Patent ID: 7070850

Claim:
A drag reduction article comprising: (a) a fluoropolymer backing layer having an outer, exposed patterned surface that reduces the drag caused by a fluid flowing over the surface, wherein the backing layer comprises a blend of first and second polymers, the first polymer comprising at least 70% by weight of a fluoropolymer, and the second polymer comprising as much as 30% by weight of an acrylic polymer; (b) a pressure-sensitive adhesive bonding layer adjacent to the backing layer; and (c) an intermediate layer between the backing and adhesive bonding layer, wherein the intermediate layer comprises a blend of first and second polymers, the first polymer comprising as much as 30% by weight of a fluoropolymer, and the second polymer comprising at least 70% by weight of an acrylic polymer, and wherein the article is free of a reinforcing layer.