Conformal Coating Machines

What is a Conformal Coating Machine?

A PCB conformal coating machine is an equipment that is used to apply conformal coatings onto PCBs to protect the board and its components from corrosion and environmental contaminants. These machines can be used to selectively or fully coat the printed circuit board. Using this machine is a more expensive method to coat a PCB compared to other coating methods like hand coating and dip coating.

In a PCB conformal coating machine, the coating is done using a coating arm equipped with a needle and an atomized or non-atomized spray applicator or using ultrasonic valve technology. The arm can move above the PCB in fixed directions and dispense/spray the coating material in select areas. The desired thickness is obtained by controlling the flow rate of the applicator. This method is ideal for high-volume PCB coating. However, it has some limitations similar to other coating methods, such as capillary effects. In capillary effects, the coating pulls or runs away from certain areas of a PCB and results in a patchy finish on the surface of the board. 

Key Parameters of a conformal coating machine: 

• Number of Valves: It is the number of dispensing valves the machine has.
• X, Y Travelling Speed: It is the travelling speed of the applicator in the X, Y direction, usually represented in mm/sec. 
• Z-Axis Movement: It is the vertical speed of the applicator 
• Maximum Coating area: It is the maximum area that can be covered by the machine. 
• Air supply pressure: It is the pressure at which the air is supplied to the machine for dispensing/spraying purposes in the coating process. 

PCB Directory has listed conformal coating machines from the leading manufacturers in the industry and made it easy for users to find these machines based on their requirements. You can specify the number of valves to find coating equipment that meets your requirements. You can also view machine specifications, download the spec sheet, and get a quote. Quotes requested are routed to manufacturers.

Click here to explore Conformal Coating Machine Manufacturers.