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Jwell PET/PLA co-rotation twin-screw sheet extrusion line is a specialized manufacturing setup designed to produce sheets from polyethylene terephthalate (PET) and polylactic acid (PLA). These materials are chosen for their excellent properties and environmental benefits, with PET being widely used in packaging and PLA being a biodegradable alternative. The co-rotating twin-screw extruder allows for efficient mixing and processing of these polymers, producing high-quality sheets for various applications.
1. Raw Material Feeding System:
- Hoppers and Feeders: Raw materials, including PET or PLA pellets and any necessary additives, are fed into the extruder through hoppers. Gravimetric or volumetric feeders ensure precise control over the material feed rates.
- Dryers: PET and PLA are hygroscopic and must be thoroughly dried before processing to prevent hydrolytic degradation during extrusion.
2. Co-rotating Twin-Screw Extruder:
- Twin-Screw Configuration: The co-rotating twin-screw extruder features two intermeshing screws that rotate in the same direction. This design provides excellent mixing, homogenization, and devolatilization capabilities, which are critical for producing high-quality sheets.
- Temperature Control: Multiple heating zones along the extruder barrel allow precise control of the temperature profile, ensuring optimal melting and processing conditions for PET and PLA.
- Degassing/Venting: The extruder typically includes venting ports to remove any volatiles or moisture from the melt, improving the quality of the final sheet.
3. Extrusion Die:
- Flat Sheet Die: The homogeneously mixed and melted polymer exits the extruder through a flat sheet die. The die shapes the polymer melt into a flat sheet with the desired width and thickness.
- Die Lip Adjustment: Fine adjustments to the die lips ensure uniform thickness across the sheet width.
4. Calendering System:
- Calender Rolls: The extruded sheet is passed through a series of calender rolls, typically three, which control the sheet thickness and surface finish. These rolls are temperature-controlled to ensure proper cooling and to impart the desired surface texture.
- Embossing Rolls: If a textured surface is required, embossing rolls can be used during the calendering process.
5. Cooling System:
- Cooling Rollers: After calendering, the sheet passes through additional cooling rollers to further solidify and stabilize it.
- Air Cooling or Water Bath: Additional cooling methods may be employed depending on the specific requirements of the sheet.
6. Thickness Measurement and Control:
- Online Thickness Gauges: Non-contact measurement systems continuously monitor the sheet thickness, providing real-time feedback to adjust the extrusion parameters and ensure consistent quality.
7. Edge Trimming and Scrap Reclaim:
- Trimming Knives: The edges of the extruded sheet are trimmed to the desired width, removing any uneven or excess material.
- Reclaim System: Trimmed edges and off-spec material can be recycled back into the extrusion process, reducing waste and improving material utilization.
8. Winding and Cutting:
- Automatic Winders: The finished sheet is wound into rolls for easy handling, storage, and transportation. Tension control systems ensure the sheet is wound without wrinkles or deformation.
- Cutting Systems: For producing sheets of specific sizes, cutting systems like guillotine cutters or slitting machines are used.
- Excellent Mixing and Homogenization: The co-rotating twin-screw design ensures thorough mixing and homogenization of the polymer melt, resulting in high-quality sheets.
- Flexibility: The system can process both PET and PLA, offering versatility for different applications and market demands.
- Enhanced Properties: Sheets produced from PET offer excellent clarity, strength, and barrier properties, while PLA sheets provide biodegradability and environmental benefits.
- Consistency and Quality Control: Advanced control systems ensure consistent sheet thickness and quality throughout the production process.
- Packaging: PET and PLA sheets are widely used in packaging applications, including food containers, clamshells, and blister packs.
- Disposable Products: PLA sheets are particularly suitable for disposable items like cups, plates, and cutlery due to their biodegradable nature.
- Medical and Pharmaceutical: Both PET and PLA sheets are used in medical packaging and devices, benefiting from their clarity and biocompatibility (in the case of PLA).
- Automotive and Electronics: PET sheets are used in various automotive and electronic applications for their durability and high-performance characteristics.
Jwell PET/PLA co-rotation twin-screw sheet extrusion line is essential for producing high-quality, versatile, and environmentally friendly sheets for a wide range of applications, combining efficiency, consistency, and advanced material properties.
| Model | Exreuder Model | Products Thickness(mm) | Main Motor Power(kw) | Max. Capacity(kg/h) |
| Multi Layer | JWE75/40+JWE52/40-1000 | 0.15-1.5 | 132/15 | 500-600 |
| Single Layer | JWE75/40-1000 | 0.15-1.5 | 160 | 450-550 |
| Highly-efficient | JWE95/44+JWE65/44-1500 | 0.15-1.5 | 250/75 | 1000-1200 |
| Highly-efficient | JWE110+JWE65-1500 | 0.15-1.5 | 355/75 | 1000-1500 |
| Note: The specifications are subject to change without prior notice. | ||||
Jwell PET/PLA co-rotation twin-screw sheet extrusion line is a specialized manufacturing setup designed to produce sheets from polyethylene terephthalate (PET) and polylactic acid (PLA). These materials are chosen for their excellent properties and environmental benefits, with PET being widely used in packaging and PLA being a biodegradable alternative. The co-rotating twin-screw extruder allows for efficient mixing and processing of these polymers, producing high-quality sheets for various applications.
