Blown film extruder is the key equipment to produce plastic film. Below is a detailed description of blown film extruder:
1.Definitions and working principles
Definition: Blown-out membrane extruders heat and melt plastic particles, then push the plastic melt out of the die by rotating and heating the screw. The the extruded film bubble then blown with compressed air to form a tubular membrane, which is then cooled, molded, pulled and wound.
How it works: Blown film extruder consists of extrusion system, die head, air ring, traction system, winding system and so on. The extrusion system heats, melts and conveys plastic particles forward. The die head forms cylindrical film bubble of molten plastic. The air ring is used to cool the film bubble to solidify and stabilize their shape. The traction system pulls the cooled film forward. The winding system winds the film into a coil.
2.Type and characteristics
Type: Blown film extruders can be divided into double-layer blown film extruders, double layer blow film extruder, three layer blow film extruder, extrusion layers. Different types of blown film extruders are suitable for the production of different structures and properties of plastic film.
Features:
High efficiency: Blow film extruder production efficiency, can continuously produce a large number of plastic film.
Flexibility: By adjusting extruder parameters and die structure, plastic films of different thickness, width and properties can be produced.
Energy-saving: Modern blown film extruders usually adopt advanced energy-saving technologies such as frequency conversion speed regulation and waste heat recovery to reduce energy consumption and production costs.
3.Application areas
Plastic film produced by blowout machine is widely used in packaging, agriculture, construction, medical and other fields. For example, in the packaging field, plastic film can be used in food packaging, pharmaceutical packaging, necessities packaging, etc.; in the field of agriculture, plastic film can be used in agricultural film, greenhouse films, etc.; in the field of construction, plastic film can be used in waterproof rolls, insulation materials, etc.
4. Development trend
With the development of science and technology and the change of market demand, blown film extruders is developing and innovating. In the future, blown film extruders will develop in a more efficient, energy-efficient, environmentally friendly and intelligent direction. For example, adopting more advanced extrusion technology and control systems to improve production efficiency and product quality; developing new environmentally friendly materials to reduce environmental impact; and adopting intelligent technologies to automate and intelligently manage production processes.
