Question

Which of the following is not used for conversion of extruded plastic into sheets?

(a) Cast Film Extrusion

(b) Slit Die Extrusion

(c) Blown Film Extrusion

(d) Micro Extrusion

I have been asked this question during an interview.

My doubt stems from Extrusion and Calendering in Thermoplastics topic in section Thermoplastic Polymers Properties & Processing of Food Packaging Technology

Answer 1

Right option is (d) Micro Extrusion

For explanation: Micro Extrusion is not used for conversion of extruded plastic into sheets. Micro extrusion is the process to create comparatively smaller sized objects. Whereas, Cast Film Extrusion, Slit Die Extrusion and Blown Film Extrusion are used for conversion of extruded plastic into sheets.