METHOD AND APPARATUS FOR PRODUCING HEAT INSULATING BULDING PANEL

摘要

PURPOSE:To efficiently produce a building panel of good quality having a foamable heat insulating layer formed therein and to freely change the thickness of the foamable heat insulating layer. CONSTITUTION:A panel substrate K formed by attaching a surface material E1 to one surface of a framework F is fed so that the recessed parts J thereof are turned upwardly. A process preheating the recessed parts J during feed, a coating process applying a heat insulating foamable resin to the interiors of the preheated recessed parts J in a non-foamed state and a curing process foaming the coated foamable resin to form a foamed heat insulating layer I are provided.