Abstract:
A dip coating apparatus includes a sealed case assembly for containing at least one workpiece to be coated; an air pump communicated with the sealed case assembly, for pumping air from the sealed case assembly and injecting air into the sealed case assembly; and a coating solution container containing a coating solution and communicated with the sealed case assembly, for injecting the coating solution to the sealed case assembly and retrieving the coating solution from the sealed case assembly.
Abstract:
A process for improving surface properties of a material comprises irradiating the material with ultraviolet rays in vacuo or in an inert gas atmosphere to destroy atom-to-atom bonds of predetermined surface groups and remove specific atoms, and reacting the activated surface with radicals of a reactive gas or coating agent activated by irradiation with ultraviolet rays or laser beams to thereby produce new surface groups and modify the surface properties according to a particular purpose. An apparatus for conducting this process comprises a closed vessel (1) having an ultraviolet ray discharge tube (2) provided therein and an inert gas feed pipe (6), a reactive gas feed pipe (7) and a degassing apparatus (F) connected thereto to make the inside selectively vacuum or an atmosphere of inert gas or reactive gas.
Abstract:
The lower side of the part to be processed is secured on a frame (14) by suction. This suction is obtained by means of a gaz flowing through at least a Venturi nozzle (22) of the frame (14). The gaz flowing through the nozzle or nozzles (22) impinges on the lower side of the part (10) and is deviated therefrom towards the periphery (32). The flow draws externally the processing liquid droplets remaining on the periphery (32) of the part (10). The installation according to the invention thereby serves a double function: on the one hand it keeps the part (10) on the frame (14) by suction, and on the other hand it removes the residual droplets flowing from the upper side of part (10) towards the lower side.