LOW DENSITY LIGHT WEIGHT FILAMENT AND FIBER

摘要

A lightweight, low density fiber is disclosed along with a method of manufacture. The fiber includes a thermoplastic polymer, more than fifty percent functional void fraction in the form of foam-forming cells for reducing the density of the fiber as compared to a solid fiber, at least fiv e void cells per axial cross section for increasing the structural integrity o f the fiber as compared to less uniform foams, and submicron-sized particles o f a fluorocarbon polymer, present in an amount less than 10 percent by weight.