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China Plastic Sheet Extruder BC120-1000 for PP PE PS Roll - Reliable Factory Suppliers for Quality Machinery
Machine introduction
2. Sieve changer part
The Sieve changer adopts hydraulic double-station pulling type, model 180mm Sieve change port, heating power 6kw.
3. Melt metering pump part
- Pump body drive connection mode: cardan shaft connection drive.
- Pump body reducer: high strength hard tooth reducer, no noise.
- Pump body control mode: frequency conversion speed regulation, and equipped with melt pressure sensor display pressure.
- Closed-loop control system: by adjusting the pressure before the pump to automatically control the speed of the screw host, to achieve the melt pressure balance, greatly improve the stability of extrusion.
4. Die
- Die forming: T coat hanger type
- Effective width of die: 1000mm (single-side adjustable range 0-200mm)
- Die performance: Using 40Cr material after modulation, chrome plating, polishing and other processes, with smooth flow path, mold opening and closing uniform, smooth adjustment, low energy consumption
- Die heating power: 15kw (built-in stainless steel heating tube, five-zone temperature control)
5. Three-roll calender part
- Roller specification: φ350mm*500mm*500mm, length 1000mm
- Roller structure: three-layer structure, outer layer by intermediate frequency treatment, surface hardness HRC55-58
- Roller surface: chrome plated, coating thickness 0.07-0.10mm after calenzing, surface roughness Ra≤0.4μm
- Roller accuracy: radial runout ≤0.01mm, cylindricity < 0.01mm
- Roller cooling method: water or oil cooling medium, the internal cooling channel adopts spiral trend, good cooling effect, high sheet transparency
- Roller drive motor power: 4kw*3 (variable frequency speed regulation)
- The form of roller drive: three rollers with gear reducer transmission, hard tooth surface gear reducer synchronous transmission, using analog module control
- Roll pitch adjustment: worm gear pitch adjustment, screw skew block fine adjustment limit
- Longitudinal walking: electric walking positioning device, equipped with a reducer with a motor
6. Cooling and trimming device
- The cooling part is composed of one φ180mm*1000mm roller and seven φ80*1000mm aluminum alloy guide rollers
- The trimming device is equipped with two cutting knives
7. Traction winder
- Traction steel roller: φ180mm*1000mm, traction rubber roller φ180*1000mm, coated and polished
- Traction reducer and motor power: hard face helical gear reducer with chain drive, 3kw
- Opening and closing form: cylinder pneumatic control
- Winding method: double station winding, air expansion shaft winding sheet, torque motor tension control, can be flipped unloading coil
8. Control part
- Console control: movable man-machine interface, touch screen form
- Temperature control: PID control of temperature module
Working flow
Raw material particles / scraps
➔
Screw heating
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Die extrusion
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Three-roll forming
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Cool + trim
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Coil finished product
Technical parameter
| Parameter | Specification |
|---|---|
| Model | BC120-1000 |
| Applicable material | PP, PE, PS |
| Overall power | 220kw |
| Heating power | 110kw |
| Molding sheet thickness | 0.3-2.0 mm |
| Sheet thickness accuracy | +/- 0.015 mm or less |
| Effective width of sheet | ≤850mm |
| Work efficiency | 350kg/h |
| Machine weight | ≈10T |
| Machine size | 13 m * 1.5 m * 2.5 m |
| Power source | Three-phase four-wire, 380V, 50Hz |
| Screw diameter | 120mm |
| Screw length-diameter ratio | 35:1 |
| Main motor power | 110kw |
| Net changer size | 180mm |
| Melt metering pump model | 200cc (optional) |
| Melt metering pump motor power | 7.5kw (optional) |
| Effective width of die head | 1000mm |
| Effective width of three rolls | 1000mm |
| Three-roll diameter | Φ500*500*350mm |
| Roller motor drive power | 3.5kw*3 |
Applications
PLA, PVC, PET, PS, PP as raw materials, changing the mold at one machine to manufacturing lids, covers, trays, plates, boxes, food and medical trays, etc.
Structure diagram
| Code | Name | Code | Name |
|---|---|---|---|
| 1 | Winding part | 8 | Heating part |
| 2 | Traction part | 9 | Screen changer |
| 3 | Electric box control cabinet | 10 | Die head |
| 4 | Main motor | 11 | Three roll calender |
| 5 | Main reducer | 12 | Cooling rack |
| 6 | Feed hopper | 13 | Edge cutting knife |
| 7 | screw | 14 | Side material winding |
List
| Name | Quantity (Set) |
|---|---|
| Heat extrusion screw | One set |
| Hydraulic quick net changer | One set |
| T-hanger die head | One set |
| Three roll calender | Independent three-roll*One set |
| Cooling belt traction device | One set |
| Mold temperature machine | One set |
| Trimming device | One set |
| Scrap take-up device | One set |
| winder | Double Stations*One set |
| Electrical control cabinet | One set |
Frequently Asked Questions
What raw materials are compatible with this sheet extrusion machine?
This machine is highly versatile and works with PP, PE, PS, PLA, PVC, and PET raw materials to manufacture various packaging items like lids, covers, trays, and boxes.
What is the thickness range and accuracy of the produced sheets?
The machine can form sheets with a thickness range of 0.3 mm to 2.0 mm, maintaining an impressive thickness accuracy of +/- 0.015 mm or less.
How does the closed-loop control system improve production stability?
By monitoring the melt pressure before the pump, the closed-loop system automatically adjusts the screw host speed. This keeps the melt pressure balanced, leading to highly stable sheet extrusion.
What are the specifications and cooling methods of the three-roll calender?
The rollers feature a φ350mm*500mm*500mm specification and 1000mm length. They employ water or oil cooling via an internal spiral channel, ensuring optimal cooling and high sheet transparency.
How is the winding process managed?
Winding is done via a double-station winding system using air expansion shafts. The tension is automatically managed by a torque motor, allowing for efficient flipped unloading of finished coils.