Metal Spraying or Metallizing

Plastic Coatings

Metal surfaces that require protection from corrosion might be coated with plastics because of their excellent anti-corrosive characteristics for an extensive variety of corrosive environments. Chemical plant equipment, pipelines, tanks, valve bodies are the common places where protection from corrosive environment is attained by plastic coatings on the metal parts. Plastic coated metals also discover wide application in cans for decorative metal furniture, food-stuffs, water-treatment plants, etc. Generally, the coatings have good resistance to corrosion coupled with good adhesion, high resistance to abrasion, and attractive appearance. The composite character of plastics coatings of metals combines the mechanical properties of metal and protective and other properties of plastics.

Commercially satisfactory coatings are achievable with the following plastics that are basically thermoplastics, that means. having ability to set and harden at high temperature by way of cross-linking.

a.    Plasticized polyvinyl chloride – PVC
b.    Penton
c.    Nylon
d.    Cellulose acetate butyrate – c. a. b.
e.    Polythene
f.    Polytetrafluoro ethylene – p. t. f. e.
g.    Polytrifluoro monochloro ethylene – p. t. f. c. e.