A papermaking process including the steps of forming a wet paper web on a papermaking machine, pulling vacuum through the web to remove water from the web and thereby generate discharge air, and diverting at least a portion of the discharge air through a control loop to a hot air drying system within the papermaking process to aid in drying the web, wherein the vacuum is generated by centrifugal blowers.

Disclosed is a through-air dryer shower assembly disposed within the through-air dryer and enables efficient cleaning of the through-air dryer without having an operator enter the dryer. The shower may comprise an elongated shower conduit having a plurality of nozzles disposed thereon and may be affixed to a baffle disposed within the through-air dryer cylinder. The shower assembly is generally positioned to spray a pressurized stream of wash fluid against the interior surface of the dryer causing debris accumulated within the deck to flow through the structure to the outer surface for discharge.

A method of making a fibrous sheet includes providing a first furnish including a primary pulp having papermaking fibers, the papermaking fibers (i) having a weight-weighted average fiber length between about two and seven tenths millimeters and about three millimeters, (ii) a coarseness of about sixteen milligrams per one hundred meters or lower, and (iii) being at least eighty percent of the papermaking fibers of the first furnish, forming a nascent web having at least two layers, one of the at least two layers being (i) a surface layer of the nascent web and (ii) formed from the first furnish, dewatering the nascent web to form a dewatered web, applying the surface layer of the dewatered web to the outer surface of a Yankee drum of a Yankee dryer, and drying the dewatered web with the Yankee dryer to form a fibrous sheet.

The present application discloses improved cellulosic products and methods of making improved cellulosic products using split base core wet press felt designs having at least a first woven base core material and a second woven base core material, wherein the first and second base core materials are separated by at least one fibrous batting material. The present application further discloses improved cellulosic products and methods of making improved cellulosic products using press felts designs having an apertured polymeric sheet-side surface.

A method is provided for the improvement of fabric release in applications such as tissue and towel making processes. The method comprises applying a micro-emulsion of hydrophobic agents and surfactants to the surface of a structured fabric used in sheet making applications of a tissue machine.

Paper products and methods of making the paper products. The paper product includes a first stratified base sheet and a second stratified base sheet. At least about eighty percent of the papermaking fibers in an outer layer of each of the first stratified base sheet and the second stratified base sheet has (i) a weight-weighted average fiber length between about two and seven tenths millimeters and about three millimeters and (ii) a coarseness of about sixteen milligrams per one hundred meters or lower. An inner layer of the second stratified base sheet is attached to the inner layer of the first stratified base sheet. The paper product has a CD wet/dry tensile ratio between about twenty-five hundredths and about thirty-five hundredths.

A papermaking process including the steps of forming a wet paper web on a papermaking machine, pulling vacuum through the web to remove water from the web and thereby generate discharge air, and diverting at least a portion of the discharge air through a control loop to a hot air drying system within the papermaking process to aid in drying the web, wherein the vacuum is generated by centrifugal blowers.

A multi-ply through air dried structured tissue having a bulk softness of less than 10 TS7 and a lint value of 5.0 or less. Each ply of the tissue has a first exterior layer that includes a wet end temporary wet strength additive in an amount of approximately 0.25 kg/ton and a wet end dry strength additive in an amount of approximately 0.25 kg/ton, an interior layer that includes a first wet end additive comprising an ionic surfactant, and a second wet end additive comprising a non-ionic surfactant, and a second exterior layer.

A multi-ply through air dried structured tissue having a bulk softness of less than 10 TS7 and a lint value of 5.0 or less. Each ply of the tissue has a first exterior layer that includes a wet end temporary wet strength additive in an amount of approximately 0.25 kg/ton and a wet end dry strength additive in an amount of approximately 0.25 kg/ton, an interior layer that includes a first wet end additive comprising an ionic surfactant, and a second wet end additive comprising a non-ionic surfactant, and a second exterior layer.

A method of making a board or mat, includes forming a liquid slurry with solids including inorganic fibers and cellulose fibers, forming a web from the slurry on at least one foraminous element, extracting water from the web, and drying the web to make a product, wherein the pH of the liquid slurry including the inorganic fibers and cellulose fibers is in the pH range of 2-6 and wherein the cellulose fibers have a Schopper-Riegler index of ≥50 according to ISO 5267.