Features of Batch Pre Expanders

• Batch Processing: Processes a specific quantity of polystyrene beads in each cycle, allowing for flexibility in production volumes.
• Steam Heating: Utilizes steam to heat the polystyrene beads, causing them to expand through the vaporization of blowing agents.
• Insulated Chamber: The expansion chamber is often well-insulated to maintain consistent temperature and pressure during the expansion process.
• Control Systems: Equipped with electronic controls to manage temperature, pressure, and processing time, ensuring uniform bead quality.
• User-Friendly Interface: Many modern machines come with digital displays for easy monitoring and adjustment of parameters.

Working Principle

• Loading: A specific quantity of raw polystyrene beads is loaded into the pre-expander’s chamber.
• Steam Injection: Steam is injected into the chamber, raising the temperature of the beads and activating the blowing agent within them.
• Expansion: The beads expand to multiple times their original size as the blowing agent vaporizes and creates gas. The softening of the beads allows them to fuse together during this process.
• Cooling: After the expansion is complete, the steam is removed, and the beads are allowed to cool, stabilizing their expanded form.
• Discharge: Once cooled, the expanded beads are discharged from the chamber, ready for further processing or molding.

Applications

• EPS Production: Used in the manufacturing of various EPS products, such as insulation panels, packaging materials, and construction components.
• Custom Shapes: Allows for the production of specific shapes and sizes of expanded beads to meet different application requirements.
• Small-Scale Operations: Ideal for businesses that need flexibility in production with lower output requirements compared to continuous systems.

Advantages of Batch Pre Expanders

• Flexibility: Suitable for manufacturers who require varying production runs without the need for continuous equipment.
• Quality Control: Allows for better monitoring and quality control of each batch, ensuring consistency.
• Lower Initial Cost: Generally, batch pre-expanders are more cost-effective for smaller operations compared to larger continuous systems.

Considerations

• Production Speed: Batch pre-expanders may have slower production rates compared to continuous systems, making them less suitable for high-volume manufacturing.
• Manual Handling: Some operations may require more manual intervention, such as loading and unloading, depending on the machine design.

NINGBO PINSHENG MACHINERY CO.,LTD.specializes in manufacturing EPS,EPP,ETPU machine and EPS Mould for nearly 10 years with integrating independent R&D,production, sales and service.Our Factory is located in Hangzhou, the fast developing district in China, and close to important ports such as Shanghai and Ningbo,the geographical position is superior, transportation and shipping are very convenient.
Pinsheng Company focus on the product's quality and technical innovation,with professional working team and strong processing capacity.Our service is efficientand professional, and the pre-sale, sale, after-sales service personnel are skilled,experienced, and timely response.