Date of Award


Degree Name

Bachelor of Science


Paper Science and Engineering


An investigation was conducted to determine the relationship, if any, between base moisture before the size press and actual size pick-up. While size press operation is subject to the effects of many variables, existing literature indicated that maximum pick-up would be realized at twenty percent moisture, while the acceptable on-machine moisture range is five to twelve percent before the size press.

A machine trial was conducted on the pilot fourdrinier at Western Michigan University, wherein the coat weight was monitored as a function of pre-size press moisture. This study revealed that higher coat weights would be realized at increased adhesive level, increased total solids, and increasing machine speed. However, there was no discernable effect on coat weight due to changing moisture content. Further investigation is indicated.