| 摘要 |
FIELD: optionally materials. ^ SUBSTANCE: granules with melting point 125-140°C are obtained by extruding non-linked random copolymer of propylene with nucleating agent through tandem-extruder, in which each of extruders is divided into sic temperature zones with specified temperatures. Thus manufactured granules show low melting point, satisfactory mechanical strength, and contain at least 80% of closed cells. ^ EFFECT: improved moldability into a variety of packaging items. ^ 18 cl, 19 dwg, 10 tbl, 30 ex |
