EN
- Overview
- Recommended Products
1. With the use of PLC Controller (Programmable Logic Controller), Touch Screen, man-machine conversation will be realized. Automatic Negative Pressure Feeder, Precision Electronic Weighing Scale and Feeding Level Switch make the automatic feeding and precise measuring come true. With the use of Automatic Control Device for temperature and pressure inside the drum, and the Automatic Photoelectric Level Control Device, uniformity of the density and light-weight of the foaming beads will be to realized; using the vibration sieve, crushing the lumps of EPS raw material, and Blower Fan and Conveyor to accomplish the first loop of automation of foaming of the EPS beads;
2. We imported Steam-Reducing Valve and the advanced German-made Proportioning Valve (optional) to precisely control the steam pressure and temperature, so that the pressure is throughout stable, ensuring that the interior temperature tolerance of the drum is kept within ±1°C, and also makes sure that the error, created after the beads have been foamed, is within +2%. When density is above 20kg/m3, then it is necessary to install the Proportioning *lve;
3. The hot air drying system (National Patent), with temperature going up to 75°C will make the EPS beads dry up very quickly, shap fast, speed up the aging process and shorten the production process;
4. Machine automatically detaches from the Feeder and the Electronic Weighing Scale, to avoid inaccurate and unreliable readings due to the vibration produced during the operation process of the machine;
5. The machine is equipped with four safety devices, which can safely guarantee the normal operation of the machine;
6. The computer system is equipped with the functions of storing and quantity counting. The Operator can just click on the Touch Screen, and then look up for the frequently used foaming technology parameters of the EPS raw material manufacturers. The Electronic Weighing Digital Display System can easily add digital printers(optional) can easily calculate production capacity of EPS raw materials per day, per month, or per annum, to facilitate the factory's internal statistical data and checking of accounts;
7. According to the customers* requirements, the remote communication system can be added to remotely monitor whether or not the machine is operating normally, and to troubleshoot any failure in the machine; as well as upgrade the software system in the machine so as to improve the technological performance of the machine;
8. The interior of the EPSBE1200 Batch Pre-Expander barrel with the temperature going up to 75°C makes the expanded EPS raw materials dry up very quickly. The foaming density can get up to 11kg/ m3, with fast shaping, good post-foaming, and it can eliminate the use of fluidized bed dryer, facilitate the delivery of the EPS beads, accelerate aging process, and shortened production lifecycle;
9. The use of advanced EPS foaming technology has enhanced the production efficiency, and improved the foaming quality. And as a result makes expansion of the EPS beads more accurate, lighter, faster, as well as reliable operation with low faulty rates
1. The company workshop 40,000 square meters, has introduced the first-class multi-station machining center, CNC lathes, CNC milling machines and other high-precision processing equipment. Such as the value of 4.5 million yuan 3mx8m gantry machining center, and the value of 300 million yuan 2.5 mx12m gantry milling machine.
2. The company has a professional The Adjuster team, 24 hours to provide uninterrupted after-sales service.
(1) Installation and debugging
Equipment arrived at the customer workshop, according to the flat layout of our equipment. We will arrange experienced technicians to install, debug and test-produce the equipment, and make the equipment reach the rated production capacity of the production line.
(2) Training
Our company provides technical training for our customers. The training includes the structure and maintenance of the equipment, the control and operation of the equipment, experienced technicians will guide and establish the training program. After training, the buyer's technical personnel can master the operation and maintenance of the equipment, can adjust the process and deal with different failures.
3. After-sales quality problems within 2 hours to answer, if the telephone video guidance can not be solved, domestic 24 hours to send engineers to the site to solve the problem.
4. Factory direct sales price concessions, 40,000 square meters factory, 20 years of Export Enterprises, CE certification, patents more than 100 items
We are the first drafter of the China National Standards for 3D Panel.
We cooperated with a German manufacturer where the first EPS block molding machine in the world was produced in 1960.
We have a joint venture with Alessio Hi-tech, a leading Italian company for shape molding and pre expansion technology of EPS and EPP.
We have Korean Hi-tech for continuous sandwich panel line with core in Polyurethane, Mineral Wool, Phenolic or EPS. Ten overseas branch offices are responsible for the worldwide sales and after-sales services.
We warmly welcome friends and all those who are interested in our products and services to visit our factories in Shanghai, China.
Shanghaizhongji presents the ZJM EPS Automatic Batch Pre-Expander, a robust solution designed to elevate polystyrene foam production through reliable expansion, consistent quality, and efficient workflow integration. The ZJM EPS pre-expander is engineered for manufacturers seeking to optimize raw material utilization, reduce variability, and maintain high-throughput operation. Built on proven design principles and contemporary automation, the ZJM EPS pre-expander delivers exceptional performance in both continuous and batch processing environments.
Product Overview and Core Capabilities
The ZJM EPS pre-expander serves as an advanced EPS pre-expander optimized for uniform bead expansion and precise control of density and bead morphology. As an automatic pre-expander, it integrates intelligent control systems with a modular mechanical layout to ensure stable steam distribution, accurate vacuum control, and reliable residence time management. The automatic pre-expander capability reduces operator intervention, enabling consistent output and minimizing human error. As a batch pre-expander, the ZJM EPS pre-expander allows flexible production scheduling, accommodating variable batch sizes and multiple formula presets. This makes it suitable for manufacturers producing insulation boards, molded components, packaging materials, and specialty foam products.
