Hangzhou Epsole Machinery Co., Ltd. is one of the most reliable manufacturers and suppliers of Uniform Density Styrofoam Block Moulding Machine in China. We warmly welcome you to buy high quality Uniform Density Styrofoam Block Moulding Machine for sale here from our factory. Good service and reasonable price are available.
Uniform Density Styrofoam Block Moulding Machine | Epsole
Multi-point steam injection and through-heating reach the core and corners at the same time. Batch density tolerance of ≤±0.5 kg/m³ 【to confirm】 - cut it open and there's no raw core and no voids. Designed to 【European standards】, with a frame stress-relieved after welding to stay true over years of use.
Key Selling Points
No raw core: steam penetrates to the centre
No voids: even filling plus air and condensate removal
Even edges: zoned steaming keeps corners from overheating
Three Problems You Only Find When You Cut the Block
Raw Core: Fused Outside, Loose Inside
Steam enters through the mould walls and heats the nearest beads first. If it doesn't penetrate far enough, cooling starts before the core has fused. Once cut, the middle sheets crumble, failing on both strength and insulation.
Internal Voids: Holes in the Cut Face
Uneven filling, plus air and condensate left in the cavity, leave voids or loose zones inside the block. Your customer finds them on the first cut, and the whole block is downgraded or scrapped.
Uneven Density: Hard Edges, Soft Centre
Areas near the mould walls get more heat for longer and over-fuse, ending up denser and harder, while the centre is under-heated and lighter. Sheets cut from the same block vary in weight and performance.
| Technical Parameters | EPS Automatic Board Molding Machine | Industry Standard Level | Value |
|---|---|---|---|
| Foaming Density Range | 4.5–60 kg/m³ (Stable production across the full density range of 6–45 kg/m³) | Typically 6–40 kg/m³ | Covering the full spectrum of materials-from lightweight packaging to high-density construction materials-this single machine offers versatile, multi-purpose functionality. |
| Density Tolerance Control | ≤ ±0.5 kg/m³ (Dual Closed-Loop Control: High-Precision Level Sensor + Pressure Sensor) | Typically ±1–2 kg/m³ or 3%–5%. | Batch-to-batch density consistency is exceptionally high, resulting in a significant reduction in downstream cutting scrap rates. |
| Steam Consumption (Lightweight Board: 4 kg/m³) | Producing one ton requires only 2 to 2.5 tons of steam, achieving overall energy savings of 30% to 50%. | Typically 4.4–5.5 tons of steam per ton of board. | Steam accounts for 60–70% of operating costs, resulting in annual operating cost savings of tens of thousands of dollars. |
| Molding Cycle | 50–80 seconds per mold (based on a standard 600mm-thick block) | Typically 4-8 minutes/mole | Production efficiency has improved significantly, and daily output has increased substantially. |
| Producible Sheet Sizes (Standard) | Length: 2000–6000 mm; Width: 1240 mm; Height: 1000 mm (Customizable) | Depends on the mold. | Compatible with standard building board dimensions, reducing the need for secondary cutting. |
| Vacuum Cooling System | High-efficiency vacuum system + cooling unit: boosts molding speed and reduces moisture content. | Conventional Cooling Device or Air Cooling | Higher molding efficiency, lower board moisture content, and faster dispatch. |
| Control Architecture | PLC + Touch Screen: Fully Automatic Cycle Control (Mold Closing, Feeding, Heating, Heat Preservation, Cooling, Mold Opening, Ejection) | Semi-automatic or Manual | 1–2 operators per shift, significantly reducing labor costs. |
| Equipment Rigidity | High-strength square steel tubing combined with thick steel plates; the six panels undergo aging heat treatment to eliminate welding stresses. | Standard Welded Structure | Resists deformation under prolonged high-temperature and high-pressure operation, maintaining stable precision. |
| Mold Clamping System | Hydraulic mold locking-stable and reliable. | Mechanical Mold Lock | Maintains precision under high-pressure conditions, ensuring stable molding quality. |
| Compliance Certification | ISO 9001 + CE Certification | Depends on the supplier | Hassle-free global customs clearance, compliant with safety regulations worldwide. |
Getting Steam to the Core and Edges at the Same Time
Multi-Point Steam Injection: Shorter Path to the Core
Steam enters from several directions at once, so every bead is close to an inlet and the core reaches fusion temperature almost as soon as the edges.
01
Through-Heating: Evacuate First, Then Cross-Steam
It can't block the steam. The program then cross-steams - alternating top/bottom and side to side - to drive steam to the centre, and finishes with a full pressure hold so fusion is complete.
02
Zoned Steam Control: Edges Not Overcooked, Core Not Underdone
Each zone has its own valve, and the PLC sets the order and timing for every zone according to the density recipe. Pressure and level sensors form a dual closed loop that corrects in real time
03
Air and Condensate Removal: No Room for Voids
Drains and steam traps at the cavity bottom remove condensate as it forms, and the vacuum system keeps extracting moisture during cooling - lowering block moisture and shortening ageing time.
04
Core Product Advantages
High-Precision Density Control
The equipment features a dual closed-loop automatic control system that integrates high-precision material level sensors and pressure sensors.
High-Efficiency, Energy-Saving Steam System
Utilizing an advanced EPS thermal penetration process and an optimized piping structure design, the equipment achieves comprehensive energy savings of 30% to 50%.
High-Efficiency Vacuum Cooling System
The equipment employs a high-efficiency vacuum cooling system combined with a convective air cooling dual-mode, reducing the molding cycle for a single board to just 50–80 seconds.
High-Strength, Rigid Machine Body Design
The entire machine body is constructed from welded high-strength square steel tubing and thick steel plates, ensuring that the main structural frame remains permanently free of deformation, even under prolonged operation at high temperatures and pressures.
Fully Automatic PLC + HMI Control System
The equipment's control system integrates a fully automated operational cycle; operators simply need to set the parameters via the touchscreen interface, and the system automatically executes the entire process from start to finish.
High-Quality Board Output
By utilizing an advanced EPS thermal penetration process, the equipment ensures exceptional consistency in quality-both internally and across all six surfaces of the board-resulting in a finished product that is free from deformation or internal voids.
Why Choose Us
Global Reach
Products sold in over 30 countries, with a cumulative delivery of more than 100 complete EPS production lines.
01
Complete Line Supply Capability
We provide a full suite of EPS production line equipment, covering every stage from pre-expansion, curing, and block molding to cutting and recycling.
02
Quality Assurance
ISO 9001:2015 Certified; CE Certified.
03
Installation & Training
For overseas projects, our team of engineers provides on-site installation, commissioning, and operational training.
04
Payment Terms
TT, Sight L/C; Trade Terms: EXW, FOB Shanghai, CIF.
05
FAQ
How do you prove the block density is uniform?
What causes a raw core, and how does this machine prevent it?
Can you test with our own beads?
Why does stress-relief annealing matter?
What density range can it produce reliably?
Can the block length be customised?
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