Process for stripping off an adhered-on coating and device for carrying out the process
AssigneeHenkel Kommanditgesellschaft auf Aktien
InventorsJosef T. Hein, Herbert Dittmar
Life of this patent
Estimating the term…
Abstract
Heavy wall, ceiling and floor coverings with closed surfaces can be pulled or pushed off relatively easily if the material connecting the coating with the substrate in an adhesive joint can at least be loosened with the aid of a stripping fluid. In accordance with the invention, a stripping fluid is pressed in an air-free, pulse-like way with the aid of a needle nozzle (1) through the coating with a high pressure into the adhesive joint (FIG. 1).
Claims9
A process for removing the coating from a composite comprising a coating, a substrate and an adhesive therebetween comprising injecting pulses of substantially air-free stripping fluid under pressure and through a needle nozzle zone into the adhesive to soften or decompose the adhesive, prior to attempting removal of said coating and thereafter removing said coating from the substrate.
Device for injecting pulses of stripping fluid under pressure into an adhesive between a coating and substrate which comprises a needle nozzle having a nozzle opening removably joinable to a pressure line for the stripping fluid by pressing said needle nozzle against the coating to be removed, and said pressure line being connected to a pressure pump.
Dependencies are inferred from the claim text.