- Tuo AI
- Live
- My Account
- Shopping Cart
- Inquiry Basket
- Contact Us
- Back to Top
PU Sandwich Panel Continuous Production Line
Table of Contents
1. Definition
A PU sandwich panel continuous production line forms top and bottom steel skins, injects polyurethane foam, cures on a long double-belt press, and cuts panels to length. English name: PU sandwich panel continuous production line / polyurethane sandwich panel machine.
Some quotations also list rockwool spray / edge / rectangular-wool handling units. Confirm whether those units ship — do not assume “pure foam only,” and do not treat this page as the PU-edged rockwool recommended sheet.
2. Process and applications
- Top / bottom uncoiling, feeding, and shear
- Film covering, rib rolling, and skin forming
- Steel heating / coating stations as configured
- High-pressure foaming inside the laminator
- Double-belt curing and thickness setting
- Flying / tracking saw cut-off and exit conveyor
Applications. Continuous roof and wall insulated sandwich panels with a polyurethane core for industrial buildings, cold storage, and similar envelopes. Not an EPS glue line; not the Chinese PU-edged rockwool ~90 kW recommended sheet by default.
3. Reference parameters (PU continuous — keep variants labeled)
3.1 Main double-belt continuous reference
| Item | Documented reference |
|---|---|
| Production speed | Best run about 4 m/min; design best about 5 m/min; decoiler design max about 10 m/min (best about 4) |
| Installed / heating power | Installed about 40 kW (+ optional heating about 90 kW); double-belt heating < about 80°C / about 150 kW unit wording |
| Footprint / belt | Minimum about 90 m × 20 m; height > about 6 m; double belt about 24 m; operation height about 1300 mm |
| Face / coil | PPGL/PPGI about 0.35–0.8 mm; coil about 5 T; width max about 1250 mm; ID about ø508; OD max about 1100 mm |
| Upper forming unit | Adjustable width about 600–1200 mm; about 14 rolls; shaft about ø50; about 5.5 kW cantilever class |
| Saw | About 7.5 kW; length tolerance about ±2 mm; cut width about 1300 / thickness about 150 mm class |
| Core thickness | Confirm in contract — main English quote does not lock one universal core |
3.2 Belt-type rigid-foam variant (do not merge)
| Item | Variant reference |
|---|---|
| Line speed | About 2–6 m/min; roll-press max about 15 m/min (forming side note) |
| Main power | ≥ about 35 kW |
| Face / width | About 0.35–0.75 mm; effective width about 1000 mm |
| Core tiers | 35 / 50 / 75 / 100 mm |
4. Boundaries
- PU-edged rockwool continuous — Normal about 3–5 m/min; whole-line about 90 kW; core about 50–100 mm. Separate family.
- EPS / rockwool glue composite — About 5 m/min; about 50 kW; manual board feed. Not full-core PU foam.
- Carved / decorative facade panel lines — Different machine family.
- Do not average belt 2–6 / ≥35 with double-belt 4–5 / 40(+90) into one public “PU speed.”
5. Buyer FAQ
Does every PU continuous quote include rockwool edge units?
No. Some BOMs list rockwool spray / edge / rectangular-wool handling — confirm on the signed equipment list.
Is best about 4 m/min the same as belt hard-foam 2–6 m/min?
No. Label the configuration. Use the dedicated belt hard-foam page when that variant is selected.
Can I use rockwool whole-line 90 kW as this line’s installed power?
No. Main PU continuous installed is about 40 kW (+ optional ~90 kW heating). Rockwool ~90 kW is a different class total.
What core thickness should I publish?
Do not invent one fixed public core for the main double-belt quote. Lock molds and recipe on the proposal; belt hard-foam may list 35/50/75/100 mm tiers.
Final ratings follow the named PU continuous proposal. Price and lead time are out of scope.
References
- SANDWICH-PU thematic FAQ (Q1–Q11 process, speed, power, footprint, variants)
- Related encyclopedia: belt hard-foam variant; sandwich boundary; footprint notes
- Industry continuous PU context: Continuous PU/PIR sandwich panel production line overview