| 摘要 |
<p>PURPOSE:To efficiently produce a moisture absorptive sheet by allowing the mixedly-made paper consisting of inorganic fiber and pulp to be impregnated with water-glass and semi-drying it and immersing it in an aq. soln. of aluminum salt, magnesium salt or calcium salt to produce silicate hydrogel and washing this with water and thereafter drying this. CONSTITUTION:Papers 14, 15 obtained by mixedly paper-making ceramic fiber, pulp, glass fiber and a binder are impregnated with a water-glass aq. soln. 2 and semi-dried at 5-45% water content with a dryer 3 and paper 14 is molded into corrugated paper 14a by molding gears 4. This corrugated paper 14a and plane paper 15 are immersed in an aq. soln. 6 of aluminum salt (magnesium salt or calcium salt may be used) and aluminum silicate and hydrogel are produced and excess salt is washed with water 8 and spraying water from a nozzle 7c and removed. These are heated and dried with a dryer 9 and the top part of the corrugated paper 14a is applied with an adhesive 12 and both the corrugated paper 14a and plane paper 15 are superposed and wound on a core material 16 to produce a moisture absorptive material.</p> |
