| 摘要 |
The trilayered synthetic resin film is composed of a middle layer, which contains 50-94% thermoplastic isotactic polyprophylene resin, 5-40% resin non-compatible with polypropylene and 1-10% inorganic powder, and an upper and a lower layer of the middle layer formed from coextrusion of polyolefin resin. The resin non-compatible with polypropylene is selected from nylon, polyethyleneterephthalate, polycarbonate, polybutyleneterephthalate or polystyrene, and the inorganic powder is selected from titania(TiO2), talc or calcium carbonate(CaCO3).
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