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Three-Layer Co-extruded PET/PP Functional Films Line
Three-layer co-extruded PET/PP functional films line is used to produce high-performance barrier and composite packaging films. Learn about our co-extrusion working principles, product advantages, technical details, and customized solutions. Suitable for food, pharmaceutical, and industrial packaging applications.
Description
How It Works
Three-Layer Co-extruded PET/PP Functional Films Line is based on multilayer co-extrusion technology. Its core lies in combining two or three different polymer materials (such as PET and PP) in a molten state through a precision multilayer co-extrusion die, and then cooling, drawing, and winding them to form an integrated multilayer film.
- Raw Material Handling and Feeding: PET, PP, and functional masterbatches are fed into independent vacuum feeding, drying, and extrusion systems to ensure the purity and dryness of the raw materials.
- Simultaneous Melt Extrusion: Three high-performance single-screw extruders (configurable according to raw material characteristics) precisely plasticize, meter, and stably output different materials.
- Precision Co-extrusion Composite: The three-layer molten material flow is guided into a three-layer co-extrusion die, where it merges to form a composite film with clear interfaces and uniform thickness.
- Shaping and Cooling: The film is then drawn onto large-diameter, high-precision cooling rollers for rapid cooling and shaping, determining the film's optical properties and dimensional stability.
- Winding: Dedicated servo drive, dedicated servo motor reducer, constant tension winding.
Key Features
Superior Barrier Performance: A smart combination of PET (high barrier, high strength) and PP (high moisture resistance, heat-sealable) achieves excellent barrier effects against oxygen, water vapor, and fragrance.
Exible Structural Design: The three-layer structure (e.g., PET/adhesive layer/PP) allows for flexible adjustment of the layer ratios to meet different physical and chemical performance requirements.
Modular Intelligent Control: A user-friendly structural design enhances operation. Core components are sourced from internationally renowned brands (Siemens), and a PLC+ automatic control system enables precise recording and traceability of process parameters.
Casting Roller: The height of the casting roller is adjustable to meet the process requirements of casting materials with different melt strengths.
Die Head: A digitally designed co-extrusion die head ensures smooth flow without dead zones or material stagnation, resulting in uniform material output.
A comprehensive pilot/small-scale production solution from raw materials to film formation. The production line is compact and fully functional, making it particularly suitable for:
1. New Material R&D: Universities and research institutes developing functional films with new resins, formulations, and structures.
2. Process Optimization: Enterprises exploring and optimizing production process parameters, providing reliable data for large-scale production.
3. Small-Batch Custom Production: Meeting market demands for small-batch, multi-variety specialty and high-performance films.
4. Customer Sample Production: Rapidly producing sample films required by customers, accelerating product verification and order acquisition.
product parameters
| Model | FDCL-25/35 | Applicable Materials | PET, PP, PE, EVOH, PA etc. |
| Number of co-extruded layers | 3 | Extruder configuration | 3 units, Φ25-45mm, L/D 28:1 |
| Die head width | 300mm | Product width | 0-250mm |
| Product thickness | 0.05-0.15mm | Roller width | 350mm |
| Temperature control range | Rt-350℃ | Temperature control accuracy | ±1℃ |
| Operating voltage | 3φ380VAC±10%, 1φ220VAC±10%, 50H | Control System | PLC |
Shipping & Packaging
- Packaging Method: Export-grade wooden crates, waterproof and rustproof internally. All equipment parts are clearly labeled.
- Shipping Method: We can ship by sea (EXW/FOB/CIF, etc.), the specific method to be determined based on the equipment's volume, weight, and customer requirements.
- Document Support: We provide a complete packing list, commercial invoice, certificate of origin, equipment operation manual, and technical drawings to facilitate smooth customs clearance.
- Installation Guidance: We offer remote video guidance or dispatch engineers for on-site installation and commissioning (optional service).
FAQ
Q1: Can this production line produce films made of other materials?
A: Yes. By changing the appropriate screw and die assembly and adjusting the process temperature, this line is compatible with various thermoplastics, such as LDPE, HDPE, PA, EVOH, etc.
Q2: How long does it take from installation to producing qualified samples?
A: Provided the customer's on-site infrastructure (power, ground) is complete, our engineers can complete installation, commissioning, and operation training within 1-2 weeks, and assist in producing the first batch of qualified films.
Q3: Do you provide process technical support?
A: Yes. We not only provide the equipment, but also comprehensive process start-up support, including basic formulation suggestions, parameter setting guidance, and initial production support to ensure the customer can successfully operate the equipment.
Q4: What is the minimum order quantity (MOQ) and lead time?
A: The MOQ is 1 set. The standard lead time is approximately 90-120 days, depending on the customization options.
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