JAPAN TAPPI JOURNAL
Online ISSN : 1881-1000
Print ISSN : 0022-815X
ISSN-L : 0022-815X
Search
Advanced search
OR
Browse
Search
Volume 24, Issue 12
Displaying 1-7 of 7 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
  • [title in Japanese]
    [in Japanese], [in Japanese]
    1970 Volume 24 Issue 12 Pages 65-66
    Published: December 01, 1970
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.2524/jtappij.24.12_65
    JOURNAL FREE ACCESS
    Download PDF (4538K)
  • Manufacture of Castcoated Paper
    Hideo Shimizu
    1970 Volume 24 Issue 12 Pages 617-625
    Published: December 01, 1970
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.2524/jtappij.24.12_617
    JOURNAL FREE ACCESS
    Download PDF (5813K)
  • Overseas Capital Expansion by the American Pulp, Paper and Paperboard Industries and the Responding Attitudes of the European Colleague Enterprises (PartIV)
    Kunihiko Okamoto
    1970 Volume 24 Issue 12 Pages 626-636
    Published: December 01, 1970
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.2524/jtappij.24.12_626
    JOURNAL FREE ACCESS
    Download PDF (1540K)
  • Studies on Pyrolysis of SCP Black Liquors.
    (I) Pyrolysis in Dry Nitrogen Atmosphere.
    Toshiyuki Nakata, Kiichi Nagaya, Toshio Tachibana
    1970 Volume 24 Issue 12 Pages 637-642
    Published: December 01, 1970
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.2524/jtappij.24.12_637
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    Pyrolysis of dry solids of SCP black liquors was carried out over the range 200-750°C in dry nitrogen atmosphere. This reaction was disscussed on the basis of chemical analysis and infra-red spectra of its solid products.
    There are three stages in the reaction. First stage is at 200-450°C (pyrolysis temp.). On this stage, gasification of organic materials takes place endothermically. Second stage is at 450-600°C. A part of sodium forms a water-insoluble sodium compound with carbonaceous materials. Third stage is at 620-750°C. Na2SO4 is reduced with carbonaceous materials. As a result of pyrolysis at 700°C, main component of the solid products is Na2CO3, and sodium yield based on the water-soluble materials is more than 75%.
    View full abstract
    Download PDF (737K)
  • On the Photoelectrical Method of the Printing Smoothness “Tape Printing Method”.
    Part 3 Microscopic Comparison between the Commercial Prints and the TP-patterns.
    Shoji Ando
    1970 Volume 24 Issue 12 Pages 643-648
    Published: December 01, 1970
    Released on J-STAGE: November 19, 2010
    DOIhttps://doi.org/10.2524/jtappij.24.12_643
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    This report described the microscopic studies on the Tape Printing Method directly comparing the TP patterns with the typical stripes observed in the commercial prints.
    It was observed that the TP pattern had good correlations with the commercial prints.
    View full abstract
    Download PDF (11266K)
  • The Modification of Paper with Poly (Vinyl Acetate) by Beater Addition, Emulsion and Solution Saturation
    Report I Retention of Resin in Paper
    A.K.M. Lutfar Rahman, Mitsuo Fujii
    1970 Volume 24 Issue 12 Pages 649-664
    Published: December 01, 1970
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.2524/jtappij.24.12_649
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    Poly (vinyl acetate) emulsion was incorporated to paper by (1) beater addition and (2) saturation. The addition of (poly vinyl acetate) solution to paper was also accomplished by (3) saturation. Measurements of percentage resin retentions of the modified sheets (gms. of resin retained per 100 gms pulp) obtained from the pulps of various degrees of beating by three different procedures (1, 2, 3) were made efficiently. The surface structures of the untreated as well as various PVAc resin treated sheets were examined by optical and electron microscopes. The effect of beating on the fibres and the sheets was studied. The differences in the surface structures of the modified sheets owing to the difference in the method of resin treatment and the quantity of resin retained to the sheets and the mechanism of polymer deposition were discussed. In the case of both emulsion and solution saturation it was found that the percentage of resin retention was decreased with the increase in the degree of beating but increased with the increase in the solid, content in the emulsion and solution respectively. On the other hand the beater added sheets showed an increase in the percentage of retention both with the increase in the degree of beating as well as the resin-pulp ratio The percentage of resin pick up (gms. of resin picked up per 100 gms of resin used) by the beater added sheets was found to increase remarkably with the increase in the degree of beating and showed a considerable increment with the increase in the resin-pulp ratio particularly those from the beaten pulp. The measurement of percentage of pick up gave some information to the study of the mechanism of polymer deposition on fibre by beater addition procedure.
    View full abstract
    Download PDF (25678K)
  • An Approach to the Mill Foundation Work
    Saburo Kaneda
    1970 Volume 24 Issue 12 Pages 665-675
    Published: December 01, 1970
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.2524/jtappij.24.12_665
    JOURNAL FREE ACCESS
    Download PDF (1323K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top