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35 巻, 8 号
選択された号の論文の12件中1～12を表示しています
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近藤 民雄1981 年 35 巻 8 号 p. 657-667
発行日: 1981/08/01
公開日: 2009/11/13
ジャーナル フリーThe literature on the effect of wood-softness on the property of highyield pulps can be summarized into the following three points.
1) Wood-softness is an index showing whether the wood is adequate material for highyield pulp. At the same time it provides information on how treatment such as heating or chemical treatment should be applied. An example of an index of softness is viscoelastic property, e. g., the modulus of stiffness (G) and internal friction (Λ).
2) Soft wood and soft fibrous cells, or softened wood and softened fibrous cells are more easily defibrated and finelly fibrillated than other wood and cells giving higher quality high-yield pulp.
3) Softness of wood plays adual role in energy consumption. That is, more energy is consumed when the wood is not too soft but less energy is required when the wood is softer.抄録全体を表示PDF形式でダウンロード (1752K) -
鈴木 卓1981 年 35 巻 8 号 p. 668-684
発行日: 1981/08/01
公開日: 2009/11/13
ジャーナル フリーThe report “Problems of Environmental Policy in 1980s” has been published recently and the importance of attempting to secure “Safety of Environment” is stressed in it.
The impact of chemical substances on environment is attracting attention of many countries in the world and they are conducting preassessment of safety of chemical substances while making preparation for legislation concerning them.
Further, such international organizations as OECD, WHO and UNEP are each carrying on vigorous activities concerning this problem according to the respective objects of their establishment.
The pulp and paper industry uses various chemical substances and, moreover, various substances are generated in their production processes. Therefore, a through investigation and a constant monitoring concerning them are essential for the industry.
In this paper, I will introduce readers to an outline of the future problems of environmental policy and main points of the report on chemical assessment.抄録全体を表示PDF形式でダウンロード (2754K) -
1981 年 35 巻 8 号 p. 685
発行日: 1981/08/01
公開日: 2009/11/13
ジャーナル フリーPDF形式でダウンロード (141K) -
特種製紙 (株) 岐阜工場特種製紙株式会社1981 年 35 巻 8 号 p. 686-692
発行日: 1981/08/01
公開日: 2009/11/13
ジャーナル フリーTokushu Paper Mfg. Co., Ltd., founded in 1926, is presently numbered among the most unique paper makers in Japan. It has two mills, one in Mishima and the other in Gifu. Mishima Mill is located at the foot of Mt. Fuji in Shizuoka Prefecture and Gifu Mill introduced here is situated in Gifu Prefecture, which is one of the most famous forest arears in Japan.
The mill, which has five paper making machines, produces more than one thousand variations of fine papers depending on customer's requirements. The current paper production is 1, 000 metric tons per month. These speciality papers have provided good appearance and satisfaction as artistic printing paper for users in Japan, as well as overseas'.
The mill has about 25, 000m2 site and 250 skilled employees.抄録全体を表示PDF形式でダウンロード (13270K) -
古原 洋一郎, 高橋 昭之介1981 年 35 巻 8 号 p. 693-702
発行日: 1981/08/01
公開日: 2010/01/29
ジャーナル フリーVisual quality of offset print on a art-grade coated paper was analyzed to define a group of constituent quality elements including print gloss, print density in solid and tone gradation areas, print dot reproduction in terms of percent dot gain, inter-dot and intra-dot density variations, degree of dot definition and stain around dots, color balance among cyan, magenta and yellow inks, and color trapping. Possibility of developing a system of instrumental measurements for quantitative evaluation of print quality is discussed based on comparisons between Visual observations and the results of measurements specifically designed for the individual quality elements.抄録全体を表示PDF形式でダウンロード (1135K) -
数森 康二, 内藤 勉, 臼田 誠人, 門屋 卓1981 年 35 巻 8 号 p. 703-712
発行日: 1981/08/01
公開日: 2010/01/29
ジャーナル フリーThe quality of paper is often evaluated by handle even today. Bending stiffness is said to be one of the most important factors for handle. In this paper the relationship between sensory test and bending properties of paper is investigated statistically. In addition a simple method to observe the liveliness of paper is proposed.
The experimental results using handsheets reveal that bending stiffness can not always represent satisfactorily the handle of paper. One of the reason is that the component E and I of bending stiffness El are different for different paper of same bending stiffness. Three kinds of bending testers which are different in measuring principle are used in order to investigate the handle of commercial paper : Taber, Clark stiffness tester and KES-FB 2 pure bending tester. The highest correlation coefficient is obtained between handle and formula Sm2/d.
Sm : maximum bending moment at the curvature of 2.5 cm-1
d : thickness
The term liveliness is used in handle of fabrics, which implies the bending recovery character. The liveliness of paper is examined. The immediate bending recovery time is highly correlated with bending stiffness for commercial paper.抄録全体を表示PDF形式でダウンロード (3088K) -
第4報 : 古紙回収再利用システムの動的モデルによる将来予測吉田 総夫, 大野 弘, 梶原 惇, 橋本 伊織, 塩谷 捨明, 高松 武一郎1981 年 35 巻 8 号 p. 713-723
発行日: 1981/08/01
公開日: 2010/04/23
ジャーナル フリーA dynamic model of the national level was developed in the 1st report so as to simulate the behaviour of the waste paper recycling system and to clarify the real issue in this system. In this report, the dynamic simulation on the future trend of waste paper recycling and utilization is carried out based on the developed model and at the same time, the policy that will be the most promising in order to promote the waste paper recycling is made clear.
The following practical measures for the reconciliation of the problem of future waste paper supply and requirement are considered :
(i) To increase the collection of waste paper by steadily rising the price of waste paper ;
(ii) To increase the recovery rate by consolidating the structure of the waste paper collection system ;
(iii) To compensate for the domestic shortage of waste paper by importing it from abroad ;
(iv) To decrease the paper production at the manufacturer by importing paper and board from abroad.
Then, the forecasting of the future trend ranging over from 1979 to 2001 A. D. is performed by carring out the quantitative assessment for these four measures. As a result, it is concluded that the most effective and desirable countermeasure for overcoming the anticipated shortage of waste paper supply in the future is to increase the recovery rate of waste paper up to 60% by revising and consolidating the collection sector.抄録全体を表示PDF形式でダウンロード (1212K) -
E. J. Carver, MoDo Chemetics, Vancouver Gee, R. E. Chamberlain, 王子 魚山1981 年 35 巻 8 号 p. 724-730
発行日: 1981/08/01
公開日: 2010/01/29
ジャーナル フリーPDF形式でダウンロード (2350K) -
1981 年 35 巻 8 号 p. e1a
発行日: 1981年
公開日: 2009/11/13
ジャーナル フリーPDF形式でダウンロード (96K) -
1981 年 35 巻 8 号 p. e1b
発行日: 1981年
公開日: 2009/11/13
ジャーナル フリーPDF形式でダウンロード (96K) -
1981 年 35 巻 8 号 p. e2a
発行日: 1981年
公開日: 2010/01/29
ジャーナル フリーPDF形式でダウンロード (47K) -
1981 年 35 巻 8 号 p. e2b
発行日: 1981年
公開日: 2010/01/29
ジャーナル フリーPDF形式でダウンロード (47K)
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