| 摘要 |
Multi-layer, perforated polyolefin films comprising at least one polyolefin layer having a high visible light absorbance and at least one polyolefin film having a high opacity, a support layer interposed between the first and second layers, a plurality of perforations penetrating from the first and second layers, a shore D hardness of at least (35) and wherein at least one of the first two layer has a surface tension of at least (34) dyne/cm are provided. Methods for preparation and use of the poly olefin films are also provided. |
