| 摘要 |
A heat-shrinkable shape memory product is produced by injection moulding a melt-mixed crosslinkable polymer composition, preferably comprising polyethylene and ethylene-vinyl acetate (EVA) copolymer. The composition also contains a micro encapsulated foaming agent and acrosslinking agent, and the temperature and pressure conditions are setlected so that foaming and expansion of the composition takes place not in the injection moulding machine but in the mould itself. |
