Title:
PRODUCTION OF MECHANICAL PULP FOR PAPERMAKING AND PRODUCTION OF PAPER
Document Type and Number:
Japanese Patent JPH02118191
Kind Code:
A
Abstract:
PURPOSE: To obtain the subject pulp having excellent whiteness, opacity and strength in a relatively low cost by treating mechanical pulp for papermaking with an enzyme having decomposing activity for pectin component and beating.
CONSTITUTION: Wood log or wood chip is ground or fibrillated to prepare slurry of mechanical pulp for papermaking having 50-700ml Canadian standard water leakiness and an enzyme having decomposing activity for pectin component is added to the slurry, then treated with the enzyme, thus further beaten to lower Canadian, standard water leakiness to afford the aimed pulp. Besides the pulp is preferably further subjected to oxidation bleaching and/or reduction bleaching.
Inventors:
SATO TAKASHI
MATSUKURA NORIO
HATA KUNIO
MATSUKURA NORIO
HATA KUNIO
Application Number:
JP27011588A
Publication Date:
May 02, 1990
Filing Date:
October 26, 1988
Export Citation:
Assignee:
JUJO PAPER CO LTD
International Classes:
C12S3/08; D21B1/14; D21C9/10; D21D1/00; (IPC1-7): C12S3/08; D21B1/14; D21C9/10; D21D1/00
Other References:
JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY=1982
Attorney, Agent or Firm:
Kazuo Kawasumi