Preparation of High Modulus Poly(Ethylene Terephthalate): Influence of Molecular Weight, Extrusion, and Drawing Parameters

Table 1

Extrusion parameters for PET “grade M.”

Process parameter	Value
Zone 1 (feed zone)	290°C
Zone 2 (compression zone)	260°C
Zone 3 (metering zone)	260°C
Zone 4 (vertical adaptor)	265°C
Zone 5 (die)	260°C
Screw rotation speed	20/50 rpm
Take-up speed	10/20 m·min^−1