Black film comprised of thermoplastic polyester
AssigneeMitsubishi Polyester Film GmbH
InventorsHolger Kliesch, Thorsten Kiehne, Franz Hora, Ingo Fischer
Life of this patent
Estimating the term…
Abstract
This invention relates to a single- or multilayer, oriented film formed from polyester and at least one inorganic black pigment. The inventive films include at least one layer which has, alongside polyester, an amount of from 0.5 to 75% by weight of particles incorporating iron oxide as black pigment.
Claims15
A single- or multilayer, extruded or co-extruded oriented black film comprising polyester and at least one inorganic black pigment, said film including at least one layer which comprises, alongside polyester, an amount of from 0.5 to 75% by weight of black pigment, said black pigment consisting of inorganic particles selected from mica, silicon dioxide or calcium carbonate that have been coated with Fe3O4, said film further exhibiting a transparency in visible light of less than 12%.
An extruded or co-extruded black film comprising one or more layers, said layer(s) comprising polyester and at least one inorganic black pigment, said black pigment comprising inorganic particles that have been coated with Fe3O4 said Fe3O4 present in said film in a total amount ranging from 0.5 to 7% by weight, said extruded or coextruded film further exhibiting a transparency in visible light of less than 0.5%, wherein said transparency is solely attributed to the layer(s) containing the inorganic particles that have been coated with Fe3O4.
Dependencies are inferred from the claim text.