赤外線による線維の迅速乾燥 : 第1報 熱線型赤外線によるスフトウの乾燥
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概要
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The drying methods adopted hithertofore have used the hot air which imparts heat on to the surface of the samples by conduction and convection. These methods may be briefly called "the extra-heating methods". In the case of drying by infrared rays, however, heat is transmitted by radiation not only on to the surface of the samples but also directly into the inner part. In comparison with the conventional methods, it may be called "the intra-heating methods". The infrared rays drying, as expected easily from the drying mechanism, gives much more uniform drying compared with hot air drying and also shorten the drying time due to the higher speed to drying. At the same time a good influences on the physical properties of fibers can be expected owing to the shorter time of the contact with hot air and the heat treatment of the fibers. From the experiments made with the rayon tow (moisture content of about 180%) of which the total deniers is 290 000 and monofilament denier 1・5, the following excellent results were obtained different from usual methods. As to the rate of drying, the infrared rays drying method shows 10-15 times higher value than usual methods, so it become easily possible to shorten drying time to about 1/50. Regarding the physical properties of treated fibers, the infrared rays drying shows the higher values about both the ratio of dry and wet strengths (St._W/St._D), and dry and knot strength (St._K/St._D). From this fact it can be presumed that the crystallinity of cellulose can be increased by the heat effect of fibers.
- 社団法人日本材料学会の論文
- 1957-01-15
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