 |
| Quantity: | |
|---|---|
Jwell multilayer barrier sheet extrusion line is a sophisticated production system used in the plastics industry to create multilayer sheets with barrier properties. These sheets are commonly used in packaging applications, such as food packaging, where they provide protection against moisture, oxygen, and other external factors to preserve the contents.
1. Raw Material Feeding System:
- Hoppers and Feeders: Raw materials, including various polymers and additives, are fed into the extruders through hoppers and feeders. These materials can include polyethylene (PE), polypropylene (PP), ethylene vinyl alcohol (EVOH), polyamide (PA), and adhesives.
- Gravimetric or Volumetric Feeders: Ensure precise control over the material feed rates to maintain the correct layer proportions.
2. Extruders:
- Single or Twin-Screw Extruders: Multiple extruders are used to melt and mix the different polymer resins. Each extruder corresponds to a specific layer of the final multilayer sheet.
- Temperature Control: Each extruder has zones with controlled heating to ensure the polymers reach the correct viscosity for extrusion.
3. Co-Extrusion Feedblock:
- Feedblock Design: The melted polymers from the extruders are combined in a feedblock, which arranges the polymers into the desired layer structure.
- Distribution and Layer Sequence: The feedblock ensures the polymers are distributed evenly and form distinct layers without intermixing.
4. Die Head:
- Flat Die or Sheet Die: The combined polymer melt exits the feedblock and enters the die head, which shapes it into a flat sheet. The design of the die ensures uniform thickness across the sheet.
5. Cooling System:
- Chill Roll Stack: The extruded sheet is cooled and solidified by passing through a series of chill rolls. The rolls are precisely controlled in terms of temperature and pressure to ensure even cooling and smooth surface finish.
- Quenching: In some systems, additional quenching methods (e.g., water bath) may be used for rapid cooling.
6. Thickness Measurement and Control:
- Gauge Control**: Online thickness measurement systems continuously monitor the sheet thickness and adjust the extrusion parameters in real-time to maintain consistent quality.
7. Edge Trimming and Scrap Reclaim:
- Trimming Knives: Edges of the extruded sheet are trimmed to achieve the desired width.
- Reclaim System: Trimmed edges and any off-spec material can be recycled back into the process, reducing waste.
8. Winding and Cutting:
- Winders: The finished sheet is wound into rolls for easy handling and further processing.
- Cutting Systems: Depending on the application, the sheet can be cut into smaller sizes or shapes using various cutting systems (e.g., guillotine cutters, slitting machines).
1. The test data of the manufactured coil products are better than the standard;
2. The average value of product thickness, thickness control can be adjusted;
3. The production line has high output, high efficiency and low energy;
4. Coiled products are neatly rolled and tight, and the overall sales of the product are good;
5. After the finished coil is unrolled and rolled out, there is no lotus leaf or bulge;
6. The production line has a high degree of automation, and it is easy to manage with fewer people;
7. High-quality seamless steel pipe or forging cylinder processing roller surface;
8. High-quality forged steel processing flange shaft head;
9. Multi-pass heat treatment;
10. Strict material and heat treatment testing process can provide material quality report.
11. Enhanced Barrier Properties: By combining different polymers, multilayer sheets can offer superior barrier properties against gases, moisture, and UV light.
12. Cost Efficiency: Using less expensive polymers in combination with high-performance barrier materials can reduce costs.
13. Customization: The process allows for customization of layer compositions and thicknesses to meet specific application requirements.
14. Recyclability: Some multilayer systems
Jwell multilayer barrier sheet extrusion line is a sophisticated production system used in the plastics industry to create multilayer sheets with barrier properties. These sheets are commonly used in packaging applications, such as food packaging, where they provide protection against moisture, oxygen, and other external factors to preserve the contents.
1. Raw Material Feeding System:
- Hoppers and Feeders: Raw materials, including various polymers and additives, are fed into the extruders through hoppers and feeders. These materials can include polyethylene (PE), polypropylene (PP), ethylene vinyl alcohol (EVOH), polyamide (PA), and adhesives.
- Gravimetric or Volumetric Feeders: Ensure precise control over the material feed rates to maintain the correct layer proportions.
2. Extruders:
- Single or Twin-Screw Extruders: Multiple extruders are used to melt and mix the different polymer resins. Each extruder corresponds to a specific layer of the final multilayer sheet.
- Temperature Control: Each extruder has zones with controlled heating to ensure the polymers reach the correct viscosity for extrusion.
3. Co-Extrusion Feedblock:
- Feedblock Design: The melted polymers from the extruders are combined in a feedblock, which arranges the polymers into the desired layer structure.
- Distribution and Layer Sequence: The feedblock ensures the polymers are distributed evenly and form distinct layers without intermixing.
4. Die Head:
- Flat Die or Sheet Die: The combined polymer melt exits the feedblock and enters the die head, which shapes it into a flat sheet. The design of the die ensures uniform thickness across the sheet.
5. Cooling System:
- Chill Roll Stack: The extruded sheet is cooled and solidified by passing through a series of chill rolls. The rolls are precisely controlled in terms of temperature and pressure to ensure even cooling and smooth surface finish.
- Quenching: In some systems, additional quenching methods (e.g., water bath) may be used for rapid cooling.
6. Thickness Measurement and Control:
- Gauge Control**: Online thickness measurement systems continuously monitor the sheet thickness and adjust the extrusion parameters in real-time to maintain consistent quality.
7. Edge Trimming and Scrap Reclaim:
- Trimming Knives: Edges of the extruded sheet are trimmed to achieve the desired width.
- Reclaim System: Trimmed edges and any off-spec material can be recycled back into the process, reducing waste.
8. Winding and Cutting:
- Winders: The finished sheet is wound into rolls for easy handling and further processing.
- Cutting Systems: Depending on the application, the sheet can be cut into smaller sizes or shapes using various cutting systems (e.g., guillotine cutters, slitting machines).
1. The test data of the manufactured coil products are better than the standard;
2. The average value of product thickness, thickness control can be adjusted;
3. The production line has high output, high efficiency and low energy;
4. Coiled products are neatly rolled and tight, and the overall sales of the product are good;
5. After the finished coil is unrolled and rolled out, there is no lotus leaf or bulge;
6. The production line has a high degree of automation, and it is easy to manage with fewer people;
7. High-quality seamless steel pipe or forging cylinder processing roller surface;
8. High-quality forged steel processing flange shaft head;
9. Multi-pass heat treatment;
10. Strict material and heat treatment testing process can provide material quality report.
11. Enhanced Barrier Properties: By combining different polymers, multilayer sheets can offer superior barrier properties against gases, moisture, and UV light.
12. Cost Efficiency: Using less expensive polymers in combination with high-performance barrier materials can reduce costs.
13. Customization: The process allows for customization of layer compositions and thicknesses to meet specific application requirements.
14. Recyclability: Some multilayer systems
