| abstract |
(57) [Summary] [Purpose] A polyethylene composition having excellent film-forming properties, heat-sealing strength when formed into a film, hot tack property, and low-temperature heat-sealing property, and a composite film obtained by extrusion coating the same on a substrate. provide. [Structure] (A) Ethylene and carbon number 4 having MFR of 1 to 50 g / 10 minutes, density of 0.880 to 0.930 g / cm 3 , and Mw / Mn of 1.5 to 4.0 Α of 10 99 to 30% by weight of a random copolymer with an olefin, (B) MFR is 1 to 70 g / 10 minutes and the density is 0.9. 15 to 0.935 g / cm 3 of high pressure low density polyethylene 1 to 70% by weight, (1) MFR of 1 to 30 g / 10 minutes, and (2) the density is 0.881 to 0.930 g / a cm 3, (3) a composite film for a polyethylene composition melt tension is 0.5 to 10 g. A composite film obtained by extrusion coating the above composition on a substrate. |