Answer Capsule
High-pressure PU foaming machines (100–1,500 g/s output) are the standard for refrigerator, freezer and cold room panel lines producing 500+ units/day. Low-pressure systems (5–100 g/s) suit small-batch and irregular geometry applications like wine cellars and display cases.
Decision Framework
The choice comes down to three factors:
- Daily Capacity: Over 500 units/day requires high-pressure
- Product Geometry: Irregular shapes benefit from low-pressure dynamic mixing
- Foam Density Target: High-density 40+ kg/m³ needs high-pressure precision
High-Pressure Systems
- Output: 100–1,500 g/s
- Pressure: 100–200 bar
- Ratio accuracy: ±1%
- Capital cost: $85,000–$280,000
- Energy: 30–75 kW
Low-Pressure Systems
- Output: 5–100 g/s
- Pressure: 10–30 bar
- Ratio accuracy: ±2%
- Capital cost: $15,000–$55,000
- Energy: 3–15 kW
FAQ
Can I start with low-pressure and upgrade later?
Yes, but plan for the footprint. High-pressure machines typically need 4–6× more floor area and dedicated chemical feed systems.
What about HFO blowing agents?
All modern UREXCEED high-pressure systems are HFO-ready. Retrofitting older systems is possible but costly.
Do I need a chiller?
Yes, both systems require chemical temperature control to 20–25°C.