Automated air filtration and drying system for waterborne paint and industrial coatings

  • US 5,709,038 A
  • Filed: 03/29/1996
  • Issued: 01/20/1998
  • Est. Priority Date: 09/24/1993
  • Status: Expired due to Fees
First Claim
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1. A method for drying an aqueous-based paint that was applied onto a substrate at a surface thickness of from about 0.1 to about 15 mils to provide a substrate having a substantially tack-free painted surface capable of resisting the formation of surface flaws, which method comprises,(1) flowing air substantially uniformly in an angular and/or parallel direction and at surface velocity of at least 10 feet per minute over the painted substrate surface, while maintaining the painted substrate in a drying environment having an RH in the range of about 25 to about 95 percent, and a temperature in the range of about 45 F. to about 125 F., and(2) continuing the procedure of step (1) in a continuous or batch mode until the painted substrate surface is tack-free and blemish-free after normal handling procedures.

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