Patent US3686823A successfully refreshed from Google Patents.
US3686823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for packaging articles
Assignee: Vac Pac Manufacturing Co Inc
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Filing: 1970-04-09
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Granted: 1972-08-29
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Expires: 1990-04-09
Abstract
Abstract An improved method of adhering the bottom of polyalkylene terephthalate film bags, such as those used to shrink package frozen turkeys, is disclosed. The bags are adhered on at least one side with two distinct adhesive bands. The inner band is a thermoplastic adhesive which allows a measure of ''''peelability and shock absorbability'''', whereas the outer adhesive band is a high strength thermo-setting adhesive. The contained product may even be cooked within the bag.
Inventors
- 👤 Sol J Perlman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:34
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/34; B65D31/00; B65D33/00; B65D33/16; B65D33/18; B65D33/22
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
18 words
The process as claimed in claim 1, wherein at least the bottom of said film bag is adhered.
Claim 2
Dependent Claim
15 words
The process as claimed in claim 2, wherein said polyalkylene terephthalate film in polyethylene terephthalate.
Claim 3
Dependent Claim
18 words
The process as claimed in claim 3, wherein each adhesive band is at least about one-eighth inch wide.
Claim 4
Dependent Claim
16 words
The process as claimed in claim 4, wherein each adhesive band is about three-eighths inch wide.
Claim 5
Dependent Claim
15 words
The process as claimed in claim 4, wherein said adhesive bands are in adjacent position.
Claim 6
Dependent Claim
22 words
The process as claimed in claim 3, wherein said thermoplastic polyalkylene terephthalate film adhesive is a thermoplastic polyester or a polyamide adhesive.
Claim 7
Dependent Claim
21 words
The process as claimed in claim 3, wherein said thermosetting polyalkylene terephthalate film adhesive is a thermosetting polyester or polyurethane adhesive.
Claim 8
Dependent Claim
26 words
The process as claimed in claim 2, including the additional steps of vacuum evacuating the filled bag prior to shrinking the bag upon the contained item.
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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |