Drawn and ironed cans of a metal-plastic construction and their fabrication process
US5782375A · kind A · utility
Inventors
Key dates
| Filing date | Oct 29, 1996 |
| Grant date | Jul 21, 1998 |
| Priority date | — |
| Expiry date | Oct 29, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31692
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The invention concerns drawn and ironed cans and their fabrication process starting from a stratified or laminated metal-plastic construction (1) including a foil of plastic material on which adheres two exterior metal foils and such that the ratio of the thickness of the plastic material to the total thickness of metal is greater than 0.5. The forming of this laminate into a can body (5) includes first of all drawing in one or several steps, then ironing, preferably in four successive passes. The cans are intended in particular to contain beverages. The advantage of the process resides in less cost of primary materials for usage characteristics as good as those of entirely metal cans.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.