Insulating film laminates - of glass-fibre fleece layers impregnated with modified epoxy resin

摘要

The laminates are based onlayers of a) glass-fibre fleece impregnated with talc, CaCO3, quartz powder or "Aerosil" as filler and a halogenated epoxy resin prepreg of bisphenol A or B modified with formaldehyde precondensates or polyester resin and contg. accelerators or curing agents. They are gold stampable, non-flammable with good heat-resistance and are used as a base for printed circuits and as insulation tape.