The cast film process involves the extrusion of molten polymers through a flat die to form a thin film. This film is "pinned" to the surface of a chill roll with an air knifeorvacuum box. The molten polymer quenches immediately creating a very clear film. As in blown film, co-extrusion can also be utilized to create multilayer film structures.

Typical Medical Applications: Flexible Tubing, IV Solution Bags, Flexible Device Packaging

Typical Processing Conditions for Extrusion Cast Film
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Polymers Inherent Viscosity Extruder Temperature °F(°C) Melt/Die °F(°C) Chill Roll °F (°C) Chill Roll Type Dehumidifying/ Desiccant Drying Temp °F(°C) Drying Time, hr Data Sheet MSDS Z1 Z2 Z3 Z4 Z5 Eastar ™ 6763 0.75 480(249) 490(254) 500(260) 475(246) 475(246) 480 (249) 100 (38) Chrome Polish 150(66) 4-8 Eastman Embrace™+ 0.75 480(249) 490(254) 500(260) 475(246) 475(246) 480(249) 100(38) Chrome Polish 150(66) 4-8 Ecdel™ 9965 4 400(204) 450(232) 480(249) - 500(260) 480(249) - 500(260) 480(249) - 500(260) 480(249) - 500(260) 50(10) -75(24)* Matte or Teflon 150(66) 4-8 Ecdel™ 9966 10 400(204) 450(232) 480(249) - 500(260) 480(249) - 500(260) 480(249) - 500(260) 480(249) - 500(260) 50(10) - 75(24)* Matte or Teflon 150(66) 4-8 Ecdel™ 9967 20 400(204) 450(232) 480(249) - 500(260) 480(249) - 500(260) 480(249) - 500(260) 480-500 50(10) - 75(24)* Matte or Teflon 150(66) 4-8 *If a two roll stack is used the second chill roll temperature shoul be 100-150 degrees. If sticking occurs, increase chil roll temperatures to reduce. +Orientation required for shrink film applications.