Upvc Profile Extrusion Machine

This extrusion production line is specifically designed for the production of high-yield and high rigidity UPVC profiles. As a key equipment in the fields of construction and chemical engineering, it integrates advanced plastic extrusion technology to convert UPVC raw materials into high-strength, dimensionally stable sheets. Nanjing Kelongwell Chemical Machinery Co., Ltd. has achieved a perfect balance between UPVC plasticization uniformity and melt flow stability through this equipment, which is suitable for large-scale production scenarios with strict requirements for zero defect yield.

·High torque conical twin screw structure: using wear-resistant nitriding steel screws, the compression ratio is optimized specifically for the shear sensitivity of UPVC, ensuring complete melting and no thermal degradation during plastic extrusion process.
·Multi stage vacuum exhaust system: efficiently removes moisture, small molecule volatiles, and decomposed gases from UPVC formula, completely eliminates surface bubbles on the board, and ensures a dense and pore free board surface.
·Precision hanger type mold: equipped with a flexible lip adjustment device, the melt is evenly distributed horizontally, providing a slab foundation with strict thickness tolerance for UPVC profile extrusion.
·Three roll calender servo control: horizontal independent roller drive, closed-loop temperature control and gap precision adjustment system, accurately setting the mechanical properties and surface glossiness of UPVC profile.
·Intelligent PLC control system: The central HMI touch screen centrally monitors key parameters such as melt pressure, temperature in each zone, and screw speed, ensuring that the UPVC plastic extrusion process is repeatable and easy to operate.

Noted: Details depend on your requirements and need.

Why choose this UPVC profile extrusion solution? Traditional extrusion lines often struggle to cope with the complex rheological properties of UPVC, especially its narrow processing window and tendency towards degradation. Our system has been specially optimized for these pain points from the beginning of its design.

Unlike ordinary plastic extruders used for polyolefins, our parallel twin screw structure provides stronger convective melting and self-cleaning effects, ensuring that stabilizers, lubricants, and other additives are evenly dispersed, resulting in UPVC profiles with excellent impact resistance and weather resistance. At the same time, the overall cast frame structure significantly reduces vibration during high-speed production and extends the service life of the screw barrel, which is a common cause of failure in low-end plastic extrusion equipment.

This UPVC plastic extruder is widely used in the following scenarios:
·Construction industry: waterproof board, wall decoration board, hollow paving board, etc
·Chemical environmental protection: corrosion-resistant acid pickling tank, ventilation duct, fume hood
·Transportation: Truck and trailer lining panels require high rigidity
·Advertising label: High strength flat substrate, suitable for digital printing and screen printing

Nanjing Kelongwell Chemical Machinery Co., Ltd. provides complete OEM/ODM customization capabilities. We are well aware that there are differences in UPVC formulations for different regions and applications, therefore we provide:
·Optimization of screw configuration: Customize specialized screw combinations based on stable systems (lead salts, calcium zinc) and filling ratios
·Downstream equipment integration: Customize traction machines, flip tables, automatic stacking machines, etc. according to the specifications of the sheet metal
·Turnkey solution for the entire production line: from workshop layout design to operator training, ensure that your plastic extrusion production line is put into operation quickly

Q1: What is the essential difference between this UPVC profile extrusion production line and ordinary plastic extruders used for PP and PE?
A: Ordinary plastic extruders usually use universal screws, lacking the specific mixing ability and shear control required by UPVC. UPVC belongs to thermosensitive materials and must use specific compression ratios and lower shear rates to prevent decomposition. Our UPVC plastic extruder adopts a dedicated conical twin screw, optimizing the aspect ratio and temperature zoning to ensure uniform melt without producing black spots or yellowing, which is the core difficulty of UPVC profile extrusion.

Q2: How to ensure the flatness and surface quality of UPVC profile?
A: The flatness and surface gloss mainly depend on the shaping and cooling process. We use a three roll calender, with each roll independently servo driven and precision gap control to effectively eliminate internal stress and warping. The independent control of roller temperature can achieve flexible switching between high gloss or matte surfaces on the same production line, meeting the differentiated requirements of different applications for the surface effect of UPVC profiles.

Q3: Can the equipment use recycled UPVC raw materials?
A: Sure. The twin screw structure of this plastic extruder has strong mixing ability and allows for the addition of UPVC recycled materials in a certain proportion. But to ensure the mechanical properties and surface quality of the final board, we usually recommend a separate feeding system and melt filtration device to remove impurities. For high filling or fully recycled material formulas, we can customize specialized screw configurations.

Q4: What is the maintenance cycle for the screw barrel?
A: The lifespan of plastic extrusion equipment is closely related to the processing materials. Our screws are made of high-quality nitriding steel (bimetallic is optional for strong corrosion formulations), and it is recommended to conduct wear testing every 12-18 months under normal use. Due to the effective reduction of metal contact during operation by the screw structure design, compared to single screw UPVC extruders, its wear rate is significantly reduced, and its long-term comprehensive cost is more advantageous.

Q5: Can Nanjing Kelongwell Chemical Machinery Co., Ltd. provide a complete production line and auxiliary equipment?
A: Absolutely possible. We provide a turnkey solution for UPVC profile extrusion line, which includes not only the plastic extruder host, but also a complete set of downstream equipment such as high-speed mixer, cooling mixer, automatic feeding system, sheet mold, three roll calender, traction machine, cutting machine, automatic stacking robot, etc. All devices are linked through a unified control system to ensure stable and efficient operation of the entire line.