巻号一覧
前身誌
47 巻, 4 号
選択された号の論文の11件中1～11を表示しています
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パルプ内腔及び細胞壁細孔の利用について藤原 勝壽1993 年 47 巻 4 号 p. 437-448
発行日: 1993/04/01
公開日: 2009/11/19
ジャーナル フリーThis review is of the research and development of inorganic filler composite pulps prepared by either lumen loading or micropore loading. These composite pulps are not only valuable for high performance paper but also suitable for environmental harmony due to its biodegradability and recyclability.
This paper reports four kind of pulp and papers, i. e. (1) fiber lumen loaded with titanium dioxide by high turbulence (2) fiber lumen loaded with ferrite by high turbulence (3) fiber lumen loaded with ferrite by in situ chemical reaction and (4) fiber micropore loaded with nickel carbonate and calcium carbonate by precipitation method.
It was suggested that the inorganic filler composite pulps should be of practical use for high performance papers in the future.抄録全体を表示PDF形式でダウンロード (3328K) -
倉根 隆一郎1993 年 47 巻 4 号 p. 449-459
発行日: 1993/04/01
公開日: 2009/11/19
ジャーナル フリーRhodococcus erythropolis produces a kind of microbial flocculant. This bioflocculant was able to efficiently flocculate all the suspended solids tested in an aqueous solution. Among those tested were microorganisms such as E. coli and baker's yeast, activated sludge, algae, kaolin clay, muddy water, river bottom sediment, ash and charcoal powder. The bioflocculant NOC-1 from Rhodococcus erythropolis has a wide flocculating activity against both organic and inorganic materials.
From an aqueous solution of a water soluble pigment, removal of the water soluble pigment was attained by the bioflocculant NOC-1. The bioflocculant NOC-1 was able to efficiently flocculate and precipitate the soluble pigment in an aqueous solution tested. Among those efficiently tested were black ink, melanoidin pigment (blackish brown pigment) and black colored pigment of the black liquor of pulping industry.
This bioflocculant was purified, and was found to be composed mainly of protein. This bioflocculant is biodegradable flocculant which causes no problem of environmental pollution.抄録全体を表示PDF形式でダウンロード (5990K) -
実機印刷による基礎検討山崎 健一, 石川 哲雄, 服部 芳彦1993 年 47 巻 4 号 p. 460-464
発行日: 1993/04/01
公開日: 2009/11/19
ジャーナル フリーEffects of latex Tg, starch level in color recipe and interval time between coating and drying on offset print mottle were studied. Coating colors were coated by a SDTA pilot coater. Coated samples were printed by RI print tester and commercial sheet-fed offset press and print mottle tendencies were evaluated. Starch and latex contents at coated surface were measured and relationships between print mottle and the surface binder contents were discussed. Temperature at the coated surface during drying process was measured and the influence of latex film formability on print mottle was also discussed.抄録全体を表示PDF形式でダウンロード (2135K) -
新しい漂白シーケンスへの応用ラシュナル D., ワーブル F., ダミエンス P., レドン H.1993 年 47 巻 4 号 p. 465-471
発行日: 1993/04/01
公開日: 2010/04/23
ジャーナル フリーThe major changes occurring in lignin during H2O2 bleaching of mechanical pulp under conventional conditions (70°C ; 5% H2O2) were investigated by thioacidolysis. The only detected change was the degradation of some carbonyl groups, likely by the HOO- anion. The main interunit bonds in lignin were left unaffected. As a consequence no delignification is expected when H2O2 is applied on a kraft pulp unless the conditions are modified. Delignification occurred at 90°C but the cellulose molecules were damaged. A dramatic improvement was observed when part of the metal ions present in pulp was removed by an EDTA pretreatment. Since at the same time, delignification, brightness and DP of cellulose were increased it is likely that the anion HOO- was still playing a key part in the process. It was shown that H2O2 (P) under these conditions can be advantageously combined with O2 (O) in O/P or O-P type treatments. Bleaching sequences like OPD (D for ClO2) or OPZ (Z for ozone) were investigated.抄録全体を表示PDF形式でダウンロード (988K) -
福田 格, 藤沢 勝美, 小松 敏勝, 丸谷 修平1993 年 47 巻 4 号 p. 472-479
発行日: 1993/04/01
公開日: 2009/11/19
ジャーナル フリーThe “RGP 76 CD Refiner” that was installed in Kushiro Mill Jujo Paper Co. Ltd. first in Japan, has been successfully operating since January 1991.
