Method of changing surface characteristics of sized glass fibers and fibers having changeable surface characteristics
Abstract
Abstract GLASS FIBERES HAVING A COATING THEREON OF A POWDERY TYPE GLASS LUBRICANT HAVING EMULSIFIED PARTICLES OF A THERMOPLASTIC RESIN ADJACENT THE SURFACE OF THE COATING. THE EMULSIFIED PARTICLES ARE SEPARATED BY THE POWDERY TYPE LUBRICANT TO PROVIDE A SURFACE ADAPTABLE FOR INITIAL STAGES OF FABRICATION, FOLLOWING WHICH THE COATED FIBERS ARE HEAT TREATED TO AGGLOMERATE THE HEAT SOFTENABLE PARTICLES AND CHANGE THE SURFACE CHARACTERISTICS OF THE COATED FIBERS FOR SUBSEQUENT PROCESSING AND/OR USE. IN A PROFERRED EMBODIMENT, THE HEAT SOFTENABLE PARTICLES ARE CAUSED TO CONGREGATE AT THE SURFACE OF THE COATING BY REASON OF AN ANIONIC EMULSIFYING AGENT. IN THE MOST PERFERRED EMBODIMENT. THE COATING IS PRIMARILY A STARCH COATING WITH THE EMULSIFIED PARTICLES OF THE HEAT SOFTENABLE RESIN KEPT SEPARATED BY THE STARCH. AFTER THE TWISTING OPERATION, THE COATED FIBERS ARE, THOROUGHLY DRIED AND HEATED ABOVE THE SOFTENABLE POINT OF THE RESIN TO PROVIDE A CONTROLLED ADHESION BETWEEN THE FIBERS.
Inventors
- 👤 H Haynes
- 👤 M Harvey
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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |