Patent ID: 7807260
Filing Date: 2010-10-05
Classification: B29C,B29L,B32B,Y10T

Abstract:
1. A multi-layer foamed polymeric article of manufacture, comprising: a non-laminated multi-layer thermoplastic material sheet, the multi-layer thermoplastic material sheet having first and second discrete outer skin layers sandwiching a plurality of discrete inner foamed layers, wherein the two outer skin layers and plurality of discrete inner foamed layers are integral with one another, and wherein the plurality of discrete inner foamed layers include at least (i) two substantially identical second inner foamed layers positioned immediately adjacent to the two outer skin layers, (ii) two substantially identical third inner foamed layers positioned immediately adjacent to the second inner foamed layers, and (iii) a central fourth inner foamed layer positioned immediately adjacent to and interposed between the third inner foamed layers, wherein the thickness of the two second inner foamed layers is greater than the thickness of the two third inner foamed layers, and wherein the thickness of the central fourth layer is less than the thickness of either of the two third inner foamed layers.