JAPAN TAPPI JOURNAL
Online ISSN : 1881-1000
Print ISSN : 0022-815X
ISSN-L : 0022-815X
Search
Advanced search
OR
Browse
Search
Volume 36, Issue 4
Displaying 1-6 of 6 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
  • Surface of Cellulose Fibre
    Makoto Usuda
    1982 Volume 36 Issue 4 Pages 423-433
    Published: April 01, 1982
    Released on J-STAGE: November 19, 2009
    DOIhttps://doi.org/10.2524/jtappij.36.423
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    This review treats of the characteristics of morphological and physical surface of wood pulp. The surface area of pulp varies with the pulping yield and the chemical or mechanical treatments, and the value also changes dependent on the measuring method. Liquid permeability method gives a few square meters of specific surface area for the water-swollen pulp, while the very large one is obtained by gas adsorption method or solute exclusion method. The difference in values is interpreted on the basis of the principle of the method.
    J. E. Stone and A. M. Scallan have studied using the solute exclusion method the changes in surface area during cooking and refining. They correlated the increase in the surface area on refining with the structural changes, namely the internal fibrillation taking the multi-lamellae structure into account. In addition to their works, interpretation on the structure of cell wall offered by other workers was also described.
    View full abstract
    Download PDF (1511K)
  • Utilization of Coal and Environmental Problem
    Taku Suzuki
    1982 Volume 36 Issue 4 Pages 434-451
    Published: April 01, 1982
    Released on J-STAGE: November 19, 2009
    DOIhttps://doi.org/10.2524/jtappij.36.434
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    In Connection with recent energy problems, administrative countermeasures to be taken by authorities concerned with environment conservation are examined. As a report that may be called a tentative plan for a basis of discussion of this matter has been published, I will introduce its essential points to readers in this article.
    Coal ocuppies an inportant position as a substitute energy for oil, but, in order to use coal on a large scale, there is many a problem characteristic of coal such as air and water pollution and disposal of cinders, etc.
    It is believed that future environmental administration and preparations to receive overseas coal will become key factors if coal is to be utilized according to schedule.
    Environment agency is said to be taking enforcement of environmental regulations into account, but we wish that, recognizing fully the importance of energy problem, it will work out appropriate measures enabling environment to be compatible with energy.
    View full abstract
    Download PDF (2393K)
  • [title in Japanese]
    1982 Volume 36 Issue 4 Pages 452
    Published: April 01, 1982
    Released on J-STAGE: November 19, 2009
    DOIhttps://doi.org/10.2524/jtappij.36.452
    JOURNAL FREE ACCESS
    Download PDF (91K)
  • Pulp and Paper Mills in Japan (42)
    Kawanoe Mill, Marusumi Paper Mfg. Co., Ltd.
    Marusumi Paper Mfg. Co. Ltd.
    1982 Volume 36 Issue 4 Pages 453-462_1
    Published: April 01, 1982
    Released on J-STAGE: February 22, 2010
    DOIhttps://doi.org/10.2524/jtappij.36.453
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    Marusumi Paper Mfg. Co., Ltd. is located in the city of Kawanoe, which is so famous in Japan as one of massive paper-production centers.
    The city is in the eastern end of Ehime Prefecture, and her northern shore is washed by calm waves of the Seto Island Sea.
    And the city increases her significant weight upon economical activities of western part of our country, as her location being close to each industrial centers such as Osaka, Hiroshima, Kyushu and their satellites.
    View full abstract
    Download PDF (18031K)
  • Experiences of Defoaming in Pulp and Paper Manufacturing Process
    Hamao Wada
    1982 Volume 36 Issue 4 Pages 463-473
    Published: April 01, 1982
    Released on J-STAGE: February 22, 2010
    DOIhttps://doi.org/10.2524/jtappij.36.463
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    This paper consists of five sections under the tittles listed below :
    1. Causes of foaming and examples in pulp and paper manufacturing process
    2. Aspects of foaming and effects of external conditions on them
    3. Apparent features of foams in different kinds of effluents
    4. Defoaming agents and devices
    5. Defoaming methods in each process
    Some ideas and experiences to overcome the foam problems are described, which would be helpful for those suffering from them.
    View full abstract
    Download PDF (17459K)
  • Process System Approaches for Resources Recycling in Pulp and Paper Industries
    6 th Report; Optimal Reginal Distribution of Waste Paper and Board in Recovery and Utilization System
    Suteaki Shioya, Fusao Yoshida, Hiromu Ohno, Yoko Tsujimoto, Iori Hashi ...
    1982 Volume 36 Issue 4 Pages 474-482
    Published: April 01, 1982
    Released on J-STAGE: February 22, 2010
    DOIhttps://doi.org/10.2524/jtappij.36.474
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    Regional distribution of resources is one of the problems to be considered in recycle utilization of resources. In this paper, a general representation of a distribution problem of resources is given at first. This concludes that the problem becomes a linear or nonlinear programming problem, in general, of determining the distribution coefficients of resources so as to minimize a performance index. Next, problems of optimal distribution including the production stage of paper and board are discussed.
    It is shown that the recovery rate of waste paper has an essential role in minimizing the amount of virgin pulp required for production of paper and board. It is also necessary to balance the recovery rate and utilization rate in each region.
    View full abstract
    Download PDF (1113K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top