a process for fabricating panels of a core material with thermoplastic resin facings . the core material is either foam or a honeycomb structure from aramid paper . a belt press machine provides a means for rapid heating and cooling such that the core will not degrade . since the process is so rapid , aramid fibers can be used to reinforce the resin facings without deleterious decomposition of the fibers under the temperatures used to heat the panels during forming .