As yet, developments in environmentally unobjectionable lacquers do not achieve the high standard of performance obtained in Europe by the use of epoxy-phenolic linings for food can interiors.In addition, new production methods used by can manufacturers, and the need to save energy, are forcing lacquer producers to develop new coatings with special properties:New sterilisation-resistant organosols offer the possibility of a partial replacement of epoxy-phenolics. A description of their properties is given; preferred applications are on tinplate easy-open ends, DRD cans, tapered containers, and on thin tinplate which has to be beaded. A further benefit, leading to increasing adoption of these new products, is their lower cost.The introduction of welded tinplate cans, desirable for several reasons, is made possible by new seam lacquers. The current development position, including limitations, will be described, and recommendations for improvements in seam coating made. The solution lies not with powder or with lacquer, but with powder and lacquer.The welded food can forces the can manufacturer increasingly to take into account the corrosive nature of individual fillings.
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