Patent ID: 9381723
Filing Date: 2016-07-05
CPC Classification: B29C,B32B,Y10T

Claim Text:
1. A microcellular thin film, comprising: a first exterior side separated from a second exterior side, the separation of which defines the thickness of the thin film; at least two or more layers, each layer is a monolithic thermoplastic polymeric material, wherein the two or more layers are laminated to form the thickness of the thin film, wherein each polymeric thermoplastic material layer comprises intralayer microcellular cells, wherein the intralayer microcellular cells are formed from interior cell walls and the intralayer microcellular cells are interior within the monolithic thermoplastic polymeric material, wherein each of the two or more layers of monolithic thermoplastic polymeric material is a 100% by weight thermoplastic polymeric material, and wherein the at least two or more layers comprise different thermoplastic polymeric materials; at least one of the first or second exterior sides of the thin film is formed of cell walls, wherein the cell walls at the exterior surface have substantially the same thickness as the interior cell walls of the intralayer microcellular cells; and wherein the thin film is on average two to three cells thick from the first exterior side to the second exterior side, and the cells are individually closed by the cell walls.