CaCO3 filler masterbatch is used in many applications in plastic production. And blown film extrusion (or blowing film) is one of the most popular application using calcium carbonate filler we can see in this industry.
Definition of blown film extrusion
Blown film extrusion is a technology that is the most common method to make plastic films, especially for the packaging industry. The process involves extruding a tube of molten polymer through a die and inflating to several times its initial diameter to form a thin film bubble. This bubble is then collapsed and used as a lay-flat film or can be made into bags. Usually, this process uses polyethylene, and they also use other materials as blends with these polymers.
Applications of blown film extrusion
Nowadays, we can find many products in daily life to use blown film extrusion technique to make them.