Continuous High Quality PU Sandwich Panel Production Line

This PU sandwich panel production line is to make sandwich PU panel with the middle layer of anti-combustion polyurethane and with steel sheet/aluminum as the top and bottom surface layers. The sandwich PU can be 30-200mm in thickness, 1000mm in width, length determined by the customer. 

The operation principle of this line is as follows: raw materials of rigid-foam 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 solidity, then by an automatic tracking cutting mechanism, cut into segments according to the preset length. The line mainly consists of Decoiler, Roll forming machine, platform frame, PU foaming machine, belt conveyer, Cutting system, Control cabinet, etc.

Production process flow:

Upper decoiling – film covering -- roll forming

Bottom decoiling – film covering -- roll forming – Pre heating – PU foaming & injecting – PU solidifying – length cutting – run out – Auto stacking(optional)

Main technical parameters of the production line:

1. Production type: totally continuous production with PLC controlling

2. PU foam thickness: 30-200mm

3. Standard Sandwich Panel Size: max.1000mm in Width

4. Sandwich panel length: as per the customer need

5. Linear speed of production: 2-8m/min

6. Reciprocating times of injection head per minute: <60

7. Conveyer structure: Double belt conveyer aluminum caterpillar

8. Foaming system: totally automatically continuous foaming, quantity of foaming could be stepless adjustable

9. Main Power of production: Depends on machine configuration

10. Length cutting: pneumatic piston driving, non-stop cutting via sliding table

11. Electronic controlling system: PLC controlling system, touch screen operation