Vessel lid comprising laminated material
US5112695A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 1991 |
| Grant date | May 12, 1992 |
| Priority date | — |
| Expiry date | May 20, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
For the easily openable metal vessel lids openable by severing the scope with the aid of an opening piece, the formation of pinholes and/or cracks can be prevented, the corrosion resistance of the vessel lids as a whole (including the scored part) is improved, and the openability can be markedly improved by lessening the force required to open the vessel lids and, furthermore, feathering can be prevented by limiting the X-ray diffraction intensity ratio of the biaxially drawn polyester film provided onto at least the interior side of the vessel to within the range of from 4 to 17 and also by limiting the anisotropy index of in-plane crystal orientation to 30 or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.