HEAT SHRINKABLE TUBE MATERIAL

摘要

PURPOSE:To provide a improved heat shrinkable tube material, wherein an enhanced extrudability is improved. CONSTITUTION:Due to the addition of 0.2-3wt.% of silicone micromolecular polymer such as dimethyl polysiloxane to tube molding material, remarkable reduction of die tailings and nipple tailings developing at the extrusion molding of tube is contrived, resulting in obtaining heat shrinkable tube having fine external appearance and making stable continuous production of the material concerned possible without exerting a bad influence to crosslinking and expanding process.