| 摘要 |
PURPOSE:To plaster mortar without stretching a lath net and prevent the exfoliation of the mortar by the expansion and the contraction, the defection, or the like of a board caused by temperature or humidity by stacking simple plates, which have stripe-shaped irregularity at the surfaces and the rears, on a board. CONSTITUTION:A simple board 1, where stripe-shaped projections and recesses are provided alternately at the obverse and the reverse, is manufactured. Next, a proper number of these simple boards 1 are stacked and bonded so that the projections and the recesses may not engage with each other so as to constitute a board-shaped base material 2 for mortar ground. Hereby, the base material 2 for mortar ground can be manufactured easily and cheaply, and the exfoliation of the plastered mortar can be prevented without causing the deflection by the change of temperature, humidity, etc. |
