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US4264644A
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US
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Method for coating textile bases with powdery synthetic material
Assignee: SCHAETTI & Co A CORP OF SWITZERLAND
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Filing: 1979-04-13
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Granted: 1981-04-28
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Expires: 1999-04-13
Abstract
Abstract A method for coating textile bases with a specified pattern of synthetic powder wherein the synthetic powder is applied to a water-cooled engraved roller and transferred to a textile base material while being under heat treatment for a substantial portion of the travel of the textile base along the application roller. Such heat treatment is provided by heat emitters external to the application roller thereby providing heating of the textile base and the powder through it.
Inventors
- 👤 Josef Schaetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:23
CPC Classifications
D; D06; D06M; D06M23/00; D06M23/08; D06B; D06B1/00; D06B1/10; D06B1/14; D06B1/148; D06B11/00; D06B11/0056; D06B11/0066; D06B21/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
118 words
In a method for coating a textile base with powdery synthetic material by means of an engraved water-cooled application roll on which the powdery synthetic material is spread at a powder application station and transferred under heat treatment onto the textile base and is resintered, the improvement comprising; preheating said textile base by means of heat radiation, guiding said textile base around and in contact with the watercooled engraved application roller while being heated by radiation heat emitters in one or several stages along a portion external to the circumference of the application roller with the powder being sintered on the base over a relatively large transfer zone during a substantial portion of travel of said application roller.
Claim 2
Dependent Claim
118 words
In a method for coating a textile base with powdery synthetic material by means of an engraved water-cooled application roll on which the powdery synthetic material is spread at a powder application station and transferred under heat treatment onto the textile base and is resintered, the improvement comprising; preheating said textile base by means of heat radiation, guiding said textile base around and in contact with the watercooled engraved application roller while being heated by radiation heat emitters in one or several stages along a portion external to the circumference of the application roller with the powder being sintered on the base over a relatively large transfer zone during a substantial portion of travel of said application roller.
Claim 3
Dependent Claim
38 words
Method as defined in claim 1 characterized by the fact that the preheated textile base is pressed against the engraved application roll by means of an unheated guide roller as close as possible to the powder application station.
Claim 4
Dependent Claim
26 words
Method as defined in claim 1 characterized by the fact that the engraved application roll is cleaned of residual powder particles before the powder application station.
Claim 5
Dependent Claim
28 words
Method as defined in claim 1 characterized by the fact that the treated textile base is passed through another infrared radiation emitter station after leaving said application roller.
Claim 6
Dependent Claim
15 words
Method as defined in claim 1 characterized by said heat emitters comprising multiple infrared emitters.
Claim 7
Dependent Claim
24 words
Method as defined in claim 1 characterized by the fact that the powder application station reservoir is water-cooled to prevent clogging of the powder.
Claim 8
Dependent Claim
23 words
Method as defined in claim 1 characterized by said textile base in transfer zone being maintained at about 80° to about 200° C.
Claim 9
Dependent Claim
23 words
Method as defined in claim 7 characterized by said temperature of said textile base being maintained at about 80° to about 120° C.
Claim 10
Dependent Claim
21 words
Method as defined in claim 1 characterized by said transfer zone comprising about half of the circumference of said application roller.
Claim 11
Dependent Claim
18 words
Method as defined in claim 7 wherein said textile base is preheated to about 70° to 80° C.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-27 | 1984-10-27 | 1985-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-27 | 1988-10-27 | 1989-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-27 | 1992-10-27 | 1993-04-28 | $7700.00 | Window Closed / Lapsed |