Transparent, biaxially oriented polyester film
OwnerHerbert Peiffer, Martin Mueller-Roosen +1inventors
InventorsHerbert Peiffer, Martin Mueller-Roosen, Gottfried Hilkert
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Abstract
The invention relates to a transparent, biaxially oriented polyester film which comprises at least 80% by weight of thermoplastic polyester and also comprises an amount in the range from 0.05 to 0.5% by weight of a specific pigment system. The invention further relates to a process for producing the film. The film can be used as a packaging film, or for metalizing or ceramic coating, and in applications in the industrial sector, as a substrate for stamping foils.
Claims11
A transparent, biaxially oriented polyester film which comprises at least 80% by weight of thermoplastic polyester, wherein the film also comprises an amount in the range from 0.05 to 0.5% by weight, based on the total weight of the film, of a pigment system which has the following features:
- a) the median grain diameter (d50) is in the range from 1.5 to 5 μm and
- b) the spread of the distribution, expressed via the SPAN 98, is less than or equal to 1.9.
Dependencies are inferred from the claim text.