Title:
METHOD FOR REMOVING FOREIGN MATERIAL IN PRODUCTION OF WASTE PAPER PULP, METHOD FOR PRODUCING WASTE PAPER PULP AND PRINTING PAPER
Document Type and Number:
Japanese Patent JP2004091980
Kind Code:
A
Abstract:
To remove an hot-meltable foreign material such as a hot-melt adhesive without lowering an ink releasable performance.
The method for removing the foreign material in production of the waste paper pulp comprises a disintegration step 1 for disintegrating unsorted waste paper under conditions of ≥46°C, 5-25 wt.% pulp concentration and 10-30 min treating time to provide a fiber suspension and a foreign material-removing step for separating and removing the foreign material from the fiber suspension at ≤40°C.
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Inventors:
ONO SEIZO
OSATO AKIRA
OSATO AKIRA
Application Number:
JP2002255393A
Publication Date:
March 25, 2004
Filing Date:
August 30, 2002
Export Citation:
Assignee:
DAIO SEISHI KK
International Classes:
D21C5/02; (IPC1-7): D21C5/02
Attorney, Agent or Firm:
Yoshihisa Nagai