Can components having a metal-plastic-metal structure
US6098829A · kind A · utility
Inventors
Key dates
| Filing date | Aug 26, 1996 |
| Grant date | Aug 8, 2000 |
| Priority date | — |
| Expiry date | Aug 26, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S72/715
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention concerns components of food cans (1), can bodies (6), and ends fabricated starting from a stratified construction constituted by a foil of plastic material on each of the faces of which adheres a metal foil and their fabrication process. The components are characterized by the nature of the material, metal-polymer-metal construction and by the fact that ratio of the plastic thickness to the sum of the metal thicknesses is greater than 0.5. The fabrication process is drawing in one or several passes characterized preferably by the particular shape of the punch and of the die plates. The invention applies equally to the fabrication of food cans as to ends for food cans or for beverage cans.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.