Laser engravable labels

A coextruded acrylic foil comprising a layer A and a layer B, wherein

• the layer A comprises:
• from 30.0 wt. % to 98.5 wt. % of an acrylic polymer A;
• from 1.0 wt. % to 40.0 wt. % of an impact modifier;
• from 0.5 wt. % to 20.0 wt. % of a colourant;
• from 0.0 wt. % to 10.0 wt. % of an inorganic filler;
• from 0.0 wt. % to 5.0 wt. % of a UV absorber;
• and from 0.0 wt. % to 5.0 wt. % of a UV stabilizer, based on the weight of the layer A;
• wherein a cumulative content of the acrylic polymer A and the impact modifier in the layer A is from 60.0 wt. % to 99.5 wt. %, based on the weight of the layer A;
• and
• the layer B comprises:
• from 30.0 wt. % to 92.5 wt. % of an acrylic polymer B;
• from 2.5 wt. % to 35.0 wt. % of an impact modifier;
• from 5.0 wt. % to 35.0 wt. % of an inorganic filler;
• from 0.0 wt-% to 5.0 wt. % of a UV absorber;
• and
• from 0.0 wt. % to 5.0 wt. % of a UV stabilizer, based on the weight of the layer B;
• wherein cumulative content of the acrylic polymer B and the impact modifier in the layer B is from 60.0 wt. % to 95.0 wt., based on the weight of the layer B;
• wherein the content, in wt. %, of the impact modifier nimA in the layer A is described by the following relationship:
• (
• n
• fA
• +
• n
• p
• ⁢
• A
• )
• ≤
• n
• imA
• ≤
• 7
• *
• (
• n
• fA
• +
• n
• p
• ⁢
• A
• )
• nfA being the content, in wt. %, of the inorganic filler and
• hpA being the content, in wt. %, of the colourant in the layer A;
• and
• the content, in wt. %, of the impact modifier nimB in the layer B being satisfied by the following relationship:
• 0.25*nfB<nimB<2*nfB
• nfB being the content, in wt. %, of the inorganic filler in the layer B.