US3701700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing a continuous non-woven fabric
Assignee: WT ACQUISITION Inc
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Filing: 1970-08-05
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Granted: 1972-10-31
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Expires: 1990-08-05
Abstract
Abstract A BACKING FOR NON-WOVEN FABRIC MADE FROM PARTICULATE THERMOPLASTIC MATERIAL ELIMINATES RESIDUAL STRESS N THERMOPLASTIC BACKINGS. THE FABRIC IS PRODUCED BY SPREADING PARTICULATE THERMOPLASTIC TO A UNIFORM DEPTH, HEATING THE THERMOPLASTIC UNTIL THE PARTICLES ARE FUSED; APLYING FACE MATERIAL TO THE THERMOPLASTIC, AND THEN COOLING THE THERMOPLASTIC WHEREBY THE FACE MATERIAL IS LOCKED THEREIN. THE YARN IS APPLIED TO THE BACKING FROM A ROTATING DRUM HAVING PERIPHERAL POCKETS INTO WHICH THE YARN IS INSERTED TO FORM LOOPS. AFTER APPLICATION OF THE YARN THE FABRIC MAY BE EMBOSSED OR PRINTED.
Inventors
- 👤 Elmer J Von Der Heide
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:49
CPC Classifications
D; D04; D04H; D04H11/00; D04H11/04; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1025; Y10T428/00; Y10T428/23907; Y10T428/23957; Y10T428/23964; Y10T428/23986
Claims Analysis
Total Claims: 0
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References 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) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |