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Five-Layer Co-Extrusion PE Film - High-Quality Substrate Film from China Suppliers & Factory for Various Packaging Needs
Five-Layer Co-Extruded Blown PE Film
It is produced by professional five-layer co-extruded blown molding process with a rigorous and efficient workflow: First, five independent extruders are used to melt and plasticize raw materials with different functions (such as enhancing barrier properties, improving toughness) at high temperatures; then, the five kinds of molten raw materials are accurately transported to the same composite die to realize the co-extrusion of multi-layer raw materials; after the extruded composite film material flows out of the die orifice, it is inflated by high-pressure air to form a film bubble, which is pulled upward by the traction system at the same time; during the process, the film bubble is quickly shaped by the cooling system, then flattened and trimmed, and finally wound into a flat PE film. The whole process ensures that the functional layers are tightly integrated and the performance is stable.
🔑 Core Advantages
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🌐1. Wide Service Fields Can meet the professional needs of food, hygiene packaging materials and pharmaceutical packaging materials enterprises, adapting to various high-demand packaging scenarios.
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⚡2. Superior to Three-Layer Co-Extrusion Compared with three-layer co-extrusion, the five-layer structure can distribute functional layers more accurately (such as setting independent barrier layers and reinforcement layers), greatly improving the comprehensive performance of the film such as tensile resistance, puncture resistance and gas barrier properties, and adapting to more complex packaging needs.
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🎯3. Precise and Controllable Feeding The equipment feeding system is fully equipped with a weight-per-meter control system, no manual mixing is required. The automated system accurately controls the dosage of each layer of raw materials, ensuring the accuracy of raw material ratio. The production data is recorded in real time and traceable, greatly improving the batch stability of products.
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📐4. High Thickness Uniformity Equipped with an automatic air ring system, it can monitor the diameter and thickness of the film bubble in real time, automatically adjust the cooling air volume and wind speed, ensuring that the film thickness uniformity is controlled within 3~5%, and avoiding the impact of uneven thickness on subsequent processing.
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🔍5. Strict Finished Product Quality Inspection Each batch of finished products undergoes multi-dimensional quality inspection before leaving the factory, covering physical properties (such as tensile strength, heat-sealing strength, puncture resistance), appearance (such as film surface flatness, presence of impurities or spots) and dimensional accuracy (such as width and length deviation), ensuring that every roll of film delivered meets quality standards.
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📦6. Professional Packaging and Transportation The finished products are tightly wrapped with stretch film, and then fixed and packaged with standard pallets, which effectively prevents the film from getting damp, being contaminated with dust or loose rolls due to collision during transportation, ensuring that the products are delivered to customers in good condition.
Frequently Asked Questions
What is five-layer co-extruded blown PE film and how is it made?
Five-layer co-extruded blown PE film is produced using five independent extruders that simultaneously melt and plasticize different functional raw materials. These materials are merged in a composite die and inflated into a film bubble using high-pressure air. The bubble is then cooled, flattened, trimmed, and wound into a finished roll, ensuring tightly integrated functional layers and stable performance.
What are the advantages of five-layer co-extrusion over three-layer co-extrusion?
The five-layer structure allows for more precise distribution of functional layers, including independent barrier and reinforcement layers. This significantly enhances tensile resistance, puncture resistance, and gas barrier properties compared to three-layer co-extrusion, making it suitable for more complex and demanding packaging applications.
How is the thickness uniformity of the film ensured during production?
The production line is equipped with an automatic air ring system that monitors the diameter and thickness of the film bubble in real time. It automatically adjusts the cooling air volume and wind speed to maintain film thickness uniformity within a range of 3~5%, minimizing the impact of uneven thickness on downstream processing.
What industries and applications is this PE film suitable for?
This five-layer co-extruded blown PE film is suitable for food packaging, hygiene product packaging, and pharmaceutical packaging. Its superior barrier and mechanical properties allow it to adapt to a wide range of high-demand packaging scenarios across these professional industries.
What quality inspections are performed before the film is shipped?
Each batch undergoes comprehensive multi-dimensional quality inspection covering physical properties (tensile strength, heat-sealing strength, puncture resistance), appearance checks (surface flatness, absence of impurities or spots), and dimensional accuracy (width and length deviation). This ensures every roll meets strict quality standards before delivery.
How is the finished PE film packaged and protected during transportation?
Finished film rolls are tightly wrapped with stretch film and secured on standard pallets for shipment. This packaging method effectively protects the product from moisture, dust contamination, and physical damage caused by collisions during transit, ensuring products arrive at customers in excellent condition.