Tray with compound sealed lid
US4469258A · kind A · utility
41Cited by
17References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1982 |
| Grant date | Sep 4, 1984 |
| Priority date | — |
| Expiry date | Aug 6, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2577/205
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A tray is formed from coated paperboard or plastic and is provided with a top peripheral flange onto which a tray lid is sealed. The tray lid includes an inner membrane member which is secured to the tray flange by an adhesive coated into the membrane. Also included in the lid is an outer paperboard member which is adhesively secured to the membrane and tray flange. The outer lid member can be peeled off of the membrane without the membrane releasing from the tray flange. The membrane can then be peeled off of the tray flange to open the tray. A method for forming the sealed trays is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.