US3580218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for applying a coating of adhesive material on to a support
Assignee: Stadex AB
•
Filing: 1968-02-08
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Granted: 1971-05-25
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Expires: 1988-02-08
Abstract
Abstract The invention provides an apparatus for applying a coating of adhesive material on to a support, e.g. a strip of paper. To apply this coating, one surface of the strip is fed over a guide surface through a fluidized bed of the adhesive material in cooled comminuted form, the bed particles which come into contact with said surface being caused to become fixed thereto.
Inventors
- 👤 Friedrich Grundschober
- 👤 Joerg Sambeth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:29
CPC Classifications
B; B05; B05C; B05C19/00; B05C19/02; Y; Y10; Y10S; Y10S118/00; Y10S118/05
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
32 words
Apparatus according to claim 1, wherein said dipping means include a guide for causing said support to travel through said fluidized bed to bring said surface thereof into contact with said bed.
Claim 2
Dependent Claim
29 words
Apparatus according to claim 1, wherein said particle-fixing means includes heating means for raising said dipping means to a temperature such as to ensure localized melting of said particles.
Claim 3
Dependent Claim
42 words
Apparatus according to claim 1, wherein said fixing means includes an electric voltage source connected to said vessel and to said dipping means to set up between the fluidized bed and said surface an electric field for the fixing of said particles.
Claim 4
Dependent Claim
45 words
Apparatus according to claim 1, further comprising a heating station for heating said surface, as it issues from said vessel to a temperature such as to melt the particles fixed thereto and to cause said particles to form on said surface a smooth uniform layer.
Claim 5
Dependent Claim
14 words
Apparatus according to claim 5, wherein said heating station includes an infrared radiation source.
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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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |