Curtain

How it works: Flat metal blanks are placed on a conveyor belt which carries them through a thin, descending "curtain" of coating onto another coater belt to be carried away for curing. Coating that does not fall on the metal falls through an opening into a trough and is pumped back into the curtain process.

Uses

Promotional, opening-price-point and moderate market levels. Cookware: Interiors and exteriors. Bakeware. Small Electronics. Advantages

Speed: This system can coat from 3,000 to 4,000 pieces per hour. Minimum personnel required. Virtually no waste: Since the small amount of unused coating is cycled back into the system, this method wastes less coating than any other. Aesthetics: The only non-spray process that imparts a smooth, glossy finish, with no track marks. Flexibility: Disks can be as thin or as thick as specifications require. Disadvantages

Potential coating problems: Conventional coating formulae do not work in the curtain coater. However changes Whitford has made to its coatings have improved their performance in curtain coating application. Waste: Coated scrap has little value. Specialized equipment is required.
 
PKN
Coating Curriculum Product knowledge Miscellaneous Information
 
 
 
 
 
Application Methods

Curtain - Application Method

Curtain

How it works: Flat metal blanks are placed on a conveyor belt which carries them through a thin, descending "curtain" of coating onto another coater belt to be carried away for curing. Coating that does not fall on the metal falls through an opening into a trough and is pumped back into the curtain process.

Uses

  • Promotional, opening-price-point and moderate market levels.
  • Cookware: Interiors and exteriors.
  • Bakeware.
  • Small Electronics.

Advantages

  • Speed: This system can coat from 3,000 to 4,000 pieces per hour.
  • Minimum personnel required.
  • Virtually no waste: Since the small amount of unused coating is cycled back into the system, this method wastes less coating than any other.
  • Aesthetics: The only non-spray process that imparts a smooth, glossy finish, with no track marks.
  • Flexibility: Disks can be as thin or as thick as specifications require.

Disadvantages

  • Potential coating problems: Conventional coating formulae do not work in the curtain coater. However changes Whitford has made to its coatings have improved their performance in curtain coating application.
  • Waste: Coated scrap has little value.
  • Specialized equipment is required.

 

 
 
Sponsored By Whitford