Troubleshooting med avseende på avsättningar på gummiduk, Bobergs tryckeri AB

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Bobergs printing house in Falun has during some time had problems regarding deposits on blankets in theirs Müller Martini UV-printing presses. Deposits appear in both image areas and non-image areas. These areas have been analyzed and the deposits on non-image areas contain chalk, clay and talc. The question remains how these material bond to the blanket surface. The chalk and clay comes from the paper. The talc comes from the ink. Deposits from image areas contain pigment and talc from the printing ink. The dampening water has also been analyzed. The result shows some sort of problem with the hardness regulat...