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Fukushima-shi, Japan

Chiba T.,Rengo Co.
Kami Pa Gikyoshi/Japan Tappi Journal | Year: 2010

PM7 of Yashio Mill, Rengo Co., Ltd. produces corrugating medium ranging from 115 to 160 gsm. Since the commission of the machine in 1991, over 1,000 tpd of corrugating medium is distributed Japan-wide. In order to meet paper quality requirement and to improve the machine speed with the increased demands of lower basis weight paper, cross-direction moisture profile control system was installed. Control actuator selection was based on the compact design for the purpose of saving space. Also, cross-direction moisture profile control system supplied by YOKOGAWA Electric Corporation was installed after duly considering effective profile control at dryer rear part. This system by YOKOGAWA is the first to be used in the Japanese paperboard industry. Outline of the facilities, operational experience and installation achievements will be introduced below. Source

Shimizu M.,Rengo Co.
Journal of Packaging Science and Technology | Year: 2013

Several types of fiberboard and corrugated fiberboard were investigated about the effect of their surface infrared emissivity ranging from 9 to 90% on the heat transfer through the materials. A temperature-change evaluating instrument was used to measure the rise in temperature of water located in the instrument. Regarding fiberboard, the lower its infrared emissivity was, the better it inhibited the temperature rise. In the form of corrugated fiberboard, those with controlled infrared emissivity surfaces facing external side of the board showed a correlation between their infrared emissivity and an inhibitory effect on the temperature rise. In contrast, when the controlled infrared emissivity surfaces faced the adhered corrugating medium, the temperature-keeping effect was as low as ordinary corrugated fiberboard. Meanwhile, fiberboard with the lowest infrared emissivity, 9%, is manufactured by laminating with aluminum foil, thus hard to recycle. As a substitute, recyclable fiberboard with slightly higher infrared emissivity, 46%, was developed and examined. When this fiberboard is used in an AB-flute corrugated box to reduce the heat conductance, it can inhibit the heat transfer as well as an A-flute corrugated box using aluminum-laminated fiberboard. Therefore, it could be recommended as a recyclable cool-keeping corrugated box. Source

Nishikawa T.,Kyoto University | Nishikawa T.,Tottori Prefectural Agriculture and Forest Research Institute | Kido K.,Kyoto University | Kido K.,Rengo Co. | And 4 more authors.
Plant Production Science | Year: 2013

A field experiment assessing the effect of the annual application of anaerobically-digested cattle manure (ADM), produced at a biogas plant, on paddy rice was conducted. In plots with ADM (MF), the early growth of rice plants, from transplanting to the active tillering stage, was inhibited compared to the plots with chemical fertilizers (CF). This phenomenon was observed over many growing seasons and was especially obvious in nitrogen uptake and leaf area index (LAI). However, after panicle initiation, the growth of MF-treated plants was equal to or superior to CF-treated plants. The grain yield in all the MF plots was 96 - 105% of that in the CF plots. The inorganic nitrogen content of the soil in the MF plots was higher than that in the CF plots, which was contradictory to the growth inhibition observed in the initial growth of plants in the MF plots. In contrast, the oxidation/reduction potential and pH of the surface soil in MF plots were within the normal range, indicating that these soil factors were not associated with growth inhibition observed in MF plots. Our results implied that rice cultivars with a long growing period that are able to recover from the initial growth inhibition, such as medium or late maturing cultivars, are suitable for paddy rice production fertilized with ADM. Source

Hashimoto A.,Kyoto University | Hashimoto A.,Rengo Co. | Shimono K.,Kyoto University | Horikawa Y.,Kyoto University | And 6 more authors.
Carbohydrate Research | Year: 2011

This study reinvestigated the synthesis of cellulose in vitro with a well-known cellulose-producing bacterium, Gluconacetobacter xylinus. Alkylmaltoside detergents, which are more frequently used in recent structural biological researches, are uniquely used in this study to solubilize cellulose-synthesizing activity from the cell membrane of G. xylinus. Activity comparable to that previously reported is obtained, while the synthesized cellulose is crystallized into a non-native polymorph of cellulose (cellulose II) as well as the previous studies. In spite of this failure to recover the native activity to synthesize cellulose I microfibril in vitro, the product is a polymer with a degree of polymerization greater than 45 as determined by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOFMS). It was thus concluded that the established protocol can solubilize cellulose-synthesizing activity of G. xylinus with polymerizing activity. © 2011 Elsevier Ltd. All rights reserved. Source

Nakatsubo T.,Kyoto University | Nakatsubo T.,Rengo Co. | Ragamustari S.K.,Kyoto University | Ragamustari S.K.,Amano Enzyme Inc. | And 8 more authors.
Plant Biotechnology | Year: 2014

A novel type of O-methyltransferase (OMT) cDNA was isolated from maturing seeds of Carthamus tinctorius (safflower). The deduced sequence of the OMT protein showed moderate sequence identity (52%) with C. tinctorius 5-hydroxyconiferaldehyde O-methyltransferase 1 (CAldOMT1). Phylogenetic analysis showed that the novel OMT did not belong to the typical CAldOMT [=caffeic acid OMT (CAOMT)] cluster. The recombinant protein of the OMT catalyzed 3-(or 5-) O-methylation of hydroxycinnamaldehydes and hydroxycinnamyl alcohols, while it showed only weak or moderate activity toward hydroxycinnamates and hydroxycinnamoyl coenzyme A esters. Therefore, this OMT was designated as C. tinctorius 5-hydroxyconiferaldehyde/5-hydroxyconiferyl alcohol OMT (CtAAOMT). The time profile of CtAAOMT gene expression in C. tinctorius matched the patterns of lignin accumulation. Taken together, our data strongly suggest that along with CtCAldOMT1, CtAAOMT is involved in biosynthesis of syringyl lignin. © 2014, Japanese Society for Plant Cell and Molecular Biology. All rights reserved. Source

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