Plastic Sheet Extrusion Machine

This plastic sheet extrusion production line is a high-precision manufacturing system designed specifically for the continuous production of high-quality thermoplastic sheets. Developed and manufactured by Nanjing Kelongwell Chemical Machinery Co., Ltd., positioned as a medium to large-scale production enterprise, it meets its stringent requirements for sheet flatness, dimensional stability, and optical performance. This production line converts raw polymer materials into hard or flexible sheets through plastic extrusion technology, which are widely used in packaging, construction, and industrial fields. While optimizing the plastic extrusion process, ensure low operating costs and high production capacity output.

·Efficient screw design: Adopting a barrier screw structure optimized for sheet extrusion, ensuring uniform melt, sufficient mixing, and stable melt pressure, avoiding shear overheating.
·Automatic lip adjustment: equipped with precision T-shaped die head and automatic fine adjustment lip technology, it can achieve micrometer level thickness tolerance control over the entire width range.
·Three roll calendering unit: vertical or oblique three roll calendering machine, with independent temperature control for each roll, coupled with precision gear driven roller gap adjustment, to ensure the surface smoothness of the sheet and minimize internal stress.
·Integrated control system: Siemens PLC central control, combined with touch screen human-machine interface, real-time monitoring of key parameters such as temperature curve, screw speed, traction synchronization of plastic sheet extruder.
·Energy saving design: High torque direct drive motor combined with ceramic heating ring can reduce energy consumption by more than 15% compared to traditional plastic extrusion equipment.

Noted: Details depend on your requirements and need.

Why choose this plastic sheet extruder? Unlike general equipment, this production line has the core advantage of modular and flexible design. Its sturdy body structure can effectively suppress vibration during high-speed sheet extrusion, ensuring thickness consistency even at high production capacity. In addition, the screw geometry is customized according to the customer's actual resin type (such as APET, CPET, or PP) to optimize the plastic extrusion process. We focus on "melt quality" - to ensure that the polymer leaving the die head has no gel point and even viscosity, which is the key watershed between high-end packaging sheet and ordinary sheet. The entire plastic extrusion production line can significantly reduce the scrap rate during start-up and production changes, directly increasing customer profit margins.

This plastic extrusion equipment has a wide range of applications, covering the following industries:
·Packaging industry: producing APET fruit boxes, PP yogurt cup forming sheets, PS vacuum formed packaging, etc.
·Construction field: PE waterproofing membrane, PC polycarbonate panel, ABS decorative panel, etc.
·Industry and Medical: Medical vacuum formed packaging (PETG), stationery sheets (PP), protective panels, etc.
·Green material: Biodegradable PLA sheet, used for environmentally friendly food packaging.

Nanjing Kelongwell Chemical Machinery Co., Ltd. is well aware that each plastic extrusion project has its unique requirements. We provide comprehensive OEM/ODM services:
·Customized screw design: For special resins with high filling and moisture absorption, optimize screw configuration to improve plasticization efficiency.
·Layout planning: Free factory layout plan provided to ensure seamless connection between the sheet extrusion production line and the customer's existing back-end equipment (slitting machines, rewinding machines, stackers, etc.).
·Turnkey project: From raw material processing system (dryer, feeder) to downstream thermoforming connection, we provide a complete turnkey solution for plastic extruders and can customize brand identification according to customer requirements.

Q1: What are the differences between this plastic sheet extrusion production line and a regular general-purpose plastic extruder?
A: The core difference lies in the distribution of the melt and the cooling method. Ordinary plastic extruders only complete melting, while our sheet extrusion production line has been specially optimized for melt uniformity and stress free shaping. We adopt a special screw design to achieve low-temperature melting and high uniformity, and combine it with the multi zone independent temperature control of the three roll calendering unit to effectively avoid warping and thickness deviation - which are common pain points in sheet production of general plastic extrusion equipment.

Q2: Can this extrusion equipment produce both hard and soft sheets simultaneously?
A: Okay. This plastic extrusion production line adopts a modular back-end configuration. By adjusting the roll gap and die lip structure of the three roll calender, it is possible to switch between producing hard sheets (such as ABS and PP for packaging) and soft sheets (such as PE for geomembranes) in a relatively short period of time, meeting diversified production needs.

Q3: How to ensure thickness uniformity during high-speed plastic extrusion process?
A: Thickness control is the key to sheet extrusion. Our system integrates automatic thickness measurement feedback control, real-time detection of sheet thickness distribution, and automatic adjustment of mold lip fine adjustment bolts to form a closed-loop control. In addition, with the high rigidity design of the plastic sheet extruder host, even at plastic extrusion speeds of up to 1200 kg/h, the thickness tolerance can be controlled within ± 2%.

Q4: Is the plastic sheet extruder suitable for recycled or moisture absorbing materials?
A: Absolutely possible. For industrial recycled materials (PIR) customers, we offer an optional high-efficiency vacuum exhaust system. For moisture absorbing resins such as PLA and PET, a large capacity dehumidification dryer can be integrated to ensure that there are no bubbles or hydrolysis degradation during the plastic extrusion process, ensuring the quality of the sheets.

Q5: What kind of after-sales service does Nanjing Kelongwell Chemical Machinery Co., Ltd. provide for this plastic extrusion equipment?
A: We provide comprehensive technical support, including installation guidance, operation training, and a 12-month warranty. At the same time, we also provide a remote diagnostic system to achieve real-time troubleshooting. Due to the fact that the entire plastic extrusion production line is independently manufactured by our company, we can ensure the rapid supply of spare parts such as screws, barrels, gearboxes, etc., minimizing customer downtime.