Influence of Application Method on Coating Structure, PaperCon '09 Conference

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The effect of coating methods on the coating layer and print uniformity was investigated. A new laboratory device to emulate forward roll coating was developed. A method to characterize coating uniformity using a staining technique and a confocal laser scanning microscope (CLSM) was proposed. Burn out tests are compared to the CLSM technique in terms of coating layer evenness. The coating mass distribution was calculated using image analysis software from both methods. Samples were printed with a procedure to bring out back trap mottle issues.