Process for the production of a can by wall ironing
US6634203B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 19, 2000 |
| Grant date | Oct 21, 2003 |
| Priority date | — |
| Expiry date | Sep 19, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D22/28
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A process for the production of a can comprising a base and a tubular body from sheet metal which is coated on at least one side with a layer of plastic, in which process, firstly, a round disc is produced from the sheet metal, which disc is then deep-drawn into a cup which is coated at least on the outside with the layer of plastic, after which this cup is formed into a can by wall ironing, the wall ironing taking place in a single stroke by moving the cup successively through a plurality of wall-ironing rings, in which process an optionally metal-coated steel sheet is used as the sheet metal, and in which process the entry angle from each of the successive at lest three wall-ironing rings is smaller than that of the preceding ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.