PRODUCTION OF HEAT-INSULATING CUSHIONING MATERIAL BY USING DEFIBRATED WASTE PAPER PULP AS RAW MATERIAL

摘要

PURPOSE: To surely suppress the drop of heat-insulation effect caused by the convection of air. CONSTITUTION: A powdery adhesive A composed of a foamable synthetic resin is uniformly mixed to a defibrated waste paper pulp M1, the obtained mixture M3 is filled in a mold of a molding machine 3 and pressed with a pressing mechanism and the adhesive in the mixture M3 is foamed with heat conducted from a heating apparatus 4. High-pressure steam may be applied to the mixture M3 before filling in the mold. The foamable powdery adhesive A is preferably a powdery phenolic synthetic resin.