초록 ▼

Disclosed is a method for reducing the moisture content of a paper web in a papermaking process from in the range of 10% to 32% dry to the range of 33% to 50% dry wherein the embryonic web is supported on a knuckled through drier fabric and lightly pressed between the knuckled through drier fabric a

Disclosed is a method for reducing the moisture content of a paper web in a papermaking process from in the range of 10% to 32% dry to the range of 33% to 50% dry wherein the embryonic web is supported on a knuckled through drier fabric and lightly pressed between the knuckled through drier fabric and a capillary membrane of a capillary dewatering roll. The capillary membrane has capillary pores therethrough which have a substantially straight through, non-tortuous path with a pore aspect ratio of from about 2 to about 20. A vacuum is drawn within the capillary dewatering roll which is not greater than the negative capillary suction pressure of the capillary pores.

대표청구항 ▼

A method of reducing the moisture content of a fiber web in a webmaking process, comprising the steps of: (a) supporting the web on an air-permeable fabric; (b) lightly pressing the web between the air-permeable fabric and a capillary membrane of a capillary dewatering roll that has pores defined th

A method of reducing the moisture content of a fiber web in a webmaking process, comprising the steps of: (a) supporting the web on an air-permeable fabric; (b) lightly pressing the web between the air-permeable fabric and a capillary membrane of a capillary dewatering roll that has pores defined therein that are configured to induce a negative capillary suction pressure, wherein the web is transported about a peripheral segment of the capillary dewatering roll; and (c) drawing a vacuum within the capillary dewatering roll, the vacuum being not greater than the negative capillary suction pressure of the capillary pores.