Patent ID: 8309478
Filing Date: 2012-11-13
Classification: B32B,Y10T

Abstract:
1. A consolidated fibrous structure comprising at least two (2) fibrous layers, wherein each fibrous layer comprises tape fibers, wherein the tape fibers comprise: a core comprising polypropylene; a skin layer disposed on at least a portion of the core, wherein the skin layer comprises a polymer, wherein the polymer comprises a co-polymer having at least 50% α-olefin units and is characterized by a number-average molecular weight of about 7,000 g/mol to 50,000 g/mol, a viscosity of between about 2,500 and 150,000 cP measured at 170° C., and a melting temperature lower than the melting temperature of the core; wherein at least a portion of the skin layers of the fibers in each fibrous layer are fused to at least a portion of other skin layers of fibers within the same fibrous layer, at least a portion of the skin layers of the fibers of each fibrous layer are fused with at least a portion of the skin layers of the fibers in an adjacent fibrous layer.