TECHNOLOGY FOCUS - POLYMERS - Preferred Structure: The multilayer film structure comprises a top encapsulation layer A comprising a silane-graft-containing ethylene alpha olefin copolymer, a bottom layer C comprising a propylene-based polymer and a tie layer B between layer A and layer C comprising a crystalline block copolymer composite (CBC) comprising i) an ethylene polymer (EP) comprising polymerized ethylene (at least 93 mol.%); ii) a crystalline propylene polymer and iii)a block copolymer comprising (a) an ethylene polymer block comprising polymerized ethylene (at least 93 mol.%) and (b) a crystalline propylene polymer block. The multilayer film structure have a thickness of 0.2-1.5 mm, where layer A is 0.15-1.25 mm in thickness; layer B is 10-150 mu m in thickness; and layer C is 150-375 mu m in thickness. Preferred Components: The i) EP in tie layer B comprises polymerized ethylene (at least 80 mol.%) and the balance is polymerized propylene. The block composite resin in tie layer B is a crystalline block composite resin. The tie layer B block composite resin has a CAOB (30-70, preferably 440-60 wt.%). The tie layer B comprises a CBC having a CBCI of 0.3-1 or a specified BC having a BCI of 0.1-1. The propylene is the alpha-olefin in ii) and iii) in tie layer B. The tie layer B comprises a blend comprising CBC or specified BC ( greater than or equal to 40 wt.%). The tie layer B is a blend further comprises at least one polyolefin selected from ethylene octene copolymer plastomers or elastomer, linear low-density polyethylene (LLDPE) and low-density polyethene (LDPE). The CBC or specified BC of layer B has a melt flow rate of 3-15 g/10 minutes (at 230 degrees C/2.16 kg). The top encapsulation layer A comprises an ethylene octene copolymer plastomers or elastomer. The top encapsulation layer A comprises a silane-graft containing ethylene octene copolymer. The bottom layer C comprises a propylene-based polymer. The bottom layer C comprises a propylene-based polymer having a heat of fusion value of at least 60 Joules per g (J/g). EXAMPLE - No suitable example given.