Question

Co-extrusion uses adhesives for binding between two layers.

(a) True

(b) False

The question was asked during an internship interview.

I'm obligated to ask this question of Extrusion and Calendering in Thermoplastics topic in section Thermoplastic Polymers Properties & Processing of Food Packaging Technology

Answer 1

The correct choice is (b) False

The best explanation: The statement is false. Co-extrusion doesn’t use adhesives for binding between two layers. Co-extrusion uses solely heat for binding different layers of plastics. Lamination used adhesives for binding between two layers. Hence, co-extruded films are generally thicker than laminated films.