| 摘要 |
<p>The present invention concerns a composition for preparing breathable films. The composition comprises a bimodal polyethylene composition, a particulate filler, and optionally, an olefin-based polymer. The bimodal polyethylene composition has a melt flow rate MFR2 of 0.1 to 4 g/10 min and a density of 918 to 935 kg/m<3>. The olefin-based polymer can be, e.g., polypropylene. The films prepared from the composition have a very high water vapour transmission rate, exceeding 3000 g/m<2>/24 h. The composition can be prepared to thin films having a low basis weight, of 25 g/m<2> or less. The films have no pinholes.</p> |
