Typical Process Flow — PU-Edge Configuration (Rockwool/EPS Composite Line)

1. Definition

This page maps the PU-edge configuration for continuous rockwool-core sandwich panels: metal skins are formed, rockwool is conveyed and adhesive-bonded to the faces, polyurethane is foamed into the side gaps for edge sealing, then the stack is roller-laminated and tracking-sawn. It is not full-thickness continuous PU core foaming, and it is not the simpler EPS/rockwool glue-only plant.

2. Operating sequence

1. Decoil
2. Front shear / film / rib
3. Upper / lower form
4. Rockwool convey + adhesive spray
5. PU edge sealing foam
6. Roller laminate / cure
7. Side chain
8. Tracking saw
9. Support / exit

Industry continuous rockwool plants may add rockwool slit, 90° turn for fiber orientation, and edge milling before glue — automation level follows the named BOM. Public PU-edge workflow articles describe inject-at-side-gap + laminate + cure as market context; keep density and power on the documented baselines below.

3. PU edge note

Low-pressure edge foam (density about 45±5 kg/m³ class on the CN technical sheet; foam pressure max about 0.3 kg/cm² wording) fills side gaps so rockwool fibers are sealed against moisture and air leak. Face bonding remains adhesive spray. This is not the same as filling the entire panel thickness with continuous PU foam.

4. Speed and power checkpoints

5. Boundaries

• Not continuous full-core PU — do not paste best ~4 m/min / ~40(+90 heat) foam-line figures here.
• Not EPS glue configuration — glue-only composite without PU edge foam is a different station list (~5 m/min / ~50 kW class on that sheet).
• Profile changeover uses roll sets per contract drawings — do not invent a cassette story from another family.
• Do not borrow this page’s ~90 kW whole-line figure as the answer for a pure PU foam inquiry.

6. Buyer FAQ

Can I use continuous PU foam-line speed here?

No. Open the PU continuous equipment and speed-tier pages for foam-core figures. This configuration’s normal band is about 3–5 m/min with whole-line power around 90 kW — different core and BOM.

Is PU edge the same as filling the panel with foam?

No. Edge foam seals the rockwool sides. The core remains mineral wool bonded with adhesive. Full-core chemical foam is a different process family.

How does this differ from the glue EPS/rockwool flow?

Glue configuration typically hand-feeds boards and bonds with adhesive/heat only, then flying-saws. This PU-edge flow adds continuous rockwool handling and side-seal foam before roller laminate and tracking cut.

What if a quote lists both foam and rockwool modules?

Treat each unit line on the BOM separately. Still two process families in the encyclopedia — do not invent one merged speed/power table.