Roller Technology for Extrusion-Reaching New Heights in Substrate Quality and Roller Longevity, 2001 Polymers Laminations & Coatings Conference Proceedings

Wally Polston, Richard H. Wilson--With the development of ever-more sophisticated substrates, a continuing need to improve substrate finish characteristics and the trend towards thinner and thinner materials and coatings, the quality of roller coverings used in film and sheet extrusion processes has never been more important than it is today. Compounded with the push to increase productivity and lower overall costs, extruders are seeking roller technologies that enhance both quality and performance.

Advancements in elastomeric and hard-coat roller covering technologies have been made which help extruders meet these challenges. Improvements in covering materials, design, manufacturing and finishing techniques allow extruders to consistently achieve superior uniformity and clarity with fewer defects; run at faster speeds; and significantly reduce downtime for roller change-outs.

This presentation addresses roller-related challenges and state-of-the-industry solutions in extrusion of film and sheet, extrusion coating and laminating and blown-film processes. The focus will be on key roller positions within these processes.