Patent US3635192A successfully refreshed from Google Patents.
US3635192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for coating foils, tapes and the like
Assignee: Agfa Gevaert AG
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Filing: 1969-09-19
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Granted: 1972-01-18
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Expires: 1989-09-19
Abstract
Abstract An apparatus for coating foils, tapes with viscous solutions, comprising a guide member for the support to be coated, a wedgetype casting device as preliminary coating means and a striplike partition in the direction of movement of the support, forming a gap with a support extending over the width of the web. That partition now is serving as final coating means and is arranged between two chambers at different pressure, wherein the preliminary coating means is arranged just before partition. The housing of the preliminary coating means has a construction in the region of the flow slots extending over the width of the web. The flow slot is open in the vicinity of the overflow of the wedge-type casting device.
Inventors
- 👤 Peter Herzhoff
- 👤 Stephan Platz
- 👤 Fritz Maus
- 👤 Wolfgang Schweicher
- 👤 Willi Wasser
- 👤 Kurt Browatzki
- 👤 Hans Gref
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:10
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/74; B; B05; B05C; B05C5/00; B05C5/02; B05C5/0254
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
179 words
An apparatus for depositing a coating of viscous solution on a longitudinally moving foil comprising a guide member over and against which said foil is longitudinally traversed, a wedge-type casting device disposed closely adjacent the side of said foil opposite said guide member for feeding said viscous fluid and applying it to said opposite side of said foil, an air chamber partitioning strip having an edge disposed after said casting device in the direction of movement of said foil and spaced closely adjacent said opposite side of said foil, a gap between said edge of said partitioning strip and the adjacent edge of said casting device, airflow means disposed in said gap for directing a tangential flow of air against said deposited coating of viscous solution in a direction opposite to the direction of movement of said foil for smoothly spreading said deposited coating in contact over the width of said opposite side of said foil, and said gap being not greater that 10 mm. whereby the thickness and smoothness of said deposited coating are precisely controlled and maintained.
Claim 2
Independent Claim
179 words
An apparatus for depositing a coating of viscous solution on a longitudinally moving foil comprising a guide member over and against which said foil is longitudinally traversed, a wedge-type casting device disposed closely adjacent the side of said foil opposite said guide member for feeding said viscous fluid and applying it to said opposite side of said foil, an air chamber partitioning strip having an edge disposed after said casting device in the direction of movement of said foil and spaced closely adjacent said opposite side of said foil, a gap between said edge of said partitioning strip and the adjacent edge of said casting device, airflow means disposed in said gap for directing a tangential flow of air against said deposited coating of viscous solution in a direction opposite to the direction of movement of said foil for smoothly spreading said deposited coating in contact over the width of said opposite side of said foil, and said gap being not greater that 10 mm. whereby the thickness and smoothness of said deposited coating are precisely controlled and maintained.
Claim 3
Dependent Claim
69 words
An apparatus as set forth in claim 1 wherein conduit means is connected to said casting device for supplying viscous fluid to it, and said conduit means including a restricted outlet to said casting device whereby back pressure is maintained in said conduit for facilitating the smooth feeding of said solution to said casting device and the distribution of said viscous solution to said opposite side of said foil.
Claim 4
Dependent Claim
51 words
An apparatus as set forth in claim 1 wherein an overflow-collecting device is disposed on the side of said wedge-type casting device remote from said partitioning strip and said overflow-collecting device including an overflow lip disposed adjacent said casting device over which excess viscous solution flows away from said casting device.
Claim 5
Dependent Claim
52 words
An apparatus as set forth in claim 3 wherein the outlet portion of said conduit means between said restricted portion and said casting device has divided outlet means, one of said outlet means being connected to said casting device and the other of said outlet means being connected to said overflow means.
Claim 6
Dependent Claim
64 words
An apparatus as set forth in claim 1 wherein said airflow means includes a nozzle plate disposed next to the side of said partitioning strip adjacent said casting device, and a plurality of air ducts being disposed within and parallel to each other through the edge of said nozzle plate adjacent said partitioning strip and substantially pErpendicular to direction of travel of said foil.
Claim 7
Dependent Claim
38 words
An apparatus as set forth in claim 1 wherein said guide member comprises a curved saddle-shaped element and said saddle-shaped element being mounted on a movable support whereby it may be moved toward and away from said foil.
Claim 8
Dependent Claim
31 words
An apparatus as set forth in claim 6 whereby said saddle-shaped element is perforated to provide air supply passages through it for forming an air cushion between it and said foil.
References Cited (Backward Citations)
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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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |