How can PP membranes and PE membranes be distinguished in real life?
1) transparencyPE films are translucent, opaque, and, if in fact, a coil, they can give off a galactose. And the transparency of PP film is relatively high, and a roll of PP film is relatively clear.2) from the effect of tear stretch
Both from the density alone is difficult to distinguish, PP film density is generally 0.91, while the density of PE film in 0.92-0.96, little difference.
As a 7 - year - old practitioner in the plastic film and packaging industry, I would like to share with you how to distinguish between PP films and PE films
