Macro Now Offering PLA Foam Extrusion Line
Film and sheet extrusion machinery supplier Macro Engineering & Technology Inc. (Canada) has introduced a new extrusion line to produce polylactic acid (PLA) foam.
The line uses tandem extruders to produce foamed PLA sheet between 1.2 and 5.0 mm thick and up to 1,270 mm wide with a foam density of 0.07 g/cc (16x expansion ratio). The sheet can be thermoformed into compostable clamshell packaging and trays used for cold food applications.
Macro uses a proprietary new extruder design to address obstacles that are inherent to foaming PLA, namely working around the material’s low melt strength, melt crystallinity and narrow processing window. The result is uniform melt temperature distribution and reliable foaming.
Macro is actively developing new technologies for use with this extrusion line to expand the application range of foamed PLA. Recent trials at Macro’s R&D lab have shown promise for hot-fill applications using thermoformed PLA foam as an alternative to polystyrene packaging.
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Macro Engineering & Technology is a global supplier of film and sheet extrusion systems that specializes in barrier film lines and custom engineered extrusion systems. Founded in 1978, Macro’s approach is to help film and sheet producers reach their production goals through a project-oriented philosophy and an uncompromising commitment to developing innovative technologies.
Macro manufactures blown, cast and biaxially-oriented coextrusion lines for multilayer films up to 11-layers. The company also supplies sheet extrusion lines for specialty applications, along with extrusion coating and laminating lines. Macro also specializes in developing customized winding solutions and supplies winding equipment to meet the needs of complex requirements.
Macro’s equipment is used throughout the world to manufacture value-added products in the food packaging, medical, and industrial markets.
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