A new feed stream for coextruded wood-plastic composite profiles and boards will be presented this month at Wood Plastic Composites 2008,Oct.14-16 in Vienna,sponsored by Applied Market Information(AMI)Ltd.in the U.K.(U.S.office in Wyomissing,Pa.).R&D firm Conenor Ltd.in Tampere,Finland,uses recycled aluminum-lined plastic and paper cartons and metalized films.These are shredded,densified,and fed gravimetrically into Conenor's Conex conical two-rotor extruder together with wood fibers and HDPE regrind.Proportions are typically 70% aluminum/plastic/paper waste,20% wood fiber,and 10% recycled HDPE plus additives.The aluminum mix forms a core coextruded with a cap layer.
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