* Controlling flow inside the die to
give the desired velocity profile at the die exit; and
Since dies must evenly contact the cutting or striker plate to ensure a clean PET cut and avoid damage, accurate "make-ready" of the die to
cutting plate is critical.
The general practice is to lubricate appropriate locations during the shutdown of a die to
ensure protection from freeze-up.
* The roll rotation pulls the banked compound in the preform die past the final die to
produce the desired shape;
Adjustments are made from the back of the die to
center the tip, which is on the ball swivel near the discharge opening.
The other almost instantly diverts melt flow from one stationary die to