LOW-MELTING POINT GRANULES PREPARED FROM FOAMED NON-LINKED POLYPROPYLENE, METHOD AND APPARATUS FOR MANUFACTURE THEREOF Russian patent published in 2005 - IPC

Abstract RU 2264418 C2

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

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Authors

Li Khee-Sung

Li Chul

Li Rieong

Kim Dzea-Miung

Dates

2005-11-20Published

2002-05-15Filed