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-On the Optimization of cocoon cooking by the apprication of Reeling Tention of Thread-
HARUO KINOSHITA, FUMIAKI TAJIMA, TAKAKO MIYAJIMA, MEGUMI SIMADA
1993 Volume 2 Pages
1-6
Published: December 03, 1993
Released on J-STAGE: February 16, 2013
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FUMIAKI TAJIMA, HARUO KINOSHITA
1993 Volume 2 Pages
7-11
Published: December 03, 1993
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TSUNEKO AKAHANE, KOZO TSUBOUCHI
1993 Volume 2 Pages
12-18
Published: December 03, 1993
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Bai Lun
1993 Volume 2 Pages
19-25
Published: December 03, 1993
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SHIGETO SHIMIZU, MASANOBU OHURA
1993 Volume 2 Pages
26-30
Published: December 03, 1993
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YOSHIO ISHIGURO, TAKEO KOUZU, SHOEI ISHII
1993 Volume 2 Pages
31-37
Published: December 03, 1993
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The test of cleanness and neatness or evenness variation for raw silk has been currently made through eye-check on seriplain panels. However, there are many problem matters such as maintaining the objectivity of inspection, training of inspectors, require many persons for this testing etc. on the other hand. The alternative means with electronics technology has been required for the improvement on this kind of test.
For example of alternative means, semiconductor laser sensor has been used for the test of cleanness and neatness, and the device with CCD line sensor has been worked out for the test of evenness variation. The probability of turning to practical use on those devices was obtained through comparing the new method to the current test method (eye-check on seriplane panels) with repeat of needed experiments.
The research is now on the way to the goal of turning the devices to practical use with improving the test accuracy and the collecting method of sample skeins.
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AKIRA AOKI, TOSHIAKI NASU, FUJIE HAISHIMA, YASUO NAKAJIMA
1993 Volume 2 Pages
38-45
Published: December 03, 1993
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HIROSHI KATO, TUNEKO AKAHANE, MASAHIRO OBO
1993 Volume 2 Pages
46-50
Published: December 03, 1993
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YUTAKA KAWAHARA
1993 Volume 2 Pages
51-53
Published: December 03, 1993
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SHINICHIRO HIRAIDE, HIDEAKI TAKAGI
1993 Volume 2 Pages
54-59
Published: December 03, 1993
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DAIJIROU AKIYAMA, KIYOSHI HIRADAYASHI
1993 Volume 2 Pages
60-67
Published: December 03, 1993
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Molded silk was prepared from the powder of silk yarn. It was found that the properties of this molded silk were influenced by the properties of fibroin powder.
Two methods for the preparation of silk powder had been studied. In calcium chloride method, very little breakage in the molecules of fibroin were observed and the molecules took random coil structure. It was found that the relatively high crystalline powder could be produced due to destruction of non-crystalline part of fibroin by sulfuric acid treatment.
But the longer treatments with sulfuric acid damaged the crystalline part and the strength of the molded products decreased. Treatment with sulfuric acid for 2 hours was most suitable for silk molding. It was found that the strength of molded product was high when the fibroin powder contained 8% water molecules. Treatment for 30 minutes at 120°C under a pressure of 1 ton/cm
2 were the best conditions.
The silk molding has a strength of only about one-third that of polyamide resin, which was not sufficient for practical use. Moreover cracking appears in the molding when immersed in water, and this may become a problem to be solved when used in practice. Therefore, silk powder was chemically modified with methacrylic acid ester (MMA : Methylmethacrylate, GMA : Glycidylmethacrylate). As a result, the water resistance of the molding was improved.
Furthermore, the GMA-silk mold acquired a strength comparable to ordinary plastics. It was found that the functional epoxy gorup was bonded with the C-terminal of the silk fibroin.
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[in Japanese], [in Japanese], [in Japanese]
1993 Volume 2 Pages
S1-S2
Published: December 03, 1993
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[in Japanese], [in Japanese], [in Japanese]
1993 Volume 2 Pages
S3-S4
Published: December 03, 1993
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[in Japanese], [in Japanese], [in Japanese]
1993 Volume 2 Pages
S5-S6
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[in Japanese], [in Japanese], [in Japanese]
1993 Volume 2 Pages
S7-S8
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[in Japanese], [in Japanese], [in Japanese]
1993 Volume 2 Pages
S9-S10
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[in Japanese], [in Japanese]
1993 Volume 2 Pages
S11-S12
Published: December 03, 1993
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[in Japanese]
1993 Volume 2 Pages
S13-S14
Published: December 03, 1993
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[in Japanese]
1993 Volume 2 Pages
S15-S16
Published: December 03, 1993
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
1993 Volume 2 Pages
S17-S18
Published: December 03, 1993
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
1993 Volume 2 Pages
S19-S20
Published: December 03, 1993
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
1993 Volume 2 Pages
S21-S22
Published: December 03, 1993
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[in Japanese]
1993 Volume 2 Pages
S23-S24
Published: December 03, 1993
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[in Japanese], [in Japanese], [in Japanese]
1993 Volume 2 Pages
S25-S26
Published: December 03, 1993
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[in Japanese], [in Japanese], [in Japanese]
1993 Volume 2 Pages
S27-S28
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[in Japanese]
1993 Volume 2 Pages
S29-S30
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[in Japanese], [in Japanese], [in Japanese]
1993 Volume 2 Pages
S31-S32
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[in Japanese], [in Japanese]
1993 Volume 2 Pages
S33-S34
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[in Japanese], [in Japanese], [in Japanese]
1993 Volume 2 Pages
S35-S36
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[in Japanese]
1993 Volume 2 Pages
S37-S38
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[in Japanese], [in Japanese], [in Japanese]
1993 Volume 2 Pages
S39-S40
Published: December 03, 1993
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
1993 Volume 2 Pages
S41-S42
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[in Japanese]
1993 Volume 2 Pages
S43-S44
Published: December 03, 1993
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[in Japanese], [in Japanese], [in Japanese]
1993 Volume 2 Pages
S45-S46
Published: December 03, 1993
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