Process for production of covered deep-drawn can
US5072605A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1990 |
| Grant date | Dec 17, 1991 |
| Priority date | — |
| Expiry date | Jun 13, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D51/26
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Disclosed is a process for the production of a covered deep-drawn can, which comprises subjecting a metal sheet covered with a thermoplastic resin to drawing and deep-drawing. By heat-treating the formed covered deep-drawn can at a temperature higher than the glass transition point of the thermoplastic resin covering but lower than the melting point of the thermoplastic resin covering, the corrosion resistance, heat resistance and denting resistance of the can are improved, and the adhesion of the resin covering to the metal sheet and the heat resistance of the resin covering to the metal sheet and the heat resistance of the resin covering are improved without degradation of film characteristics inherently possessed by the resin covering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.