Sandwich panel line

manufacture polyurethane or phenol-laminated sandwich panel with aluminum foil facings.

  This production line is a kind of specialized equipment for producing laminated panels with the middle layer of anti-combustion polyurethane or polyisocyanurate or phenolic polyfoam and with embossed aluminum foil as the top and bottom face layers. The laminated panel is between 20 and 30 mm in thickness, 1200mm in width, length determined by the customer. The panel is mainly used for making the ventilation duct for central air-conditioners. Different insulating panels with other soft facing layers could also be produced on the line. The operation principle of this line is as follows: Raw materials of rigid-foam liquids are delivered into the mixing head through the metering pump on the injection machine and then injected onto the bottom facing sheet going to conveyors along with the top superficial sheet. Between the upper and lower conveyors, the liquid materials are hardened into shape, after which the laminated panel is edge-trimmed and, by an automatic tracking cutter, cut into segments according to the preset length.

1. Embossing machine unit  2. Reaction injection machine  3. Foil decoiler  4. Double-belt laminator5. Hot-air circulator 6. Cross-cutter 7. Edge-trimming installation 8. Mobile injector  9. Pre-heating table

Main technical parameters

Specification of produced panel                                    1200 mm×20~30 mm (Width×Thickness), Length on requestLinear speed of production                                             2~5 m/minMaximum embossing speed                                         15 m/min max. Agitating speed                                                                 4500 r/minReciprocating times of injection head per minute     more than 60Maximum temperature of hot-air circulating                70°CLaminating length of laminator                                      18 mMaximum clearance between conveyors                     250 mmTotal power (KVA)                                                             85~125Overall external dimensions                                          40340×5365×3636 mm (Length×Width×Height)External dimensions of embossing machine unit  7050×3200×1600 mm (Length×Width×Height)Weight                                                                                 ≈33 tons

Sandwich panel line