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Nordson's Recent Study Reviews the Effects of Plasma Treatment Prior to Conformal Coating

Published on 2014-06-25. Author : SpecialChem

Nordson MARCH has announced that recent studies have shown that plasma treatment of printed circuit boards prior to conformal coating improves the adhesion of the coatings.

Conformal coating adhesion improved with conformal coating. It has been found that it is often difficult to apply adequate coating to some of the materials that meet strict environmental requirements, such as RoHS. Plasma treatment enhanced surface wettability, improving adhesion of the conformal coating to high-performance solder mask materials and other difficult-to-adhere-to substrates. In addition, the flow characteristics of the conformal coating material improved when the PCB was treated with plasma.

Additional challenges for conformal coating adhesion are contaminants such as mold release compounds and residual flux. Plasma treatment is an effective way to clean the boards in these cases, and plasma removes the contaminants without damaging the substrate.

About Nordson Corporation

Nordson Corporation is one of the world's leading producers of precision dispensing equipment that applies adhesives, sealants, liquid and powder coatings and other materials to a broad range of consumer and industrial products during manufacturing operations. The company also manufactures equipment used in the testing and inspection of electronic components as well as technology-based systems for UV curing and surface treatment processes. Headquartered in Westlake, Ohio, Nordson has direct operations and sales support offices in more than 30 countries.

Source: Nordson Corporation


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