Method of producing wooden boards from thin wooden sheets
Abstract
Abstract THIN WOODEN SHEETS, SUCH AS THIN PLIES OR SHAVINGS, ARE VACUUM IMPREGNATED WITH ONE COMPONENT OF A TWO-COMPONENT PLASTIC ADHESIVE PRIOR TO BEING BONDED TOGETHER TO FORM A WOODEN BOARD THROUGH APPLICATION OF HEAT AND PRESSURE AND THROUGH THE USE OF AN ADHESIVE CONTAINING AN ADDITION OF THE SECOND COMPONENT OF SAID TWO COMPONENT PLASTIC ADHESIVE. IN PRACTIVE HITHERTO ALL TWO COMPONENT PLASTIC ADHESIVES HAVE BEEN FORMALDEHYDE PRODUCTS, AND IN SUCH CASES THE THIN WOODEN SHEETS OUGHT TO BE VACUUM IMPREGNATED WITH THE COMPONENT DIFFERENT FROM FORMALIN. SIMULTANEOUSLY WITH THE SAID ONE PLASTIC COMPONENT THE THIN WOODEN SHEETS MAY BE IMPREGNATED WITH A SALT ACTING AS A CATALYTIC AGENT IN THE REACTION BETWEEN THE PLASTIC COMPONENTS AND/OR WITH OTHER IMPREGNATING AGENTS.
Inventors
- 👤 Christen Christoffersen
- 👤 Karl-Otto Sorensen
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |