Blown Stretch Wrap uses a melted plastic resin extracted into a closed circular bubble with air blown throgh to cool the resin. The inflated bubble is pulled upward by air and continuously adding more resin. Airflow is also used on the outside of the bubble to cool the film as it is being pulled upward. A continuous seamless tube of thin film is created. After the film has cooled it is slit, flattened, and wound into rolls.
Because blown stretch wrap uses a slower air cooled method, the film can crystallize and have a slight haze. Blown Stretch Wrap is often stronger than cast and can offer the ability to use a lower gauge compared to cast. We recommend blown film for companies wrapping very heavy pallet loads with sharp edges and corners.