| 摘要 |
<p>PURPOSE:To remove a binder of glass cloth, improve adhesive properties to a resin varnish and obtain a laminated board, by heating the glass cloth in an electric furnace to partially remove the binder and subjecting the resultant glass cloth to plasma treatment. CONSTITUTION:Sheets of glass cloth are impregnated with a resin varnish and dried to form plural sheets of prepreg, which are then laminated to produce a laminated board. In the process, the sheets of glass cloth are heated in an electric furnace at, e.g. 300-450 deg.C for 12-36hr, before impregnating with the resin varnish to partially remove a binder. The resultant sheets of glass cloth are then subjected to plasma treatment to remove the residual binder.</p> |
