Holmarc’s Dip Coating Unit has been designed in such a manner which minimizes the operator’s effort. The variables like speed, duration, etc. are maintained accurately by computer control. Dip-coating process, includes five stages: immersion, start-up, deposition, evaporation and drainage. The coating thickness depends on various parameters like viscosity of the coating solution, immersion time, withdrawal speed, evaporation rate etc.
Movements are achieved by a precision servo motor controlled linear stage. Adjustable stroke length and accurate speed control are the exceptional features of this model along with its capability of achieving a uniform coating. This is a compact, bench-top coating unit having structural rigidity and is free from vibrations.
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. Both manual mode and PC mode are possible in this equipment. In manual mode a user friendly front panel with keyboard and LCD display is provided to enter all the dipping and drying parameters where as in PC mode entire unit can be controlled by user friendly software.
It can store up to 5 programs in manual mode, which are editable during the operation. The system is complete with its mechanics, electronics and software. Customization can be done in order to suit the developing needs of the user.
|Drive mechanism||:||Lead screw|
|Power input||:||230V, 50Hz|
|PC connectivity||:||Serial port (RS 232)|
|Stroke length max.||:||200 mm|
|Drawing speed min.||:||18 micron / sec|
|Drawing speed max.||:||9000 micron / sec|
|Maximum substrate size||:||100 mm x 150 mm x 20 mm (W x H x T)|
|Weight (appx.)||:||54 Kg|
Film formation in dipping is dependent on the viscosity of the fluid. The process is messy and can be highly hazardous. The viscosity of the fluid in a dip tank must remain practically constant if the deposited film quality is to remain 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 shown (HO-TH-01B) here has been developed for specific research applications. It can be customized to suit related research activities in thin film formation. We welcome customization queries. 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.