Key Features
- Intelligent Control System: The ZJM EPS pre-expander is equipped with an advanced PLC-based control unit and user-friendly HMI. This control system enables precise parameter setting for steam pressure, steam time, pre-evacuation, and post-evacuation cycles. As an automatic pre-expander, it supports recipe management for repeatable batch outcomes and quick changeovers.
- Uniform Steam Distribution: A carefully engineered steam manifold distributes heat evenly through each chamber of the batch pre-expander, ensuring homogeneous expansion across all beads. This uniformity is critical for downstream molding and racking operations and reduces material wastage.
- Multi-Chamber Flexibility: The ZJM EPS pre-expander offers multiple chamber configurations to support diverse production needs. Operators can run full or partial loads as required, maximizing energy efficiency and allowing smaller production runs without sacrificing quality.
- Precision Vacuum and Cooling: Integrated vacuum systems accurately remove residual blowing agent and moisture while controlled cooling cycles stabilize bead size and density. This level of control helps achieve consistent bulk density targets, crucial for producing high-grade molded parts.
- Energy Efficiency: HVAC-optimized insulation, steam economizers, and automated cycle optimization combine to reduce steam consumption and energy costs. The ZJM EPS pre-expander is designed to minimize operational expenses while maintaining high expansion performance.
- Hygiene and Maintenance Design: Accessible doors, modular internal components, and sanitary steam piping simplify cleaning and routine maintenance. The machine’s layout reduces downtime and facilitates swift service interventions.
- Safety and Compliance: The ZJM EPS pre-expander includes interlocks, pressure relief valves, and compliant electrical protection. Safety features ensure operator protection and adherence to industrial standards.
Applications
The ZJM EPS pre-expander is suited to a wide range of EPS applications:
- Construction Insulation: Producing expanded polystyrene beads for resin-bound boards, architectural panels, and RFID-embedded insulation units. The automatic pre-expander ensures tight density control required for thermal performance.
- Packaging Solutions: Manufacturing beads for protective packaging and molded foam inserts where dimensional stability and energy absorption are critical. Use of an automatic pre-expander yields consistent bead expansion for uniform cushioning properties.
- Molded Goods: Supplying pre-expanded beads for molded furniture, automotive components, and specialty foam parts where repeatability and bead integrity influence final part strength.
- Consumer and Industrial Products: Including buoyancy aids, sports equipment, and thermal containers, benefitting from the ZJM EPS pre-expander’s capability to support varied formulations and expansion ratios.
Innovation and Technical Advantages
The ZJM EPS pre-expander integrates innovations that set it apart from conventional EPS pre-expanders:
- Adaptive Cycle Optimization: Leveraging feedback loops from density and moisture sensors, the automatic pre-expander dynamically adjusts steam and vacuum sequences to meet set-point targets across varying raw material batches. This reduces rejects and improves yield.
- Modular Expansion Chambers: The batch pre-expander’s chamber segmentation allows independent control of each compartment. This modularity makes it possible to run different process recipes simultaneously, increasing production flexibility without additional capital equipment.
- Advanced Steam Management: A precision steam delivery system minimizes overshoot and maximizes thermal efficiency. The automatic pre-expander’s steam control reduces cycle variability, which is crucial for high-precision products.
- Digital Recipe and Traceability: Critical process data and recipes are stored, enabling traceability from raw material lot to final pre-expanded bead batch. This electronic record supports quality control, audits, and continuous improvement initiatives.
- Reduced Environmental Footprint: By optimizing steam usage and reducing waste due to inconsistent expansion, the ZJM EPS pre-expander contributes to lower energy consumption and fewer off-spec batches, aligning with sustainability goals.
Operational Benefits
- Consistent Quality: The ZJM EPS pre-expander’s automation and precise control yield reproducible bead size, density, and cell structure, driving better downstream molding and final product quality.
- Increased Throughput: Faster cycle times and reduced rework enable manufacturers to meet growing demand without compromising quality.
- Lower Operating Costs: Efficient steam utilization and minimized scrap translate into reduced cost per kilogram of expanded bead.
- Faster Time to Market: Recipe storage and rapid changeover capabilities help manufacturers respond quickly to changing product requirements and customer specifications.
- Scalability: The modular nature of the ZJM EPS pre-expander allows operations to expand capacity by adding chambers or integrating additional units as volume grows.
Integration and Support
Shanghaizhongji backs the ZJM EPS pre-expander with comprehensive commissioning, operator training, and after-sales support. Our experts assist with process optimization, recipe development, and periodic maintenance plans to keep the automatic pre-expander performing at peak efficiency. Integration support includes PLC customization, MES connectivity, and retrofit options for existing EPS production lines.
Why Choose the ZJM EPS Automatic Batch Pre-Expander
Manufacturers seeking a reliable, energy-efficient, and flexible EPS pre-expander will find the ZJM EPS pre-expander from shanghaizhongji offers a compelling combination of automation, modularity, and technical innovation. As an automatic pre-expander, it reduces manual oversight and delivers superior consistency. As a batch pre-expander, it supports flexible scheduling and small-run production without performance penalties. The ZJM EPS pre-expander stands out for precise steam control, adaptive process optimization, and a design focused on uptime and ease of maintenance.
The ZJM EPS Automatic Batch Pre-Expander by Shanghaizhongji represents a next-generation EPS pre-expander that addresses the critical needs of modern foam manufacturers: consistent bead quality, energy-efficient operation, and process flexibility. Whether you produce insulation panels, molded components, or protective packaging, the ZJM EPS pre-expander can enhance your production line’s performance while lowering operating costs and improving product consistency. Choose the ZJM EPS pre-expander to unlock reliable expansion control and streamlined production for your EPS manufacturing needs.
