US3140215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for sealing cartons
Assignee: Weyerhaeuser Co
•
Filing: 1959-12-16
•
Granted: 1964-07-07
•
Expires: 1979-12-16
Abstract
No abstract record available.
Inventors
- 👤 Theron W Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:29
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/10; D21H19/14; D21H19/18; B; B65; B65D; B65D5/00; B65D5/42; B65D5/56; B65D5/563; B65D65/00; B65D65/38; B65D65/40; C; C09; C09J; C09J131/00; C09J131/02; C09J131/04; C08; C08L; C08L2666/00; C08L2666/28; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1036; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24826
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
THE METHOD COMPRISING CONVERTING A FIBERBOARD SHEET TO A CARTON TO BE CLOSED AND SEALED BY FLAPS AT A CARTON OPENING, SAID FIBERBOARD HAVING A PH IN THE RANGE OF FROM ABOUT 5.2 TO ABOUT 5.7 AND HAVING AN ABSORPTIVE BODY, AND SAID CARTON HAVING FLAPS WITH FACES IN WHICH FIBERS ARE EXPOSED COATING THE ENTIRE CARTON WITH A HYDROPHOBIC COAT OF NORMALLY SOLID FUSIBLE MOISTURE-BARRIER MATERIAL HAVING A MELTING POINT AT AN ELEVATED TEMPERATURE BELOW THE BOILING POINT OF WATER, APPLYING AN AQUEOUS ADHESIVE COMPOSITION ACTIVATABLE TO ADHESIVENESS BY LOSS OF WATER THEREFROM TO SAID FLAPS WHEREBY SAID ADHESIVE COMPOSITION WILL FORM AN INTERFACE BETWEEN PAIRS OF SAID FLAPS WHEN SAID FLAPS ARE CLOSED, CLOSING SAID FLAPS TO SEALING POSITION, HEATING THE SO-POSITIONED FLAPS BY APPLYING HEAT AT A TEMPERATURE ABOVE THE BOILING POINT OF WATER AND THEREBY MELTING AND ABSORBING SUBSTANTIALLY ALL OF THE MOISTURE-BARRIER MATERIAL AND EXPOSING FIBERS OF THE FLAPS TO THE INTERFACIAL AQUEOUS ADHESIVE MATERIAL, AND THEREBY REMOVING WATER FROM THE ADHESIVE MATERIAL AND BONDING FLAP-TO-FLAP BY A FIBER-TO-FIBER BOND.
Claim 2
Independent Claim
175 words
THE METHOD COMPRISING CONVERTING A FIBERBOARD SHEET TO A CARTON TO BE CLOSED AND SEALED BY FLAPS AT A CARTON OPENING, SAID FIBERBOARD HAVING A PH IN THE RANGE OF FROM ABOUT 5.2 TO ABOUT 5.7 AND HAVING AN ABSORPTIVE BODY, AND SAID CARTON HAVING FLAPS WITH FACES IN WHICH FIBERS ARE EXPOSED COATING THE ENTIRE CARTON WITH A HYDROPHOBIC COAT OF NORMALLY SOLID FUSIBLE MOISTURE-BARRIER MATERIAL HAVING A MELTING POINT AT AN ELEVATED TEMPERATURE BELOW THE BOILING POINT OF WATER, APPLYING AN AQUEOUS ADHESIVE COMPOSITION ACTIVATABLE TO ADHESIVENESS BY LOSS OF WATER THEREFROM TO SAID FLAPS WHEREBY SAID ADHESIVE COMPOSITION WILL FORM AN INTERFACE BETWEEN PAIRS OF SAID FLAPS WHEN SAID FLAPS ARE CLOSED, CLOSING SAID FLAPS TO SEALING POSITION, HEATING THE SO-POSITIONED FLAPS BY APPLYING HEAT AT A TEMPERATURE ABOVE THE BOILING POINT OF WATER AND THEREBY MELTING AND ABSORBING SUBSTANTIALLY ALL OF THE MOISTURE-BARRIER MATERIAL AND EXPOSING FIBERS OF THE FLAPS TO THE INTERFACIAL AQUEOUS ADHESIVE MATERIAL, AND THEREBY REMOVING WATER FROM THE ADHESIVE MATERIAL AND BONDING FLAP-TO-FLAP BY A FIBER-TO-FIBER BOND.
References Cited (Backward Citations)
US1451145A
Cited
US1408746A
Cited
US2099301A
Cited
US2031035A
Cited
US2362373A
Cited
US2341845A
Cited
US2341379A
Cited
US2470465A
Cited
US2824013A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |