LAMINATING METHOD

摘要

LAMINATING METHOD Method of laminating pluralities of sheets as unitary panels with heat and pressure curable adhesive in which unlaminated, uncured sheet pluralities are alternately stacked in a press lay-up with partially semicured unitary sheet pluralities and the entire layup is subjected to heat and pressure for a time sufficient to partially cure the originally uncured sheet pluralities and bring the interspersed, partially cured sheet pluralities to full cure. Thereafter, the newly partially cured and fully cured units are removed and the partially cured units used alternately with new uncured sheet pluralities. This method obviates the need for planishing plates heretofore used to produce smooth surfaces on metal foil covered core units for printed circuit manufacture.