Transparent Biaxially Oriented Polyolefin Film
Patent #: 7,041,381
Inventor(s): Wolfgang Rasp and Detlef Hütt
Company: Hoechst Trespaphan GmbH
Transparent, single- or multilayered, oriented polypropylene film has been issued a patent. The film comprises at least one layer with a layered dry-ground silicate without a coating of metal oxides, which has an irregular surface structure. The amount of layered silicate is between 0.01% to 4% by weight, based on the total weight of the film. The film is at least 85% by weight polypropylene. The film is laser markable.
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