US3834606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packaging trays and methods of making them
Assignee: TORSTEN JEPPSSON AB
•
Filing: 1972-04-06
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Granted: 1974-09-10
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Expires: 1992-04-06
Abstract
Abstract A packaging tray provided with a bottom, side walls, and an outwardly directed flange surrounding the periphery of the side walls of the tray, consists of outer and inner layers of a moldable and stretchable synthetic plastic material, and intermediate layers of liquid-absorbing material with no or but insignificant stretchability. At the molding of the tray, the side walls thereof are formed by stretching of the plastic material and in a softening operation, an adhesive bond is realized between the outer and inner layers of the stretched tray side walls which thus present an at least partially or substantially completely ruptured intermediate layer.
Inventors
- 👤 S Andersson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 22:50
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/24; B65D81/26; B65D81/264; B65D1/00; B65D1/34; B65D81/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A packaging tray formed of a multi-layered wall material including an intermediate layer of a substantially nonstretchable liquid-absorbing material and, on each side of said intermediate layer, one outer layer of a synthetic plastic material which is moldable and stretchable when heat softened, said packaging tray having a bottom, side walls formed by molding and stretching said multi-layered wall material, and a flange extending outwardly from side walls around the periphery of the tray, said side walls having an offset extending around the tray and being substantially plane parallel with the bottom of the tray, said intermediate layer of liquid-absorbing material being at least partially ruptured in the area of said offset of said side walls, and said outer layers of synthetic plastic material being joined with each other in the area of said offset of said side walls, said multi-layered wall material having its tray inside forming outer layer of synthetic plastic material perforated at least within the bottom area of the tray.
Claim 2
Dependent Claim
164 words
A packaging tray formed of a multi-layered wall material including an intermediate layer of a substantially nonstretchable liquid-absorbing material and, on each side of said intermediate layer, one outer layer of a synthetic plastic material which is moldable and stretchable when heat softened, said packaging tray having a bottom, side walls formed by molding and stretching said multi-layered wall material, and a flange extending outwardly from side walls around the periphery of the tray, said side walls having an offset extending around the tray and being substantially plane parallel with the bottom of the tray, said intermediate layer of liquid-absorbing material being at least partially ruptured in the area of said offset of said side walls, and said outer layers of synthetic plastic material being joined with each other in the area of said offset of said side walls, said multi-layered wall material having its tray inside forming outer layer of synthetic plastic material perforated at least within the bottom area of the tray.
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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) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |