Process for the production of fibers from thermoplastic synthetic material
Abstract
Abstract A PROCESS FOR THE PRODUCTION OF FUR-LIKE FIBERS ON A FLEXIBLE SURFACE IN WHICH A CONTINUOUS FILM OR LAYER OF THERMOPLASTIC SYNTHETIC MATERIAL, OF THE TYPE WHICH BECOMES VISCID WHEN SUFFICIENTLY HEATED, IS HEATED TO THE VISCID TEMPERATURE, IS THEREAFTER ADHERED TO A FLEXIBLE SURFACE AND PULLED AWAY FROM THE SURFACE TO PULL A PLURALITY OF FIBER-LIKE PROJECTIONS OUTWARDLY FROM THE LAYER AT SUBSTANTIALLY RIGHT ANGLES TO THE TRAVELING DIRECTION OF THE FLEXIBLE SURFACE TO FORM A MULTIPLICITY OF FIBRILS, RESEMBLING FUR, ON THE FLEXIBLE SURFACE. THE PROCESS OF THE INVENTION EXHIBITS SURPRISINGLY GOOD RESULTS WHEN AN INERT GASEOUS MEDIUM IS FED UNDER PRESSURE TO THE FIBRILS OF THE THERMOPLASTIC MATERIAL DURING THE FORMATION OF THE FIBER-LIKE PROJECTIONS TO SIMULTANEOUSLY EFFECT COOLING AND TENSIONING OF THE FIBRILS TO IMPART FURTHER LENGTHENING OF THE INNER ENDS OF THE FIBRILS AND SEPARATION OF THE FIBRILS FROM THE HEATED ROLL.
Inventors
- 👤 K Seiffert
Bibliographic Details
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |