Patent ID: 6049998
Filing Date: 2000-04-18
Classification: D21F

Abstract:
A method of drying a paper web in a papermaking machine comprising the steps of:receiving a paper web from a pressing section having a solids content of between about thirty percent and about forty-five percent;pressing the web between a surface of a backing roll and a blanket supported on a shoe wherein the surface of the backing roll is heated between about 300.degree. F. and about 500.degree. F.;raising the solids content of the web to between about fifty-five percent and about sixty-five percent;pressing the web in a nip formed between a heated dryer roll surface and a press roll after the solids content has been raised to between about fifty-five percent and about sixty-five percent with a force of between 100 and 1,000 pounds per linear inch of nip in the cross machine direction, wherein the dryer roll surface is heated to between about 200.degree. F. and about 500.degree. F.;blowing gas of a temperature of between about 200.degree. F. and about 500.degree. F. at a velocity of between about 15,000 and about 30,000 feet per minute on to the web on the dryer roll surface; andremoving the web from the dryer roll without a doctor blade.