Tie-layer materials for use with ionomer-based films and sheets as skins on other materials

A laminate comprising:

• an ionomer layer, wherein the ionomer layer comprises a first ionomer layer and a second ionomer layer and wherein one or both of the first ionomer layer and the second ionomer layer is pigmented, natural color, or clear, wherein the first ionomer layer comprises a blend of:
• (a) 45 to 95 wt % of a first ionomer having a melt index (MI190/2.16) of from 0.6 to 1.0 dg/min;
• and (b) a second ionomer having a melt index (MI190/2.16) of from 2.1 to 3.0 dg/min and the first ionomer has a different metallation than the second ionomer;
• a tie layer comprising at least one coextrudable tie resin selected from an epoxy containing copolymer and a copolymer of one or more C2-C10 α-olefin and one or more ethylenically copolymerizable amine-containing monomer of the general formula:
• wherein each R is independently H or a C1 to C10 hydrocarbon and R′ is a bond or a C1 to C10 hydrocarbon, and wherein the coextrudable tie resin has a melt index (MI190/2.16) of about 2.0 to about 10 dg/min;
• and
• a backing layer comprising a blend of said at least one coextrudable tie resin and at least one of a polyamide polymer, a polyamide compound, a polyamide elastomer, an acrylic polymer, an elastomer, a styrenic polymer, a copolymer containing cyclic monomer(s), a polyurethane polymer, or mixtures thereof;
• wherein the tie-layer is disposed between the ionomer layer and the backing layer.