Method for producing pulp molded article
AssigneeKao Corporation
InventorsAkira Nonomura, Yasushi Yamada, Hisao Sato, Tokuo Tsuura, Hiroaki Kobayashi
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Abstract
A method of producing a pulp molded article comprising a papermaking step in which a pulp slurry is fed to the surface of a papermaking mold having suction paths, and water contained in the pulp slurry is sucked through the suction paths whereby the pulp is deposited on the surface to form a wet preform, and a dewatering step in which the wet preform is dewatered, wherein the temperature of the fed pulp slurry is raised while the pulp is being deposited on the surface.
Claims11
A method of producing a pulp molded article, the method comprising the steps of:
- feeding a pulp slurry to a surface of a papermaking mold having suction paths to suck water contained in the pulp slurry;
- sucking water, contained in the fed pulp slurry, through the suction paths;
- depositing a pulp of the fed pulp slurry on the surface of the papermaking mold;
- simultaneously with the depositing of the pulp, raising a temperature of the fed pulp slurry;
- forming a wet pulp preform;
- and
- dewatering the wet pulp preform.
A method for producing a pulp molded article, the method comprising the steps of:
- feeding a pulp slurry into an inside of a cavity of a papermaking mold and towards an inner surface thereof, the papermaking mold having suction paths leading from the inner surface thereof toward an outer surface thereof;
- evacuating the cavity from the inner surface toward an outer side of the papermaking mold via the suction paths;
- forming a wet pulp preform on the inner surface of the papermaking mold;
- and
- blowing a dewatering fluid into the cavity in a closed state to dewater the wet pulp preform, wherein the dewatering fluid is superheated steam, and the blowing of the superheated steam as the dewatering fluid to form a blown superheated steam is done in such a manner that a pressure in the cavity increases to 98 kPa(gauge) or higher.
Dependencies are inferred from the claim text.