US2648095A - Apparatus for dry spinning artificial fibers - Google Patents

Apparatus for dry spinning artificial fibers Download PDF

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Publication number
US2648095A
US2648095A US279901A US27990152A US2648095A US 2648095 A US2648095 A US 2648095A US 279901 A US279901 A US 279901A US 27990152 A US27990152 A US 27990152A US 2648095 A US2648095 A US 2648095A
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US
United States
Prior art keywords
spinning
cell
trunk
cells
gases
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
US279901A
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English (en)
Inventor
Curtis Geoffrey
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.)
Akzo Nobel UK PLC
Original Assignee
Courtaulds PLC
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 Courtaulds PLC filed Critical Courtaulds PLC
Application granted granted Critical
Publication of US2648095A publication Critical patent/US2648095A/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

  • This invention relates to apparatus for dry spinning artificial fibres, for example of cellulose esters and ethers.
  • the object of the present invention is to provide an improved circulatory system for the heated gases which permits adequate solvent removal within short spinning cells.
  • apparatus for dry spinning artificial fibres comprises in combination a group of spinning cells, preferably each less than 24 inches in height and a circulatory system for the heated gases of the evaporative atmosphere which includes a common supply trunk and a common return trunk, at least half of the lower end of each spinning cell being suspended within the supply trunk and each spinning cell having a direct connection with the return trunk.
  • one or more heaters for the gases of the evaporative atmosphere are so arranged that a substantial part of the heated gases surrounding any one spinning cell has been circulated around not more than three other cells since leaving the heater.
  • the machine may have two parallel rows of spinning cells with a supply trunk for each row, a common return trunk and a central conduit above the return trunk containing heaters for the gas of the evaporative atmosphere, preferably so arranged that there is one heater for each set of four cells of each row.
  • the circulatory system includes provision for withdrawing part of the heated gases for recovery of the volatile solvent and replacing it with fresh gas.
  • Adjustable baflles for throttling the gases at each spinning cell may be fitted between the supply trunk and a compartment providing the connection between the cell and the return trunk. Such bafiles enable the cell temperatures to be adjusted individually. Holes may also be provided within the spinning cell so that some of the gases can pass direct from the supply trunk into the spinning cell. In this manner the temperature at the spinning jets may beraised without increasing the amount of air tapped off for solvent recovery purposes.
  • Figure 1 is a vertical section through the machine
  • FIG. 2 is a fragmentary section on the line 2-2 of Figure 1,
  • Figure 3 shows a variation in which adjustable bafiles are provided for throttling the air at the spinning cell
  • Figure 4 shows a further variation in which holes are provided in the spinning cell.
  • the machine shown in Figures 1 and 2 of the drawings has sixteen spinning cells I, the spinning solution being extruded through a jet 2; the thread so formed passes vertically downwards and is withdrawn from the cell through a slot in the door 3 for processing and collection in the usual manner.
  • the cells I are arranged in two rows of eight cells each and are divided by a conduit 4, housing two heaters 5.
  • the evaporative atmosphere is drawn by a fan 6 and divided into two streams; as shown in Figure 2 each gas stream passes over one of the heaters 5, and the heated gases are passed into supply trunks I to heat the cells I and are then passed by way of a common return trunk 8 back to the heaters 5.
  • a restriction I2 is provided in the supply trunk I and a. compartment I3 which provides the connection between the cell I and the return trunk 8.
  • Part of the heated gases is continuously tapped oil through pipes 9 leading from the cells I to a single pipe III connected to a solvent recovery plant (not shown), the gases so removed being made up by drawing in fresh gas through ports II.
  • Apparatus for dry spinning artificial fibres comprising in combination, a group of spinning cells each not greater than 24 inches in height,
  • a circulatory system for the heated gases of theevaporative atmosphere comprising at-least one heater for the gases, a supply trunk and a common return trunk for the heated gases, at least one half of each spinning cell, being positioned within the supply trunk and each spinning cell having a direct connection with the return trunk, means communicating within the spinning cells for withdrawing part of the heatedgases for sol,- vent recovery, and at, least one. port in the return trunk for drawing in fresh gases to replace the gases drawn off for solvent, recovery.
  • Apparatus for dry spinning artificial fibres comprising in combination, a group of spinning cells each not greater than 24 inchesin height and arranged in two parallelrows, a circulatory system for the heated gases of the evaporative atmosphere comprising a supply trunk for each row of cells, a. single common return trunk, a
  • central conduit above the return trunk leading into both supply trunks at least one heater in the conduit for heating the gases of the evapo rative atmosphere, at least one half of each spinning cell being positioned within a supply trunk and each spinning cell having a direct connection with the return trunk, means communicating with the spinning cells for withdrawing part of the heated gases for solvent recovery, and at least one port in the return trunk for drawing in fresh gasesrto replace the gases drawn off for solvent recovery.
  • Apparatus as claimed in claim 2 wherein holes are provided in the portion of the spinning cell within the supply trunk so that some of the gases can pass direct from the supply trunk into the spinning cell.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Artificial Filaments (AREA)
US279901A 1951-05-22 1952-04-01 Apparatus for dry spinning artificial fibers Expired - Lifetime US2648095A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB11895/51A GB705605A (en) 1951-05-22 1951-05-22 Improvements in and relating to apparatus for dry spinning artificial fibres

