Photovoltaic module encapsulant, intended to encase a photovoltaic cell, comprising two adjacent thermoplastic layers forming a core-skin assembly, characterized in that: • the core layer consists of a polyamide graft polymer comprising a polyolefin backbone, representing from 50% to 95% by weight of the polyamide graft polymer, containing a residue of at least one unsaturated monomer and at least one polyamide graft, representing from 5% to 50% by weight of said polyamide graft polymer, wherein: - the polyamide graft is attached to the polyolefin backbone by the residue of the unsaturated monomer comprising a function capable of reacting via a condensation reaction with a polyamide having at least one amine end group and/or at least one carboxylic acid end group, - the residue of the unsaturated monomer is attached to the backbone by grafting or copolymerization, - the polyolefin backbone of the core layer, has a melting temperature of greater than or equal to 95°C; • the skin layer consists of a polyamide graft polymer comprising a polyolefin backbone, representing from 50% to 95% by weight of the polyamide graft polymer, containing a residue of at least one unsaturated monomer and at least one polyamide graft, representing from 5% to 50% by weight of said polyamide graft polymer, wherein: - the polyamide graft is attached to the polyolefin backbone by the residue of the unsaturated monomer comprising a function capable of reacting via a condensation reaction with a polyamide having at least one amine end group and/or at least one carboxylic acid end group, - the residue of the unsaturated monomer is attached to the backbone by grafting or copolymerization, - the polyolefin backbone and the polyamide graft being chosen so that said polyamide graft polymer has a flow temperature of greater than or equal to 75°C and less than or equal to 160°C, this flow temperature being defined as the highest temperature among the melting temperatures and glass transition temperatures of the polyamide graft and of the polyolefin backbone, - the polyolefin backbone does not have a melting temperature or has a melting temperature below 95°C. • the core layer consists of a polyamide graft polymer comprising a polyolefin backbone, representing from 50% to 95% by weight of the polyamide graft polymer, containing a residue of at least one unsaturated monomer and at least one polyamide graft, representing from 5% to 50% by weight of said polyamide graft polymer, wherein: - the polyamide graft is attached to the polyolefin backbone by the residue of the unsaturated monomer comprising a function capable of reacting via a condensation reaction with a polyamide having at least one amine end group and/or at least one carboxylic acid end group, - the residue of the unsaturated monomer is attached to the backbone by grafting or copolymerization, - the polyolefin backbone of the core layer, has a melting temperature of greater than or equal to 95°C; - the polyamide graft is attached to the polyolefin backbone by the residue of the unsaturated monomer comprising a function capable of reacting via a condensation reaction with a polyamide having at least one amine end group and/or at least one carboxylic acid end group, - the residue of the unsaturated monomer is attached to the backbone by grafting or copolymerization, - the polyolefin backbone of the core layer, has a melting temperature of greater than or equal to 95°C; • the skin layer consists of a polyamide graft polymer comprising a polyolefin backbone, representing from 50% to 95% by weight of the polyamide graft polymer, containing a residue of at least one unsaturated monomer and at least one polyamide graft, representing from 5% to 50% by weight of said polyamide graft polymer, wherein: - the polyamide graft is attached to the polyolefin backbone by the residue of the unsaturated monomer comprising a function capable of reacting via a condensation reaction with a polyamide having at least one amine end group and/or at least one carboxylic acid end group, - the residue of the unsaturated monomer is attached to the backbone by grafting or copolymerization, - the polyolefin backbone and the polyamide graft being chosen so that said polyamide graft polymer has a flow temperature of greater than or equal to 75°C and less than or equal to 160°C, this flow temperature being defined as the highest temperature among the melting temperatures and glass transition temperatures of the polyamide graft and of the polyolefin backbone, - the polyolefin backbone does not have a melting temperature or has a melting temperature below 95°C. - the polyamide graft is attached to the polyolefin backbone by the residue of the unsaturated monomer comprising a function capable of reacting via a condensation reaction with a polyamide having at least one amine end group and/or at least one carboxylic acid end group, - the residue of the unsaturated monomer is attached to the backbone by grafting or copolymerization, - the polyolefin backbone and the polyamide graft being chosen so that said polyamide graft polymer has a flow temperature of greater than or equal to 75°C and less than or equal to 160°C, this flow temperature being defined as the highest temperature among the melting temperatures and glass transition temperatures of the polyamide graft and of the polyolefin backbone, - the polyolefin backbone does not have a melting temperature or has a melting temperature below 95°C.