International Paper Company

Phillip Norrdahl

Dennis W Anderson

Kapil Mohan Singh

Alexander A Koukoulas

Douglas L Hamilton

A paper product suitable for use in making envelopes and the like and having enhanced printability. The enhancement in printability is attained through the use of shoe nip calendering. The final product has the following material properties: (1) a basis weight in the range 16-32 lb./1,300 ft,; (2) a density equal to or less than 0.75 g/cc; (3) a smoothness as measured by the Hagerty/Sheffield test (TAPPI Test Method T 538 om-88) greater than 200 Sheffield units; and (4) a Parker Print Surf roughness as measured by the Parker test (TAPPI Test Method T 555 om-94) less than 5.0 microns (measured using a pressure of 10 kgf/cm,with a soft backing).

Growing community of inventors

Loveland, OH, United States of America

Phillip Norrdahl