1. Raw Material Feeding System:
- Hoppers and Feeders: Raw materials, including PET or PLA pellets and any necessary additives, are fed into the extruder through hoppers. Gravimetric or volumetric feeders ensure precise control over the material feed rates.
- Dryers: PET and PLA are hygroscopic and must be thoroughly dried before processing to prevent hydrolytic degradation during extrusion.
2. Co-rotating Twin-Screw Extruder:
- Twin-Screw Configuration: The co-rotating twin-screw extruder features two intermeshing screws that rotate in the same direction. This design provides excellent mixing, homogenization, and devolatilization capabilities, which are critical for producing high-quality sheets.
- Temperature Control: Multiple heating zones along the extruder barrel allow precise control of the temperature profile, ensuring optimal melting and processing conditions for PET and PLA.
- Degassing/Venting: The extruder typically includes venting ports to remove any volatiles or moisture from the melt, improving the quality of the final sheet.
3. Extrusion Die:
- Flat Sheet Die: The homogeneously mixed and melted polymer exits the extruder through a flat sheet die. The die shapes the polymer melt into a flat sheet with the desired width and thickness.
- Die Lip Adjustment: Fine adjustments to the die lips ensure uniform thickness across the sheet width.
4. Calendering System:
- Calender Rolls: The extruded sheet is passed through a series of calender rolls, typically three, which control the sheet thickness and surface finish. These rolls are temperature-controlled to ensure proper cooling and to impart the desired surface texture.
- Embossing Rolls: If a textured surface is required, embossing rolls can be used during the calendering process.
5. Cooling System:
- Cooling Rollers: After calendering, the sheet passes through additional cooling rollers to further solidify and stabilize it.
- Air Cooling or Water Bath: Additional cooling methods may be employed depending on the specific requirements of the sheet.
6. Thickness Measurement and Control:
- Online Thickness Gauges: Non-contact measurement systems continuously monitor the sheet thickness, providing real-time feedback to adjust the extrusion parameters and ensure consistent quality.
7. Edge Trimming and Scrap Reclaim:
- Trimming Knives: The edges of the extruded sheet are trimmed to the desired width, removing any uneven or excess material.
- Reclaim System: Trimmed edges and off-spec material can be recycled back into the extrusion process, reducing waste and improving material utilization.
8. Winding and Cutting:
- Automatic Winders: The finished sheet is wound into rolls for easy handling, storage, and transportation. Tension control systems ensure the sheet is wound without wrinkles or deformation.
- Cutting Systems: For producing sheets of specific sizes, cutting systems like guillotine cutters or slitting machines are used.
- Excellent Mixing and Homogenization: The co-rotating twin-screw design ensures thorough mixing and homogenization of the polymer melt, resulting in high-quality sheets.
- Flexibility: The system can process both PET and PLA, offering versatility for different applications and market demands.
- Enhanced Properties: Sheets produced from PET offer excellent clarity, strength, and barrier properties, while PLA sheets provide biodegradability and environmental benefits.
- Consistency and Quality Control: Advanced control systems ensure consistent sheet thickness and quality throughout the production process.
- Packaging: PET and PLA sheets are widely used in packaging applications, including food containers, clamshells, and blister packs.
- Disposable Products: PLA sheets are particularly suitable for disposable items like cups, plates, and cutlery due to their biodegradable nature.
- Medical and Pharmaceutical: Both PET and PLA sheets are used in medical packaging and devices, benefiting from their clarity and biocompatibility (in the case of PLA).
- Automotive and Electronics: PET sheets are used in various automotive and electronic applications for their durability and high-performance characteristics.
Jwell PET/PLA co-rotation twin-screw sheet extrusion line is essential for producing high-quality, versatile, and environmentally friendly sheets for a wide range of applications, combining efficiency, consistency, and advanced material properties.
| Model | Exreuder Model | Products Thickness(mm) | Main Motor Power(kw) | Max. Capacity(kg/h) |
| Multi Layer | JWE75/40+JWE52/40-1000 | 0.15-1.5 | 132/15 | 500-600 |
| Single Layer | JWE75/40-1000 | 0.15-1.5 | 160 | 450-550 |
| Highly-efficient | JWE95/44+JWE65/44-1500 | 0.15-1.5 | 250/75 | 1000-1200 |
| Highly-efficient | JWE110+JWE65-1500 | 0.15-1.5 | 355/75 | 1000-1500 |
| Note: The specifications are subject to change without prior notice. | ||||
