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Flux coated brazing sheet

  • US 20040009358A1
  • Filed: 04/21/2003
  • Published: 01/15/2004
  • Est. Priority Date: 04/22/2002
  • Status: Active Grant
First Claim
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1. A method of making a flux-coated aluminum brazing sheet comprising:

  • (a) combining a brazing flux with polyvinyl butyral binder and optionally an organic solvent to form a first mixture;

    (b) shearing said first mixture to form a second mixture having uniformly dispersed brazing flux particles in said second mixture;

    (c) combining said second mixture with an organic solvent to form a brazing flux mixture;

    (d) coating at least a portion of the surface of an aluminum brazing sheet with said brazing flux mixture; and

    (e) drying said brazing flux mixture on said aluminum brazing sheet surface.

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