Patent ID: 7935225
Filing Date: 2011-05-03
Classification: D01F,D21F,Y10T

Abstract:
1. A woven papermaker's forming fabric comprising extruded thermoplastic monofilaments as each of the warp and weft components, wherein at least a portion of the monofilaments are formed from a polymer that is a physical blend consisting of a. from 51% to 90% pbw (parts by weight) of a poly(ethylene naphthalate) (PEN) polyester whose melt point as determined by Differential Scanning Calorimetry is between 249° and 278° C. at a heating rate of 20° C./minute and whose intrinsic viscosity when measured according to ASTM D4603-86 using phenol/1,1,2,2 tetrachloroethane solution at 30° C. is between 0.65 and 0.85, and b. from 49% to 10% pbw of a poly(ethylene terephthalate) (PET) whose intrinsic viscosity when measured according to ASTM D4603-86 using phenol/1,1,2,2 tetrachloroethane solution at 30° C. is between 0.55 and 1.05.