The working principle of automatic stretch film machine
Release time:
2025-03-04 15:24
Fully automatic stretch film machine is an efficient solution for modern packaging industry, its working principle covers raw material processing, film forming and intelligent control and other links to ensure the automation and stability of the production process. Below we tell you in detail in 4 processes, what is the working principle of automatic stretch film machine?
1. Raw material processing
The machine feeds plastic granules (e.g. LLDPE) into the extruder through an automatic feeding system. Under the action of screw rotation and heating, the raw material gradually melts into a uniform plastic melt. Intelligent temperature control system regulates the temperature precisely to avoid plastic degradation.
2. Film moulding
The molten plastic is extruded through the die to form a film. The equipment adopts multi-layer co-extrusion technology, which can extrude multiple layers of film at the same time to enhance product performance. The extruded film passes through a stretching device to achieve bi-directional stretching (longitudinal and transversal), which enhances the strength and transparency of the film. Subsequently, the film enters the cooling zone for rapid curing by air or water cooling system.
3. Winding and cutting
The cooled film is wound up by an automatic tension control system to ensure neat and tight rolls. The machine is equipped with an automatic roll change function for continuous production. Finally, the film is automatically cut to a pre-set length to form the finished product.
4. Intelligent control
The core of the fully automatic machine is the intelligent control system, which monitors and adjusts the process parameters in real time through PLC and touch screen interface to ensure efficient and stable production.
Through raw material processing, film forming, winding and cutting and intelligent control, the fully automatic stretch film machine achieves efficient and stable film production, which is widely used in packaging industry.
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