Product category: Electronics Manufacturing Machinery and Materials
News Release from: Dima SMT Systems NL | Subject: Selective conformal coating systems
Edited by the Electronicstalk Editorial Team on 31 October 2005
Conformal coating comes up to date
Dima has developed a complete new range of selective conformal coating systems
Corrosion of electronics has to be considered as a realistic threat as result of the development of complex components with closer spacing. With such close spacing extremely low levels of corrosive contaminants can lead to failure. However coating an electronic assembly can protect the product against corrosion.
This article was originally published on Electronicstalk on 31 October 2005 at 8.00am (UK)
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In the past coating of PCBs was mainly used in high-tech application, but because of the increasing demand of electronic components in all kind of today's equipment, the advantage of coating PCBs has become very obvious.
A coated PCB is protected against environmental influences and protects the components against chemicals, moisture, corrosion and mechanical load.
Coating a PCB can be done in many different ways.
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Valve sprays conformal coatings more evenly
Dima has developed a novel spray valve that enables users to spray any available coating material more accurately and repeatedly without any overspray or mist
Many companies still use the 'old fashion ways' of coating like dip coating, manually spraying and even a pencil or paintbrush.
These ways of coating a PCB are not considered to be very consisted, reliable, cost effective or environmental friendly.
Now Dima has developed a complete new range of selective conformal coating systems.
These systems range from a complete set of dispensing valves up to motion systems that will provide the most consistent, reliable and cost effective way to coat a PCB.
There are different dispense valves for low-, medium- and high viscosity fluids.
Furthermore Dima developed an unique spray valve.
The extended spray nozzle of this valve has a very slim design that will enable spraying in between high components.
All Dima valves are fully air actuated providing the best possible dispense on/off control.
The Dima dispense valves can easily be integrated into the Dima motion systems.
The valve controls are integrated into the Dima motion systems, or can be ordered separately.
The range of motion systems start with a bench top solution, but also consists of stand-alone or fully Smema compatible inline machine.
All the Dima motion systems are used with a camera for easy programming.
Compared with many systems in today's market an operator doesn't have to stick its head inside the machine to create a program.
He can literally turn his back to the machine while programming it.
The Dima motion systems will have dedicated software that will enable any operator to easily determine areas for coating and areas that should stay protected from coating.
Depending on the type of motion system Dima will have several option available.
Among these options are: a fourth and fifth motion axis for dispensing in corners and underneath components, the possibility to mount up to four different dispensing valves per machine, an automatic fiducial recognition and correction system, an automatic needle height and x-y-offset detection system and offline programming software.
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