Compatibility of polyvinylidene chloride with mechanical recycling of polyolefins

The exceptional low permeability to oxygen and water of PVDC the retention barrier properties even in humid conditions explain its success for packaging food industry as layer Polyolefins (PO) multilayer films, whose contribution reduction waste is largely recognized. Several chemical recycling technologies have emerged recent years that, together with methodologies based on separation layers by use solvents, will strongly increase a near future extent including PVDC-containing ones. At same time, it generally accepted that several these be complemented now dominating mechanical recycling. A lack detailed study literature general confusion between very different grades, without internal stabilization, led idea dehydrochlorination would cause quality recyclate obtained PO presence corrosion risk equipment. In this study, effect stabilized grade developed coextrusion, at concentration typical real life mix suitable condition, has been investigated pilot scale extruder tests were performed. conclusion, quantities found streams are compatible excellent characteristics, extrusion temperatures high 220°C, no damage structure, only minimum discoloration, can mitigated relatively additives extrusion,