Eva blend compositions suitable for rf welding applications

A multilayer film having a thickness of at least about 0.001 mil to about 25 mil that absorbs radio frequency energy comprising

• A. a first layer consisting essentially of
• 1. a first component comprising a mixture of
• a. at least one polymer selected from the group consisting of E/X/Y copolymers, ionomers of E/X/Y copolymers and mixtures thereof, where E is ethylene, X is a C3 to C8 α,β-ethylenically unsaturated carboxylic acid and Y is a comonomer selected from the group consisting of alkyl acrylates and alkyl methacrylates having alkyl groups of from one to eight carbon atoms, wherein said E/X/Y copolymers comprise about 2-30 weight %, based on the weight of the E/X/Y copolymer, of copolymerized units of X and about 0-40 weight %, based on the weight of the E/X/Y copolymer, of copolymerized units of Y, and
• b. a material selected from the group consisting of organic carboxylic acids having from about 6 to about 38 carbon atoms, salts of said organic carboxylic acids and mixtures thereof;
• wherein the combined carboxylic acid groups present in said polymer and said material of said first component are neutralized to a level of at least 70% by potassium ions;
• and
• 2, a second component in an amount of from about 50 to about 95 wt. %, based on the total weight of said first and second components, wherein said second component is different from said at least one polymer of said first component and is selected from the group consisting of ethylene vinyl acetate copolymers, ethylene copolymers having copolymerized epoxy-functionalized monomer units, ethylene carbon monoxide copolymers, ethylene vinyl alcohol copolymers and mixtures thereof;
• and
• B. at least one additional film layer.