Automatic EPS Pre-Expander Machine With Precise Density Control

Automatic EPS Pre-Expander Machine With Precise Density Control

This Automatic Continuous Working Type EPS Pre-Expander is designed for high-efficiency, non-stop polystyrene foam production. With High-Volume Throughput, Uniform Expansion and Energy & Space Efficiency, It is a key solution for manufacturers who require a steady, high capacity supply of expanded beads for various Styrofoam products.
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Hangzhou Fuyang Dongshan Plastic Machinery Co., Ltd. is one of the most reliable manufacturers and suppliers of automatic eps pre-expander machine with precise density control in China, also supports customized service with low price. Welcome to wholesale high quality automatic eps pre-expander machine with precise density control for sale here from our factory. Contact us for pricelist.

 

Automatic Continuous Working Type EPS Pre-Expander Polystyrene Foam Maker for Styrofoam products Manufacturing

product-1200-800

The Dongshan High Precision EPS Batch Pre-Expander is designed for the accurate and efficient pre-expansion of EPS beads, providing stable density control for the production of EPS insulation boards, packaging materials, ICF blocks, and other high-quality foam products. Combining intelligent automation with advanced density control technology, it ensures consistent bead expansion, high production efficiency, and reduced energy consumption.

The machine features a stainless steel expansion chamber that provides excellent corrosion resistance, stable heat transfer, and long service life. Its intelligent density control system continuously monitors the expansion process and automatically adjusts operating parameters to achieve precise bulk density with minimal deviation, ensuring consistent raw material quality for subsequent molding processes.

The advanced steam recycling system improves steam utilization while reducing energy consumption and operating costs. A Korean vibration measuring rod provides accurate material level detection, while the automatic weighing system ensures each production batch meets the required density specification. The optimized feeding and discharge system delivers stable material flow, minimizes bead damage, and improves overall production efficiency.

Designed for reliability, precision, and long-term performance, the Dongshan High Precision EPS Batch Pre-Expander is an ideal solution for manufacturers seeking high-quality EPS bead expansion, consistent product quality, and lower production costs. It can be seamlessly integrated into complete turnkey EPS production lines for modern, automated foam manufacturing.

product-1200-800

Core Component & Performance Matrix

 

 

System

Key Component / Brand

Operational Advantage

Pressure Regulation

Batton (Germany) / Yoshitake (Japan)

Constant-pressure stability; ±0.01MPa variance

Thermal Logic

Dual Proportional Valves

Precise high-density expansion control

Motion Control

Frequency-Inverter Spindle

Adaptive agitation for various material types

Level Sensing

Korean Vibration Sensors

Uniform bead density and volume control

 

1

 

Performance & Efficiency Optimization

High- Efficiency Flow Design: Large butterfly valve ensures stable vacuum and rapid discharging; DN 150 feeding valve reduces feeding time by 6- 8 seconds; vacuum cooling system with buffer tank improves pre- vacuum efficiency, significantly shortening the overall cycle.

Synchronous Operation: Dual- barrel vacuum feeding system enables simultaneous discharging and feeding, ensuring uninterrupted production.

Material Handling & Conveying System

Uniform Conveying: Four discharge ports for synchronous discharging; multi- port air supply in vacuum system ensures uniform ventilation of particles; wind- shielded feeding device (stainless steel) adapts to heavy materials, offering fast and durable performance.

Insulation & Stirring: Thickened insulation cotton reduces barrel heat loss; stirring spindle with frequency converter supports multi- speed adjustment, ensuring stable processes.

product-901-545

Precision Control & Stability Assurance

Sealing & Regulation: Four sets of discharge cylinders with imported sealing compo nents for long- term reliability; German Burkert proportional valves, pressure sensors, and temperature transmitters precisely control steam and cold air circuits, achieving constant tem perature and pressure foaming, suitable for multi- weight processes.

Air Supply & Temperature Control: Japanese SMC pressure reducing filter and sec ondary pressure stabilization system ensure stable compressed air; feeding fan with steam proportional valve maintains constant air temperature in various environments.

Production Efficiency

Protection System: Pipeline safety valves provide dual protection for steam pressure; stainless steel crushing and screening device intercepts agglomerates to prevent blockages.

Intelligent Functions: Automatic density weighing system displays real- time cycle weight and supports data interfaces; dual- vibration level gauge combined with viewport clean ing system avoids level misjudgment.

Durability & Maintenance: Key components use corrosion- resistant stainless steel; vacuum tank has inspection port, cooling system with imported hoses to reduce vibration and protect pumps.

 

Technical Specifications

 
Number ltem Unit DS1200
1 Expand Chamber Chamber mm φ1200×1470
Effective Volume 1.35
2 Steam Entry inch DN50
Pressure Mpa 0.5-0.6
3 Compressed Air Entry inch DN40
Pressure Mpa 0.55-0.7
4 Drainage Upper Vent mm DN150
Down Vent mm DN100
5 Capacity 12g KG 600-800kg/h
18gl KG 900-1200kg/h
25gl KG 1100-1300kgh
32gl KG 1200-1400kgh
6 Total Power KW 31.05
7 Expanding Tolerance % ≤±0.5%
8 Overall Size(L×W×H) mm 2300×2300×6000
9 Weight KG 5500

 

Product Applications

 

Building Insulation Field

Packaging Industry

Advertising and Decoration Industry

Cold Chain Logistics Field

Other Fields

Application

 

Why Choose Us

 

Why Choose Us

 

 

Certifications and Awards

 

Certifications and Awards

 

the final view of project

 

project2

 

Exhibitions with Global Customers

 

Exhibitions

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