US3309835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing packages with a heat-shrink film
Assignee: Smurfit Diamond Packaging Corp
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Filing: 1964-01-23
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Granted: 1967-03-21
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Expires: 1984-01-23
Abstract
No abstract record available.
Inventors
- 👤 William S Peppler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:35
CPC Classifications
B; B65; B65B; B65B53/00; B65B53/02; B65B53/06; B65B53/063
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
215 words
THE METHOD FOR PRODUCING A PACKAGE COMPRISING A PERIPHERALLY FLANGED TRAY, A PRODUCT THEREIN, AND A TENSIONED HEAT-SHRUNK FILM WRAPPER CIRCUMPOSED THEREABOUT AND INCLUDING WRAPPER SEALS DISPOSED BENEATH THE PERIPHERAL FLANGE OF THE TRAY, COMPRISING THE STEPS OF: (A) CIRCUMPOSING A LOOSE, HEAT-SHRINKABLE WRAPPER ABOUT A PERIPHERALLY FLANGED TRAY FILLED WITH A PRODUCT AND ORIENTING SEALS OF SAID LOOSE WRAPPER IN A POSITION BELOW A PLANE PASSING THROUGH THE PERIPHERAL FLANGE OF SAID TRAY; (B) CONTINUOUSLY CONVEYING SAID TRAY AND WRAPPER THEREABOUT THROUGH A PREDETERMINED PATH OF TRAVEL WITHIN AN ENCLOSING TUNNEL; (C) DIRECTING A BLAST OF HOT AIR, WHILE SAID TRAY AND WRAPPER ARE CONVEYED, ONLY FROM BENEATH SAID TRAY AND CONVEYOR AND UPWARDLY TOWARD THE UNDER SURFACE OF SAID TRAY AND WRAPPER WHILE LEAVING THE UPPER SURFACE OF SAID TRAY AND WRAPPER EXPOSED, AND SHRINKING SAID WRAPPER SO THAT THE WRAPPER SEALS ARE DISPOSED WITHIN AN AREA SPACED FROM AND INWARDLY BELOW SAID TRAY PERIPHERAL FLANGE; AND (D) DIRECTING A BLAST OF HOT AIR SIMULTANEOUSLY ONLY TOWARD THE UPPER AND LOWER SURFACES OF SAID TRAY AND WRAPPER WHILE SAID TRAY AND WRAPPER ARE BEING CONVEYED WHEREBY SAID WRAPPER IS FINALLY SHRUNK AND SAID WRAPPER IS FORMED WITHOUT EXCESSIVE TENSION BEING IMPOSED ON SAID WRAPPER SEALS AND ACCORDINGLY INHIBITING RUPTURE OF SAID WRAPPER SEALS.
Claim 2
Independent Claim
215 words
THE METHOD FOR PRODUCING A PACKAGE COMPRISING A PERIPHERALLY FLANGED TRAY, A PRODUCT THEREIN, AND A TENSIONED HEAT-SHRUNK FILM WRAPPER CIRCUMPOSED THEREABOUT AND INCLUDING WRAPPER SEALS DISPOSED BENEATH THE PERIPHERAL FLANGE OF THE TRAY, COMPRISING THE STEPS OF: (A) CIRCUMPOSING A LOOSE, HEAT-SHRINKABLE WRAPPER ABOUT A PERIPHERALLY FLANGED TRAY FILLED WITH A PRODUCT AND ORIENTING SEALS OF SAID LOOSE WRAPPER IN A POSITION BELOW A PLANE PASSING THROUGH THE PERIPHERAL FLANGE OF SAID TRAY; (B) CONTINUOUSLY CONVEYING SAID TRAY AND WRAPPER THEREABOUT THROUGH A PREDETERMINED PATH OF TRAVEL WITHIN AN ENCLOSING TUNNEL; (C) DIRECTING A BLAST OF HOT AIR, WHILE SAID TRAY AND WRAPPER ARE CONVEYED, ONLY FROM BENEATH SAID TRAY AND CONVEYOR AND UPWARDLY TOWARD THE UNDER SURFACE OF SAID TRAY AND WRAPPER WHILE LEAVING THE UPPER SURFACE OF SAID TRAY AND WRAPPER EXPOSED, AND SHRINKING SAID WRAPPER SO THAT THE WRAPPER SEALS ARE DISPOSED WITHIN AN AREA SPACED FROM AND INWARDLY BELOW SAID TRAY PERIPHERAL FLANGE; AND (D) DIRECTING A BLAST OF HOT AIR SIMULTANEOUSLY ONLY TOWARD THE UPPER AND LOWER SURFACES OF SAID TRAY AND WRAPPER WHILE SAID TRAY AND WRAPPER ARE BEING CONVEYED WHEREBY SAID WRAPPER IS FINALLY SHRUNK AND SAID WRAPPER IS FORMED WITHOUT EXCESSIVE TENSION BEING IMPOSED ON SAID WRAPPER SEALS AND ACCORDINGLY INHIBITING RUPTURE OF SAID WRAPPER SEALS.
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) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |