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Volume 17, Issue 12
Displaying 1-8 of 8 articles from this issue
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[in Japanese]1963 Volume 17 Issue 12 Pages 762-763
Published: December 20, 1963
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESSDownload PDF (448K) -
Haruji Kato1963 Volume 17 Issue 12 Pages 764-768
Published: December 20, 1963
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESSOn analysis of old handmade paper which has been made in the centuries between 15th and 18th, I made an investigation on the subject of vicissitude in the progress of paper manufacture.
The development of working technique of paper manufacture was tolerably notable in 1550 especially on medium and their paper and then it was improved step by step. Most excellent paper appeared on Keicho and Genbun era (16001750).
A fatal defect of the technique on old paper manufacture is a beating process for raw material and it's the couse of the blemish of the paper on which surface still remains a raw fibre. Moreover, there are no standardized size fos breadth and thickness of the paper.View full abstractDownload PDF (996K) -
Part II. On the Reaction of Dialdehyde Starch with Urea, Guanidine and DicyandiamideKei Ohmae, Mitsumasa Inano, Mitsuru Kondo, Masaaki Okane1963 Volume 17 Issue 12 Pages 769-773
Published: December 20, 1963
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESSDialdehyde starch has been reacted with urea, guanidine and dicyandiamide respectively in various conditions.
It has been found that one to three molecules of urea are combined with four aldehyde groups of two structural units of dialdehyde starch, if 98% and 50% methanol solutions is used as a solvent and sulfuric acid as a catalyzer. The product of the reaction of two to three hours at 65°C has not found to colorize and swell.
Guanidine has not been found to react with dialdehyde starch so much.
Dicyandiamide has been found to react with dialdehyde starch in the similar condition, and one to two molecules of dicyandiamide combine to ten structural units of dialdehyde starch.
The reaction products are hoped for many interesting applications in paper industry.View full abstractDownload PDF (822K) -
On the Softening Point and Particle Size Distribution of Various N-methoxymethylated Polyamid Resins in the Manufacture of Nylon Paper.Rokuro Maematsu, Kazutoshi Miyagawa1963 Volume 17 Issue 12 Pages 774-778
Published: December 20, 1963
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESS“Teisan” has developed a new form of binder, identified as a toresin, specifically designed for nylon paper.
The particle of various toresin (n-methoxymethylated polyamid resins) is manufactured in experimental.
The softening point and particle size distribution of various toresin and 201 fibrid have been measured and discussed.
The results are described in the Table 1, 3, 4, 5.
Figure 1, 2, 3 shows a photomicrograph of 201 fibrid and Figure 4 toresin ex. 11.
The softening point and particle size distribution of methoxymethyl radical 14 mol % of toresin, ex. 33 passing through 70 mesh screen is similar to beaten fibrid.View full abstractDownload PDF (906K) -
Part II. The Design of the Automatic SorterT. Kadoya, T. Niwa, S. Mizuko1963 Volume 17 Issue 12 Pages 779-784
Published: December 20, 1963
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESSWe have already reported the basic problems on the optical flying image method by scanning and optical multiple photocells in the previous paper.
In this paper, we have designed the working equipment for the detection of the flaws in a moving web of paper in according to the basic acknowledgement.
To eliminate the noise from photo multiplier, we have introduced the coincidence method and discriminator circuits on the optical flying image method.
In the optical multiple photocells method, we have been able to pick up the available output signals by using the discriminator and OR circuits.
These two equipments have been tested on the industry paper machine and we get the satisfactory results.View full abstractDownload PDF (1214K) -
I. Influence of the Addition of Readily Soluble and Hardly Soluble Vinylon on the Properties of Kraft PaperKenich Tanabe, Unpei Maeda, Sadamaru Miyazaki, Akio Mitamura1963 Volume 17 Issue 12 Pages 785-791
Published: December 20, 1963
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESSInfluence of the addition of the two types of vinylon for papermaking, readily soluble fibers and hardly soluble fibers, to kraft paper on the properties of the paper was examined.
The addition of the hardly soluble fibers to kraft paper improved the tear factor of the paper, and the effect was greater as the fiber length was longer.
The addition of the readily soluble fibers improved tensile, burst and folding strengths, and the effect was greater as the fiber length was shorter and the denier was finer.
By means of mixing the hardly soluble fibers to highly beaten pulp, paper being superior in not only tensile strength but also tear strength was made.View full abstractDownload PDF (1149K) -
L. Eberhardt, [in Japanese]1963 Volume 17 Issue 12 Pages 792-800
Published: December 20, 1963
Released on J-STAGE: November 10, 2009
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[in Japanese]1963 Volume 17 Issue 12 Pages 801-808
Published: December 20, 1963
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESSDownload PDF (1622K)
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