巻号一覧
前身誌
35 巻, 3 号
選択された号の論文の7件中1～7を表示しています
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鈴木 卓1981 年 35 巻 3 号 p. 215-234
発行日: 1981/03/01
公開日: 2009/11/13
ジャーナル フリー* Since the second oil crisis, worldwide interest in substitute energy resources is on the increase and above all utilization of biomass energy is especially highlighted.
* In Japan, a technical development and research association has been set up to implement a 7 year biomass project starting in 1980.
* The pulp and paper industry is the existing largest biomass industry and has longstanding experiences in this field such as production of alcohol and feed yeast from sulfite pulping waste liquor in its past.
* As for the problems of our industry connected with this in the future, it is hoped that R & D activities in order to enforce comprehensive utilization of wood including substitution of biomass energy for traditional energy resources as well as active exploitation of nonwood paper-making raw material fibres will be promoted.抄録全体を表示PDF形式でダウンロード (2449K) -
自動化委員会1981 年 35 巻 3 号 p. 235-252
発行日: 1981/03/01
公開日: 2009/11/13
ジャーナル フリーPDF形式でダウンロード (2243K) -
十条製紙 (株) 八代工場十条製紙株式会社1981 年 35 巻 3 号 p. 253-262
発行日: 1981/03/01
公開日: 2009/11/13
ジャーナル フリーYatsushiro Mill of Jujo Paper Co., Ltd. in Kyushu Island, which started its operation in 1924, has an integrated pulp and paper mill.
The paper mill manufactures fine paper, writings, post-card and newsprint with seven paper machines, two of which are twin-wire formers.
The pulp mill is composed of KP, GP, SP, CGP, and DIP lines.
The mill site area is about 432, 000m2 and the employees are 1, 050.抄録全体を表示PDF形式でダウンロード (13532K) -
原 啓志, 大江 礼三郎1981 年 35 巻 3 号 p. 263-269
発行日: 1981/03/01
公開日: 2009/11/13
ジャーナル フリーStrike-through, that is, print-through occurs by printing with carbon ink, was measured using an image analyzer and the relation between porous structure of paper and strike-through was studied.
The porous structure of papers were estimated from various testing, including scanning electron micrography and pore size distribution measurments by the mercury intrusionmethod.
The differences of paper properties before and after printing and the relation between porous structure of unprinted paper and strike-though were interpreted based on the theory of liquid penetration.
The quantative measurement of strike-through was able to estimate from results of image analysis. The distribution of strike-through, which could be indicated with the horizontal maximum chord length of a particle in strike-through assuming circular, was also estimated.
This distribution and the porous structure of papers with of about 10 μm and over in size were found well correlated each other as could be derived from the Lucas-Washburn equation on liquid penetration.
The features of sample papers concerning strike-through were as follows :
Woodfree paper (55 g/m2) could be estimated that more true pores pierced from one side to the other side of paper, as much strike-through were perceived.
Coated paper (87 g/m2) had few pores, which caused much less strike-through.
Newsprint (55 g/m2) had more pores, but strike-through were less.抄録全体を表示PDF形式でダウンロード (4818K) -
石川 久雄, 飯田 憲永, 大久保 克美, 沖 妙1981 年 35 巻 3 号 p. 270-279
発行日: 1981/03/01
公開日: 2009/11/13
ジャーナル フリーThe characteristic feature of lignin-retaining bleaching of high-yield pulps is that the higher brightness of the improved pulps is obtained without substantial loss in yield. Therefore, in both reductive and oxidative bleaching of this type, the brightness increase under defined conditions is fairly dependent of the initial pulp brightness. But, the increase of the brightness is the range of 8% to 15% GE.
A new bleaching of pine groundwood pulp by NaOCl·peroxicle systems was carried out. The brightness of the pulp bleached by NaOCl·H2O2 or NaOCl·O3 system under optimum conditions increased from 39% to 70-75% GE. The yield of bleached groundwood pulp was normally quantitative. The content of lignin residue in the bleached pulp was comparative high.
The pretreatment of groundwood pulp with NaOC1 prior to ozone bleaching led to faster decolorization than only ozone bleaching of the pulp under the same gaseous phase.抄録全体を表示PDF形式でダウンロード (1247K) -
門屋 卓1981 年 35 巻 3 号 p. 280-282
発行日: 1981/03/01
公開日: 2009/11/13
ジャーナル フリーPDF形式でダウンロード (3220K) -
盛下 勇氏1981 年 35 巻 3 号 p. 291
発行日: 1981/03/01
公開日: 2009/11/13
ジャーナル フリーPDF形式でダウンロード (242K)
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