Polyester-metal laminated sheet and seamless cans using the same
US5753328A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1996 |
| Grant date | May 19, 1998 |
| Priority date | — |
| Expiry date | Oct 21, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31681
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A laminated metal sheet obtained by laminating a polyester film on a metal sheet, wherein the polyester film has a double refraction represented by the following relation, EQU .DELTA.n=n.sub.m -n.sub.t PA1 wherein n.sub.m is a refractive index in the direction of a maximum orientation of the film, and n.sub.t is a refractive index in the direction of thickness of the film, which is higher on the side of the front surface of the polyester film than on the side of the metal sheet, and has a peak in the double refraction in a way of thickness from the side of the front surface toward the side of the metal sheet. A seamless can formed from such a laminated metal sheet exhibits excellent shock resistance, flavor-retaining property, corrosion resistance and like properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.