Patent ID: 8852747

Claim:
A multilayer structure comprising a binder layer (L) of a composition comprising (the total making 100 %): 1 to 99 % by weight of a polymer (A) or of a blend of polymers (A), said polymer or polymers (A) being: biorenewable and/or biodegradable; and grafted by a functional grafting monomer comprising at least one reactive function, the grafting ratio being in the range of 0.1 to 0.98 % by weight of grafted polymer(s) (A); 99 to 1 % by weight of a polymer (B) or of a blend of polymers (B), said polymer or polymers (B) being: ungrafted; biorenewable and/or biodegradable; and identical to said polymer(s) (A) or compatible with said polymer(s) (A); 0 to 50 % by weight of a component (C) a softener; and 0 to 50 % by weight of a material (D) comprising starch, wherein the layer (L) is directly linked to a layer (X) and also directly linked to a layer (Y), said multilayer structure having a layer (X)/layer (L)/layer (Y) type structure, wherein layer (X) is a polymer, wherein the layer (L) adhered to layer (X) has a peel strength greater than or equal to 0.5N/15mm in the 90 ° peel test according to the ISO 8510-1 standard when two layers each having a thickness of 200 μm are brought into contact in the molten state by coextrusion of a two-layer film, these 2 layers having, 24 h after cooling at 20° C., wherein the polymer (A) is selected from the group consisting of polyhydroxyalkanoate homopolymers or copolymers (PHA), polyalkylene succinates (PAS), polybutylene succinate adipate (PBSA), polybutylene adipate terephthalate (PBAT), polycaprolactone (PCL), polytrimethylene terephthalate (PTT) and thermoplastic starch (TPS).