CONSTRUCTIONAL HEAT-INSULATING FOAM BOARD AND PROCESS FOR PRODUCTION THEREOF

摘要

The invention provides a constructional heat-insulating foam board of a polyolefin resin composition which exhibits excellent extrusion foamability and excellent heat insulation performance and which is recyclable and can be produced at a low cost continuously and stably. A constructional heat-insulating foam board, characterized by being produced by expanding a polyolefin resin composition containing a linear polypropylene resin exhibiting a melt tension of 5 to 30g at 230ºC with a blowing agent containing supercritical carbon dioxide as the essential component at an expansion ratio of 10 or above.