US2980493A - Method of operating a tow machine - Google Patents
Method of operating a tow machine Download PDFInfo
- Publication number
- US2980493A US2980493A US825464A US82546459A US2980493A US 2980493 A US2980493 A US 2980493A US 825464 A US825464 A US 825464A US 82546459 A US82546459 A US 82546459A US 2980493 A US2980493 A US 2980493A
- Authority
- US
- United States
- Prior art keywords
- spinnerets
- viscose
- tow
- flow
- filaments
- 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
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Images
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 spinneret which is the source of that bundle is removed from the spin bath and permitted to flush into a waste removal container during the time necessary to repair the broken or malfunctioning element.
- the spinnerets are mounted upon individual, swingably mounted rounders to permit their removal from the bath. The reason the viscose is allowed to continue to flow and be wasted is that the nature of viscose is such that if the flow is shut off there is great difiiculty in later restarting it and the total amount of material extruded through a single spinneret during a relatively short period necessary to correct the undesirable condition is not economically significant.
- spun yarn that is, yarn formed by twisting together staple fibers or relatively short length filaments
- staple fiber is viscose rayon or other man-made fiber
- the fibers are generally formed as continuous filaments, a number of which are gathered into a tow and then cut, broken or otherwise severed into desired fiber lengths.
- Machines for spinning tow differ from machines for spinning yarn in several respects
- the individual spinnerets normally contain a much larger number of orifices since all filaments issuing from a spinneret are not destined to form a yarn and for another, the filaments issuing from all spinnerets are brought together to form the tow as quickly as possible whereby many of the liquid aftertreatments and sometimes the stretching may be performed on the tow itself rather than on the individual bundles of filaments.
- the tow of a Patented Apr. 18, 1961 "ice.
- tow machine is much larger than the tows formed on yarn spinning machines.
- the cutting of the continuous filaments into staple is facilitated when the cutting is performed onthe large tow rather than on the smaller bundles.
- Tow or staple machines are notable for extremely large production as'compared with yarn spinning machines.
- This invention finds its greatest utility in connection with a tow machine and particularly with a tow machine wherein a large number of spinnerets are mounted in a single coupling. While such machines are intended for continuous operation, it nevertheless becomes desirable from time to time to stop the machine for limited periods of time which may be from one to three hoursmore or less. These stoppages may be necessitated-by the need for adjusting the cutter or for maintenance of the godets or for a number of other reasons. Since a single coupling containing many spinnerets necessarily has substam tial weight and size, special arrangements would have to be made if the coupling were to be removed from the spin bath during maintenance of the equipment, as is the case with the single spinnerets of a yarn spinning machine.
- the first step in the method of stopping and restarting the machine is to withdraw the spin bath or coagulating liquid from the trough to a point where the surface of the liquid is below the faces of the spinnerets.
- the viscose supply to the spinnerets is shut off.
- more or less of the viscose extruded after the removal of the bath and before the viscose flow is stopped will adhere to the outer faces of the spinnerets and since this will provide a thin layer or coating it will set up or harden rather quickly even at room temperature and unless removed the spinnerets with water, preferably cold water and preferably immediately after stopping the flow of viscose.
- the water may be applied under pressure and should be directed over not only the faces of the spinnerets but onto all exposed portions of the spinneret coupling and the outer cylindrical surfaces ,ofthe spinnerets so that no viscose is allowed to remain which may subsequently slough OE and contaminate the tow.
- Cold water is preferable because viscose can be hardened by heat alone and hot water would tend to cause the viscose within the spinnerets to solidify.
- the spin bath or coagulating liquid is introduced into the compartment in which the spinneret coupling is mounted until the desired depth of submersion is obtained and the flow of viscose is then resumed;
- the method of stopping and restarting the spinning operation comprising the following steps in the order named: withdrawing coagulating liquid from the assasss compartment to a point where the surface of the liquid is below the faces of the spinnerets,stopping the flow .of viscose through the-spinnerets, rinsing the faces of the spinnerets, introducing coagulating liquid into the compartment to submerge the spinnerets, and resuming the flow of viscose through the spinnerets.
