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SELF-CLEANING SUBSTRATES AND METHODS FOR MAKING THE SAME

  • US 20110027485A1
  • Filed: 09/29/2009
  • Published: 02/03/2011
  • Est. Priority Date: 08/03/2009
  • Status: Active Grant
First Claim
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1. A method comprising:

  • (a) first producing a colored aluminum sheet product having a predetermined color and a predetermined gloss, the first producing step comprising;

    (i) roll coating a colored coating onto an aluminum alloy sheet; and

    (ii) converting the colored coating into a colored layer, wherein the colored layer is located on an outer surface of the aluminum alloy sheet;

    (b) second producing an intermediate aluminum sheet product, the second producing step comprising;

    (i) roll coating a barrier coating onto at least a portion of the colored layer of the colored aluminum sheet product; and

    (ii) converting the barrier coating into a barrier layer, wherein, after the converting step, the barrier layer is located on at least a portion of the colored layer;

    wherein, after the second converting step, the intermediate aluminum sheet product retains the predetermined color and retains the predetermined gloss of the colored aluminum sheet product; and

    (c) third producing a colored self-cleaning aluminum sheet product, the third producing comprising;

    (i) roll coating a self-cleaning coating onto at least a portion of the barrier layer of the intermediate aluminum sheet product; and

    (ii) converting the self-cleaning coating into a self-cleaning layer, wherein, after the converting step, the self-cleaning layer is on at least a portion of the barrier layer;

    wherein, the colored self-cleaning aluminum sheet product retains the predetermined color and retains the predetermined gloss of the colored aluminum sheet product.

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