Title:
METHOD FOR PRODUCING PAPER
Document Type and Number:
Japanese Patent JP3563707
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing paper having high whiteness and smoothness despite using a pigment recovered from papermaking sludge as filler or a coating pigment and causing no abrasion of the papermaking wire or the like in producing the paper.
SOLUTION: This method comprises making paper using a pigment as an internally filling and/or coating pigment, which is obtained through (1) a molding process where papermaking sludge is molded to prescribed form and size, (2) a carbonizing process where the molded product is carbonized, (3) a burning process where the carbonized product obtained by the carbonization is burnt and (4) a pulverizing process where the burnt ash is pulverized so as to have 0.1-10 μm average particle diameter.
Inventors:
Takashi Watanabe
Yasuyuki Wakabayashi
Yasuyuki Wakabayashi
Application Number:
JP2001078022A
Publication Date:
September 08, 2004
Filing Date:
March 19, 2001
Export Citation:
Assignee:
Daio Paper Co., Ltd.
International Classes:
D21H17/01; D21H17/63; D21H19/38; B09B3/00; (IPC1-7): D21H17/01; B09B3/00; D21H19/38
Domestic Patent References:
| JP2002308619A | ||||
| JP2001262002A | ||||
| JP54014367A | ||||
| JP11310732A | ||||
| JP2001011337A | ||||
| JP2001026727A | ||||
| JP2229588A |
Attorney, Agent or Firm:
Yoshihisa Nagai
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