Can You Use PU Continuous Line Figures for PU-Edged Rockwool Lines?

1. Short answer

No. Sharing the word “PU” does not make the plants interchangeable. Continuous full-core foam and PU-edge rockwool are different products, BOMs, and power sheets. Cross-filling speed or kilowatts misstates the process.

2. Side-by-side references

Publish the rows as separate answers. Never average them into one “sandwich line” rating.

3. Why they differ

• Core — chemical foam slab vs mineral-wool boards/strips
• PU role — full fill vs edge seal (+ face adhesive)
• Stations — foam head + long double belt vs rockwool handling + edge foam + laminate
• Power story — installed + optional heat vs whole-line magnitude near 90 kW

Industry PU-edge product pages describe the same split: rockwool for fire/thermal stability of the core, polyurethane only at the sealed edges — useful market context, not a license to paste foam-line kW into an edge plant.

Even when both proposals appear in one commercial pack, encyclopedia answers still open the matching configuration sheet. A shared catalog leaf is not a shared rating table.

4. Also keep EPS glue separate

EPS / mineral-wool glue lines are a third family (recommended about 5 m/min / ~50 kW; short table ~0–4 / ~28). Selection starts from core type and bonding method, then opens the matching configuration sheet. Do not answer a glue inquiry with either row in the table above.

Hand-fed board composite without PU side seal is still not “almost the same as PU-edge.” Automation level and edge sealing change the BOM enough that numbers must stay labeled.

5. Common traps

• Quoting PU-edge ~90 kW for a PU foam or glue inquiry
• Assuming every sandwich line includes automatic rockwool splitting
• Treating optional rockwool modules on a PU continuous BOM as proof that RW recommended numbers apply
• Merging belt hard-foam ~2–6 m/min into the rockwool normal 3–5 band

6. Buyer FAQ

What if a quote lists both foam and rockwool units?

Treat each unit line on the BOM separately. Still two families in the encyclopedia — confirm which product the buyer actually ships day-to-day.

Both say “about 4–5 m/min” — can I reuse one number?

No. The overlap is coincidental labeling. Power, stations, and core formation still differ. Name the configuration every time.

Where do I go next for process maps?

Open the matching continuous PU, PU-edge rockwool, or glue-line process map for the configuration you are quoting.

How do I choose which family to buy?

Start from core duty (thermal foam vs fire A1 rockwool vs budget EPS glue) on the which-line selection page — then open the matching equipment page. Do not start from a borrowed kW table.