- the method of stopping and restarting the spinning operation comprising the following steps in the order named: withdrawing coagulating liquid from the compartment to a point where the surface of the liquid is below the faces of the spinnerets, stopping the flow of viscose through the spinnerets, rinsing the faces of the spinnerets with cold water, introducing coagulating liquid into the compartment to submerge the spinnerets, and resuming theflow of viscose through the spinnerets.
- the method of stopping and restarting the spinning operation comprising the following steps in the order named: withdrawing coagulating liquid from the compartment to a point where the surface of the liquid is below the faces of the spinnerets, stopping the flow of viscose through the spinnerets, rinsing the faces of the spinnerets with cold water, coating the faces of the spinnerets with a surface tension reducing oil, introducing coagulating liquid into the compartment to submerge the spinnerets, and resuming the flow of viscose through the spinnerets.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Artificial Filaments (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Description
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US825464A US2980493A (en) | 1959-07-07 | 1959-07-07 | Method of operating a tow machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US825464A US2980493A (en) | 1959-07-07 | 1959-07-07 | Method of operating a tow machine |
Publications (1)
Publication Number | Publication Date |
---|---|
US2980493A true US2980493A (en) | 1961-04-18 |
Family
ID=25244059
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US825464A Expired - Lifetime US2980493A (en) | 1959-07-07 | 1959-07-07 | Method of operating a tow machine |
Country Status (1)
Country | Link |
---|---|
US (1) | US2980493A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3488412A (en) * | 1966-04-22 | 1970-01-06 | Eckert & Ziegler Gmbh | Method of purging thermosetting materials from an injection molding machine |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1818549A (en) * | 1929-03-21 | 1931-08-11 | Thames Silk Company | Apparatus and method for spinning fibers in precipitating baths |
US2492451A (en) * | 1945-01-03 | 1949-12-27 | American Viscose Corp | Spinneret for the production of viscose filaments |
US2536093A (en) * | 1947-05-28 | 1951-01-02 | American Viscose Corp | Method for spinning artificial filaments |
US2879542A (en) * | 1953-03-25 | 1959-03-31 | American Viscose Corp | Spinning bath circulator |
-
1959
- 1959-07-07 US US825464A patent/US2980493A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1818549A (en) * | 1929-03-21 | 1931-08-11 | Thames Silk Company | Apparatus and method for spinning fibers in precipitating baths |
US2492451A (en) * | 1945-01-03 | 1949-12-27 | American Viscose Corp | Spinneret for the production of viscose filaments |
US2536093A (en) * | 1947-05-28 | 1951-01-02 | American Viscose Corp | Method for spinning artificial filaments |
