PP/PE thick sheet production line
PE plate extruding machine
The extruder technology in the manufacture of precision extruders for mass production of high quality plastic sheet
The connection between motor and gear is direct, through an elastic joint, suitable for absorbing bumps and vibrations.
The extruder barrel is made by two-metal alloy: In the smaller models, is made by nitrided steel as standard, by two-metal alloy as optional, the gear, the barrel and the motor are installed in a single structure, solidly made of electro-welded pieces, special covers in stainless steel, easily removable, protect the heater cylinder zones.
The extruder motor is AC or DC, complete with motor-ventilator. The extruder motor is plasced under the barrel to reduce overall dimensions, while the motor drive. Variable speed and constant torque, is included in the general control panel of the extruder. The venting plant is made up of liquid ring, vacuum pump, flowmeter for pump protection, a water-reclaiming system can be optionally supplied, the flat die can be supplied either for sheet or for plate production, the available die widths ranges 700 to 4000mm, the thickness varies from 0.3mm to 8mm.
Before the flat die, a coextrusion block can be inserted, to connect one or more extruder.
The XD calenders are divided into 4 basic models, identified by the rolls diameter, the calender is made up of a base in thermowelded laminate and frame of thickly bolted laminate.
The main structure is made up of 3 cylinders on a vertical axis:
1. supper cylinder, calibrator and cooler, applied on mobile arms moved by pneumatic pistons
2. central cylinder, calibrator and cooler, applied on rigid arms
3. lower cylinder, calibrator and cooler, applied on mobile arms moved by pneumatic pistons
The cylinders are chromed and then mirror polished, before chroming they are coated by 3mm thickness special material, with hardness of 52-54 HRC...
Cylinders movement is by one or more AC motor, the transmission between gearbox and cylinders is by modular gears, toothed belts and epicyclical gearbox.
Winders for reels
Winders for reels up to Dia. 2000mm X Width 1200mm
Winders are equipped with a safety sheet storage, useful during the sheet cutting and re-starting phases.
