800 tray/h Automatic PP PET Seedling Tray Sheet Extruder

Seedling Tray Sheet Extruder Product Introduction 

The 800 tray/h automatic PP PET seedling tray sheet extruder is engineered for high-volume, continuous production of durable and uniform seedling trays. It integrates a precision single-screw extruder, advanced flat die, and water-cooled calibration system to ensure accurate thickness and smooth surface. PLC-controlled parameters allow precise adjustment of temperature, screw speed, and extrusion conditions for consistent output. The machine is widely used in agricultural nurseries, horticulture farms, and greenhouse operations, providing reliable seedling trays for vegetables, flowers, and other crops.

Working Principle：

Raw PP or PET plastic granules are fed into the hopper and melted by a high-torque single-screw extruder. The molten sheet is pushed through a precision flat die, then passes over water-cooled calibration rollers to achieve uniform thickness and smooth surface. The sheet is cut or formed into trays automatically. PLC controls all parameters including screw speed, temperature, and roller speed for consistent, high-quality output.

Technical Specifications：

Processing Type	Vacuum Forming
Production Speed	17 Cycles/Min
Power	22 kW
Voltage	380 V
Key Selling Points	High Productivity
Dimension (L×W×H)	3600×980×1800 mm
Forming Width	350 mm
Forming Length	540 mm
Max Forming Height	100 mm
Sheet Thickness	0.1–0.9 mm
Heating Power	22 kW
Air Pressure	0.4 MPa
Air Consumption	100 L/Min
Water Consumption	100 L/Min
Weight	2000 kg
Temperature Range	0–250 °C
Roller Diameter	150 mm
Control System	PLC Touchscreen
Material Feed	Manual / Automatic Optional

Main features：

• High Production Efficiency: Capable of producing 800 trays per hour, ensuring continuous, large-scale operation.
• Precision Extrusion: Single-screw extruder with advanced flat die ensures uniform tray thickness and smooth surface.
• Automated Control System: PLC system monitors and adjusts screw speed, temperature, and roller speed for consistent quality.
• Material Versatility: Processes PP and PET granules, producing durable, reusable, and high-strength trays.
• Energy-Efficient Design: Water-cooled calibration rollers and optimized extrusion system minimize energy consumption.

Application Scenarios：

• Agricultural Nurseries: Efficient production of vegetable, flower, and herb seedling trays.
• Greenhouses: Produces uniform trays for greenhouse seedling propagation and transplantation.
• Horticulture Farms: Supports large-scale horticultural operations requiring consistent tray quality.
• Plant Propagation Centers: Ideal for producing seedling trays for research or commercial propagation.
• Urban Farming and Vertical Farms: Suitable for small- to large-scale urban agriculture applications.

FAQ

• Q: What materials can this extruder process?
  A: PP and PET plastic granules.
• Q: What is the maximum production capacity?
  A: 800 trays per hour.
• Q: Is the machine fully automatic?
  A: Yes, it includes automatic feeding, extrusion, and forming.
• Q: Can tray thickness and size be adjusted?
  A: Yes, PLC and die settings allow precise adjustment.
• Q: Where is this machine commonly used?
  A: In nurseries, horticulture farms, greenhouses, and seedling propagation facilities.

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