Dip, spray and flow coating process for forming coated articles

C - Chemistry – Metallurgy – 08 – J

Patent

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Details

C08J 7/00 (2006.01) B05D 1/00 (2006.01) B05D 1/36 (2006.01) B65D 3/00 (2006.01) B65D 23/08 (2006.01) C09D 163/00 (2006.01)

Patent

CA 2585020

Thermoplastic resin coated metal, ceramic, and glass articles are made by providing a metal, ceramic, or glass article, applying an aqueous solution, suspension, and/or dispersion of a coating material comprising a first thermoplastic resin to a coated or uncoated surface of the article substrate by dip, spray, or flow coating, withdrawing the article from the dip, spray, or flow coating at a rate so as to form a first coherent film, removing any excess material resulting from the dip, spray, or flow coating, and curing and/or drying the coated article until the first film is substantially dried so as to form a first coating, where the first thermoplastic resin comprises a thermoplastic epoxy resin. Additional coatings of similar or different compositions may be applied onto the first coating in successive iterations of the steps of the inventive process.

Selon l'invention, on fabrique des articles en métal, en céramique et en verre recouverts d'une résine thermoplastique en fournissant un article en métal, en céramique ou en verre, en appliquant une solution aqueuse, une suspension et/ou une dispersion d'une matière de revêtement qui renferme une première résine thermoplastique sur une surface revêtue ou non revêtue du substrat de l'article par le biais d'une application par aspersion, pulvérisation ou immersion, en retirant l'article de ladite application par aspersion, pulvérisation ou immersion à une certaine vitesse de manière à former un premier film cohérent, en éliminant toute matière d'excès qui résulte de l'application par aspersion, pulvérisation ou immersion, et en faisant durcir et/ou sécher l'article revêtu, jusqu'à ce que le premier film soit pratiquement sec afin de constituer un premier revêtement, la première résine thermoplastique contenant une résine époxyde thermoplastique. D'autres revêtements de compositions similaires ou différentes peuvent être appliqués sur le premier revêtement au cours de répétitions successives des étapes du processus de cette invention.

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