Blown Film Plants

Blown Film is a manufacturing process that produce films of plastic sheeting and tubes. These sheets or tubes can either be fully cylindrical, or have other object inserted into them so they form useful objects like shopping bags, rubbish bags or cling wrap.28-Jul-2017Introduction of Blown Film Plant:- Blown Film Plant 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 polumer through a die and inflating to several times its initial diameter to form a thin film bubble.Plastic melt is extruded through an annular slit die, usually vertically, to form a thin walled tube. Air is introduced via a hole in the centre of the die to blow up the tube like a balloon. Mounted on top of the die, a high-speed air ring blows onto the hot film to cool it.