Abstract: A method of forming a three dimensional object comprising: moving a first polymer material (30) through a first feed channel (38) of an extrusion die (10) having multiple feed channels; moving a second material (40) through a second feed channel (38) of the extrusion die, wherein the second material comprises a solvent, a release agent, a coating or a second polymer material; forming a multilayered extrudate (20) along an extrusion axis, wherein the multilayered extrudate comprises the first polymer material (30) and the second material (40), and wherein the extrusion axis is parallel to the movement of the multilayered extrudate; depositing a multitude of layers of the multilayered extrudate in a preset pattern on a platform (2); and fusing the multitude of layers to form the three dimensional object. An article of manufacture comprising: a three dimensional object is also disclosed.

Abstract: This invention in one aspect is a polyoxymethylene compound exhibiting an improved balance of properties and volume resistivity of 100-106 ohm-cm, which comprises polyoxymethylene, polyethylene glycol, metal oxide, high-structure carbon black and a comb polymer. The invention is more particularly directed to a polyoxymethylene compounds and molded articles therefrom in which the compound comprises 30 to 98.7% by weight of a polyoxymethylene homopolymer or copolymer, from 0.1 to 10% by weight of a polyalkylene glycol, from 0.1 to 10% by weight of metal oxide, from 1% to 15% of a high structured particulate carbon black, and from 0.1 to 15% by weight of a comb polymer containing a relatively less polar backbone with relatively more polar side chains.