Patent ID: 9157190
Filing Date: 2015-10-13
Classification: B05D,C23C,D06M,D21H

Abstract:
1. A method for rendering a substrate hydrophobic comprising: providing a feedroll feeding a treatable substrate; moving a portion of the treatable substrate from the feedroll through a first zone divider into an inert gas inlet zone; introducing inert gas into the inert gas inlet zone and producing a positive pressure of the inert gas in the inert gas inlet zone; moving the treatable substrate through a second zone divider, the second zone divider separating the inert gas inlet zone from a treatment zone; moving the treatable substrate into the treatment zone; forming a treated substrate by exposing the treatable substrate to turbulent flow of a vapor with a concentration comprising at least 90% of a halosilane in the treatment zone such that the vapor penetrates the substrate, the halosilane reacting with at last a portion of the treatable substrate to produce HCl; and wherein the temperature of the vapor is maintained above condensation temperature of the halosilane in the treatment zone; and moving the treated substrate through a third zone divider, the third zone divider separating the treatment zone from a neutralization zone; moving the treated substrate into the neutralization zone and exposing at least a portion of the substrate to a basic compound to at least partially neutralize the HCl while at least a portion of the treatable substrate is exposed to the halosilane in the treatment zone; moving the treated substrate into a positive pressure zone coupled to at least one vapor outlet and including an inert gas inlet; flowing inert gas through the inert gas inlet forming a positive pressure of the inert gas within the positive pressure zone and a flow of inert gas with by-products through the at least one vapor outlet; and rolling the treated substrate onto an uptake roll substantially continuously as treatable substrate is fed from the feedroll.