US2657433A - Continuous processing of filamentary tow - Google Patents
Continuous processing of filamentary tow Download PDFInfo
- Publication number
- US2657433A US2657433A US253706A US25370651A US2657433A US 2657433 A US2657433 A US 2657433A US 253706 A US253706 A US 253706A US 25370651 A US25370651 A US 25370651A US 2657433 A US2657433 A US 2657433A
- Authority
- US
- United States
- Prior art keywords
- tow
- tube
- pipes
- filaments
- group
- 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
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/18—Separating or spreading
Definitions
- This invention relates to the continuous processing of filamentary tow and more particularly to spreading a compact tow of substantially parallel continuous filaments into a flat band of substantially uniform thickness.
- filaments from a number of multi-hole jets are usually led together to form a thick tow havin a denier which is at least 50,000 and which may be as high as 1,000,000.
- the resultant tow is subjected to a number of wet treatments such as desulphurising, washing and bleaching, followed by drying, for example on a series of heated rollers.
- the tow is usually mangled by passage through the nip of a pair of squeeze rollers to remove surplus treatment liquid.
- the tow passing from the squeeze rollers is therefore generally in the form of a compact mass which is difficult to dry uniformly and quickly on the heated drying rollers because the tow has a small ratio of surface area to unit volume and th heat does not readily reach the central filaments.
- the object of the present invention is to facilitate uniform and efiicient drying of the filamentary tow.
- a method of spreading a compact tow of substantially parallel continuous filaments into a flat band of substantially uniform thickness comprises passing the tow over and in close proximity to a fiat or substantially flat surface and directing a series of oblique air jets on to the moving tow, the jets collectively having'components of velocity both in and transversely to the direction of movement of the tow, so that the air passing through the tow spreads the filaments and is immediately defiected back through the tow by the fiat surface.
- the surface may be entirely fiat or may be provided with spaced transverse ribs which assist in deflecting the air.
- the tow is passed'd through a tube having a fiat internal surface on to which jets of air are obliquely directed in the direction of movement of the tow,
- the number of air jet is preferably increased in the direction of travel of the tow. Reciprocating air jets may also be used.
- Theprocess of the present invention is useful for spreading a wet tow preparatory to drying on heated rollers but it can be applied to other processes in which it is required to spread a com- 3 Claims. (Cl. 19-.48)
- a tow I of wet rayon filaments which has passed through a series of liquid treatments and then through the nip of a pair of rollers (not shown) to remove excess liquid, is passed into a flat tube 2 having a narrow converging entrance channel 3 and a. diverging and appreciably longer chamiel 4 where the spreading of the tow takes place.
- the upper and lower inner surfaces 5, 6 of the tube are substantially flat and a total of fifteen pipes I, carrying compressed air supplied from a pipe 8 and a distribution chamber 9 mounted above the tube 2 at its narrow end, pass obliquely downwards to open into the tube 2 on its upper, inner surface 5.
- the pipes 'l are mounted in three groups containing three, five, and seven pipes respectively, the group containing the three pipes la being arranged near the entrance end, the group containing the seven pipes 'lc being arranged near the exit end and the group of five pipes lb being between the other two groups.
- Each group of pipes is also splayed between the chamber 9 andthe tube 2 so that the centre pipe of each group is in line with the longitudinal axis of the tube 2 whilst the other pipes form an increasing angle with the longitudinal axis (in plan view) as they are positioned away from the centre of each group.
- the partially spread tow then passes'under the air jets from the second group of five pipes lb where further spreading takes place and finally, after passing under the jets of air from the third group of seven pipes 1c, the tow is spread into a flat band of filaments l0 having a substantially uniform thickness.
- the tow may be passed through a further spreading tube as .1 described above, before passing on to the second part of the dryer.
