Label film
AssigneeTreofan Germany GmbH & Co. KG
InventorsJoachim Jung, Yvonne Duepre
Life of this patent
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Abstract
The invention relates to a multilayered, opaque, biaxially oriented polyolefin film having a thickness of at least 30 μm consisting of a vacuole-containing base layer and intermediate layers applied to both sides thereof, and cover layers applied to either side of the intermediate layers. Both intermediate layers have a thickness of at least 3 μm and contain at least 70% by weight of a propylene homopolymer. Both cover layers are constructed from incompatible polymers. The inner cover layer has a surface roughness Rz of at least 3.0 μm and the outer cover layer has a roughness from 1 to 3 μm, the roughness of the inner cover layer being at least 1.5 units greater than the roughness of the outer cover layer.
Claims18
1-13. (canceled)
A multilayered, opaque, biaxially oriented polyolefin film having a thickness of at least 30 μm consisting essentially of a vacuole-containing base layer and intermediate layers applied to both sides thereof, and cover layers applied to either side of the intermediate layers, wherein both intermediate layers have a thickness of at least 3 μM and contain at least 70% by weight of a propylene homopolymer, and both cover layers are constructed from a mixture of incompatible polymers, and the inner cover layer has a surface roughness Rz of at least 3.0 μm (cut off 0.25 mm) and the outer cover layer has a roughness from 1 to 3 μm (cut off 0.25 mm), wherein the roughness of the inner cover layer is at least 1.5 μm greater than the roughness of the outer cover layer.
Dependencies are inferred from the claim text.