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First PLA blown film.

Plastic Suppliers Inc. in Columbus, Ohio, an extruder of blown PS film for labels and envelope windows, has modified its process to make the world's first blown film out of polylactic acid (PLA) biopolymer. Nature-Works PLA from Cargill Dow LLC, Minnetonka, Minn., is derived from cornstarch by bacterial fermentation. It is fully compostable. Cargill Dow had not believed PLA's low viscosity was suitable for blown film extrusion. Plastic Suppliers makes monolayer PLA film 1 to 3 mils thick in glossy and matte finish and is developing thicker gauges. PLA film reportedly has excellent clarity, scratch resistance, and dead fold. Applications being tested include envelope and carton windows and labels for returnable bottles. Cargill Dow: Tel: (952) 742-0400 * PTDirect: 112BV
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Title Annotation:Extrusion
Publication:Plastics Technology
Geographic Code:1USA
Date:Jan 1, 2005
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