Preparing the base substrate for coating and the coating process
Simtal Ltd. has vast knowledge and knowhow in cleaning circuit boards and other devices made of a variety of materials. They also make sure to always remain updated regarding the latest cleaning techniques.
Perylene is an inert product. In order for it to adhere to a device, a variety of processes have been developed over the years to improve adhesion. These processes are usually run on the infrastructure, either by immersion in an alcoholic detergent mixed with materials that improve adhesion, or by making changes to the surface of the infrastructure. Other methods, exclusive to Simtal, may be applied depending on the infrastructure.
The completion of the cleansing process brings the infrastructure to the next stage of treatment – the masking station: the remarkable penetrability of Parylene during the coating process enables the highest level of coating – while the areas that should not be coated must be carefully masked. Simtal has over 3400 different masking materials (adhesives, silicones, masking tapes, bolt caps and more) suited for masking various infrastructures of a variety of materials and complex architectures. Simtal’s advantage is in its accumulated expertise and knowhow of the most effective and reliable masking techniques and materials.
Jigging - Occupancy and Mounting
Once the masking is complete, we reach the occupancy stage (‘Jigging’) using a carrier - in applications where much importance is placed on the amount of infrastructure coated in each run (batch) – correct occupancy can significantly reduce costs.
Performed at ambient temperatures after priming, the dimer (raw material) is cracked into a monomer and fed at a rate that polymerizes (the actual coating) between a quarters to 5 microns an hour. All controlled by the developer / operator.
Dismantling the mounted substrates and removing the masking
At the end of the coating process the various masking materials are removed in order to expose the "no coating needed areas". Simtal has developed various methods to accurately remove masks, preventing any damage to the components.
Final testing of the coating quality is one of the foundation blocks of the coating process. This part of the process changes according the different parameters used during the coating run; as its range of characteristics allow the coated product to be used or applied in ways, which would not have been possible with other conformal coatings. This makes the Parylene coating into an integral part of the chemical and mechanical infrastructure, rather than a simple protective coating.
ALL ABOUT PARYLENE