3m Innovative Properties Company

John H Horns

Ronald Wayne Ausen

Michael R Gorman

William C Unruh

Anthony B Ferguson

Maria P Dillon

Claude Lavall&eacute;e

Thomas J Rieger

A die comprising two die cavities, with each capable of supplying polymeric material, and a distribution plate interposed between at least a portion of each of the two die cavities. The distribution plate has a dispensing edge and a plurality of extrusion channels. First and second extrusion channels extend from entrance openings at the first and second die cavities, respectively, to exit openings on the dispensing edge. The exit openings of the first and second extrusion channels are disposed in alternating positions along the dispensing edge. A method of extruding with such a die and an extruded article made therefrom are also disclosed. The method includes co-extruding a first polymeric composition and a second polymeric composition. The extruded article comprises a plurality of longitudinal first stripes of the first polymeric composition alternating with a plurality of longitudinal second stripes of the second polymeric composition.

Method of co-extruding, co-extrusion die, and extruded articles made therefrom

An extrudable composition comprising a major amount of a thermoplastic host polymer, a fluorocarbon polymer and a dendritic material wherein the extrudate demonstrates reduced levels of surface defects.

Extrudable thermoplastic compositions

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Edina, MN, United States of America

John H Horns