| 摘要 |
A film formed from a polyethylene composition is disclosed, the polyethylene 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″=3000 Pa, 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″—3000 Pa, G′(G″=3000) of 1400-1800 Pa, said film having a relationship between transverse direction tear strength of a 15 μm film (TTD, expressed in g/25 μm) and dart drop impact resistance of a 15 μm film (I, expressed in g) represented by TTD>62000/1. |
