Hangzhou Epsole Machinery Co., Ltd. is one of the most reliable manufacturers and suppliers of pre expanding polystyren machinery in China. We warmly welcome you to buy high quality pre expanding polystyren machinery for sale here from our factory. Good service and reasonable price are available.
The pre-expander constitutes the initial stage of an EPS production line, and its performance directly determines the quality of the finished products in all subsequent processes. By utilizing steam heating, the EPS pre-expander expands raw EPS beads to a target density, thereby preparing the raw materials for subsequent operations such as molding and cutting. On the global market, pre-expansion equipment is primarily categorized into two types: batch-type and continuous-type. Batch-type pre-expanders process EPS beads in discrete batches, offering greater control over the density and quality of each specific batch; they are well-suited for small-to-medium volume production or the manufacturing of multiple product varieties. Conversely, continuous-type pre-expanders are designed for large-scale, continuous production operations.
Core Strengths
Density Control Precision
Constant-temperature and constant-pressure foaming is achieved through a dual closed-loop automatic regulation system, ensuring highly consistent bead density across every production batch.
Steam Energy-Saving Design
The intermediate thermal insulation layer-composed of nanoporous aerogel-ranks among the materials offering the most superior thermal insulation performance currently available in the industrial sector.
Vacuum Drying System
Immediately upon the completion of the foaming process, the vacuum pump activates to extract residual steam and condensate from the foaming vessel, thereby rapidly reducing the moisture content of the beads.
Automated Control System & PLC Architecture
The control system is centered around a core PLC,paired with a high-brightness, industrial-grade 10-inch touchscreen interface that features a built-in recipe storage system.
Precision Steam & Compressed Air Control System
High-precision pilot-operated pressure-reducing valves, integrated with a PID closed-loop algorithm, enable the automatic matching of steam temperature to suit various target density requirements.
Electronic Weighing System & Closed-Loop Feedback Control
The equipment is outfitted with high-precision load cells and a photoelectric material-level control system, ensuring dual-redundant precision control over the raw material filling process.
±1.0% Tight Tolerance - PID Constant Temperature and Pressure Control; significantly tighter than the industry standard of ±2.5%–3%
Over 35% Comprehensive Energy Savings - Aerogel Insulation Layer + Fully Enclosed Structure
30% Reduction in Curing Time - Dual-System Drying (Vacuum + Hot Air)
Japanese SMC/CKD Pressure Reducing Valves + OMRON/Siemens PLCs - Core Components from Leading International Brands
ISO 9001 + CE Certified - Compliant for Export, Globally Accepted
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