Appearance Testing

(Image Expert)

We measure the relative appearance of paper and board with an ImageXpert system. Achieving a uniform surface appearance can be particularly difficult when manufacturing coated grades.  The degree of non-uniformity (mottle) present on the coated surface depends both on coating coverage and the opacity of the applied coating or coatings.  The data collected by our image analysis system correlates well with the visual ranking of a variety of coated board samples.