This report is described its operating experience.抄録全体を表示PDF形式でダウンロード (960K) -
今 隆, 勝部 良次郎, 吉本 一馬1993 年 47 巻 4 号 p. 480-494
発行日: 1993/04/01
公開日: 2009/11/19
ジャーナル フリーPDF形式でダウンロード (2139K) -
1993 年 47 巻 4 号 p. 495-504
発行日: 1993/04/01
公開日: 2009/11/19
ジャーナル フリーPDF形式でダウンロード (14977K) -
山田 卓良1993 年 47 巻 4 号 p. 505
発行日: 1993/04/01
公開日: 2009/11/19
ジャーナル フリーPDF形式でダウンロード (253K) -
佐渡 篤, 桜井 邦夫, 大橋 隆, 松井 満1993 年 47 巻 4 号 p. 506-516
発行日: 1993/04/01
公開日: 2009/11/19
ジャーナル フリーWhatman # 1 filter paper, handsheet from softwood bleached sulfate pulp (abbreviated as NBKP hereafter), handsheet from thermomechanical pulp (abbreviated as TMP hereafter) and regenerated cellulose film were treated with 401 watts/m2 of corona discharge for the duration of 0 to 180 min. Some changes were examined in the SEM images of the cellulose fibre sheets, in the sheet strength and in the sheet porosity by the increase in the duration of the corona treatment. The following results were obtained.
(1) The SEM images changed with the Whatman # 1 filter paper, the handsheet from NBKP and the handsheet from TMP. That is, perforation or boring occurred in the case of the higher duration of 30 min. and 60 min. But, no changes occured with the regenerated cellulose film, as the duration of the corona treatment increased.
(2) The tensile index and Young's modulus of the fibre sheets decreased gradually but significantly with the increase in duration of the corona discharge treatment. At that time, the zero span tensile strength also decreased slightly. The tensile index and tensile modulus decreased also in the case of regenerated cellulose film with the increase in the duration.
(3) As the duration of corona treatment increased, the cellulose fibre sheets became more permeable. The porosity and mean pore radius obtained by the mercury intrusion method also increased with the increase in the duration. However, no changes occured in permeability with the regenerated cellulose film, even in the duration of 180 min.
From the above-described facts, the corona-induced defects is considered to partly bring about the decrease in the cellulose fibre sheet strength.
Another mechanism should be considered further from the fact that the tensile strength and the tensile modulus decreased with the increase in the duration for the regenerated cellulose film. A certain fraction of the more microscopical framework which resists against an external force, must be degradated by the oxidation processes. Both mechanism are proposed to affect the reduction in cellulose sheet strength by the corona treatment for a long duration. At the present state, the importance of the two mechanisms cannot be estimated for the reduction in the sheet strength.抄録全体を表示PDF形式でダウンロード (8007K) -
第3報片面段ボールの場合松島 成夫, 矢野 忠, 松島 理, 横田 俊昭1993 年 47 巻 4 号 p. 517-528
発行日: 1993/04/01
公開日: 2009/11/19
ジャーナル フリーRelations between the strengths of single-faced corrugated fiberboard and the shapes or Young's modulus of the kraft liner (KL) and the semichemical corrugated medium (SCP medium) are analyzed under the uniform bending around the moment axis in the machine direction. Values of EfS (bending strength per unit mass for SCP medium) and Eks (strength per unit mass for KL) are discussed.
Obtained results are as follows;
(1) Absolute maximum stresses σsmax and σkmax of SCP medium (CM) and KL decrease with the increase of thickness Ts and wave height h for CM and thickness Tk for KL, and also increase with the increase of wavelength L for CM.
(2) σsmax decreases and σkmax increases with the increase of Young's modulus Ek for KL.
(3) Efs decreases initially and comes to increase gradually with the increase of T. On the contrary, EfS increases at first, then turns to decrease gradually with the increase of L. Efk increases with the increase of Ts and decreases with the increase of L. Efs increases and Efk decreases with the increase of Ek and Tk.抄録全体を表示PDF形式でダウンロード (1545K) -
塗布液にバクテリアセルロースを含有させた塗工紙の製造方法山川 茂1993 年 47 巻 4 号 p. 529-537
発行日: 1993/04/01
公開日: 2009/11/19
ジャーナル フリーPDF形式でダウンロード (1367K)
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