Case Study – Matte Phototool
Case Study – Matte Phototool

Challenge:

Printed Circuit Board manufacturers found that using standard Diazo Phototool or Silver Phototool films with Matte finish Liquid Photo Imageable Solder Mask inks (LPISM), left their panels with a mottled appearance instead of the desired even matte surface appearance.

Solution:

Working directly with end user Printed Circuit Board manufacturers, Coveris Advanced Coatings chemists and technical team increased the amount of matting agent within the emulsion layer to correlate to the amounts within the LPISM resins.  A key element to this challenge was to maintain the Diazo Films and LPISM current processing parameters and to eliminate the mottling effect.  This new tecnilith® Phototool version is tecnilith® Matte Phototool designed for use with Matte finish LPISM inks.