PU Sandwich Panel (PUF Panel) Production Line — Buyer’s Overview
A PU sandwich panel production line — known across India, Pakistan and South Asia as a PUF panel machine (PUF = polyurethane foam) — injects rigid polyurethane between two metal facings to produce insulated panels for cold storage, cold rooms, roofing sheet, warehouses and prefabricated buildings.
The line meters and mixes two-component PU at high pressure, distributes it across the moving facings, and cures the panel under controlled heat and pressure. Panel thickness, width, core density and facing profile are configured to your product — whether you are making cold storage panels, PUF roofing sheet, or clean-room partitions.
New to the process? See our PU sandwich panel line buying guide. For spray-applied insulation instead of panels, see the PU spray foam machine; for the high pressure metering unit itself, see the high pressure PU machine.
Technical Parameters
| Panel core | Rigid polyurethane (PU) / PIR |
| Common thickness | 30 – 200 mm (cold storage typically 75 / 100 / 150 mm) |
| Core density | Configured to your specification (typ. ~38–45 kg/m³ for cold storage) |
| Facings | Pre-painted steel, galvanised steel, aluminium, stainless (food grade) |
| Metering | High pressure two-component, closed-loop ratio control |
| Line type | Continuous (double-belt) or discontinuous (press) — see comparison above |
| Configured by | Panel width, thickness range, output (m²/h) and facing profile |
Continuous vs Discontinuous PUF Panel Line — Which Do You Need?
The single biggest decision when buying a PUF panel machine. It is driven by your annual volume and how many panel formats you run.
| Continuous (double-belt) | Discontinuous (press) | |
|---|---|---|
| Best for | High volume, continuous roofing / wall panel output | Medium volume, cold room panels, varied formats |
| Panel length | Cut to any length in line | Limited by press size |
| Facings | Steel coil, continuous profiling | Pre-cut sheets, incl. thick / rigid facings |
| Format changeover | Slower — set up for a running profile | Fast — suits many panel types |
| Investment | Higher | Lower entry cost |
| Typical buyer | Panel manufacturer supplying construction market | Cold storage / cold room fabricator |
Cold storage and cold room fabricators most often start with a discontinuous press line; PUF roofing sheet producers usually need a continuous line. Tell us your annual m² and panel mix and we will size it.
What PUF Panels Are Used For
- Cold storage & cold rooms — the largest application. PUF panel is the standard insulated envelope for cold storage plants, freezer rooms and food processing.
- PUF roofing sheet & wall cladding — insulated roofing for warehouses, factories and pre-engineered buildings.
- Prefabricated & modular buildings — PUF panel houses, site cabins, clean rooms.
- Solar / off-grid cold storage — growing rapidly for agricultural produce in India and Africa.
- Food processing & pharma clean rooms — hygienic, washable insulated partitions.
Frequently Asked Questions
What is a PUF panel machine?
How are PUF panels made?
Continuous or discontinuous line — which should I buy?
What panel thickness can the line produce?
What does a PUF panel manufacturing plant cost?
Do you supply to India and export markets?
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