Recyclable multilayer films having a heco/ldpe-based core layer

A polypropylene-based multilayer film (F), comprising, in the given order, the following layers:

• (A) a skin layer, comprising at least 90 wt. %, based on the total weight of the skin layer, of a polypropylene or mixture of polypropylenes;
• (B) a core layer, comprising least 90 wt. %, based on the total weight of the core layer, of a first polypropylene composition (PC1) comprising the following components:
• a) from 85.0 to 99.0 wt. %, relative to the total weight of the first polypropylene composition (PC1), of a first heterophasic propylene-ethylene copolymer (HECO1) comprising the following components:
• a1) a crystalline matrix (M1) being either a propylene homopolymer or a propylene-ethylene random copolymer;
• and
• b1) an amorphous propylene-ethylene elastomer (E1),
• wherein the first heterophasic propylene-ethylene copolymer (HECO1) has the following properties:
• i) a melt flow rate (MFR2), determined according to ISO 1133 at 230° C. and 2.16 kg, in the range from 0.1 to 20.0 g/10 min;
• ii) a soluble fraction (SF) content in the range from 10 to 45 wt. % and a crystalline fraction (CF) content in the range from 55 to 90 wt. %, both determined according to CRYSTEX QC analysis;
• iii) an ethylene content (C2 (total)), determined by CRYSTEX QC analysis, in the range from 3.0 to 15.0 wt. %;
• and
• iv) a melting temperature (Tm), determined by differential scanning calorimetry (DSC) according to ISO 11357/part 3/method C2, in the range from 130 to 155° C.;
• and
• b) from 1.0 to 15.0 wt. %, relative to the total weight of the first polypropylene composition (PC1), of a low density polyethylene (LDPE),
• wherein the combined amounts of the first heterophasic propylene-ethylene copolymer (HECO1) and the low density polyethylene (LDPE) are at least 95 wt. %, relative to the total weight of the first polypropylene composition (PC1);
• and
• (C) a sealing layer, comprising at least 90 wt. %, based on the total weight of the sealing layer, of a polypropylene or mixture of polypropylenes.