Coated metal structure and process for production thereof
US4143790A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Nov 22, 1976 |
| Grant date | Mar 13, 1979 |
| Priority date | — |
| Expiry date | Nov 22, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31681
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
In a coated metal structure comprising a metal substrate and a coating layer of a thermoplastic polyester resin heat-bonded to the metal surface, the polyester resin has a relative viscosity of 1.2 to 1.8 as measured at 25.degree. C. in o-chlorophenol at a concentration of 0.5 g/100 ml and the tack point of the polyester resin is not lower than 130.degree. C. and the degree of crystallinity of the polyester resin is up to 30%. This structure has improved peel resistance and is excellent in mechanical and chemical properties, especially adaptability to shaping processing and corrosion resistance. This structure can easily be formed into various vessels and containers and closure means of vessels and containers by such processing as drawing and ironing. This structure provides shaped articles excellent in peel resistance, corrosion resistance and processability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.