| 摘要 |
Disclosed herein are various compositions, including a high density polyethylene composition, comprising: (a) a bimodal polyethylene component that includes a high molecular weight polyethylene component having a high average molecular weight (MW<SUB>HMW</SUB>) and a low molecular weight polyethylene component having a low average molecular weight (MW<SUB>LMW</SUB>), wherein the ratio of the high average molecular weight to the low average molecular weight (MW<SUB>HMW</SUB>:MW<SUB>LMW</SUB>) is 20 or more; and (b) a unimodal polyethylene component that occupies more than 15 wt % of the composition; wherein: (c) the composition has a density of 0.935 g/cc or more, and a Maximum Line Speed of 170 feet per minute or more.
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