| 摘要 |
Biaxially oriented polyolefin film having a thickness of at least 50 mu m including a layer of a polypropylene based polymer resin having rnicrovoids therein, the microvoids having been formed by stretching a web containing the beta-form of polypropylene at an area stretch ratio of at least 15:1. These films have shown good performance characteristics during film conversion, for example, printing. |
