I'm a engineering student currently studying about plastic moulding machines. There's an assignment where I have to explain how is the plasticising stroke determined. The actual question given is, "Explain the procedure to determine the plasticising stroke for MicroPower injection moulding machining."

I haven't learn what is plasticising stroke, the teacher wants me to find out myself, but I can't find resources just by Googling. So, I made a forum account here just to asked for help.

I want to know what is plasticising stroke and how is it determined.