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Title:
PAPER MAKING
Document Type and Number:
Japanese Patent JPH04352897
Kind Code:
A
Abstract:

PURPOSE: To homogeneously disperse fibers having long lengths and a small disaggregation ability and produce an uniform sheet having a good formation by a wet paper-producing method by subjecting a slurry comprising the fibers, water and a surfactant having a high foamability to a specific treatment.

CONSTITUTION: A slurry comprising fibers, water and a surfactant having a high foamability (e.g. a sodium alkylbenzenesulfonate) is subjected to a strong mechanical treatment to foam the slurry. The treatment is continued to disaggregate and disperse the fibers in the slurry. The slurry is mixed with a highly viscous solution (e.g. a CMC aqueous solution) and subsequently with a defoaming agent to defoam the slurry. The slurry is finally subjected to a paper-producing process. The mechanical treatment method is preferably a method in which the slurry is strongly stirred with a high speed mixer, etc., and a method in which air is blown into the slurry at a high speed.


Inventors:
OKU YASUYUKI
Application Number:
JP14946091A
Publication Date:
December 07, 1992
Filing Date:
May 24, 1991
Export Citation:
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Assignee:
MITSUBISHI PAPER MILLS LTD
International Classes:
D21F11/00; D21H23/02; D21H23/04; D21H27/00; (IPC1-7): D21F11/00; D21H23/02