US2879542A (en) * | 1953-03-25 | 1959-03-31 | American Viscose Corp | Spinning bath circulator |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3488412A (en) * | 1966-04-22 | 1970-01-06 | Eckert & Ziegler Gmbh | Method of purging thermosetting materials from an injection molding machine |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: PROVIDENT ALLIANCE LIFE INSURANCE COMPANY C/O THE Free format text: AS SECURITY FOR INDEBTEDNESS RECITED ASSIGNOR GRANTS , BARGAINS, MORTGAGES, PLEDGES, SELLS AND CREATES A SECURITY INTEREST WITH A LIEN UNDER SAID PATENTS, SUBJECT TO CONDITIONS RECITED.;ASSIGNOR:AVTEX FIBERS INC. A NY CORP.;REEL/FRAME:003959/0219 Effective date: 19810301 Owner name: JOHN HANCOCK MUTUAL LIFE INSURANCE COMPANY JOHN HA Free format text: AS SECURITY FOR INDEBTEDNESS RECITED ASSIGNOR GRANTS , BARGAINS, MORTGAGES, PLEDGES, SELLS AND CREATES A SECURITY INTEREST WITH A LIEN UNDER SAID PATENTS, SUBJECT TO CONDITIONS RECITED.;ASSIGNOR:AVTEX FIBERS INC. A NY CORP.;REEL/FRAME:003959/0219 Effective date: 19810301 Owner name: KELLOGG CREDIT CORPORATION A DE CORP. Free format text: AGREEMENT WHEREBY SAID HELLER AND RAYONIER RELEASES ALL MORTGAGES AND SECURITY INTERESTS HELD BY AVTEX ON APRIL 28, 1978, AND JAN. 11, 1979, RESPECTIVELY AND ASSIGNS ITS ENTIRE INTEREST IN SAID MORT-AGAGE AGREEMENT TO ASSIGNEE;ASSIGNORS:WALTER E. HELLER & COMPANY, INC. A NY CORP.;ITT RAYONIER INCORPORATED, A DE CORP.;AVTEX FIBERS INC., A NY CORP.;REEL/FRAME:003959/0350 Effective date: 19800326 Owner name: WESTERN AND SOUTHERN LIFE INSURANCE COMPANY THE C/ Free format text: AS SECURITY FOR INDEBTEDNESS RECITED ASSIGNOR GRANTS , BARGAINS, MORTGAGES, PLEDGES, SELLS AND CREATES A SECURITY INTEREST WITH A LIEN UNDER SAID PATENTS, SUBJECT TO CONDITIONS RECITED.;ASSIGNOR:AVTEX FIBERS INC. A NY CORP.;REEL/FRAME:003959/0219 Effective date: 19810301 Owner name: BALBOA INSURANCE COMPANY C/O THE PAUL REVERE EQUIT Free format text: AS SECURITY FOR INDEBTEDNESS RECITED ASSIGNOR GRANTS , BARGAINS, MORTGAGES, PLEDGES, SELLS AND CREATES A SECURITY INTEREST WITH A LIEN UNDER SAID PATENTS, SUBJECT TO CONDITIONS RECITED.;ASSIGNOR:AVTEX FIBERS INC. A NY CORP.;REEL/FRAME:003959/0219 Effective date: 19810301 Owner name: NEW ENGLAND MUTUAL LIFE INSURANCE COMPANY 501 BOYL Free format text: AS SECURITY FOR INDEBTEDNESS RECITED ASSIGNOR GRANTS , BARGAINS, MORTGAGES, PLEDGES, SELLS AND CREATES A SECURITY INTEREST WITH A LIEN UNDER SAID PATENTS, SUBJECT TO CONDITIONS RECITED.;ASSIGNOR:AVTEX FIBERS INC. A NY CORP.;REEL/FRAME:003959/0219 Effective date: 19810301 Owner name: PAUL REVERE LIFE INSURANCE COMPANY THE C/O THE PAU Free format text: AS SECURITY FOR INDEBTEDNESS RECITED ASSIGNOR GRANTS , BARGAINS, MORTGAGES, PLEDGES, SELLS AND CREATES A SECURITY INTEREST WITH A LIEN UNDER SAID PATENTS, SUBJECT TO CONDITIONS RECITED.;ASSIGNOR:AVTEX FIBERS INC. A NY CORP.;REEL/FRAME:003959/0219 Effective date: 19810301 Owner name: WALTER E. HELLER & COMPANY, INC., A CORP. OF DEL. Free format text: AGREEMENT WHEREBY AETNA RELEASES AVTEX FROM ALL MORTAGES AND SECURITY INTERESTS IN SAID INVENTIONS AS OF JANUARY 11,1979, AND ASSIGNS TO ASSIGNEE THE ENTIRE INTEREST IN SAID MORTAGE AGREEMENT TO ASSIGNEE;ASSIGNORS:AETNA BUSINESS CREDIT, INC., A CORP. OF N.Y.;AVTEX FIBERS, INC, A CORP. OF NY;KELLOGG CREDIT CORP., A CORP. OF DEL.;REEL/FRAME:003959/0250 Effective date: 19800326 |