Coated polyester fiberfill
Abstract
Abstract POLYESTER FIBERFILL HAVING IMPROVED COMPRESSIONAL RECOVERY IS PROVIDED COMPRISING CRIMPED POLYESTER STAPLE FIBER HAVING COCRYSTALLIZED ON THE SURFACE THEREOF A COPOLYESTER COMPRISING ABOUT 20 TO 95 PERCENT BY WEIGHT OF POLYOXYALKYLENE UNITS AND ABOUT 80 TO 5 PERCENT BY WEIGHT OF ESTER UNITS IDENTICAL TO THOSE PRESENT IN THE POLYESTER STAPLE FIBER SUBSTRATE. THIS IMPROVED POLYESTER FIBERFILL IS PREPARED BY WET TREATING UNCRIMPED POLYESTER FIBER WITH THE COPOLYESTER IN ORDER TO PROVIDE A COATING THEREON OF THE COPOLYESTER, DRAWING THE TREATED FIBER IF NOT PREVIOUSLY DRAWN, HEAT TREATING THE COATED FIBER TO FIX THE COPOLYESTER TO THE FIBER SURFACE, CRIMPING THE COATED FIBER AND THEREAFTER PROCESSING THE COATED CRIMPED FIBER INTO FIBERFILL BY CONVENTIONAL METHODS FOR USE AS A FILLER FOR ARTICLES OF MANUFACTURE, SUCH AS PILLOWS, UPHOLSTERY AND THE LIKE.
Inventors
- 👤 Clarence V Jayne
- 👤 Gazie K Ragep
- 👤 James D Templeton
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |