TORAYPEF* is a semi-rigid, closed-cell long-sheet foam produced by irradiation cross-linking. It excels in light-weightedness, heat insulation, shock absorption, formability, and non-water- absorbent property, and thus is suitable for a wide range of applications. Its usage includes molded parts for automobile interior, heat insulators for construction use, joint sealant materials, and pipe covers, and extend into other industrial materials, household goods, health-care and recreation-related products as well.