PP Vacuum Forming Sheet Extrusion Line
Production Strength
Our customized high-speed PP thermoforming sheet extrusion line is high-precision and high-capacity automatic equipment developed for thin-gauge, wide-width PP thermoforming sheets. It stably produces 1.2m wide, 0.3mm thin PP sheets with a rated output of 450kg/h. The line meets processing requirements of food packaging, thermoformed products and other plastic auxiliary materials. It solves common pain points of traditional sheet machines such as poor precision for thin sheets, low capacity, large material waste and uneven winding. The whole production line adopts integrated automatic design. The full process from raw material plasticization, calendering forming, edge trimming, static removal & drying to automatic material storage and winding runs automatically with minimal manual operation. It supports long-term continuous stable mass production and is the preferred equipment for large-scale manufacturing of high-end ultra-thin PP thermoforming sheets.
Production Line Process Introduction
This PP sheet line adopts mature single-screw melt extrusion technology to form a closed-loop, high-efficiency automatic workflow. Raw materials are melted and plasticized fully by the high-precision single-screw extruder, then delivered to the sheet die after filtration and pressure stabilization for uniform melt extrusion. The molten web enters the high-precision three-roll calender to shape the ultra-thin sheet and guarantee uniform thickness and flat surface.
The formed sheet goes to the automatic edge trimming unit to standardize dimensions, with on-line edge scrap recycling for raw material reuse. Afterwards, the sheet passes through oil-coating anti-static unit and dryer to eliminate static adhesion and moisture deformation. Finally, the sheet is processed by traction system, material storage buffer and double-station winder. The whole process has smooth connection and precise speed matching, suitable for continuous high-speed production. The finished sheets feature uniform thickness, no defects and good machinability for subsequent thermoforming.
The full line is equipped with premium main machine and auxiliary units complying with high-end industry standards:
Main Extruder: 132kW main motor, fitted with 120/35 dedicated single screw optimized for PP material. It realizes sufficient plasticization and high melting efficiency to support high-capacity and high-quality sheet production.
Precision Pressure Stabilizing & Filtration System: Screen changer, pressure sensor and melt pump installed between extruder and die. It filters impurities in real time, monitors melt pressure and stabilizes melt flow to avoid impurities and unstable discharge.
High-precision Forming System: Special sheet extrusion die matched with high-accuracy three-roll calender. Precisely controls sheet width and thickness for stable production of 1.2m wide, 0.3mm ultra-thin sheets.
Edge Trimming & Recycling System: Double-station circular knife edge trimmer for precise edge cutting. Equipped with on-line scrap recycling system to reuse trimmed edges in real time.
Post-processing System: Integrated oil-coating anti-static device and dryer. It removes static electricity on sheet surface and eliminates moisture, preventing sheet adhesion and damp deformation after winding.
Intelligent Traction & Buffering System: Traction machine, height-adjustable traction unit and accumulator. Designed for high-speed production, the accumulator balances line speed to solve speed mismatch during station switching of double-station winder.
Finished Winding System: Double-station automatic winder to realize non-stop roll change and support 24h continuous production.
Processing flow:
Raw material→mixing→vacuum automatic loading→single screw extruder→mould→three calender unit→cutting edge machine→oiling unit→heating machine→haul-off machine→material accumlator→haul-off machine→double station winder
| Board Width |
Thickness |
Extruder Type |
Motor Power |
Capacity |
| 600mm |
0.2-2mm |
120/35 |
132kw |
350 kg/h |
| 720mm |
0.2-2mm |
130/35 |
200kw |
500 kg/h |
| 760mm |
0.2-2mm |
150/35 |
250kw |
700 kg/h |
Core Advantages of Equipment Configuration
High Output & Superior Plasticizing Quality: The 132kW high-power motor and optimized 120/35 single screw ensure full and uniform plasticization of PP material with no granules or bubbles. Stable capacity reaches 450kg/h, much higher than ordinary machines, greatly boosting benefits for mass production.
High Forming Precision & High Pass Rate: Melt pump and pressure sensor stabilize flow pressure together with high-precision three-roll calender. It accurately controls thickness tolerance of 0.3mm ultra-thin sheet, delivering flat 1.2m wide sheet that fully satisfies high-standard thermoforming processing.
Energy Saving & Low Material Loss: On-line edge scrap recycling reuses waste automatically without manual handling, cutting raw material cost. Integrated process reduces energy consumption.
Optimized Post-treatment for Better Sheet Performance: Combined oil-coating anti-static and drying process solves static and sticking problems of thin PP sheets. Finished sheets have clean flat surface for excellent thermoforming performance.
Intelligent Buffer for Uninterrupted Production: Accumulator plus height traction unit perfectly adapt to high-speed operation. It compensates speed difference during winder roll change, avoiding machine shutdown and sheet stretching deformation to raise productivity and yield.
High Automation & Lower Labor Cost: Automatic control through the whole line from extrusion, forming, trimming, anti-static drying to winding. Simple operation reduces labor cost and human error.
