PRESCORED FOAM FOR PANEL FABRICATION

摘要

A planar composite panel is constructed from two resin-impregnated fiber face sheet covering (38) and bonded to the two sides of a honeycomb core element (32) and a surrounding border element made of rigid foam board (34). The two planar faces of the rigid foam board are embossed with a pattern of indentations in the form on interlinked equilateral triangles which are sufficiently deep and close together to provide escape paths for volatiles generated inside the panel during curing of the resin in the face sheets by which the face sheets are bonded to the honeycomb core element and the foam board, to prevent the development of excessive pressure between the face sheets that otherwise would interfere with the bonding.