The two different types of stretch film are blown and cast, with the primary difference between the two being the process in which each is created and manufactured.
What is the difference between blown and cast stretch film/wrap?
Difference between Blown and Cast Stretch Films
A Guide to Pallet Wrap: Types, Pros & Cons, & Applications
Blown vs Cast Stretch Wrap Film: What Are the Differences?
WHAT YOU NEED TO KNOW ABOUT STRETCH FILM! - STRETCH FILM / STRETCH WRAP BASICS
Stretch Wrap 101: What Is Industrial Plastic Wrap, Types of Plastic Stretch Wrap, & How to Use
Blown vs. Cast - How is stretch film made?
Blown Film vs. Cast Film - Which Stretch Film Should You Use?
Stretch Film Vs Shrink Film -What is the difference?