Scraper blade
AssigneePhillips Fibers Corporation
InventorArnold Michalski
Life of this patent
Estimating the term…
Abstract
A scraper blade comprises poly(arylene sulfide) and carbonaceous filler wherein the amount of poly(arylene sulfide) ranges from about 40 to about 80 percent by weight and the amount of carbonaceous filler ranges from about 60 to about 20 percent by weight.
Claims9
A scraper blade for cleaning the extrusion face of a spinneret used for spinning polyethylene terephthalate comprising poly(arylene sulfide) and carbonaceous filler wherein the amount of poly(arylene sulfide) ranges from about 40 to about 80 percent by weight and the amount of carbonaceous filler ranges from about 60 to about 20 percent by weight so that said scraper blade resists the tendency of the extruded molten polymer to stick thereto, said scraper blade being in the form of a plate having an edge tapered to produce a sharpened edge.
Dependencies are inferred from the claim text.