Patent ID: 9586231
Date: 2017-03-07
CPC Classifications: B05D

Claim:
1. A method for coating a substrate, comprising: a. providing a substrate, having a first surface and a second surface, wherein said first surface and said second surface are separated by a thickness of said substrate; b. said first surface having an original surface area; c. providing a plurality of apertures connecting said first surface to said second surface, wherein the presence of said plurality of apertures reduces said original surface area to a net surface area; d. said net surface area being at least fifty percent of said original surface area; e. providing a polymer having a melting temperature, wherein said polymer is capable of transitioning from a liquid state to a solid state; f. heating said substrate above said melting temperature of said polymer; g. spraying said polymer onto said second surface; h. spraying said polymer onto said first surface; i. wherein said heated substrate melts said polymer and some of said liquid polymer on said first surface flows into said apertures and adheres to said polymer on said second surface; and j. allowing said liquid polymer to solidify, so that said polymer on said first surface, said second surface, and in said apertures is linked together as a solid.