- Apparatus for spreading a compact wet tow of substantiallyparallel continuou filaments into a flat band of substantially uniform thickness comprising a substantially flat tube having a narrow converging entrance channel and a divergent exit channel substantially longer than the entrance channel and substantially wider :at -the exit end than the width of the entrance channel, for receiving a tow of wet filaments, said tube having substantially flat upp r and lower inner surfaces, and a compressed air supply source above said fiat tube, in combination with a series of group-s of pipes connecting zthexcompressed air source to said fiat tube, the groups being-spaced from each other lengthwise of the exit channel, and the pipes in each group being spaced from each other widthwise of said channel, and each of said groups of pipesmeeting the fiat tube at an acute angle whereby compressed air .from the compressed air source passes downwardly through said groups of pipes'in a direction which isbo'th transverse to and in line with the movement of the tow through said flat tube, and whereby the air from the pipes
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Drying Of Solid Materials (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Treatment Of Fiber Materials (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB27758/50A GB695384A (en) | 1950-11-14 | 1950-11-14 | Improvements in and relating to the continuous processing of filamentary tow |
Publications (1)
Publication Number | Publication Date |
---|---|
US2657433A true US2657433A (en) | 1953-11-03 |
Family
ID=10264782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US253706A Expired - Lifetime US2657433A (en) | 1950-11-14 | 1951-10-29 | Continuous processing of filamentary tow |
Country Status (4)
Country | Link |
---|---|
US (1) | US2657433A (fr) |
DE (1) | DE930343C (fr) |
FR (1) | FR1045127A (fr) |
GB (1) | GB695384A (fr) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2737688A (en) * | 1953-05-25 | 1956-03-13 | Eastman Kodak Co | Tow opening device |
US2748426A (en) * | 1953-06-12 | 1956-06-05 | Turbo Machine Co | Apparatus for producing staple fibers |
US2851732A (en) * | 1953-07-14 | 1958-09-16 | Du Pont | Split filament bundle at finish roll |
US2908045A (en) * | 1955-10-20 | 1959-10-13 | Eastman Kodak Co | Method for removing false twist and longitudinal folds from continuous filament crimped tow |
US3032829A (en) * | 1958-02-11 | 1962-05-08 | Celanese Corp | Processing tow |
US3077004A (en) * | 1956-03-23 | 1963-02-12 | Du Pont | Filament drawing |
US3079663A (en) * | 1958-05-21 | 1963-03-05 | Eastman Kodak Co | Method and apparatus for producing tobacco smoke filters |
US3115691A (en) * | 1961-05-31 | 1963-12-31 | Du Pont | Apparatus for interlacing multifilament yarn |
US3412914A (en) * | 1966-03-18 | 1968-11-26 | Owens Corning Fiberglass Corp | Method and means for strand dispersal |
US3501811A (en) * | 1967-07-03 | 1970-03-24 | Celanese Corp | Continuous filament webs |
US3696601A (en) * | 1968-08-12 | 1972-10-10 | Henry W Mccard | Textile heating and cooling |
US4525385A (en) * | 1983-02-18 | 1985-06-25 | R. J. Reynolds Tobacco Company | Application of additives to cigarette filter tow |
US5225018A (en) * | 1989-11-08 | 1993-07-06 | Fiberweb North America, Inc. | Method and apparatus for providing uniformly distributed filaments from a spun filament bundle and spunbonded fabric obtained therefrom |
EP2377978A1 (fr) * | 2010-04-19 | 2011-10-19 | 3B-Fibreglass SPRL | Procédé et appareil pour étaler des brins de fibres |
WO2011131670A1 (fr) * | 2010-04-19 | 2011-10-27 | 3B-Fibreglass Sprl | Procédé et équipement pour le renforcement d'une substance ou d'un objet à l'aide de filaments continus |
US20120010059A1 (en) * | 2010-07-08 | 2012-01-12 | G.D S.P.A. | Machine and method for manufacturing composite filters |
US20150148207A1 (en) * | 2012-05-14 | 2015-05-28 | Xu Wang | Mehod and device for forming cigarette filter rod |
US20190275705A1 (en) * | 2018-03-06 | 2019-09-12 | Aerlyte, Inc. | Fiber-reinforced composites and methods of forming and using same |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1105117B (de) * | 1955-12-22 | 1961-04-20 | Owens Corning Fiberglass Corp | Verfahren zur Herstellung von Straengen, insbesondere aus Glasfaeden |
