Laminated metal plate for drawn can, and drawn can prepared therefrom
US5137762A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1990 |
| Grant date | Aug 11, 1992 |
| Priority date | — |
| Expiry date | Sep 18, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31797
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Disclosed is a laminated metal plate for a drawn can, which comprises a laminate comprising a base metal, a layer of a film of a polyester composed mainly of ethylene terephthalate units and, if desried, an adhesive primer layer interposed between the base metal and the polyester film layer, wherein the X-ray diffraction intensity ratio, defined by the following formula (I), of the polyester film layer is in the range of from 0.5 to 15: EQU R.sub.X =I.sub.A /I.sub.B (I) PA1 wherein R.sub.X represents the X-ray diffraction intensity ratio, I.sub.A represents the X-ray diffraction intensity by the diffraction plane parallel to the surface of the polyester film, which has a spacing of about 0.34 nm (CuK.alpha. X-ray diffraction angle is 24.degree. to 28.degree.), and I.sub.B represents the X-ray diffraction intensity by the diffraction plane parallel to the polyester film surface, which has a spacing of about 0.39 nm (CuK.alpha. X-ray diffraction angle is 21.5.degree. to 24.degree. ). and the in-plane anisotropy index of the crystal of the film layer is less than 30. When this laminated metal plate is subjected to the drawing, cracking or formation of pinholes is prevented, and the la…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.