PROPYLENE-ETHYLENE COPOLYMER RESIN COMPOSITION, AND MOLDED PRODUCT, FILM AND SHEET THEREOF

摘要

The present invention provides a propylene-ethylene copolymer resin composition, a film and a sheet, exhibiting excellent transparency, rigidity and heat sealability, and also excellent extrusion mouldability even with extrusion moulding at low temperatures. The present invention is a propylene-ethylene copolymer resin composition including: 97 to 65 parts by weight of a propylene polymer (A) produced with a metallocene catalyst and having the following properties (A-i) to (A-iii) ; and 3 to 35 parts by weight of a propylene-ethylene copolymer (B) having the following properties (B-i) to (B-ii), wherein the copolymer (B) includes: 65 to 95% by weight of a propylene polymer component (B1) having the following property (B1-i); and 5 to 35% by weight of a propylene-ethylene copolymer component (B2) having the following properties (B2-i) and (B2-ii),
(A-i) the polymer (A) has an ethylene content of 0 to 6.0 wt%;
(A-ii) the polymer (A) has a MFR of 0.1 to 100 g/10 min;
(A-iii) Mw/Mn is 2 to 4;
(B-i) the copolymer (B) has an ethylene content of 0.4 to 13 wt%;
(B-ii) the copolymer (B) has a MFR of 0.5 to 20 g/10 min;
(B1-i) the polymer component (B1) has an ethylene content of 0 to 6.0 wt%;
(B2-i) the copolymer component (B2) has an ethylene content of 8 to 25 wt%; and
(B2-ii) the copolymer component (B2) has a MFR of 0.0001 to 0.5 g/10 min.