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Five-Layer Co-Extrusion PE Film - High-Performance Composite Substrate Film from China Suppliers and Factory
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 FieldsCan 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-ExtrusionCompared 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 FeedingThe 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 UniformityEquipped 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 InspectionEach 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 TransportationThe 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 a multi-layer plastic film produced by simultaneously extruding five different functional raw material layers through a single composite die. The process involves melting materials in five independent extruders, combining them in a shared die, inflating the melt with high-pressure air to form a film bubble, then cooling, flattening, and winding it into a finished roll.
What are the main advantages of five-layer co-extrusion over three-layer co-extrusion?
The five-layer structure allows for more precise distribution of functional layers, including dedicated barrier layers and reinforcement layers. This results in significantly improved tensile resistance, puncture resistance, and gas barrier properties compared to three-layer co-extruded films, making it suitable for more demanding packaging applications.
Which industries and applications is this PE film suitable for?
This film is well-suited for food packaging, hygiene product packaging, and pharmaceutical packaging industries. Its high-performance characteristics make it adaptable to a wide range of high-demand packaging scenarios where barrier performance, strength, and consistency are critical requirements.
How is the thickness consistency of the film ensured during production?
The production line is equipped with an automatic air ring system that continuously monitors the diameter and thickness of the film bubble in real time. It automatically adjusts cooling air volume and wind speed to maintain film thickness uniformity within a 3~5% tolerance range, preventing quality issues caused by uneven thickness in downstream processing.
What quality inspections are performed before the finished film is shipped?
Every batch undergoes comprehensive multi-dimensional quality inspection prior to shipment. This includes physical property testing (tensile strength, heat-sealing strength, puncture resistance), appearance inspection (surface flatness, presence of impurities or spots), and dimensional accuracy verification (width and length deviation), ensuring every roll meets established quality standards.
How are the finished film rolls packaged and protected during transportation?
Finished rolls are tightly wrapped with stretch film to prevent moisture and dust contamination, then secured onto standard pallets for stable stacking and handling. This packaging method effectively protects the film from dampness, dust, and physical damage caused by collisions during transit, ensuring products arrive in perfect condition.