The PE multilayer coextrusion barrier sheet production line uses the most advanced multilayer coextrusion technology, which is specially used to produce high-performance polyethylene sheets.This production line uses a very innovative technology to laminate multilayer materials (including barrier resins). The process improves the barrier properties of the sheet while maintaining the flexibility and durability of polyethylene, ensuring cost-effectiveness. This makes it ideal for packaging materials that require protection from moisture, oxygen, and light, such as food, pharmaceuticals, and other sensitive products. The production line is versatile and suitable for a wide range of applications.
Working Principle:
This production line uses multi-layer co-extrusion technology to melt and extrude various polymers through different extruders. Each extruder processes a layer of material, so that a multi-layer structure with customized barrier properties can be made. The outer polyethylene layer has mechanical strength, and the inner special barrier materials (such as ethylene-vinyl alcohol copolymer and nylon) can well block moisture, oxygen and ultraviolet rays. These layers are quickly cooled after being fused in a specially designed mold to ensure the quality integrity. After cooling, the sheet will be stretched and cut into specified specifications for subsequent processing or packaging.
Main technical features:
Multi-layer co-extrusion technology: The line is equipped with state-of-the-art multi-layer co-extrusion capabilities, which enable the combination of multiple materials with different characteristics. This allows the integration of barrier resins such as EVOH or nylon in the core layer, which enhances the film’s resistance to oxygen, moisture and light, while maintaining the strength and flexibility of the outer PE layer.
High-precision die and calibration system: the design precision of extrusion die is very high, which can ensure the uniform distribution and thickness of materials in all layers in the whole production process, which is of great benefit to the formation of excellent surface quality and mechanical properties of the final product.
Advanced barrier materials: The inner layer can be customized with barrier materials such as EVOH, which have excellent resistance to oxygen and moisture, extending the shelf life of the packaged product. These high-barrier materials are essential for food packaging, pharmaceutical packaging and other applications that require long-term protection from environmental factors.
High-performance cooling and traction system: The advanced cooling system quickly solidifies the co-extruded sheet, ensuring a smooth surface without bubbles. The traction system ensures that the sheet is evenly stretched, preventing any stretching, deformation or breakage. These systems help maintain high product quality and smooth production operations.
Automatic control system: The production line is equipped with an automatic programmable logic controller (PLC) control system with a friendly interface, which can monitor and accurately control the production process in real time. This automation improves the consistency of production, reduces the possibility of human error and improves the overall production efficiency.
Sheet Specification Customization: The extrusion line can flexibly adjust the thickness, width and multi-layer combination of the sheet to meet the specific requirements of different application areas. DWELL’s customized configuration allows the production of sheets according to the unique needs of each customer.
Material Advantages:
Excellent barrier performance: in many production processes, it is very important to extend the shelf life and avoid environmental damage. The multilayer structure of polyethylene co-extruded sheet ensures that the material can provide excellent protection against oxygen, moisture and ultraviolet rays.
Durability and strength: the outer PE film itself has excellent performance, including flexibility, impact resistance and puncture resistance, which is very suitable for some demanding packaging.
Food safety: Because the sheet itself must be in direct contact with food when packaging fresh products, snacks and frozen foods, the materials used in the production of these products must strictly meet food safety standards.
Recyclable: PE is also a recyclable material, which is also a rare advantage. This production line is a more sustainable choice for enterprises seeking to achieve environmental protection goals.
Pharmaceutical Packaging: The high barrier properties of the sheets are particularly useful for pharmaceutical packaging, ensuring that sensitive drugs are protected from environmental contaminants. The material also meets the standards of the safety and sanitation industries.
Cosmetic Packaging: In the cosmetics industry, multi-layer PE barrier sheets stand out for their protective properties and are an excellent choice for packaging cosmetics, skin care products, and personal care products. They provide perfect protection and add aesthetics.
Electronic and industrial applications: Multi-layer PE barrier sheets perform well in industries such as electronics. In these industries, moistureproof and physical protection are the key to prevent products from being damaged during storage and transportation. These sheets can effectively reduce the problems caused by environmental factors such as dust and humidity.
Medical packaging: High barrier PE sheets can also be used to package medical instruments, diagnostic equipment and other medical products to ensure that they remain sterile and protected throughout their life cycle.
Summary:
DWELL’s high barrier PE multilayer co-extrusion sheet production line can efficiently produce multilayer PE sheets with excellent barrier properties. It mixes a variety of materials, which is an ideal choice for those applications that need moisture-proof, oxygen-proof and light-proof, and keep the flexibility and durability of PE. The production line is suitable for food, medicine, cosmetics, electronics and many other industries, which can ensure high-quality output and efficient production. DWELL is committed to providing high-performance solutions to help customers meet packaging needs while supporting sustainable development goals.
