Step-by-Step Guide: How a 7-Layer High Speed Bubble Film Machine Works
The 7-layer high-speed bubble film machine is an advanced system designed for efficient and stable bubble film production. By integrating multi-layer co-extrusion technology with precise process control, it enables the manufacturing of high-performance packaging materials with consistent structure and reliable mechanical properties. Understanding its working process is essential for optimizing production efficiency, material utilization, and final product quality.
1. Raw Material Feeding
The production process begins with multiple extruders feeding different types of raw materials, such as LDPE, LLDPE, recycled resins, anti-static additives, barrier materials, and toughening agents.
Each material is processed independently, allowing flexible formulation design and functional layer customization.
2. Melt Extrusion
Each extruder heats and melts the resin under controlled temperature conditions. Independent control of temperature and pressure ensures stable melt flow and uniform material properties, which are critical for multi-layer co-extrusion.
3. 7-Layer Co-Extrusion Die Forming
The molten polymers are delivered into a 7-layer distributor and a high-precision flat T-die.
Inside the die, multiple melt streams are combined into a single multi-layer sheet with a well-defined layer structure, enabling enhanced strength, sealing performance, and surface characteristics.
4. Bubble Formation
The composite sheet passes through a vacuum bubble forming system, where a vacuum roller shapes the material into uniform air bubbles.
A sealing layer is applied simultaneously to enclose the air pockets, ensuring consistent cushioning performance.
5. Cooling and Setting
The formed bubble film enters a multi-zone cooling system. Rapid and controlled cooling solidifies the material, stabilizes the bubble structure, and maintains dimensional accuracy.
6. Traction and Slitting
A traction system continuously pulls the film at a stable speed while maintaining consistent tension.
An inline slitting unit adjusts the film width according to production requirements, supporting different packaging specifications.
7. Automatic Turret Winding
The finished film is collected באמצעות a dual-station turret winder, which enables continuous winding without stopping the production line.
This system ensures uniform roll formation, high efficiency, and reduced downtime during operation.
Technical Advantages of 7-Layer Bubble Film Machine
- Multi-layer co-extrusion improves film performance and functionality
- Independent extruder control ensures stable processing conditions
- Uniform bubble formation enhances cushioning consistency
- Continuous production increases overall efficiency
- Flexible material combinations support diverse application requirements
