▎ 摘　　要

NOVELTY - Foamed polymeric insulation product comprises a polymeric foam having a first major surface and a second major surface, the polymeric foam formed from a foamable polymer composition comprising: a) a thermoplastic matrix polymer composition, and b) a blowing agent composition, and a barrier coating formed directly on at least one of the first major surface and the second major surface, the barrier coating being formed from a barrier coating composition comprising 20 wt.% to 99.9 wt.% of at least one polymer selected from polyvinylidene dichloride (PVDC), polyvinylidene fluoride (PVDF), polyvinyl chloride (PVC), polyvinyl alcohol, ethylene vinyl alcohol, polyurethane, styrene butadiene (SBR), and combinations or copolymers and 0.1 wt.% to 20 wt.% of a viscosity modifier. USE - Foamed polymeric insulation product used in a foamable polymer composition. ADVANTAGE - The foamed polymeric insulation product has a thermal resistance value (R-value) after 180 days of at least 4.75 per inch or at least 5.0 per inch, and average density of less than 10 pcf (pound per cubic foot). The foamable polymer composition provides strength, flexibility, toughness, and durability to the final product. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for manufacturing polymer foam, which involves providing a matrix polymer melt into an extruder, injecting a blowing agent composition into the matrix polymer melt within the extruder to form a foamable polymer composition, extruding the foamable polymer composition to form a polymer foam having a first major surface and a second major surface, applying directly to at least one of the first major surface and the second major surface of the polymer foam a barrier coating composition comprising 20 wt. % to 99.9 wt. % of at least one polymer selected from polyvinylidene dichloride (PVDC), polyvinylidene fluoride (PVDF), polyvinyl chloride (PVC), polyvinyl alcohol, ethylene vinyl alcohol, polyurethane, styrene butadiene (SBR), and combinations or copolymers thereof; and 0.1 wt.% to 20 wt.% of a viscosity modifier, where the barrier coating composition forms a barrier coating on the at least one of the first major surface and the second major surface of the polymer foam, thereby forming a coated polymer foam. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of an extrusion apparatus. 100Extrusion apparatus 102Barrel 104Screw 106Spiral flight 108Feed hopper