| 摘要 |
A film formed from a polyethylene composition is disclosed, the polyethylene having a having a density of 948-956 kg/m3, a high load melt index HLMI of 7-15, a melt storage modulus G' at a dynamic frequency where the loss modulus G" = 3000Pa, G'(G" = 3000) of 1400-1800 Pa, and a value of Mz/ G'(G" = 3000) of at least 900 Da/Pa, where Mz is z-average molecular weight. Also disclosed is a film formed from a polyethylene composition having a density of 948-956 kg/m3, an HLMI of 7-15 and a melt storage modulus G' at a dynamic frequency where the loss modulus G" = 3000Pa, G'(G" = 3000) of 1400-1800 Pa, said film having a relationship between transverse direction tear strength of a 15mum film (TTD, expressed in g/25mum) and dart drop impact resistance of a 15mum film (I, expressed in g) represented by TTD > 62000/l. |
