US3272898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing a nonwoven web
Assignee: EIDP Inc
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Filing: 1965-06-11
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Granted: 1966-09-13
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Expires: 1985-06-11
Abstract
No abstract record available.
Inventors
- 👤 Knee Terence Edward Creasey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:04
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/08; D04H3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A PROCESS FOR PRODUCING A BULKED NONWOVEN STRUCTURE OF CONTINUOUS FILAMENTS OF SYNTHETIC ORGANIC POLYMERIC COMPOSITION COMPRISING (1) FORMING AN UNBOUNDED NONWOVEN WEB COMPOSED OF CONTINUOUS FILAMENTS OF SYNTHETIC, ORGANIC POLYMERIC COMPOSITION WITH A MAJOR PORTION OF SAID CONTINUOUS FILAMENTS HAVING A SHRINKAGE VALUE OF LESS THAN ABOUT 15%, AND A MINOR PORTION OF SAID CONTINUOUS FILAMENTS HAVING A SHRINKAGE VALUE OF AT LEAST ABOUT 40%, SAID FORMING CHARACTERIZED BY THE PROCESS CONDITIONS NECESSARY TO FORM THE SAID CONTINUOUS FILAMENTS HAVING THE SAID SHRINKAGE VALUES, SAID MAJOR AND MINOR PORTIONS OF SAID CONTINUOUS FILAMENTS BEING RANDOMYL AND THOROUGHLY ADMIXED WITH ONE ANOTHER, AND THEN (2) SUBJECTING SAID UNBOONDED NONWOVEN WEB TO SHRINKAGE CONDITIONS WHILE IN AN UNRESTRAINED STATE IN ORDE TO CAUSE SAID MINOR PORTION TO SAID CONTINUOUS FILAMENTS TO DRAW TOGETHER THE MAJOR PORTION OF SAID CONTINOUS FILAMENTS INTO TWISTED, CONVOLUTED, CRIMPED CONFIGURATIONS, AND CAUSE BULKING OF SAID NONWOVEN WEB AS WELL AS A REDUCTION IN AREA OF SAID NONWOVEN WEB OF AT LEAST ABOUT 20%.
Claim 2
Dependent Claim
167 words
A PROCESS FOR PRODUCING A BULKED NONWOVEN STRUCTURE OF CONTINUOUS FILAMENTS OF SYNTHETIC ORGANIC POLYMERIC COMPOSITION COMPRISING (1) FORMING AN UNBOUNDED NONWOVEN WEB COMPOSED OF CONTINUOUS FILAMENTS OF SYNTHETIC, ORGANIC POLYMERIC COMPOSITION WITH A MAJOR PORTION OF SAID CONTINUOUS FILAMENTS HAVING A SHRINKAGE VALUE OF LESS THAN ABOUT 15%, AND A MINOR PORTION OF SAID CONTINUOUS FILAMENTS HAVING A SHRINKAGE VALUE OF AT LEAST ABOUT 40%, SAID FORMING CHARACTERIZED BY THE PROCESS CONDITIONS NECESSARY TO FORM THE SAID CONTINUOUS FILAMENTS HAVING THE SAID SHRINKAGE VALUES, SAID MAJOR AND MINOR PORTIONS OF SAID CONTINUOUS FILAMENTS BEING RANDOMYL AND THOROUGHLY ADMIXED WITH ONE ANOTHER, AND THEN (2) SUBJECTING SAID UNBOONDED NONWOVEN WEB TO SHRINKAGE CONDITIONS WHILE IN AN UNRESTRAINED STATE IN ORDE TO CAUSE SAID MINOR PORTION TO SAID CONTINUOUS FILAMENTS TO DRAW TOGETHER THE MAJOR PORTION OF SAID CONTINOUS FILAMENTS INTO TWISTED, CONVOLUTED, CRIMPED CONFIGURATIONS, AND CAUSE BULKING OF SAID NONWOVEN WEB AS WELL AS A REDUCTION IN AREA OF SAID NONWOVEN WEB OF AT LEAST ABOUT 20%.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |