Welded can and process for preparation thereof
US4477501A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1982 |
| Grant date | Oct 16, 1984 |
| Priority date | — |
| Expiry date | Nov 19, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2826
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Disclosed is a coated welded can having a metal-exposed face inclusive of a seam covered with a coating, wherein the coating comprises at least one organic resin coating layer and at least one metal film, and at least the portion of the organic resin coating that adheres to the metal-exposed face is comprised of a copolymer of ethylene with a carbonyl group-containing, ethylenically unsaturated monomer or a blend containing this copolymer. In this coated welded can, the adhesion of the coating, the corrosion resistance of the seam and the appearance characteristics of the seam are highly improved. Furthermore, the coating of this welded can is not damaged by such processing as flanging, beading or double-seaming or when the welded can is subjected to the retort sterilization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.