Patent ID: 8197628
Filing Date: 2012-06-12
Classification: B05D,Y10T

Abstract:
1. A method for protection of running surfaces of an elevator guide rail against corrosion, comprising the steps of: applying a moisture impermeable, corrosion protection foil to a running surface of the elevator guide rail to be protected, the corrosion protection foil exhibiting adhesive bonding with the running surface, whereby a blocking effect between the running surface and the corrosion protection foil results; and applying a self-sealing, semi-solid protection layer which at least partly covers the corrosion protection foil, wherein the protection layer forms a closed film and at least one of the corrosion protection foil and the protection layer include hydrophobically acting components that at least one of prevent moisture from penetrating to the running surface of the elevator guide rail to be protected and displace moisture which is present, wherein the protection layer includes a thixotropic agent in an amount sufficient to set the protection layer in a plastic state, and cause the protection layer to behave as a viscous liquid when agitated or processed, the thixotropic agent thereby protecting against damage by causing the protection layer to automatically close after a local mechanical disturbance of the protection layer, wherein at least one of the corrosion protection foil and the semi-solid protection layer includes one or more pH buffer agents that keep the blank surface at a pH value set in a range of between 8 and 13 at which the blank surface is passive relative to corrosion.