Holmarc’s dip coating unit is designed to keep operator involvement as minimum as possible so that variables like speed, duration, etc. are regulated accurately by computer control. Movements are achieved by a precision servo motor controlled linear stage.
Dip-coating process includes five stages: immersion, start-up, deposition, evaporation and drainage. Dip coating is done by immersing a substrate into a tank containing the coating material, removing from the tank, and allowing it to drain. The coated piece can then be dried by force-drying or baking. A microprocessor based system along with user friendly software takes care of accurate control throughout the process. Speed, traverse and idling duration can be programmed through a computer. The system is complete with mechanics, substrate holder, electronics and software.
Film formation on dipping is dependent on the viscosity of the fluid. The process is messy and can be highly hazardous. The viscosity of the fluid in the dip tank must remain practically constant for the deposited film quality to be high. Dip coating is well suited for high production coating of relatively simple shapes. Transfer efficiency is very high, all contact areas are coated, equipment requirements are low, and the process can be conveyorized and automated.
The product described here has been developed for a specific research applications. It can be customized to suit related research activities in thin film formation. We welcome customization queries. |
