A multilayer interlayer comprising: an integrated multilayer sheet having a length, a width and a total thickness, comprising: (a) a first skin layer A which is a layer of a first thermoplastic resin optionally containing one or more additives, the first skin layer having an exterior side, an interior side and a first thickness, (b) a second skin layer C which is a layer of a second thermoplastic resin optionally containing one or more additives, the second skin layer having an exterior side, an interior side and a second thickness, and (c) an interior layer B which is a layer of a third thermoplastic resin optionally containing one or more additives, the interior layer B being disposed between the interior side of first skin layer A and the interior side of second skin layer C and having a third thickness, wherein the multilayer interlayer is wedge-shaped having a thicker first edge and a thinner second edge, wherein each of the third thickness and the total thickness is individually consistent throughout the length and width of the integrated multilayer sheet within a variance of thickness of no more than 7%; the multilayer interlayer further comprises a wedge-shaped film of a fourth thermoplastic resin optionally containing one or more additives, the wedge-shaped film having an exterior side and an interior side, wherein the interior side of the wedge-shaped film is adhered directly or indirectly to the exterior side of first skin layer A, the thicker first edge has a thickness of 1850 μm or less and the thinner second edge has a thickness of 600 μm or more, characterised in that: the integrated multilayer sheet forms the predominant portion of the thickness at both the thicker first edge and the thinner second edge. an integrated multilayer sheet having a length, a width and a total thickness, comprising: (a) a first skin layer A which is a layer of a first thermoplastic resin optionally containing one or more additives, the first skin layer having an exterior side, an interior side and a first thickness, (b) a second skin layer C which is a layer of a second thermoplastic resin optionally containing one or more additives, the second skin layer having an exterior side, an interior side and a second thickness, and (c) an interior layer B which is a layer of a third thermoplastic resin optionally containing one or more additives, the interior layer B being disposed between the interior side of first skin layer A and the interior side of second skin layer C and having a third thickness, (a) a first skin layer A which is a layer of a first thermoplastic resin optionally containing one or more additives, the first skin layer having an exterior side, an interior side and a first thickness, (b) a second skin layer C which is a layer of a second thermoplastic resin optionally containing one or more additives, the second skin layer having an exterior side, an interior side and a second thickness, and (c) an interior layer B which is a layer of a third thermoplastic resin optionally containing one or more additives, the interior layer B being disposed between the interior side of first skin layer A and the interior side of second skin layer C and having a third thickness, wherein the multilayer interlayer is wedge-shaped having a thicker first edge and a thinner second edge, wherein each of the third thickness and the total thickness is individually consistent throughout the length and width of the integrated multilayer sheet within a variance of thickness of no more than 7%; the multilayer interlayer further comprises a wedge-shaped film of a fourth thermoplastic resin optionally containing one or more additives, the wedge-shaped film having an exterior side and an interior side, wherein the interior side of the wedge-shaped film is adhered directly or indirectly to the exterior side of first skin layer A, the thicker first edge has a thickness of 1850 μm or less and the thinner second edge has a thickness of 600 μm or more, characterised in that: the integrated multilayer sheet forms the predominant portion of the thickness at both the thicker first edge and the thinner second edge.