US3122297A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-ply liner bags
Assignee: Union Carbide Corp
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Filing: 1961-10-23
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Granted: 1964-02-25
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Expires: 1981-10-23
Abstract
No abstract record available.
Inventors
- 👤 John P Sachs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:25
CPC Classifications
B; B65; B65D; B65D77/00; B65D77/04; B65D77/06; B65D77/062; B65D77/065; B65D31/00; B65D31/02; Y; Y10; Y10S; Y10S128/00; Y10S128/24; Y10S383/00; Y10S383/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
200 words
A FLEXIBLE, LEAKPROOF, COLLAPSIBLE, MULTI-PLY LINER BAG FOR PERISHABLE MATERIAL SUCH AS MILK AND THE LIKE, COMPRISING AN INNER PLY OF FLATTENED SEAMLESS TUBULAR POLYOLEFIN FILM INTERIORLY ESSENTIALLY STERILE, AND A CONCENTRIC COEXTENSIVE OUTER PLY OF CENTER-FOLDED POLYOLEFIN SHEETING CIRCUMSCRIBED ABOUT SAID INNER PLY, SAID CENTER-FOLD OF THE SHEETING BEING JUXTAPOSED ALONG ONE FLATTENED EDGE OF SAID SEAMLESS TUBULAR INNER FILM PLY WITH THE FREE EDGES OF THE SHEETING OPPOSITE SAID CENTER-FOLD HEAT SEALED IN JUXTAPOSITION WITH THE OTHER FLATTENED EDGE OF SAID INNER SEAMLESS TUBULAR FILM PLY, ONE END OF THE COEXTENSIVE INNER AND OUTER PLIES TRANSVERSELY HEAT SEALED TOGETHER ACROSS THE WIDTH OF THE MULTI-PLLY LINER BAG AND THE OTHER END OF THE COEXTENSIVE INNER AND OUTER FILM FLIES TRANSVERSELY HEAT SEALED TOGETHER SO AS TO LEAVE A GAP IN ONE CORNER OF SAID MULTI-PLY LINER BAG OTHER END, AND A SPOUT OPEN TO THE INTERIOR OF SAID SEAMLESS TUBULAR INNER FILM PLY AND IN SAID GAP, THEREBY PROVIDING A LEAKPROOF HEAT SEALED MULTI-PLY LINER BAG, THE INNER POLYOLEFIN FILM PLY BEING CHARACTERIZED BY BEING RESISTANT TO ENVIRONMENTAL STRESS CORROSION AND FLEX FATIGUE, AND THE OUTER POLYOLEFIN FILM PLY BEING CHARACTERIZED BY BEING RESISTANT TO PUNCTURE AND ABRASION.
Claim 2
Dependent Claim
200 words
A FLEXIBLE, LEAKPROOF, COLLAPSIBLE, MULTI-PLY LINER BAG FOR PERISHABLE MATERIAL SUCH AS MILK AND THE LIKE, COMPRISING AN INNER PLY OF FLATTENED SEAMLESS TUBULAR POLYOLEFIN FILM INTERIORLY ESSENTIALLY STERILE, AND A CONCENTRIC COEXTENSIVE OUTER PLY OF CENTER-FOLDED POLYOLEFIN SHEETING CIRCUMSCRIBED ABOUT SAID INNER PLY, SAID CENTER-FOLD OF THE SHEETING BEING JUXTAPOSED ALONG ONE FLATTENED EDGE OF SAID SEAMLESS TUBULAR INNER FILM PLY WITH THE FREE EDGES OF THE SHEETING OPPOSITE SAID CENTER-FOLD HEAT SEALED IN JUXTAPOSITION WITH THE OTHER FLATTENED EDGE OF SAID INNER SEAMLESS TUBULAR FILM PLY, ONE END OF THE COEXTENSIVE INNER AND OUTER PLIES TRANSVERSELY HEAT SEALED TOGETHER ACROSS THE WIDTH OF THE MULTI-PLLY LINER BAG AND THE OTHER END OF THE COEXTENSIVE INNER AND OUTER FILM FLIES TRANSVERSELY HEAT SEALED TOGETHER SO AS TO LEAVE A GAP IN ONE CORNER OF SAID MULTI-PLY LINER BAG OTHER END, AND A SPOUT OPEN TO THE INTERIOR OF SAID SEAMLESS TUBULAR INNER FILM PLY AND IN SAID GAP, THEREBY PROVIDING A LEAKPROOF HEAT SEALED MULTI-PLY LINER BAG, THE INNER POLYOLEFIN FILM PLY BEING CHARACTERIZED BY BEING RESISTANT TO ENVIRONMENTAL STRESS CORROSION AND FLEX FATIGUE, AND THE OUTER POLYOLEFIN FILM PLY BEING CHARACTERIZED BY BEING RESISTANT TO PUNCTURE AND ABRASION.
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) | 1967-02-24 | 1967-08-26 | 1968-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-24 | 1971-08-26 | 1972-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-24 | 1975-08-26 | 1976-02-25 | $7700.00 | Window Closed / Lapsed |