US Patent 8017212 Paper honeycomb core composite panel

A paper honeycomb core composite panel includes a face plate, a bottom plate, a paper honeycomb core sandwiched between the face plate and the bottom plate, e pieces of interior spacer disposed between the face plate and the bottom plate and extended entirely or partly around the periphery of the paper honeycomb core, and a edge sealing band which is bonded to the pieces of interior spacer or bonded to the pieces of interior spacer and the paper honeycomb core. The reinforcing frame of the composite panel makes use of the pieces of interior spacer including the pipe pieces or extrusive section material and so on. The edge sealing band or the pieces of interior spacer form the fringe of the composite panel.