DE1078982B (de) * | 1956-07-05 | 1960-04-07 | Sucker G M B H Geb | Verfahren und Einrichtung zum Trocknen von Fadenscharen |
BE625194A (fr) * | 1961-11-23 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2219356A (en) * | 1936-07-31 | 1940-10-29 | Celanese Corp | Manufacture of staple fiber products from continuous filaments |
US2351549A (en) * | 1941-10-16 | 1944-06-13 | Proctor & Schwartz Inc | Method for treating filaments and threads |
US2379824A (en) * | 1943-03-06 | 1945-07-03 | Du Pont | Process and apparatus for treating artificial filaments |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE549457C (de) * | 1929-05-29 | 1932-04-28 | Gustav Micklisch | Verfahren und Vorrichtung zur Herstellung von Kunstseidenfaeden nach dem Spulenspinn- oder Streckspinnverfahren |
-
1950
- 1950-11-14 GB GB27758/50A patent/GB695384A/en not_active Expired
-
1951
- 1951-10-29 US US253706A patent/US2657433A/en not_active Expired - Lifetime
- 1951-11-13 DE DEC4950A patent/DE930343C/de not_active Expired
- 1951-11-14 FR FR1045127D patent/FR1045127A/fr not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2219356A (en) * | 1936-07-31 | 1940-10-29 | Celanese Corp | Manufacture of staple fiber products from continuous filaments |
US2351549A (en) * | 1941-10-16 | 1944-06-13 | Proctor & Schwartz Inc | Method for treating filaments and threads |
US2379824A (en) * | 1943-03-06 | 1945-07-03 | Du Pont | Process and apparatus for treating artificial filaments |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2737688A (en) * | 1953-05-25 | 1956-03-13 | Eastman Kodak Co | Tow opening device |
US2748426A (en) * | 1953-06-12 | 1956-06-05 | Turbo Machine Co | Apparatus for producing staple fibers |
US2851732A (en) * | 1953-07-14 | 1958-09-16 | Du Pont | Split filament bundle at finish roll |
US2908045A (en) * | 1955-10-20 | 1959-10-13 | Eastman Kodak Co | Method for removing false twist and longitudinal folds from continuous filament crimped tow |
US3077004A (en) * | 1956-03-23 | 1963-02-12 | Du Pont | Filament drawing |
US3032829A (en) * | 1958-02-11 | 1962-05-08 | Celanese Corp | Processing tow |
US3079663A (en) * | 1958-05-21 | 1963-03-05 | Eastman Kodak Co | Method and apparatus for producing tobacco smoke filters |
US3115691A (en) * | 1961-05-31 | 1963-12-31 | Du Pont | Apparatus for interlacing multifilament yarn |
US3412914A (en) * | 1966-03-18 | 1968-11-26 | Owens Corning Fiberglass Corp | Method and means for strand dispersal |
US3501811A (en) * | 1967-07-03 | 1970-03-24 | Celanese Corp | Continuous filament webs |
US3696601A (en) * | 1968-08-12 | 1972-10-10 | Henry W Mccard | Textile heating and cooling |
US4525385A (en) * | 1983-02-18 | 1985-06-25 | R. J. Reynolds Tobacco Company | Application of additives to cigarette filter tow |
US5225018A (en) * | 1989-11-08 | 1993-07-06 | Fiberweb North America, Inc. | Method and apparatus for providing uniformly distributed filaments from a spun filament bundle and spunbonded fabric obtained therefrom |
EP2377978A1 (fr) * | 2010-04-19 | 2011-10-19 | 3B-Fibreglass SPRL | Procédé et appareil pour étaler des brins de fibres |
WO2011131670A1 (fr) * | 2010-04-19 | 2011-10-27 | 3B-Fibreglass Sprl | Procédé et équipement pour le renforcement d'une substance ou d'un objet à l'aide de filaments continus |
US20120010059A1 (en) * | 2010-07-08 | 2012-01-12 | G.D S.P.A. | Machine and method for manufacturing composite filters |
US8992400B2 (en) * | 2010-07-08 | 2015-03-31 | G.D S.P.A. | Machine and method for manufacturing composite filters |
US20150148207A1 (en) * | 2012-05-14 | 2015-05-28 | Xu Wang | Mehod and device for forming cigarette filter rod |
US9936728B2 (en) * | 2012-05-14 | 2018-04-10 | Shanghai Tabacco Group Co., Ltd. | Method and device for forming cigarette filter rod |
US20190275705A1 (en) * | 2018-03-06 | 2019-09-12 | Aerlyte, Inc. | Fiber-reinforced composites and methods of forming and using same |
US10518442B2 (en) * | 2018-03-06 | 2019-12-31 | Aerlyte, Inc. | Fiber-reinforced composites and methods of forming and using same |
US11220025B2 (en) | 2018-03-06 | 2022-01-11 | Aerlyte, Inc. | Methods of separating carbon fiber tows |
Also Published As
Publication number | Publication date |
---|---|
FR1045127A (fr) | 1953-11-24 |
DE930343C (de) | 1955-07-14 |
GB695384A (en) | 1953-08-12 |
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