Macro Engineering: Extrusion Coating Line for PVdC in China

Possibly the only commercial system for extrusion coating with PVdC is running in China. Its current use is coating 1-4 mils of PVdC onto 10- mil rigid PVC for pharmaceutical blister packs. The developmental line was built two years ago by Macro Engineering & Technology Inc. in Mississauga, Ont. It corporates options for coextrusion and lamination. Macro also built the Duranickel coating die, an oil-cooled coat-hanger design. The line runs a developmental coating grade of Saran from Dow Plastics. According to Macro, extrusion coating takes less expensive equipment to put a PVdC moisture barrier onto PVC than does the standard emulsion-coating route.

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