Michelin Recherche Et Technique S.a.

The Buckeye Cellulose Corporation

James Cartwright Williams

Bernardus Maria Koenders

Jean-Claude Aubry

Method for preparing a cellulose formate solution by impregnating and

Wet-laid sheets of softwood high yield fibers in combination with hardwood high yield fibers. The sheets, which are strong enough to be handled by commercial equipment, are formed on conventional papermaking machines using a furnish comprising a major proportion of softwood high yield fibers in admixture with a minor proportion of hardwood high yield fibers. The hardwood high yield fibers are specially prepared by a procedure comprising treating hardwood with relatively high levels of chemicals under relative stringent conditions and defibrating the treated hardwood with relatively high levels of power input. Airfelts made from these sheets exhibit low wet densities. Processes for making the sheets and the airfelts are also provided.

Growing community of inventors

Memphis, TN, United States of America

James Cartwright Williams