Method for coating work pieces with thermoplastic material
Abstract
Abstract A METHOD OF COATING SHEET MATERIAL WORK PIECES WITH THERMOPLASTIC ADHESIVE MATERIAL IS PROVIDED BY THE PRESURE INVENTION. ACCORDING TO THE METHOD, WORK PIECES ARE ASSEMBLED BETWEEN A LAYER OF THERMOPLASTIC ADHESIVE MATERIAL AND A LAYER OR STRIPPER MATERIAL SUITABLY NEWSPRINT, AND THE ASSEMBLY IS SUBJECTED TO HEAT AND PRESSURE. THE COATED WORK PIECES AND THE STRIPPER LAYER ARE SEPARATED WHILE THE THERMOPLASTIC ADHESIVE IS IN HEAT SOFTENED CONDITION, THE STRIPPER MATERIAL RETAINING SURPLUS ADHESIVE MATERIAL. SUITABLY, THE LAYER OF THERMOPLASTIC ADHESIVE MATERIAL IS A FILM, PREFERABLY SUPPORTED ON A LAYER OF RELEASE MATERIAL, SUITABLY SILICONE PAPER, WHICH ENHANCES THE CLEANLINESS OF THE PRESSING OPERATION AND WHICH UPON SEPARATION SERVES TO RETAIN THE WORK PIECES WHILE SURPLUS THERMOPLASTIC ADHESIVE MATERIAL IS REMOVED ON THE STRIPPER LAYER.
Inventors
- 👤 Terence J L Clarke
- 👤 Ivor Evans
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
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 |