Manufacturing method of pulp sheet and dehydration improving agent for pulp slurry

摘要

Problem to be solved: to provide a method of producing a pulp sheet and a dehydration improving agent for a pulp slurry, in which the moisture content can be sufficiently reduced before the dryer part.Pulp slurryWire partsThrough the press part and the dryer part, dehydratedIs a method of manufacturing a pulp sheetManufacturing method of pulp sheet characterized by that the pulp slurry contains an ether type non-ionic surfactantDehydration enhancing agent for pulp slurry containing non ionic surfactant of ether type andThe ether type nonionic surfactant isA copolymer having a polyoxyethylene chain and a polyoxypropylene chain in a single polymer or structural unit of polyoxypropyleneThis is a dehydration improving agent for a pulp slurry having a content of 85% or more of the polyoxypropylene chain of the copolymer.Diagram