Question 1

What is a continuous PU sandwich panel line?

Accepted Answer

A continuous PU sandwich panel line is a coordinated production system that unrolls two steel coils, profiles their edges, pours high-pressure PU foam between them, cures the sandwich in a heated double-belt press, and cross-cuts finished panels at line speed. Typical line speed 6-14 m/min, press length 25-35 m, panel width 1.0-1.2 m, panel thickness 40-200 mm.

Question 2

How much does a continuous PU sandwich panel line cost?

Accepted Answer

Turnkey CAPEX 2026: USD 850K-1.4M for a small continuous line (25 m press, 240-480K m²/year), USD 1.5M-2.4M for a large continuous line (30-35 m press, 480K-1.2M m²/year). Add USD 300-800K for hidden CAPEX (coil racks, tank farm, thermal oil boiler, civil works, first 6 months raw material).

Question 3

What panel dimensions can a continuous line produce?

Accepted Answer

Width is fixed at line commissioning — 1.0 m or 1.2 m are the mainstream widths matching steel coil width. Length is programmable on the flying saw, typically 2-20 m. Thickness 40-200 mm at economic throughput; above 200 mm the line must slow to allow full cure.

Question 4

What foam density and k-factor does the line produce?

Accepted Answer

Standard cold-room panel spec: 38-45 kg/m³ core density, k-factor 0.020-0.024 W/m·K per ASTM C518, closed-cell content ≥ 93%. Blowing agent options: cyclopentane (mainstream, requires ATEX equipment), HFO-1233zd (low-GWP, non-flammable), HFC-245fa (legacy, phase-down).

Question 5

How long from PO to first commissioned panel?

Accepted Answer

7-10 months for a large continuous line, 5-7 months for a small continuous line. Discontinuous press-mould variant: 4-6 months. Timeline includes press manufacture, edge-profile tool cutting, sea freight, on-site installation, FAT and site acceptance.

Question 6

What certification does the finished panel support?

Accepted Answer

Panels produced on our lines certify to EN 14509 (European building assemblies), FM 4880 (US insured properties), ASTM E84 (surface burning), EN 13501-1 fire class B-s2,d0 with PIR core. Certification is the finished panel spec, not the line — we supply reference panels with each line to verify capability.

Continuous PU Sandwich Panel Line — 25-35 m Double-Belt Press Manufacturer

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