紙パ技協誌
Online ISSN : 1881-1000
Print ISSN : 0022-815X
ISSN-L : 0022-815X
46 巻, 6 号
選択された号の論文の11件中1~11を表示しています
  • 門屋 卓
    1992 年 46 巻 6 号 p. 711-719
    発行日: 1992/06/01
    公開日: 2009/11/16
    ジャーナル フリー
    This paper is described on general view of packaging materials in Japan and recent trends and some problems in paper and paperboard for packaging.
    Total production amounts of packaging materials in Japan in 1991 is 22, 124 thousant tons and its 54.7% is used for paper and paperboard packaging, so Japanese peoples dissipate the packaging mareials about 150 kg/year·person and 46, 000 yen/year·person.
    Amounts of paper and paperboard for packaging is about 43% to total production amount of paper and paperboard in Japan.
    Role of physical propertis in packaging science is very important from view point of converting, distribution, storage and commercial uses which is somewhat different from imformation media of paper such as printing or reprographic papers.
    For example, shape and handling of catonboxes or corrugated boxes depend on stiffness or rigidity of paper and it is very important to analyze bending property of paper and paperboard from view of physical meaning.
    Recycls of packaging materials is also very important for natural resourses and in Japan, 50% of paper and paperboard, 43% of aluminum can, 44% of steel can and 49% of glass bottle are now recycled and in future 55% of paper and paperboard, 60% of aluminum can, 60% of steel can and 55% glass bottle are going to be recycled in 1995 or 1996.
    This paper is also discussed the degradation properties of packaging materials from view point of landfill, especially desposed paperboard materials. Degradation properties of several kinds of paperboard container under outdoor and laboratory conditions are introduced on fundamental observations.
  • 川村 栄一
    1992 年 46 巻 6 号 p. 720-732
    発行日: 1992/06/01
    公開日: 2009/11/16
    ジャーナル フリー
    Due to the unexpected development of high quality photocopier machines, a strong interest towards development of anti-photocopying technology has arisen. High quality photocopiers make it unduly easy for someone to make unauthorized copies out of confidential documents, thus effective countermeasures have become necessary. However, though many attempts have been made to accomplish such countermeasures, the effective protection against these acts is still insufficient.
    As a result, the number of patents related to this field has recently increased dramatically.
    This paper is a summary of the patents and describes the technological trends on the anti-photocopying paper.
  • 岡田 英三郎
    1992 年 46 巻 6 号 p. 733-743
    発行日: 1992/06/01
    公開日: 2009/11/16
    ジャーナル フリー
  • その1 産業廃棄物の排出・処分・利用状況について
    環境技術委員会
    1992 年 46 巻 6 号 p. 744-759
    発行日: 1992/06/01
    公開日: 2009/11/16
    ジャーナル フリー
    1. The total production of industrial waste is in bone dried base about 5% for the paper production.
    2. A quarter of the waste is used effectively.
  • 1992 年 46 巻 6 号 p. 760-769
    発行日: 1992/06/01
    公開日: 2009/11/16
    ジャーナル フリー
  • 赤外およびラマン分光分析
    磯貝 明
    1992 年 46 巻 6 号 p. 770-775
    発行日: 1992/06/01
    公開日: 2009/11/16
    ジャーナル フリー
  • 木材科学委員会
    1992 年 46 巻 6 号 p. 776-788
    発行日: 1992/06/01
    公開日: 2009/11/16
    ジャーナル フリー
    紙パルプ技術協会木材科学委員会では, 昨年に引き続き大学・官公庁研究機関のご協力により研究題目及び費目の調査を行いました。今回は, 出来るだけ最近の研究題目を掲載するために調査時期を変更しましたので, 平成2年度及び3年度の内容をご紹介致します。
  • 山田 卓良
    1992 年 46 巻 6 号 p. 789
    発行日: 1992/06/01
    公開日: 2009/11/16
    ジャーナル フリー
  • 江前 敏晴, 稲田 宏之, 尾鍋 史彦, 臼田 誠人
    1992 年 46 巻 6 号 p. 790-798
    発行日: 1992/06/01
    公開日: 2009/11/16
    ジャーナル フリー
    As for mechanism of liquid penetration, Lucas-Washburn's equation has been applied for years. Oil penetration is sure to be suited to this equation. But, water tends to deviate from it, which was confirmed also by the authors with weakly-sized paper. One of the main reasons for this is swelling. Swelling means the phenomenon of increasing volume when the material absorbs liquid. In case of paper it actually appears as increase in thickness including structural change resulting from interfiber debonding.
    In the present study, we aim at measuring rapid thickness increase of paper precisely. For this purpose an new system for measuring thickness change was experimentally created using a differential transforme How swelling is involved in liquid absorption mechanisms was discussed in comparison with the data obtained by traditional Cobb's method and the results showed that
    1. Rapid increase in paper thickness just after contact with water was able to be measured continuously with newly-developed differential transformer system.
    2. Capillary absorption following by swelling occurs for sized paper from the result of comparison between water absorption volume and thickness increase measured with a using a differential transforme system.
    3. Thickness increase measured with a differential transformer system did not correspond to Bristow's curve because of difference in penetration way. Therefore, simultaneous measurement system of thickness and absorption volume is required.
  • DEZ 処理法の検討
    山崎 洋一, 佐藤 礼子, 春永 理恵, 岡山 隆之, 大江 礼三郎
    1992 年 46 巻 6 号 p. 799-806
    発行日: 1992/06/01
    公開日: 2009/11/16
    ジャーナル フリー
    So called acidic paper is vulnerable to aging. To control degradation, there are two ways. One is to make neutral paper and another is to neutralize acidic paper. Several processes for neutralization or deacidification have been proposed. Mass deacidification by diethyl-zinc was patented by the Library of Congress, U. S. A.
    The authors have been studying the diethyl-zinc process in detail. The effects of the process on retention of various properties on papers from 65 books published since 1911, as well as five different papers were investigated through an accelerated aging at 80°C and 80% R. H., and following results were obtained.
    (1) No significant change in strength and optical properties was noticed on papers after diethyl-zinc treatment before aging.
    (2) Diethyl-zinc was effective to reserve strength such as MIT fold under a tention of 300 gf after two weeks accelerated aging, but seemed ineffective in some cases of aged papers. However, it was found still effective when MIT fold was measured under a tension of 20 gf.
    (3) So far retention of brightness after an accelerated aging, the diethyl-zinc treatment seemed about ineffective to aged papers.
  • 1992 年 46 巻 6 号 p. 807-812
    発行日: 1992/06/01
    公開日: 2009/11/16
    ジャーナル フリー
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