1958 Volume 12 Issue 9 Pages 607-612
The following results were obtained in consequence of the fundamental experiments on the manufacture of Nylon paper by using the traditional method of nagashi-zuki in order to make Japanese paper.
1. Neri (obtained from the root of tororo-aoi) were preferred as the dispersing agent. N-methoxymethylated 6 nylon (type 8 nylon) emulsion were used as the bonding agent of nylon sheets.
2. We employed nylon staple fiber of 15den. cut in various length (e.g.1, 3, 4, 5, 7 and 10mm) in making sheet of paper at 100kg/cm2 heat press using type 8 nylon as a bonding agent.Tensile strength gives maximum value at the fiber length of 4-5 mm, but decreases with increasing fiber length.
3. “ Kamiko ” (Japanese paper clothes) in the Muromachi period and the Yedo period (1339-1867) is regarded as non-woven fabric using kazo of natural cellulosic fiber and neri as a dispersing agent, coating with konnyaku (a paste made from the starch of devil's tongue) and shibu the astringent juice of unripe persimmons as a bonding agent.These paper products were of two sorts : one was plain in color for the winter coats of popular use ; the other being made elegant looking by dyeing fancy figures upon like calico for the use of daimyos and the well.to-do. The distribution of kazo fiber length is the normal frequency distribution at the height of 10 mm. Tensile strength gives maximum value, blended with 20-30 mm cut to 7080%10mm cut fiber length.
4. The weight of type 8 nylon remained in the sheet was measured, but were preferred 10-20%. The surface temperature of heated roller press was suitable 180-185°C at 50kg/ 30cm.