Twin Screw PVC Extrusion Line
Your Professional Twin Screw PVC Extrusion Line Supplier
Established in 2020 as part of East Prospects Int'l Trading Group (referred to as East Prospects), Ningbo DW Plastics Machinery Co., Ltd. (referred to as DW Machinery) specializes in the production of various precision components and the trading of machinery within this industry. Its main product and service offerings include bimetallic, nitrided, or chrome-plated screw barrel sets; tie bars, column shafts, nuts, and pistons; heater bands and couplings; gearboxes (as a sales agent); new and used injection molding machines (as a sales agent); and new and used extrusion machines (as a sales agent).
Why Choose us
R&D Strength
DW Machinery possesses robust research and development capabilities, independently conducting product development, design, and innovation. The company has obtained multiple product patents.
Quality Control
In terms of quality control, as an ISO 9001 certified enterprise, DW Machinery continuously enhances its quality management system by implementing precise inspections at every stage of the production process.
Advanced Production Equipment
DW Machinery is also equipped with a comprehensive range of advanced manufacturing equipment, including a CNC Machining Center, CNC Turning Machine, Inner Hole Grinding Machine, 13-Meter Deep Hole Boring Machine, NC Drilling Machine, Computer-Controlled Nitriding Furnace System, Centrifugal Casting Furnace, PTA Bimetallic Spraying Equipment, Gear Milling Machine, and more.
Parameter
|
Model |
Max. width (mm) |
Extruder |
Max. capacity (kg/h) |
Main motor (kw) |
|
YF-180 |
180 |
SJZ51/105 or SJZ55/110 |
80-120/120-150 |
18.5/22 |
|
YF-240 |
240 |
SJZ65/132 |
175-250 |
37 |
|
YF-300 |
300 |
SJZ65/132 |
175-250 |
37 |
|
YF-400 |
400 |
SJZ80/156 |
250-350 |
55 |
|
YF-600 |
600 |
SJZ80/156 |
250-350 |
55 |
|
YF-800 |
800 |
SJZ92/188 |
280-350 |
55 |
|
YF-1200 |
1200 |
SJZ80/156 or SJZ92/188 |
300-350/600-700 |
75/110 |
Benefits of Twin Screw PVC Extrusion Line
Enhanced Mixing Capability
The primary advantages of a twin screw PVC extrusion line is its superior mixing capability. The presence of two intermeshing screws creates a highly efficient and controlled mixing environment. This allows for better dispersion of additives, such as stabilizers, lubricants, and colorants, throughout the PVC melt. As a result, the final product exhibits improved homogeneity and consistent quality.
Improved Process Efficiency
Twin-screw extruders enable higher production rates and improved process efficiency compared to single-screw extruders. The twin-screw configuration provides better conveying and melting of PVC materials, ensuring a smoother and more stable extrusion process. This results in reduced material wastage, shorter production cycles, and increased overall productivity.
Enhanced Quality Control
The precise control and uniformity offered by twin screw PVC extrusion line contribute to enhanced quality control. Manufacturers can achieve tight tolerances and consistent dimensions across their PVC profiles, ensuring compliance with industry standards and customer requirements. The advanced control systems of twin-screw extruders allow for real-time adjustments, minimizing variations and improving product consistency.
Greater Versatility and Flexibility
Twin-screw extruders offer greater versatility and flexibility in the PVC profile extrusion process. The ability to fine-tune various process parameters, such as screw speed, temperature, and shear rate, enables manufacturers to cater to a wide range of PVC formulations and product specifications. From rigid profiles to foam profiles, twin-screw extruders can handle diverse production requirements with ease.
Energy Efficiency and Cost Savings
Contrary to common assumptions, twin screw PVC extrusion line can offer significant energy savings compared to single-screw extruders. The efficient mixing and melting capabilities of twin-screw extruders result in reduced processing temperatures and shorter residence times. This translates into lower energy consumption, reduced cooling requirements, and ultimately, cost savings for manufacturers.
Reduced Maintenance and Downtime
Twin screw PVC extrusion lines are designed for durability and ease of maintenance. The robust construction and advanced self-cleaning features of twin-screw extruders minimize material buildup and reduce the frequency of cleaning and maintenance operations. This results in less downtime and improved production efficiency.
The Working Principle Of The Twin Screw PVC Extrusion Line
Step1: Material Intake
The twin-screw extruder adopts forced feeding method. For example, as soon as PVC material enters the extruder, it is subjected to strong shearing, stirring and calendering when passing through the radial gap between the two screws.
Step2: Material Conveyance
Non-intermeshing twin-screw extruders cannot form a closed or semi-closed cavity and have no positive displacement transportation conditions. The material conveyance mechanism is similar to that of a single-screw extruder.
Step3: Melting and Mixing
As the material progresses through the barrel, it undergoes a remarkable transformation due to the increasing temperature and pressure. The dynamic movement of the rotating screws, combined with the heating elements integrated into the barrel, gradually elevates the material’s temperature, leading to its melting. This controlled melting process plays a pivotal role in achieving the desired molecular structure and guaranteeing the utmost quality of the final product.
Step4: Venting and Degassing(Optional)
Some advanced twin-screw extruders have a venting section to eliminate volatile components and gases released during the melting and mixing process. This ensures a purer and higher-quality final product.
In certain plastic modification applications, a degassing section can be included in the extruder to remove any residual gases or volatile substances from the molten material. This ensures superior product stability and reduces the risk of unwanted reactions or degradation.
Step5: Die and Cooling
The material passes through a meticulously crafted die after leaving the extruder barrel. This die molds the material into the desired shape, whether it be continuous strands for granulation or a specific profile for modifying the plastic. The choice of die configuration is crucial as it determines the outcome of the extrusion process. After emerging from the die, using air or water rapidly solidifies the plastic. This cooling step preserves the shape and prevents distortion.
Step6: Cutting and Collection
Following the cooling phase, the solidified plastic may undergo further processing, particularly in plastic modification applications. At this stage, precision becomes paramount. The cured plastic undergoes a cutting process, usually performed by specialized equipment such as a granulator, to ensure uniformity in the size of the resulting chip s or granules. The choice between cutting into smaller pieces or pelletizing depends on the specific requirements of the application. These processed materials are then collected for further use in downstream manufacturing processes.
Logistics
We will help you to choose the best shipping way according to your detail requirements. By sea, by air, or by express, etc.
| The time frame of an order delivery is divided into two parts: | Processing time: 7-14 Days Shipping time: 20~30 Days |
| Shipping methods: | DDP, DAP, EXW, etc. |
| Shipping fee: | The shipping fee will be changed according to every pacel's weight. |