Method for producing shaped aluminium sheets with a decorative finish
US7645488B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2004 |
| Grant date | Jan 12, 2010 |
| Priority date | — |
| Expiry date | Jul 1, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D2701/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for producing weather- and corrosion-resistant shaped sheets consisting of aluminum or an aluminum alloy with a decorative finish in a coil coating process that comprises the following sequential steps: an aluminum strip or aluminum alloy strip is provided; optional continuous degreasing of the strip; optional electrochemical, chemical or mechanical burnishing of the optionally degreased strip; the optionally degreased and/or burnished strip is continuously pre-treated to create a pre-treated layer that is suitable for use as an adhesive base for a paint layer; the optionally degreased strip is continuously pre-treated to create a strip surface that is suitable for use as an adhesive base for a paint layer; the pre-treated strip is continuously painted with a sol-gel paint consisting of a polysiloxane to create a first protect protective layer; the first protective layer is continuously dried and cured in a continuous furnace; the sheets are produced by shaping the strip that comprises the first protective layer and cutting the sheets that are optionally to be further shaped, or by cutting the sheets out of the strip that comprises the first protective layer and shaping th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.