| 摘要 |
Two surfaces each provided with a coating, one coating comprising an aqueous glue which dries by evaporation of water, the other coating being at least substantially dry, are stuck together and dried, according to Dt 1594113. wherein in the other coating is applied in powder form to the corresponding moist surface. More specifically the other coating is applied to a wood fibre sheet, where the powder is applied to the sheet before drying if its residual moisture is not sufficient to dissolve the powder. Powder pref. applied by spraying or electrostatically. |
