LLDPE Stretch Film Roll This process of manufacturing stretch film / wrap film is best in industry as of now. Cast production process gives better strength and transparent phase of stretch film / wrap film. The gloss level of the film is of higher standards. This production output gives best operating process compared to blown production process for the end users. Till Date there are many manufacturers who are using Blow type technology but eventually it's costly compared to cast type manufacturing process. On the other end Blow type have other benefits like it can produce accurate product compared to cast process. For more detail you can contact us.