What are the main components of a blown film machine?

Apr 12, 2026

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The main components of a blown film machine include an extruder, die head, stencil, cooling system, bubble stabilizer, traction auxiliary equipment, winding device, and other auxiliary equipment.

 

Extruder: Composed of a screw, barrel, and hopper, it melts plastic raw materials into a molten material.

Die Head: Includes a filter screen and filter plate to filter impurities and ensure the purity of the melt.

Die Head: Employs a spiral structure to extrude the melt into a continuous film.

Cooling System: Includes a cooling air ring and blower to regulate film temperature and control film thickness and uniformity.

Bubble Stabilizer: Utilizes an adjustable structure with sizing rings and rods to stabilize the film bubble shape for easier subsequent processing.

Traction Auxiliary Equipment: Composed of a traction frame, herringbone plate, and traction rollers, it pulls the film. The herringbone plate's angle can be adjusted according to the blown film specifications.

Rolling Device: Responsible for winding the film into rolls for easy storage and transportation.

Other Auxiliary Equipment: Such as air compressors, blowers, machine frames, and electrical control boxes, providing necessary compressed air, driving traction, machine support, and electrical control.

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