Method of making fastening fabric
Abstract
Abstract This invention relates to method for making separable fastening fabric in fabric fasteners. The method comprises the steps of forming a number of projecting piles having free ends and made of thermoplastic resinous material on one surface of a base fabric; soaking said base fabric in liquid in a container; removing said base fabric from said container thereby forming a liquid layer on said base fabric among said projecting piles; and then passing said base fabric along a heater and heating same in such a manner that said one surface of said base fabric having said projecting piles faces said heater and subjecting said projecting piles and liquid layer to heat of the heater such that said liquid layer evaporates to expose free ends of said piles and to the extent of said evaporation of said layer the exposed free ends of said filaments are melted and swelled by surface extension to spherically swollen headed pile elements on said base fabric.
Inventors
- 👤 Y Chiba
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) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |