US4171387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating wood substrates
Assignee: US PLYWOOD Corp A CORP OF
•
Filing: 1978-02-06
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Granted: 1979-10-16
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Expires: 1998-02-06
Abstract
Abstract A cellulosic substrate is coated by applying a polyurethane adhesive thereto, drying the adhesive, coating the adhesive with an ultraviolet curable solid polyacrylate resin and then curing the composite structure with ultraviolet rays.
Inventors
- 👤 Ozzie Fogle
- 👤 James Cooley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:56
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/06; B05D7/08; B05D7/50; B05D7/52; B05D7/54; B05D7/544; B05D2502/00; B05D2503/00; B05D3/00; B05D3/06; B05D3/061; B05D3/065; B05D3/067; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/31576; Y10T428/31591
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
74 words
A method of forming a coated substrate selected from the group consisting of plywood, composition board, lauan and hardboard, which comprises applying to said substrate a urethane adhesive having about 25-35% solids content, drying said adhesive, applying on to said adhesive an ultraviolet curable polyacrylate resin composition comprising about 77-89% solid polyacrylate resin, about 10-20% silica pigment and about 1-3% photo-initiator, and thereafter curing the composite resulting structure by exposure thereof to ultraviolet radiation.
Claim 2
Independent Claim
74 words
A method of forming a coated substrate selected from the group consisting of plywood, composition board, lauan and hardboard, which comprises applying to said substrate a urethane adhesive having about 25-35% solids content, drying said adhesive, applying on to said adhesive an ultraviolet curable polyacrylate resin composition comprising about 77-89% solid polyacrylate resin, about 10-20% silica pigment and about 1-3% photo-initiator, and thereafter curing the composite resulting structure by exposure thereof to ultraviolet radiation.
Claim 3
Dependent Claim
28 words
The method of claim 1 wherein said urethane adhesive is applied at a rate such as to provide about 1-5 wet mils of urethane adhesive on said substrate.
Claim 4
Dependent Claim
17 words
The method of claim 2 wherein said rate is that required to produce about 2-3 wet mils.
Claim 5
Dependent Claim
28 words
The method of claim 3 wherein said adhesive is applied to said substrate in at least two separate applications and after each application, the coated adhesive is dried.
Claim 6
Dependent Claim
15 words
The method of claim 4 wherein said steps are carried out in a continuous sequence.
Claim 7
Dependent Claim
26 words
The method of claim 1 wherein said urethane adhesive has a viscosity of 800-2500 cps and said polyacrylate resin has a viscosity of from 300-1200 cps.
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) | 1982-10-15 | 1983-04-16 | 1983-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-15 | 1987-04-16 | 1987-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-15 | 1991-04-16 | 1991-10-16 | $7700.00 | Window Closed / Lapsed |