High-Flow PU Foam Machine for Box Foam Blocks
High‑capacity slabstock foaming system with dual vacuum degassing and servo closed‑loop metering, delivering near‑zero bubble, stable density for furniture, automotive, construction & military applications.
Output Flow Range
1～15 kg/min (customizable)
Metering Accuracy
±0.3%
Mixing Ratio Range
A:B = 1:3 ~ 3:1
Mixing Head Speed
2000～6000 rpm (VFD adjustable)
Product Overview
The HF‑LPM‑1A1B‑LO is a high‑flow PU foaming machine with dual vacuum degassing and servo metering, ensuring near‑zero bubble and consistent foam quality for large box blocks.
This advanced slabstock foaming machine is purpose‑built to solve common production issues such as bubble defects, ratio drift, unstable density, and poor line coordination when producing large foam blocks. It features a dual vacuum auxiliary degassing system (tank vacuum + pouring head terminal vacuum) that reduces bubble rate by over 70%, combined with a high‑shear dynamic mixing head (2000‑6000 rpm) for fine, uniform cell structure. The servo closed‑loop metering system monitors and compensates flow errors in real time, completely eliminating ratio drift and ensuring absolute stability of A/B component proportions. With an adjustable output flow from 1 to 15 kg/min (customizable) and a mixing ratio from 1:3 to 3:1, the machine handles diverse formulations including high‑resilience foam, memory foam, rigid insulation, and custom industrial/military PU blanks. Its intelligent PLC control platform stores multiple recipes, enables one‑click switching, and includes automatic cleaning and fault self‑diagnosis. The synchronous beat linkage design ensures perfect coordination with automated conveying lines, automatically entering buffer mode when upstream stations pause. A single pour can produce several cubic meters of foam blanks, dramatically improving mass production efficiency. The machine also comes with 1‑year warranty, overseas installation/training, and lifetime remote technical support.
Production Workflow
Raw Material Degassing
Load polyol and isocyanate into tanks (250‑1000L for A, 200‑800L for B); activate tank vacuum degassing to remove dissolved air and moisture.
Recipe Selection & Ratio Setting
Choose stored formula on touch screen; set A:B ratio (1:3 ~ 3:1) and target output flow (1‑15 kg/min) per foam type.
High‑Shear Mixing & Pouring
Servo pumps deliver precise amounts to dynamic mixing head (2000‑6000 rpm); terminal vacuum further degasses; pour into large box mold with synchronized conveyor motion.
Curing, Demolding & Cleaning
After foam rises and cures, demold the block; automatic cleaning cycle flushes mixing head to prepare for next pour.
Request a Quote for Your Slabstock Foam Production Line
Get a QuoteTechnical Specifications
Specifications are based on standard configurations at ambient conditions. Customizable output, tank sizes, and component counts (2‑6) are available upon request.
| Technical Parameter | HF-LPM-1A1B-LO |
|---|---|
| Output Flow | 1kg/min / 5kg/min / 10kg/min / 15kg/min, non-standard customization supported |
| Mixing Ratio Range | A:B = 1:3 ~ 3:1, adjustable freely |
| Raw Material Tank Capacity | Tank A: 250L / 500L / 1000L; Tank B: 200L / 450L / 800L, customized volume available |
| Installed Power | Configured according to discharge flow & temperature control demands |
| Mixing Head Speed | 2000~6000rpm, frequency conversion adjustable |
| Metering Accuracy | ±0.3% |
| Total Machine Weight | 2200kg (excluding supporting auxiliary equipment) |
| Warranty | 1-year full machine warranty |
| Certifications | CE standard, EN 60204-1 electrical safety, ISO 9001 quality system. |
| Brand | Haifeng |
Key Advantages
Five engineering innovations that eliminate bubble defects, ratio drift, and production downtime, ensuring stable output and high equipment OEE (＞85%).
Dual Vacuum Auxiliary Degassing
Tank vacuum degassing plus pouring head terminal vacuum reduce bubble rate by over 70%, producing fine, uniform foam cells with no shrinkage or cracking.
Servo Closed‑Loop Metering
Real‑time flow error monitoring and compensation completely eliminate ratio drift, ensuring consistent foam softness and cutting raw material waste.
Stable Long‑Term Continuous Production
Automated high‑precision metering minimizes manual adjustments and downtime; supports 24/7 operation with consistent quality and reliable delivery cycles.
Intelligent PLC Control with OEE ＞85%
Touch screen stores multiple formulas with one‑click switching; full batch data traceability (ratio, pressure, temperature); built‑in auto‑cleaning and fault self‑check alarm.
Synchronous Beat Linkage Design
Encoder and sensor full linkage enables “mold chasing the mixing head”; upstream stall triggers automatic buffer mode to avoid wasted material and downtime.
Comprehensive After‑Sales Support
1‑year warranty, overseas engineer on‑site installation/commissioning/training, lifetime remote technical guidance, and timely global spare parts supply.
Let’s Build Your Turnkey Slabstock Foaming Solution
From equipment design to on‑site installation, we offer complete turnkey projects. Our engineers will tailor the tank size, output flow, and automation level to your production volume and foam types.
Industries & Applications
The HF‑LPM‑1A1B‑LO is the core equipment for producing large PU foam blocks used in furniture (high‑resilience foam, memory foam for mattresses and sofa cushions), automotive (car seat filling foam and interior soft padding), construction (rigid thermal insulation blocks), and military/industrial sectors (custom PU foam blanks). Single pours yield several cubic meters of foam, ideal for high‑volume cutting and downstream processing. We also provide complete turnkey projects from design to commissioning.
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