Features of the POK Sheet Extruder
POK material's high melting point and high crystallinity require targeted optimizations based on standard POK sheet extruders, primarily in terms of temperature control accuracy and plasticizing efficiency.
1. POK Sheet Extruder：High-precision temperature control, adapted to POK material characteristics
POK material has a melting point of approximately 220-230°C and is sensitive to temperature fluctuations. Multi-stage temperature control is required to ensure melt stability.
The barrel utilizes multiple independent heating and cooling systems, achieving a temperature control accuracy of ±1°C, preventing localized overheating and material degradation.
The die head (especially the coat-hanger die) utilizes a zoned heating design, achieving temperature control accuracy of ±0.5°C, ensuring uniform transverse sheet thickness.
Some high-end equipment is equipped with a melt temperature sensor, providing real-time feedback and temperature adjustment, further minimizing the impact of temperature fluctuations on the product.
2. POK Sheet Extruder：Efficient plasticizing and stable extrusion ensure continuous production
POK material has a high viscosity, requiring enhanced shearing and conveying capabilities. Therefore, the equipment features specialized optimizations in the screw and extrusion system. The screw utilizes specialized flight structures (such as barrier and separation screws) to enhance shear mixing of the POK melt, ensuring full plasticization of the raw material and reducing unmelted particles.
A high-precision melt metering pump is standard, precisely controlling melt output, enabling sheet thickness tolerances to be controlled to ≤±0.05mm and improving extrusion stability.
The screen changer utilizes a fast screen change design (such as hydraulic automatic screen changer) to minimize melt pressure fluctuations during screen changes, avoiding product scrap caused by screen changes and ensuring continuous production.
3. POK Sheet Extruder：Highly automated integration reduces operational barriers and costs.
Automated control reduces manual intervention, improving production efficiency and consistency.
| order number | name | quantity |
| 1. | Automatic feeding + drying system | 1 set |
| 2． | SJ-65 single screw extruder | 1 set |
| 3． | L-450 mold and hydraulic mesh changer | 1 set |
| 4． | L=600MM three roll calender | 1 set |
| 5． | Roll temperature control system | 1 set |
| 6． | Cooling tray, cutting edge | 1 set |
| 7． | hauling engine | 1 set |
| 8． | Duplex winding machine | 1 set |
| 9． | Complete electrical control system | 1 set |
| Screw material | 38CrMoAL, nitrided steel |
| Screw hardness | HV950 |
| Cylinder material | Tubing wear-resistant material, nitrided steel |
| Die hardness | HV 1050 |
| Screw diameter | 65 mm |
| draw ratio | 30/1 |
| Main motor power | 30KW |
| The total heating power of the host is increased | 24KW |
| Tubular heating method | Aluminum or ceramic casting |
| Temperature control method | Automatic temperature control, fan automatic cooling |
| Form of a network changer | Duplex plate type |
| Specifications of the network changer | HW-100 |
| Volume of hydraulic oil | 20L |
| Power of the hydraulic station | 2.2KW |
| Mold structure | Made by Oriental Star, with a hanger-type flow channel and T-shaped mold |
| Mold material | High quality mold steel |
| The chrome plating treatment is applied to the flow channel in the mold, and the minimum thickness of the chrome plating layer is 0.03-0.05mm | |
| Polished to mirror (cavity Ra 0.1um, lip Ra 0.05um) | |
| die width | Product width: 300MM for 450mm |
| Thickness of the product | 0.5-2mm |
| Roll diameter | 320mm |
| Effective width of roller | 600mm |
| Roller material | alloy steel |
| Roller structure | Made by Oriental Star, with special multi-flow channel design |
| axiality | ≤0.005mm |
| Roll surface smoothness | Ra≤0.016um |
| Roll hardness | HRC58-62 |
| Chroming thickness | 0.08mm |
| Transmission reducer | Gear reduction motor |
| transmission power | 3×1.5KW |
| Speed control | Invt or Wecron frequency converter |
| Three roller gap adjustment method | Turbine worm gear electric adjustment, safety emergency stop switch, synchronous speed control. |
| Three roller form | The slope |
| Three roller wall panels | Overall steel plate welding processing |
| Three roller centering roller bearing | Haoyou or Wafangdian |
| revolving joint | Sino-foreign joint venture |
| cooling medium | heat conduction oil |
| Temperature control range | Room temperature to 180℃ |
| Temperature control accuracy | ±1℃ |
| water pump | 2.2KW hot oil pump *3 units |
| heater power | 6kw * 3 sets |
| Box material | stainless steel |
| Water valve | Pneumatic angle seat valve |
| The installation position is on the side of the cooling bracket, which is easy to move and maintain. | |
| Length of the bracket | 4 meters |
| Pre-cooling roll | Three smooth steel rods with built-in water circulation. |
| Trough (non-powered) | High quality stainless steel roller |
| Cooling roller specifications | Φ75×600mm |
| specifications | Ф200×600mm |
| material quality | PU rubber covered roller |
| transmission | reduction box |
| power | 1×1.5Kw |
| control | Invt frequency conversion control |
| Clamping method | pneumatic |
| mode of speed regulation | It can be synchronized with the three rollers or independent |
| Roll control | Constant tension |
| Rolling form | Dual station gas inflation shaft |
| control | Automatic length counting |
| Roll diameter | 100-500mm |
| Paper tube core specification | 3-inch coat |
Address
No. 88 Shandong Road, Beiguan Industrial Park, Jiaozhou City, Qingdao, Shandong Province, China
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