PE Twin Screw Extruder

This high-performance PE extruder is designed specifically for the high requirements of polyethylene processing. As a core equipment of a complete PE granulation production line, this model is widely used for raw material blending, masterbatch preparation, and post consumer plastic recycling. As a key link connecting the feeding system and the cutting unit, this twin screw extruder fully meets the unique rheological requirements of LDPE, LLDPE, HDPE and their blends with excellent dispersion and mixing ability, mild melting characteristics and high volumetric yield.

·High free volume design: The screw geometry structure is optimized for PE extrusion process, providing ample free volume to easily cope with feeding difficulties caused by low bulk density of recycled PE film, hard crushed materials, and masterbatch additives, avoiding bridging and feeding fluctuations.
·Accurate temperature control system: The segmented barrel is equipped with independent cast copper heaters and closed-loop water cooling to ensure precise and stable temperature in each process section, effectively preventing the risk of thermal degradation during the PE granulation process.
·Advanced screw configuration: Customizable combination of co rotating meshing screw elements, achieving good distribution and dispersion mixing. It can handle shear sensitive PE materials gently and efficiently disperse aggregates.
·High torque gearbox: Adopting high torque, oil cooled lubrication gearbox, supporting 24/7 continuous heavy-duty operation, providing stable power guarantee for high viscosity PE processing.
·Intelligent operation interface: Integrated PLC control system and HMI touch screen, can monitor key parameters such as melt temperature, melt pressure, screw speed in real time, ensuring high repeatability between batches.

Noted: Details depend on your requirements and need.

Unlike ordinary single screw or general-purpose plastic granulators, this dedicated PE twin screw extruder directly addresses the inherent difficulties in polyethylene processing. Conventional extruders often struggle to cope with the low friction coefficient and high melt expansion of PE, while this equipment adopts a dedicated screw configuration, significantly improving solid conveying capacity and volatilization efficiency.

Compared to extruders mainly made of hard plastics such as PVC and ABS, our PE extruder emphasizes "gentle mixing" to maximize the mechanical properties of polyethylene molecular chains while dispersing additives. For recycling enterprises, using this PE granulator can easily integrate efficient filtration systems and multi-stage exhaust devices, resulting in high purity and excellent bulk density of PE particles, and significantly improved downstream processing performance.

·Recycling of hard and soft plastics: Processing post consumer HDPE bottles, pipes, and LDPE/LLDPE film waste into high-quality PE particles.
·Preparation of masterbatch: High concentration color masterbatch and functional masterbatch production require extremely high dispersion uniformity.
·Mixing of pipes and profiles: directly providing mixing materials for HDPE water supply pipes, gas pipes, and corrugated pipe production lines.
·Wood plastic composite materials: Efficient mixing of wood powder fibers and PE resin, used for outdoor flooring, guardrails, and other products.

Nanjing Kelongwell Chemical Machinery Co., Ltd. is well aware that every production line has unique requirements. We offer comprehensive OEM/ODM solutions:
·Customized screw components: Based on the wear and corrosion properties of PE materials, materials such as nitriding steel, high-speed steel, or powder metallurgy are selected.
·Diversified feeding scheme: For crushed materials, film materials, powders or liquid additives, volumetric or weight loss feeding systems can be selected.
·Downstream equipment integration: We provide a complete set of customized solutions from mold surface cutting, water ring cutting to strip cutting, perfectly matching customers' cooling and drying processes.

Q1: What are the main advantages of your company's twin screw PE extruder in recycling PE compared to a single screw extruder?
A: The single screw extruder has a simple structure, but it often encounters feeding difficulties when processing low bulk density PE cleaning crushed materials, and has strict requirements for moisture content. Our parallel and co rotating twin screw extruder has the ability of forced feeding, strong mixing shear, and multi-stage exhaust design, which can directly process raw materials with a moisture content of 3% -5%, achieve more uniform melting, and significantly improve the filtration performance and mechanical retention rate of the final PE granulation product.

Q2: Can this equipment process HDPE (hard) and LDPE/LLDPE (soft) simultaneously without replacing the screw?
A: Sure. One major advantage of modular twin screw extruders is process flexibility. We offer universal screw combinations that can cover most PE viscosity ranges. If we pursue the highest efficiency, we will optimize the screw configuration based on the characteristics of your raw materials (hard/soft ratio, recycled material status) during the customization stage, ensuring sufficient shear when processing HDPE and avoiding over cutting and local overheating when processing LLDPE, thus achieving "one machine with multiple functions".

Q3: How to ensure that material thermal degradation does not occur during the PE extrusion process?
A: PE is sensitive to thermal oxidative degradation, especially when the residence time is too long or the temperature fluctuates. This PE extruder adopts a segmented barrel and independent PID temperature control, combined with a narrow residence time distribution of co rotating twin screw, to evenly heat the material without dead corners, ensuring the product quality and batch stability of PE particles.

Q4: What after-sales services does Nanjing Kelongwell Chemical Machinery Co., Ltd. provide?
A: We provide comprehensive services including installation guidance, on-site debugging, and operator training. At the same time, there is sufficient inventory of commonly used vulnerable parts (screws, barrels, gearbox accessories, etc.) for PE granulators to minimize production line downtime.

Q5: Can I use this PE extruder in conjunction with my existing pelletizer or filter system?

A: Absolutely possible. Our twin screw extruder adopts standardized flange interface and control system open protocol, which can provide a separate host for upgrading and renovating existing production lines, or provide a full turnkey solution. Engineers will accurately match the interface size, melt pipeline, and hydraulic screen changer of your existing plastic granulator to ensure seamless integration and stable operation.