Patent US3628224A successfully refreshed from Google Patents.
US3628224A
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US
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Process and apparatus for continuously treating manmade filament tows under a normal pressure condition
Assignee: Mitsubishi Chemical Corp
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Filing: 1970-06-18
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Granted: 1971-12-21
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Expires: 1990-06-18
Abstract
Abstract A process and apparatus are disclosed for continuously and uniformly wet-treating a manmade filament tow under a normal pressure condition without undesirable entanglement and excessive elongation of the filaments. The manmade filament tow is impregnated with a treating liquid, accumulated in a treating box in a square column-form, heated at a given temperature for a predetermined time period while passing through the treating box, cooled in a cooling means by passing cooling water through said tow accumulation, washed in a washing means with a washing liquid and then crimped into a desired crimped form. These processes are carried out uniformly and continuously without any disturbance of the filament tow. The process and apparatus of the present invention is valuable for obtaining the wet-treated and crimped manmade filament tow which is adequate to be subjected to draftcutting-type tow spinning.
Inventors
- 👤 Kenichi Murotani
- 👤 Hiroshi Sugimoto
- 👤 Hajime Sahara
- 👤 Kenzo Kosaka
- 👤 Kiyoshi Adachi
- 👤 Tunehiko Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:12
CPC Classifications
D; D06; D06B; D06B3/00; D06B3/04; D02; D02G; D02G1/00; D02G1/12
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
14 words
A process as set forth in claim 1, wherein said impregnating is vigoureux printing.
Claim 2
Dependent Claim
25 words
A process as set forth in claim 1, wherein the height of said tow accumulation in said treating means is maintained between two preselected levels.
Claim 3
Dependent Claim
14 words
A process as set forth in claim 1, wherein said heating medium is steam.
Claim 4
Dependent Claim
13 words
A process as set forth in claim 4, wherein said steam is superheated.
Claim 5
Dependent Claim
38 words
A process as set forth in claim 1, wherein said heating medium flows into said tow accumulation through one side thereof, flows laterally across said tow accumulation and flows out through an opposite side of said tow accumulation.
Claim 6
Dependent Claim
33 words
A process as set forth in claim 1, wherein said heating medium flows into said tow accumulation through at least two sides facing each other thereof and flows lengthwisely through said tow accumulation.
Claim 7
Dependent Claim
25 words
A process as set forth in claim 6, wherein the flow direction of said heating medium alternates for each predetermined length of said tow accumulation.
Claim 8
Dependent Claim
14 words
A process as set forth in claim 1, wherein said cooling medium is water.
Claim 9
Dependent Claim
14 words
A process as set forth in claim 1, wherein said cooling medium is air.
Claim 10
Dependent Claim
32 words
A process as set forth in claim 1, wherein said cooling medium flows through said tow accumulation in a substantially opposite direction with respect to a passing direction of said tow accumulation.
Claim 11
Dependent Claim
30 words
A process as set forth in claim 10, wherein said cooling air flows through said tow accumulation in a substantially similar direction to a passing direction of said tow accumulation.
Claim 12
Dependent Claim
18 words
A process as set forth in claim 10, wherein said cooling air flows laterally across said tow accumulation.
Claim 13
Dependent Claim
28 words
A process as set forth in claim 1, wherein said drying is carried out while maintaining the washed filament tow under a tension of 0.01 to 0.04 g./d.
Claim 14
Independent Claim
294 words
An apparatus for continuously treating A manmade filament tow under a normal pressure condition comprising, in combination, the following means successively arranged along the path of travel of the filament tow; (a) means for impregnating said manmade filament tow with a treating liquid, (b) a treating box for treating said filament tow which comprises (1) a substantially perpendicular inner cylinder for containing said filament tow having a square lateral cross-sectional profile and being provided with an open upper end and at least two sidewalls having means therein defining numerous apertures and facing each other, and (2) a substantially perpendicular outer cylinder encompassing said inner cylinder and forming a peripheral heating medium passage between said inner cylinder and said outer cylinder, (c) means for cooling said filament tow which comprises a cooling medium chamber having a supply inlet of a cooling medium and a substantially U-shaped guide path for passing said filament tow contained in said cooling medium chamber and having means therein defining numerous aperture formed near said supply inlet, (d) means for tensioning said filament tow disposed downstream of said cooling means, (e) means for washing said filament tow comprising at least one washing unit which comprises a washing bath for containing a washing liquid, a rotatable suction drum for carrying said filament tow contained in said washing bath and having a periphery with means therein defining numerous apertures, and a suction pump for circulating said washing liquid through said washing bath, said apertures and an inner space of said suction drum, (f) a dryer for drying said filament tow and including means for maintaining the filament tow under tension, and (g) a crimper being provided with a stuffing box having at least one steam ejecting opening connected to a steam supply source.
Claim 15
Dependent Claim
17 words
An apparatus as set forth in claim 15, wherein said impregnating means comprises a vigoureux printing means.
Claim 16
Dependent Claim
60 words
An apparatus as set forth in claim 15, wherein said peripheral heating medium passage is lengthwisely divided into two passages one of which connects a heating medium source to one sidewall of said inner cylinder having said apertures, and another one of which connects an opposite sidewall of said inner cylinder having said apertures to outside of said treating box.
Claim 17
Dependent Claim
30 words
An apparatus as set forth in claim 15, wherein said peripheral heating medium passage is laterally divided into two or more passages each being connected to a heating medium source.
Claim 18
Dependent Claim
24 words
An apparatus as set forth in claim 17, wherein said lengthwisely divided heating medium passages are further laterally divided into two or more spaces.
Claim 19
Dependent Claim
21 words
An apparatus as set forth in claim 15, wherein said inner cylinder has said apertures only at a lower portion thereof.
Claim 20
Dependent Claim
46 words
An apparatus as set forth in claim 15, wherein said cooling medium supply inlet is disposed in a vicinity of a delivery terminal of said guide path and a cooling medium discharge outlet is disposed in a vicinity of a supply terminal of said guide path.
Claim 21
Dependent Claim
26 words
An apparatus as set forth in claim 15, wherein said apertures of said guide path are formed only at a bottom wall of said guide path.
Claim 22
Dependent Claim
29 words
An apparatus as set forth in claim 15, wherein said apertures of said guide path are formed at a bottom wall and a roof wall of said guide path.
Claim 23
Dependent Claim
37 words
An apparatus as set forth in claim 15, wherein said cooling medium chamber is a cooling air chamber and a cooling air supply inlet is disposed in the vicinity of a supply terminal of said guide path.
Claim 24
Dependent Claim
26 words
An apparatus as set forth in claim 24, wherein a cooling air discharge outlet is further disposed at a top portion of said cooling air chamber.
Claim 25
Dependent Claim
15 words
An apparatus as set forth in claim 15, wherein said dryer is a cylinder dryer.
Claim 26
Dependent Claim
15 words
An apparatus as set forth in claim 15, wherein said dryer is a roller dryer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |