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35 巻, 12 号
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三津 義兼1981 年 35 巻 12 号 p. 1031-1037
発行日: 1981/12/01
公開日: 2009/11/13
ジャーナル フリーPDF形式でダウンロード (994K) -
長谷川 久1981 年 35 巻 12 号 p. 1038-1043
発行日: 1981/12/01
公開日: 2009/11/13
ジャーナル フリーJapanese pulp and paper industry has been closely depended on the packaging industry for the reason of increasing GNP.
In this paper, the future trends of the consumer packaging, especially liquid containers enclosing milk, juice, sake and other drinking liquids are discussed from the view point of pulp and paper industry in Japan.
It is observed that the total sheare of the milk container of 5001, 000 ml has almost distributing in Japanese families.
On the other hand, it is considered that the demands of small size milk container enclosing about 200 ml shall be further increased in future because of the special needs of Japanese market.
In addition, the juice or sake containers are rapidly increasing new market for Japan.
It is considered that the liquid containers based on paperboard should not only be reseached from barrier mechanizms but be developed from functional properties in order to activate the weaker point rather than stronger point.
It shall be considerable difficult in economically that the Japanese pulp and paper industry munufactures the base paper for liquid container in future, however, there is possibility that the liquid containers shall be manufactured by overseas paper mill based on the domestic specifications.抄録全体を表示PDF形式でダウンロード (1082K) -
1981 年 35 巻 12 号 p. 1044
発行日: 1981/12/01
公開日: 2009/11/13
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古野 清一1981 年 35 巻 12 号 p. 1045-1048
発行日: 1981/12/01
公開日: 2009/11/13
ジャーナル フリーGenerally speaking, an earthworm swallows daily its own weight (0.4 g) of feeding-stuffs. Thus, 5, 000 worms consume 20 tons of organic feeding-stuffs and the half amount, that is, 10 tons of castings is excreted. In a place of severe weather condition, however, the above figures could not be expected without any special man-power treatment.
As for the feeding-stuffs of earthworms, the cellulose, which is resolved into sugar by the earthworm's internal ferment, properly mixed with cow or horse manure, food waste or activated sludge that contains enough starch and protein, is ideal. Those organic wastes are found with ease and are nation-wide enormous in their quantity. It is quite meanful that we reform such wates into the fertile soil. Further, the worm itself can be utilized as the feeding-sutffs for some fish farms :抄録全体を表示PDF形式でダウンロード (7580K) -
(株) 巴川製紙所用宗工場株式会社巴川製紙所1981 年 35 巻 12 号 p. 1049-1056
発行日: 1981/12/01
公開日: 2009/11/13
ジャーナル フリーTOMOEGAWA PAPER CO., LTD., established in 1914, has one head office in Tokyo and three mills (Mochimune mill, Shimizu mill, Shingu mill).
Mochimune mill, which we are going to introduce in this article, is located in Shizuoka City, Shizuoka Prefecture, Japan.
This mill was constructed in 1933.
This mill presently possesses three Fourdrinier machines, three Cylinder machines, and one combination machine and the main products lines are as follows : Insulating Papers (Power Cable Papers, Telephone Cable Papers, Condenser Papers, Coil Papers), Speciality Paper for Information Interchange, Tracing Papers, Release Papers, Wrapping Papers and other Specialities.
This mill has a capacity of 3, 500 tons per month of paper.
The site for this mill is about 156, 000 m3 and the number of employee is around 500.抄録全体を表示PDF形式でダウンロード (10196K) -
リサイクルによる細孔容積の変化岡山 隆之, 北山 拓夫, 大江 礼三郎1981 年 35 巻 12 号 p. 1057-1062
発行日: 1981/12/01
公開日: 2010/01/29
ジャーナル フリーCommercial hardwood and softwood sulphate pulp sheets, which were deaten to about 350 ml C. s. f., were subjected to recycling of a sequence of defibration, bewatering at 80°C for 6 days as flake upto five times.
Inaccessible water or pore volume by Scallan's solute exclusion method was measured on recycled fibres, as well as the water retention value by centrifugal force., Following results were obtained.
(1) The fibre saturation point, which was defined as the amount of inaccessible water measured by dextran corresponding to 560 Å molecular diameter, of pulp fibres before beating, beaten, and recycled for one and five times were 1.14, 1.39, 0.90 and 0.86 ml/g for the hardwood pulp and 1.12, 1.59, 1.16, and 0.86 ml/g for the softwood pulp.
(2) Smaller pores less than 50Å in the hardwood pulp fibres seemed unaffected by recycling. However, such smaller pores in the softwood pulp fibres diminished after the first recycling.
(3) The magnitude of centrifugal force necessary to expel absorbed water from cell walls to reach the fibre saturation point increased with recycling times. This means pore diameters in cell walls of pulp fibres decreased with recycling.抄録全体を表示PDF形式でダウンロード (740K) -
抄繊糸への易溶性ビニロン繊維の利用について (予備実験)山田 都一, 枝広 瑶子1981 年 35 巻 12 号 p. 1063-1073
発行日: 1981/12/01
公開日: 2010/01/29
ジャーナル フリーA preliminary experiment was carried out to determine the effects of Hardly Soluble Vinylon fiber and Readily Soluble Vinylon fiber when blended into raw paper for the Japanese paper yarn, and the results are as follows.
1) The raw paper was strengthened by blending Vinylon fiber with N·UKP, especially Readily Soluble Vinylon fiber. But, when twisted into yarn, the tensile strength decreased more than that of the non-blended yarn as times of twist given to the yarn increased, provided that the Vinylon fiber content was within the limit of this experiment. In other words, the tensile strength is high when twisted a few times, whereas the tensile strength is low when twisted many times, due to damages given to the yarn by twisting.
2) Therefore, when twisting the Vinylon fiber blended yarn, an ample amount of water must be given to soften the paper.
3) The tensile strength of the raw paper blended with 1 d-5 mm Hardly Soluble Vinylon fiber was stronger than that of the paper blended with 3 d-15 mm Hardly Solubly Vinylon fiber, but the tensile strength of the yarn blended with 3 d-15 mm Vinylon fiber was stronger than that of the yarn blended with 1 d-5 mm Vinylon fiber. In other words, when twisted, the thicker and the longer a fiber was, the stronger the yarn became.抄録全体を表示PDF形式でダウンロード (1213K) -
木材科学委員会1981 年 35 巻 12 号 p. 1074-1080
発行日: 1981/12/01
公開日: 2009/11/13
ジャーナル フリー木材科学委員会は, その活動を通じてパルプ, 漂白及び抄紙科学の発展, さらに今後に期待されるウッドケミカルスの開発に寄与する目的で設置され, 今日にいたりました。
今回, 本委員会では産・学・官における情報交換の推進を目的として, 昭和55年度における大学・官公庁研究機関の研究題目, 研究費目などの調査を行ないましたので, 以下に御紹介致します。抄録全体を表示PDF形式でダウンロード (1160K) -
1981 年 35 巻 12 号 p. 1088
発行日: 1981/12/01
公開日: 2009/11/13
ジャーナル フリーPDF形式でダウンロード (87K) -
海技術ニュース外 未来への挑戦Krister Lundberg1981 年 35 巻 12 号 p. 1089-1095
発行日: 1981/12/01
公開日: 2009/11/13
ジャーナル フリーPDF形式でダウンロード (2516K)
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