| abstract |
The invention relates to a heat-sealable and non-polar substrates such as PS and PP peelable coextruded, biaxially oriented polyester film, comprising a base layer (B) and a cover layer (A), wherein a) the base layer (B) consists predominantly of a copolyester containing ethylene terephthalate and ethylene isophthalate units, wherein the proportion of ethylene isophthalate units in the copolyester is between 3 and 15 mol%, and b) the cover layer (A) 30 to 95 wt .-% ethylene-polar-ethylene copolymer and Contains from 5 to 70% by weight of polyester, wherein the proportion of polar-ethylene in the copolymer is 2.5 to 15 mol%. n n n As the polyester for the outer layer (A), an ethylene terephthalate-ethylene isophthalate copolyester is preferably used. The film is particularly suitable as a peelable film (lid film) for food containers. |