High bulk yarn formable mixtures of linear polymeric thermoplastic materials
Abstract
Abstract THE INVENTION CONTEMPLATES THE PREPARATION OF FIBRILLATED YARNS OR STRANDS HAVING HIGH BULK AND GOOD TACTILE PROPERTIES FROM A UNITARY STRUCTURE, E.G. MONOFLAMENTS. THE MONOFILS, TAPES, FILMS AND THE LIKE HEREAFTER REFERRED TO AS A MONOFIL ARE EXTRUDED FROM POLYMER MIXTURES CONSISTING OF (A) A LOW MOLECULAR WEIGHT POLYESTER AND (B) ONE OR MORE OF THE FOLLOWING POLYMERS; (I) A FIBER FORMING POLYAMIDE, (II) A FIBER FORMING POLYESTER AND (III) A FIBER FORMING POLYOLEFIN IN BLENDS OR MIXTURES WHOSE COMPOSITION IS CAPABLE OF PRODUCING SUITABLE FIBERS. THE SPLITTING OF THE MONOFIL INTO A RELATIVELY HIHG BULK STRUCTURE CONTAINING MANY FIBRILS IS EFFECTED BY SUITABLE MECHANICAL WORKING WHICH BREAKS OR FISSURES THE MONOFIL INTO SEPARATE FIBRILS.
Inventors
- 👤 George E R Lamb
- 👤 Dusan C Prevorsek
- 👤 Abraham M Kotliar
- 👤 Hendrikus J Oswald
Bibliographic Details
Claims Analysis
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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) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |