Patent US4378390A successfully refreshed from Google Patents.
US4378390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of coating a metal strip with high-viscosity coating material
Assignee: Nippon Steel Corp
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Filing: 1981-10-05
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Granted: 1983-03-29
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Expires: 2001-10-05
Abstract
Abstract An apparatus for applying a coating of high-viscosity coating material onto a metal strip at high speed, wherein the apparatus has a roll having recesses or grooves thereon; a supplying source for forcedly filling the coating material in the recesses or grooves provided on the roll; a doctor for removing excessive coating material remaining on the roll having recesses or grooves other than the coating material filled in the recesses or grooves; a coating roll which rotates in contact with the roll having recesses or grooves; at least one smoothing roll of smaller diameter which rotates in contact with the coating roll; and a back-up roll which holds the metal strip against the coating roll.
Inventors
- 👤 Makoto Yoshida
- 👤 Fumio Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:01
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/28; B05C; B05C1/00; B05C1/04; B05C1/08; B05C1/0826; B05C1/0834; B05C11/00; B41; B41F; B41F9/00; B41F9/01; G; G03; G03F; G03F7/00; G03F7/16; B05D2202/00; B05D2252/00; B05D2252/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
112 words
A process of coating a metal strip with a high-viscosity coating material, which comprises: forcedly applying the coating material, having a viscosity of at least 500 cp, and being under a pressure of at least 0.2 kg/cm 2 , to the surface of a gravure roll rotating at a circumferential speed of at least 50 m/min; removing any excess of said coating material from said surface of said gravure roll; transferring said coating material remaining on said surface of said gravure roll to a coating roll through a transfer roll; and coating said metal strip, running at a speed of at least 50 m/min, with said coating material from said coating roll.
Claim 2
Dependent Claim
112 words
A process of coating a metal strip with a high-viscosity coating material, which comprises: forcedly applying the coating material, having a viscosity of at least 500 cp, and being under a pressure of at least 0.2 kg/cm 2 , to the surface of a gravure roll rotating at a circumferential speed of at least 50 m/min; removing any excess of said coating material from said surface of said gravure roll; transferring said coating material remaining on said surface of said gravure roll to a coating roll through a transfer roll; and coating said metal strip, running at a speed of at least 50 m/min, with said coating material from said coating roll.
Claim 3
Dependent Claim
28 words
A process according to claim 1, in which said coating material is pumped to and pressure fed onto said surface of said gravure roll through a slit nozzle.
Claim 4
Dependent Claim
19 words
A process according to claim 1, in which said pressure of said coating material is 1-2 kg/cm 2 .
Claim 5
Dependent Claim
40 words
A process according to claim 1, in which at least one smoothing roll is provided at the surface of said coating roll and is rotated at a circumferential speed deviating no more than ±50% of that of said coating roll.
Claim 6
Dependent Claim
19 words
A process according to claim 1, in which the viscosity of said coating material is 1000 to 80,000 cp.
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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) | 1986-03-28 | 1986-09-27 | 1987-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-28 | 1990-09-27 | 1991-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-28 | 1994-09-27 | 1995-03-29 | $7700.00 | Window Closed / Lapsed |