Press and dryer roll surfaces and web transfer systems for ultra high paper machine speeds. Quarterly report {number_sign}1

The objective of the project is to provide fundamental knowledge and diagnostic tools needed to design new technologies that will allow ultra high speed web transfer from press rolls to dryer cylinders. A brief summary is given for the progress made on each of the following research tasks: Task 1--identify composition of contaminants and topology of press and dryer roll surfaces at commercial mills; Task 2--develop facilities to simulate contaminant deposition process under controlled experimental conditions; Task 3--develop facilities to simulate web transfer from contaminant surfaces and measure work of adhesion; Task 4--develop models to predict contaminant deposition and work of adhesion; Task 5--develop and verify model to predict web transfer at ultra high paper machine speeds; and Task 6--develop and demonstrate new roll surface conditioning technologies