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Volume 16, Issue 11
Displaying 1-9 of 9 articles from this issue
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[in Japanese]1962 Volume 16 Issue 11 Pages 870-876
Published: November 20, 1962
Released on J-STAGE: November 17, 2009
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[in Japanese]1962 Volume 16 Issue 11 Pages 877-880
Published: November 20, 1962
Released on J-STAGE: November 17, 2009
JOURNAL FREE ACCESSDownload PDF (688K) -
[in Japanese]1962 Volume 16 Issue 11 Pages 881-893
Published: November 20, 1962
Released on J-STAGE: November 17, 2009
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I. Fibers and Chemical Composition of Tobacco StemYoshitsugu Kimura, Fumiyuki Teratani1962 Volume 16 Issue 11 Pages 894-900
Published: November 20, 1962
Released on J-STAGE: November 17, 2009
JOURNAL FREE ACCESSThe residual parts of Tobacco plant after the harvesting of leaves were recently produced from 120 to 150 thousand-tons per year in Japan. As a new source for pulp and papermaking, the utilization of those material has been investigated.
The waste rods from a Japanese native Tobacco plant were approximately consisted of the following ratio of tissue as 12% of root, 64% of wood part of stem, 16% of bast part of stem and 8% of pith. The tissues of dry stem and root observed microscopically are shown in Fig. 14. The ratio of tissue elements on the cross-section of wood part of stem was generally 10% of vessel, 19% of ray tissue and 71% of wood fiber. The xylem of root was almost similar to that of stem.
The various cells in pulp obtained from each part of Tobacco plant are shown in Fig. 5, and those dimensions are summarized in Table 2. The main cell forming the Tobacco pulp was slightly fine and thin-walled fiber as compared with the common hardwood fiber. The characteristic cells such as the thick-walled bast fiber and the spherical pith cell were considerably contained in Tobacco pulp.
Chemical analyses on the whole Tobacco stem and the only wood part of stein were carried out according to the ordinary method of wood analysis. The data in Table 4 showed that the whole stem was very rich in ash, hot water extract and 1% NaOH extract, but the wood part of stein had roughly the similar composition to the common hardwood except that the Tobacco xylem abounded in pectin.
It is concluded that the waste rod of Tobacco plant has some distinctive feature on fiber and composition and can be possibly utilized as a source matter for papermaking pulp.View full abstractDownload PDF (8089K) -
Kan Kajima, Haruro Tabata, Hiroshi Watanabe, Teruo Kubo1962 Volume 16 Issue 11 Pages 901-905
Published: November 20, 1962
Released on J-STAGE: November 17, 2009
JOURNAL FREE ACCESSThe hydro-cracking of the purified sulfite waste liquor and the precipitated lignin by using the mixture of iron hydroxide and sulfur as catalyst, were examined.
The relation between the liquefied yield or the components of liquefied oil and the reaction temperature and also between the liquefied yield or the components of liquefied oil and the alkaline concentration of sulfite waste liquor were studied.View full abstractDownload PDF (807K) -
Kiyoshi Mii, Fumikazu Tateiwa, Sigeo Oyama1962 Volume 16 Issue 11 Pages 906-911
Published: November 20, 1962
Released on J-STAGE: November 17, 2009
JOURNAL FREE ACCESSThe degree of sizing of the paper has been tested by many methods, e. g. StOckigt method, dry indicater method, etc. Most of them, however, are the penetrating tests of liquid through the paper.
In this paper, a method of infiltrating test along the surface of the paper is mentioned, and by this method, we can measure the anti-spreading ability for liquid without influenceof the thickness of specimen, ond are able to test the poorly sized or unsized paper, and also the difference between the felt side andthe wire side of the paper.View full abstractDownload PDF (313K) -
Studies on the Breaking Strength of Japanese Paper Yarn and Paper Yarn (No. IV)Kuniichi Yamada1962 Volume 16 Issue 11 Pages 912-915
Published: November 20, 1962
Released on J-STAGE: November 17, 2009
JOURNAL FREE ACCESSWhen a yarn is stretched and then cut, some fibers in the yarn are broken, the rest slipped out.
On the assumption that a yarn is cut due to breaking of all fibers, the breaking strength of a yarn P can be described in the following formula.
P=P0/1+6R0cot2β0/t (1-1.43cot2β0w0/R0sinβ0 (1+6R0cot2β0/t))
where P0 : Breaking strength of the cut-materials
R0 : Radius at the beginning of twist
β0 : Pitch angle at the beginning of twist
w0 : Width of the cut-materials
t : Thickness of the cut-materialsView full abstractDownload PDF (549K) -
[in Japanese]1962 Volume 16 Issue 11 Pages 916-920
Published: November 20, 1962
Released on J-STAGE: November 17, 2009
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[in Japanese]1962 Volume 16 Issue 11 Pages 926-934
Published: November 20, 1962
Released on J-STAGE: November 17, 2009
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