JAPAN TAPPI JOURNAL
Online ISSN : 1881-1000
Print ISSN : 0022-815X
ISSN-L : 0022-815X
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Volume 12, Issue 6
Displaying 1-9 of 9 articles from this issue
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  • [title in Japanese]
    [in Japanese]
    1958 Volume 12 Issue 6 Pages 354-358
    Published: June 10, 1958
    Released on J-STAGE: November 17, 2009
    DOIhttps://doi.org/10.2524/jtappij.12.354
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1958 Volume 12 Issue 6 Pages 359-365
    Published: June 10, 1958
    Released on J-STAGE: November 17, 2009
    DOIhttps://doi.org/10.2524/jtappij.12.359
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1958 Volume 12 Issue 6 Pages 366-374
    Published: June 10, 1958
    Released on J-STAGE: November 17, 2009
    DOIhttps://doi.org/10.2524/jtappij.12.366
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1958 Volume 12 Issue 6 Pages 375-379,384a
    Published: June 10, 1958
    Released on J-STAGE: November 17, 2009
    DOIhttps://doi.org/10.2524/jtappij.12.375
    JOURNAL FREE ACCESS
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  • About the Distribution of Hemicelluloses in Wood Fiber
    Motohiro Shimizu, Haruo Yamada
    1958 Volume 12 Issue 6 Pages 380-382
    Published: June 10, 1958
    Released on J-STAGE: November 17, 2009
    DOIhttps://doi.org/10.2524/jtappij.12.380
    JOURNAL FREE ACCESS
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    We isolated the fiber from each chip of a Japanese-red-pine, fir, beech, and a birch by mild treatments, and hydrolyzed it under the condition of 200 times quantities 3 NHCl at 100°C.Then, by paperchromatography, we studied on the component sugars in the hydrolyzed residue.
    Conclusions obtained are as follows :
    1.Concerning the softwood fibers, Xylan and Mannan are distributed widely in every part of them.
    2.Concerning the hardwood fibers, Zylan is distributed in every part of them but Mannan is in the part of comparatively lower order of them.
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  • About the Hemicelluloses in the Radial Direction of Wood Fiber
    Motohiro Shimizu, Haruo Yamada
    1958 Volume 12 Issue 6 Pages 382-384
    Published: June 10, 1958
    Released on J-STAGE: February 10, 2010
    DOIhttps://doi.org/10.2524/jtappij.12.382
    JOURNAL FREE ACCESS
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    After we nitrated the wood fiber with the nitrating agent (its composition is as follows : HNO3 : (CH3CO) 20 : CCl4=1 : 1 : 5), we peeled off the nitrated part of it with acetone, and studied on the component sugars in the residue by paperchromatography.
    Consequently, we found that Xylan and Mannan are distributed widely from outside to inside of thewood fiber.
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  • Studies on Synthetic Fiber Papers
    III.Manufacture of the Nylon Papers (2)
    S. Serizawa, K. Osada, T. Saeki
    1958 Volume 12 Issue 6 Pages 385-392
    Published: June 10, 1958
    Released on J-STAGE: February 10, 2010
    DOIhttps://doi.org/10.2524/jtappij.12.385
    JOURNAL FREE ACCESS
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    The nylon fiber papers manufactured by the paper machine (reported in the Japanese Tappi 12, No.1, 1958) have been finished with nylon derivatives for purpose of increasing the bonding strength between fiber and fiber.
    And so on, we have compared physical and chemical properties of the nylon fiber papers with the cellulosic fiber papers.
    Those results are the following :
    1.As the binder of nylon fiber papers, Type 8 nylon (n-methoxymethylated nylon 6) proved most effective arming many nylon derivatives to improve the strength of sheet, and its optimum binder content was about 15 %.
    2.Its strength was increased more than two times by heating under elevated pressures.The optimum curing condition were obtained by the following treatments : heating 170-180°C for 15-20 see., linear nip pressure 5-6 kg/em by three hot rollers.
    3.The nylon fiber papers manufactured by this method had high porosity and high folding endurance (more than 100, 000 folds).Compared with cellulosic fiber papers, it had remarkably higher elastic recovery, bending elasticity and resistance of acid, alkali and bacteria, but it was a little worse in point of light (specially, to the ultraviolet-ray) and thermal resistance.It decreased in tensile strength but it was less remarkable for retrioration than the cellulosic fiber papers.
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  • Double Wire Fourdrinier Machine
    A. Kitano, M. Araki, I. Tati
    1958 Volume 12 Issue 6 Pages 393-396
    Published: June 10, 1958
    Released on J-STAGE: November 17, 2009
    DOIhttps://doi.org/10.2524/jtappij.12.393
    JOURNAL FREE ACCESS
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    The principle of Double Wire Fourdrinier is desceribed and economies of this innovation are discussed.This invented new Fourdrinier is constructed of the strong and large mesh base wire and the fine mesh top wire mounted on it.The base wire is spreaded on fourdrinier strongly so as to keep plainly the formation part on table rolls.
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  • [title in Japanese]
    [in Japanese]
    1958 Volume 12 Issue 6 Pages 397-404
    Published: June 10, 1958
    Released on J-STAGE: November 17, 2009
    DOIhttps://doi.org/10.2524/jtappij.12.397
    JOURNAL FREE ACCESS
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