A fluoroplastic-based product having reduced friction and improved abrasion resistance having excellent abrasion resistance as well as good characteristics being inherent to fluoroplastics comprises a fluoroplastic molded material containing a modified fluoroplastic prepared by applying ionizing radiation to a fluoroplastic (I) heated at the melting point or a higher temperature under an inert gas atmosphere having 10 torr or less oxygen concentration within a range of irradiation doses of from 1 KGy to 10 MGy; and an unmodified fluoroplastic (II).