巻号一覧
前身誌
39 巻, 8 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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塗料用原材料 (1) : ラテックス鴻野 銃二郎1985 年 39 巻 8 号 p. 723-732
発行日: 1985/08/01
公開日: 2009/11/16
ジャーナル フリーI have summarized the recent trends and current status of improvements and developments of coating materials. In this report I would like to specifically introduce those of SB latex in the first place.
Various improvements have been made on SB latex for getting not only adhesive function but also printabilities such as ink-receptibity, print gross, ink-set and blistering. In other words, optimum ratios of S to B have been established and unsaturated vinyl compounds containing several kinds of functional group have been introduced. And further such factors as gel percentage and particle size have been examined together.
As a result, the SB latex suitable for the use of sheet, web-offset and rotogravure printing has been developed in compliance with the quality requirements of printing papers.
In Japan, this SB latex is primarily used for the coated printing paper except for some special purposes.抄録全体を表示PDF形式でダウンロード (1360K) -
山田 博1985 年 39 巻 8 号 p. 733-746
発行日: 1985/08/01
公開日: 2010/02/09
ジャーナル フリーData are collected with regard to wetting in the papermaking and related fields for the purpose to aid research and practice in the future.
In this first part, following the fundamentals well known hitherto, surface-energetic values of wood fibers, synthetic fibers and filaments, fillers and pigments, and paper machine wire were presented together with those of auxiliaries for paper.抄録全体を表示PDF形式でダウンロード (1772K) -
富樫 文彦, 形部 健一1985 年 39 巻 8 号 p. 747-756
発行日: 1985/08/01
公開日: 2009/11/16
ジャーナル フリーIn this paper, following articles are briefly reviewed.
1) General chemicals of Surfactants used as Deinking Agent.
2) Function which required in Deinking Process.
3) Current of Deinking Agent.抄録全体を表示PDF形式でダウンロード (3972K) -
1985 年 39 巻 8 号 p. 770
発行日: 1985/08/01
公開日: 2009/11/16
ジャーナル フリーPDF形式でダウンロード (109K) -
第3報 マシン幅方向の変動を取扱えるモデル飯田 清昭1985 年 39 巻 8 号 p. 771-776
発行日: 1985/08/01
公開日: 2009/11/16
ジャーナル フリーIt is reported in Part I and Part II of this series that the computer model can simulate the web drying phenomena in a paper machine dryer section by feeding the several operating conditions at each cylinder The model, a simplified version in Part I, is now modified to evaluate the effects of the cross directional variations of operating conditions at each cylinder and simulate the resulting cross directional variations of web drying.
First, heat and mass transfers in a cross direction of a web within a web layer during drying are calculated and compared to those between a web and its surroundings, such as heat transfers from cylinder surfaces to a web and water evaporation from a web to atmospheres. It is found that the former are far much smaller than latter, and can be neglected in a drying process of a paper machine. In other words, a web can be regarded to be independent crosswise.
Then, based on these results, the model is extended to a following structure.
1. A cross direction is divided into a certain numbers of blocks.
2. The simulations, similar to those in Part I and Part II, are carried out at each block, using their own operating conditions. It means that every block of a web dries up independently each other throughout drying, depending only on it circumstances.
3. The results on each block are combined in parallel to give their profiles in a cross direction at any locations in a dryer section.
The simulated results by this model correspond well with various experiences in mill operations, which suggests that the model is reliable enough. So, this extended model will be further used in Part IV of the series to predict the effects of the cross directional variations of several operating conditions, like cylinder surface temperatures and cylinder pocket humidities, to web drying in some commercial paper machines.抄録全体を表示PDF形式でダウンロード (737K) -
紙の荷重-変形挙動に関する研究 (第2報)木村 実, 清水 弘1985 年 39 巻 8 号 p. 777-784
発行日: 1985/08/01
公開日: 2009/11/16
ジャーナル フリー紙中の低坪量部分の引張り変形中の挙動を明らかにすることは, 紙の破壊現象を解明するために非常に意義のあることである。しかし, 実際のシート中の坪量不均一分布は複雑なため, 地合むらを考慮しつつ紙の引張り挙動を解析的に記述することは不可能に近い。そこで, 本研究では非常に簡単なモデルを考え, 低坪量部分での応力集中度合に関する基本的な原理を見出そうとした。紙の中に一箇所低坪量部分を仮定し, 有限要素法を用いた引張り変形に関するシミュレーションを行った結果以下の結論が得られた。 (1) 低坪量部分がシートの最外層に存在すると応力集中が顕著であるが, これが少しでも内部に存在した場合, 応力集中はかなり緩和される。 (2) 荷重方向と直角に低坪量部分と隣接して高坪量部分が存在すると, 非常に顕箸な補強効果が認められた。しかし, これらが荷重方向に対し直列に配列している場合には、高坪量部分の存在は応力集中に対してむしろ逆効果であった。抄録全体を表示PDF形式でダウンロード (987K) -
吉原 一年, 赤松 勲, 上嶋 洋1985 年 39 巻 8 号 p. 785-791
発行日: 1985/08/01
公開日: 2009/11/16
ジャーナル フリーBiodegradation of lignin was investigated by usingCoriolus hirstusIFO 4917 and poplar wood meal (42-60 mesh). The optimum cultivation conditions were also studied.
Optimum temperature and pH were 35°C and 4.0 to 7.0, respectively. The optimum moisture content was ca. 54% (This value is equivalent to ca. 2 mlof the basal medium to ca. 1 g of poplar wood meal.). Under conditions above mentioned, about 25% of lignin was decomposed after ten days.
As a carbon source, carboxymethyl cellulose sodium salt (CMC) was most effective in the lignin decomposition by C. hirstus IFO 4917. By using CMC, lignin decomposition after 10 days increased to 27.4%. Two percent molasses was also effective as the carbon source.
For a nitrogen source, urea was the most effective one. Addition of 0.5% glucose as the carbon source and 0.2% urea as the nitrogen source to the basal medium increased poplar lignin decomposition to as much as 31.5% for 10 days. Amino acids such as L-Arginine, L-Asparagine, and L-Citrulline were also effective as another nitrogen source in lignin decomposition of poplar wood meal. These components are well known as the members of the urea cycle.抄録全体を表示PDF形式でダウンロード (1041K)
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