CPC D21H 19/28 (2013.01) [C09D 167/02 (2013.01)] | 16 Claims |
1. A paper or paperboard comprising:
at least one coating layer formed by extrusion coating of a PET (polyethylene terephthalate) resin,
wherein the PET resin comprises at least 50% by weight of a PET copolymer having an intrinsic viscosity in a range of from 0.57 to 0.61 dl/g, as determined according to ISO 1628,
wherein said PET copolymer is a PET copolymer comprising repeating units of terephthalic acid, isophthalic acid, monoethylene glycol, and diethylene glycol,
wherein a molar ratio of terephthalic acid:isophthalic acid in said PET copolymer is in a range of from 99:1 to 50:50,
wherein a molar ratio of monoethylene glycol:diethylene glycol in said PET copolymer is in a range of from 99:1 to 50:50.
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