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Description
1. Extrusion system
Single/twin screw extruder:
Responsible for heating and melting plastic particles and plasticizing them evenly.
The screw length-to-diameter ratio (L/D) is usually 28:1~33:1 to ensure uniform plasticization.
Heating method: electric heating + air cooling/water cooling temperature control.
Screen changer (melt filter):
Filter impurities in the melt to improve the quality of the sheet.
Manual/hydraulic automatic screen change to reduce downtime.
2. Die system
T-type hanger die (key component):
Ensure uniform distribution of the melt to avoid uneven thickness.
3. Calendering and shaping system
Three-roll calender:
Roller material: mirror chrome-plated steel to ensure a smooth surface of the sheet.
Adjust the roller distance (0.2mm~2mm) to control the thickness of the sheet.
4. Cooling and traction system
Cooling device: air cooling
Tractor: Use rubber rollers or silicone rollers to avoid scratching the surface of the sheet.
5. Winding/cutting system
Automatic winder (for film/sheet): tension control to prevent deformation of the coil.
Fixed-length cutter (for thick sheet/plate): hydraulic/pneumatic cutting, accuracy ±1mm.
6. Control system
PLC+touch screen:
Control temperature, speed, pressure and other parameters.
II. Application areas
1. Food packaging
Disposable lunch boxes (PP/PS sheets)
Blister trays (PET/APET sheets)
2. Medical and electronics
Medical packaging sheets (PETG, HIPS)
Anti-static trays for electronic products (PS)
Single/twin screw extruder:
Responsible for heating and melting plastic particles and plasticizing them evenly.
The screw length-to-diameter ratio (L/D) is usually 28:1~33:1 to ensure uniform plasticization.
Heating method: electric heating + air cooling/water cooling temperature control.
Screen changer (melt filter):
Filter impurities in the melt to improve the quality of the sheet.
Manual/hydraulic automatic screen change to reduce downtime.
2. Die system
T-type hanger die (key component):
Ensure uniform distribution of the melt to avoid uneven thickness.
3. Calendering and shaping system
Three-roll calender:
Roller material: mirror chrome-plated steel to ensure a smooth surface of the sheet.
Adjust the roller distance (0.2mm~2mm) to control the thickness of the sheet.
4. Cooling and traction system
Cooling device: air cooling
Tractor: Use rubber rollers or silicone rollers to avoid scratching the surface of the sheet.
5. Winding/cutting system
Automatic winder (for film/sheet): tension control to prevent deformation of the coil.
Fixed-length cutter (for thick sheet/plate): hydraulic/pneumatic cutting, accuracy ±1mm.
6. Control system
PLC+touch screen:
Control temperature, speed, pressure and other parameters.
II. Application areas
1. Food packaging
Disposable lunch boxes (PP/PS sheets)
Blister trays (PET/APET sheets)
2. Medical and electronics
Medical packaging sheets (PETG, HIPS)
Anti-static trays for electronic products (PS)
Related Products
Cutting machine
three-station positive and negative pressure integrated machine
Vacuum forming machine
cup thermoforming machine
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