Container lid formed as a laminate having a built-in opening feature, container incorporating same, and method for making same
US7703625B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 15, 2006 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Nov 30, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A lid for a container having a built-in opening feature comprises a flexible laminate comprising an upper layer and a lower layer, a pair of radially spaced concentric lines of weakness being formed in the upper and lower layers, respectively, wherein the upper and lower layers in an annular region between the lines of weakness are readily peeled apart, and wherein the upper and lower layers outside the annular region are laminated together with an adhesive providing a bond with a greater peel strength than that required to separate the layers in the annular region. An integral tab is formed in the upper layer by a U-shaped cut line. A distal end of the tab opposite from the two ends of the cut line is within an adhesive-free region of the laminate. The ends of the cut line are in an adhesively laminated area of the laminate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.