149708A (en) * 1936-02-13 1939-03-07 Ig Farbenindustrie Ag Treatment of bundles of artificial fibers
US2131409A (en) * 1936-04-09 1938-09-27 Chatillon Italiana Fibre Washing, desulphurizing, bleaching, finishing, and like treatments of artificial yarns
US2313006A (en) * 1937-02-15 1943-03-02 Ufnowski Waclaw Apparatus for recovering carbon bisulphide and sulphurated hydrogen during the finishing process of the manufacture of viscose staple fiber
US2203678A (en) * 1937-04-01 1940-06-11 Dursteler Wilhelm Method and apparatus for the continuous wet treatment of webs of textile material
US2377434A (en) * 1941-05-15 1945-06-05 Celanese Corp Textile material
US2383358A (en) * 1943-01-25 1945-08-21 Courtaulds Ltd Treatment of casein or the like protein fibers
US2555065A (en) * 1947-03-10 1951-05-29 Ici Ltd Method of treating a tow of filaments or threads

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2947595A (en) * 1955-01-24 1960-08-02 Celanese Corp Treatment of filamentary materials
US3058327A (en) * 1956-02-03 1962-10-16 Benninger Ag Maschf Apparatus for treating ribbon and ropeshaped goods with a treating fluid
US3267704A (en) * 1963-02-13 1966-08-23 Cilander Ag Apparatus for the continuous wet processing of textile material
US3364705A (en) * 1964-09-18 1968-01-23 British Cotton & Wool Dyers As Apparatus for treating textile materials
US4261188A (en) * 1975-05-15 1981-04-14 Kroy Unshrinkable Wools Limited Material immersion apparatus
US4392365A (en) * 1978-10-18 1983-07-12 Hisaka Works, Ltd. Apparatus for treating textile material for continuous length

Also Published As

Publication number Publication date
GB697957A (en) 1953-10-07
FR1049278A (fr) 1953-12-29
NL74101C (US20020095090A1-20020718-M00002.png)
BE502053A (US20020095090A1-20020718-M00002.png)
CH292355A (de) 1953-08-15

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