US3642679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating for multi-wall bags
Assignee: Georgia-Pacific LLC
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Filing: 1968-11-18
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Granted: 1972-02-15
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Expires: 1988-11-18
Abstract
Abstract MULTI-WALL BAGS ARE SRUFACE COATED WITH STRIPS OF "HOT MELT" COATING FOR FRICTION CONTROL. THE COATING BECOMES ADHESIVE AND COHESIVE WHEN SUBJECTED TO EITHER HEAT OR PRESSURE OR BOTH, BUT THE COHESION AND ADHESION DECREASES GREATLY WHEN THERE IS NO PRESSURE. THE AMOUNT PRESENT WHEN THE COATING IS AT NORMAL AMBIENT TEMPERATURES IS DETERMINED BY VARYING THE COMPONENTS IN THE "HOT MELT" COATING COMPOSITION, SO THAT THE DESIRED FRICTION CONTROL IS ACHIEVED. WHILE THE COATING HAS OTHER USES, IT IS PARTICULARLY DESIRABLE FOR PREVENTING THE SLIPPAGE OF MULITWALL BAGS, FOR EXAMPLE OF THE TYPE WHICH ARE FILLED WITH PRODUCTS AND STACKED ON PALLETS FOR STORAGE AND SHIPPING.
Inventors
- 👤 Buck R Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:41
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/0072; C; C08; C08L; C08L45/00; C08L45/02; C09; C09D; C09D123/00; C09D123/02; C09D201/00; D21H19/00; D21H19/10; D21H19/14; D21H19/20; D21H27/00; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/269; Y10T428/31504; Y10T428/31844; Y10T428/31848
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) | 1975-02-14 | 1975-08-16 | 1976-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-14 | 1979-08-16 | 1980-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-14 | 1983-08-16 | 1984-02-15 | $7700.00 | Window Closed / Lapsed |