Publications (1)

Publication Number Publication Date
US2648095A true US2648095A (en) 1953-08-11

Family

ID=9994626

Family Applications (1)

Application Number Title Priority Date Filing Date
US279901A Expired - Lifetime US2648095A (en) 1951-05-22 1952-04-01 Apparatus for dry spinning artificial fibers

Country Status (6)

Country Link
US (1) US2648095A (xx)
BE (1) BE511526A (xx)
DE (1) DE947330C (xx)
ES (1) ES203610A1 (xx)
FR (1) FR1057270A (xx)
GB (1) GB705605A (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2867495A (en) * 1953-05-11 1959-01-06 Gen Electric Process for producing chlorotrifluoroethylene fibers
US3022539A (en) * 1959-12-17 1962-02-27 Du Pont Apparatus for distributing a fluid medium to a plurality of spinning chimneys

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100378258C (zh) * 2003-09-03 2008-04-02 中国石油化工股份有限公司 干法纺丝热风循环装置
GB2447696A (en) 2007-03-23 2008-09-24 Univ Exeter Photonic biosensor arrays

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2145290A (en) * 1933-08-14 1939-01-31 Celanese Corp Manufacture of artificial filaments and other products
US2351772A (en) * 1941-10-25 1944-06-20 American Viscose Corp Spinning machine
US2515393A (en) * 1945-03-01 1950-07-18 American Viscose Corp Dry spinning system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE443414C (de) * 1925-09-18 1927-04-30 Fabrication De La Soie Rhodias Verfahren zur Herstellung von Kunstfaeden aus Cellulosederivaten nach dem Trockenspinnverfahren
DE526535C (de) * 1928-03-18 1931-06-06 Aceta G M B H Verfahren zur Herstellung von Kunstfaeden nach dem Trockenspinnverfahren
DE594797C (de) * 1928-07-18 1934-03-22 Albert Boecler Trockenspinnzelle
DE542811C (de) * 1929-11-24 1932-01-28 Chatillon Soc An Italiana Per Verfahren und Vorrichtung zum Trockenspinnen von Kunstseidenfaeden
US2619676A (en) * 1946-06-04 1952-12-02 American Viscose Corp Method and apparatus for dry spinning filaments

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2145290A (en) * 1933-08-14 1939-01-31 Celanese Corp Manufacture of artificial filaments and other products
US2351772A (en) * 1941-10-25 1944-06-20 American Viscose Corp Spinning machine
US2515393A (en) * 1945-03-01 1950-07-18 American Viscose Corp Dry spinning system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2867495A (en) * 1953-05-11 1959-01-06 Gen Electric Process for producing chlorotrifluoroethylene fibers
US3022539A (en) * 1959-12-17 1962-02-27 Du Pont Apparatus for distributing a fluid medium to a plurality of spinning chimneys

Also Published As

Publication number Publication date
DE947330C (de) 1956-08-16
FR1057270A (fr) 1954-03-08
BE511526A (xx)
ES203610A1 (es) 1954-03-01
GB705605A (en) 1954-03-17

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