JAPAN TAPPI JOURNAL
Online ISSN : 1881-1000
Print ISSN : 0022-815X
ISSN-L : 0022-815X
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Volume 22, Issue 8
Displaying 1-8 of 8 articles from this issue
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  • [title in Japanese]
    [in Japanese], [in Japanese]
    1968 Volume 22 Issue 8 Pages 395-401
    Published: August 01, 1968
    Released on J-STAGE: January 22, 2010
    DOIhttps://doi.org/10.2524/jtappij.22.8_395
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1968 Volume 22 Issue 8 Pages 402-405
    Published: August 01, 1968
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.2524/jtappij.22.8_402
    JOURNAL FREE ACCESS
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  • Deodorization of Exhaust Gas in Kraft Pulping (Part 1)
    On the Formation of Malodous Components in Kraft Pulping
    Isao Akamatsu, Hiroshi Kamishima, Yutaka Kimura
    1968 Volume 22 Issue 8 Pages 406-410
    Published: August 01, 1968
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.2524/jtappij.22.8_406
    JOURNAL FREE ACCESS
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    The formation of methyl mercaptan and dimethyl sulfide in kraft pulping was studied on the various Japanese wood types. This work reports the concentration of malodorous components of raw blow gas from autoclave, and its estimation was done by gas chromatographic method.
    Larger amounts of methyl mercaptan and dimethyl sulfide were produced from hardwoods than from softwoods. On the same wood type, the longer cooking time is, the more malodorous components are produced. The higher the sulfidity and cooking temperature are, the more malodorous components are produced. The quantity of malodorous components from cooking of white lauan is similar to that obtained from Japanese hardwoods cooking.
    When processed by batch system, dimethyl sulfide in blow gas decreases with depression of pressure of autoclave. At the end of relief, blow gas contains steam only.
    The results are described in the Table 1 and Fig. 4.
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  • Studies on Pigmented Coating Adhesive (II)
    Pilot Coating Test using PVA and Printability of Coated Paper
    Kôjirô Nakata
    1968 Volume 22 Issue 8 Pages 411-420
    Published: August 01, 1968
    Released on J-STAGE: January 22, 2010
    DOIhttps://doi.org/10.2524/jtappij.22.8_411
    JOURNAL FREE ACCESS
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    Based upon the promising results obtained, pigmented coating adhesives were prepared by using together various kinds of PVA, oxidized starch and casein with SB-latex and were applied to paperboard on a pilot coater.
    Application was carried out by the double coating method using a combination of metering rod/air knife on an off-machine coater.
    Formulation of PVA and casein could be applied without any problem with a coating speed at about 100m/min. However, smoothness, porosity and gloss became very high when aqueous borax (tetrasodium borate decahydrate), which is a gelation agent for PVA, was used as wet finishing agent. As a result of this, the surface of the coated paperboard became oil resistant making the absorption of ink poorer and thus ink setting very slow.
    Printing test was carried out using a manual one-color offset printing machine and an automatic four-color offset printing machine as well, and printability of the coated paper was evaluated.
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  • [title in Japanese]
    [in Japanese], [in Japanese]
    1968 Volume 22 Issue 8 Pages 421-428
    Published: August 01, 1968
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.2524/jtappij.22.8_421
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  • [title in Japanese]
    [in Japanese]
    1968 Volume 22 Issue 8 Pages 429-431
    Published: August 01, 1968
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.2524/jtappij.22.8_429
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  • [title in Japanese]
    [in Japanese], [in Japanese]
    1968 Volume 22 Issue 8 Pages 432-439
    Published: August 01, 1968
    Released on J-STAGE: January 22, 2010
    DOIhttps://doi.org/10.2524/jtappij.22.8_432
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  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese]
    1968 Volume 22 Issue 8 Pages 440-446
    Published: August 01, 1968
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.2524/jtappij.22.8_440
    JOURNAL FREE ACCESS
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