| http://www.w3.org/ns/prov#value | - The intermediate layer may include at least one ionomer, such as acid-containing ethylene copolymer ionomers, including E/X/Y terpolymers where E is ethylene, X is an acrylate or methacrylate-based softening comonomer in 0???50 wt. %, and Y is acrylic or methacrylic acid in 5???35 wt. % (such as 8???35 wt. % or 8???20 wt. %).
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