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Volume 18, Issue 4
Displaying 1-10 of 10 articles from this issue
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[in Japanese]1964 Volume 18 Issue 4 Pages 139-144
Published: April 05, 1964
Released on J-STAGE: January 21, 2010
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[in Japanese]1964 Volume 18 Issue 4 Pages 145-154
Published: April 05, 1964
Released on J-STAGE: November 10, 2009
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[in Japanese], [in Japanese], [in Japanese]1964 Volume 18 Issue 4 Pages 155-159
Published: April 05, 1964
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESSDownload PDF (878K) -
1964 Volume 18 Issue 4 Pages 160-160,190
Published: April 05, 1964
Released on J-STAGE: January 21, 2010
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Ten Yoshii, Shigehiko Yoshioka, Keisaburo Tabuchi1964 Volume 18 Issue 4 Pages 161-168
Published: April 05, 1964
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESSApplying petroleum resin (aqueous solution type) as a surface sizing agent for sheets formed from pulp stuff added alum only, there produced hard sized paper which could never be achieved by internal sizing process.View full abstractDownload PDF (3641K) -
Part 1. Cooking of Japanese LarchKiyoshi Aida, Akio Kikuchi1964 Volume 18 Issue 4 Pages 169-182
Published: April 05, 1964
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESSIt is difficult to cook larch wood with the conventional Ca-base sulfite digestion process, and the pulp obtained is yellow under the influence of flavanon in the heartwood.
In recent years, with the advancements of the sulfite cooking method, comparatively new methods such as the Arbiso, the Magnefite, the Sivola, the Stora, the Kramfors and the Weyer haeuser digestion have been developed.
With these methods, it is not difficult to pulp woods which have been considered not suitable for pulping. However, even with the above mentioned processes, pulps produced were not free from yellowing derived from flavanon in the heartwood of larch.
We developed the new successful two-stage sulfite pulping method; in stage 1, the wood was treated with sulfite solution at pH 811 at 150180°C and then most of the liquor were drawn off. In stage 2, the contents were cooked with dilute SO2 solution at higher maximum temperature to the final pH 1.02.5.
Higher brightness without yellowing was obtained with this pulping method resulting in a very low PN and a low ether-extract, and the pulp was easy to refine with good strength properties.View full abstractDownload PDF (2375K) -
Bengt Brunes1964 Volume 18 Issue 4 Pages 183-186
Published: April 05, 1964
Released on J-STAGE: November 10, 2009
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[in Japanese]1964 Volume 18 Issue 4 Pages 187-190
Published: April 05, 1964
Released on J-STAGE: November 10, 2009
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[in Japanese], [in Japanese]1964 Volume 18 Issue 4 Pages 191-192
Published: April 05, 1964
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESSDownload PDF (343K) -
1964 Volume 18 Issue 4 Pages 193-194
Published: April 05, 1964
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESSDownload PDF (466K)
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