Two-piece can, method for manufacturing same, and steel sheet therefor
US8074483B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2006 |
| Grant date | Dec 13, 2011 |
| Priority date | — |
| Expiry date | Apr 16, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B27/36
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
We manufacture a two-piece can by the method using a laminated steel sheet as the base material, having the steps of: drawing a cylindrical blank for several times to form a can body in a shape of cylinder integrated with bottom; forming a tapered part extending outward from the can body in the radial direction thereof at the tip of the opening of the can body; applying diametral reduction to the tapered part to the diameter of the can body; and applying diametral reduction to the opening side of the can body to a diameter smaller than the diameter of the can body, while satisfying the formulae (1) and (2),1.5≦h/(R−R) (1)d/R≦0.25 (2)where h is the height from the can bottom to the tip of the opening, R is the circular blank positional radius, r is the radius of the can bottom, and d is the radius of the tip of the opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.