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China Suppliers Plastic Sheet Extruder for PP PE PS Roll BC120-1000 - High Efficiency Factory Equipment
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
➔
Die extrusion
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Three-roll forming
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Cool + trim
➔
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 (FAQ)
Q1: Which plastic raw materials can this extrusion line process?
A1: This machine is highly versatile and compatible with PP, PE, PS, PLA, PVC, and PET raw materials. You can easily switch production by changing the mold.
Q2: What is the maximum production capacity and thickness range?
A2: The machine features a high work efficiency of 350kg/h. It can produce plastic sheets with a thickness ranging from 0.3 mm to 2.0 mm, keeping the thickness accuracy within +/- 0.015 mm.
Q3: How does the melt metering pump improve sheet quality?
A3: The melt metering pump utilizes a closed-loop control system. By adjusting the pressure before the pump, it automatically controls the screw host speed to achieve melt pressure balance, ensuring uniform and stable extrusion.
Q4: What are the specifications and cooling methods of the three-roll calender?
A4: The three-roller calender has a roller size of φ350mm*500mm*500mm with a length of 1000mm. It utilizes water or oil cooling media flowing through spiral internal channels to achieve excellent cooling efficiency and high sheet transparency.
Q5: What kind of finished products can be manufactured with this sheet extrusion machine?
A5: It is widely used to manufacture disposable lids, covers, trays, plates, boxes, food containers, and medical trays when integrated with thermoforming systems.
Q6: How does the winding system work?
A6: The machine is equipped with a double-station winding system featuring air expansion shafts. It utilizes torque motor tension control and supports flipping to easily unload finished sheet coils.