Blow molding - material behaviour

As a result of a recent project I am busy with, it is very usefull that I get familiar with the fundamentals of (stretch) blow molding.
I'm especially interested in the differences in material behaviour/properties (during the process) between PET, PP en PE, like blow up ratio's, natural stretch ratio's etc. Furthermore tips and information about obtaining a decent pre-form design would be very welcome.

I wondered if someone here can mention some links containing usefull information. Many thanks in advance!