Thermal insulation

A multi-ply laminate comprising:

• (1) a five-layer coextruded cast film of about 1.5 to 5 mils in thickness consisting essentially of a core layer of ethylene-vinyl alcohol comprising about 10% of the film thickness adhered on each side to nylon comprising about 5% of the film thickness, each nylon layer being adhered to a layer of modified polyolefin comprising ethylene vinyl acetate blended with high density polyethylene grafted with an unsaturated fused ring carboxylic acid anhydride, each of said modified polyolefin layers comprising about 40% of the film thickness;
• (2) a layer of about 0.5 to 2.0 mils of low density polyethylene adhered to one side of one of said modified polyolefin layers;
• (3) a layer of about 0.01 to 0.10 mils of a polyester-polyurethane primer adhered to said polyethylene layer;
• and
• (4) an outwardly facing layer of oriented polypropylene adhered to said primer layer.

A multi-ply laminate comprising:

• (1) a five-layer coextruded cast film of about 1.5 to 5.0 mils in thickness consisting essentially of a core layer of ethylene-vinyl alcohol comprising about 10% of the film thickness adhered on each side to nylon comprising about 5% of the film thickness, each nylon layer being adhered to a layer of modified polyolefin comprising ethylene vinyl acetate blended high density polyethylene grafted with an unsaturated fused ring carboxylic acid anhydride, each of said modified polyolefin layers comprising about 40% of the film thickness;
• (2) a layer of about 0.01 to 0.10 mils of a polyester-polyurethane primer adhered to said modified polyolefin layer;
• and
• (3) an outwardly facing layer of oriented polypropylene adhered to said primer layer.