Introduction
Sandwich Panel Production is crucial for the insulation and thermal performance of container house walls and roofs. Sandwich panels consist of two layers of metal sheets (typically color-coated steel) with an insulating core material (such as expanded polystyrene, polyurethane, or rock wool) sandwiched in between.
Equipment
- Sandwich Panel Production Line: An automated production line that continuously performs decoiling, profiling, adhesive application, insulation material compounding, and cutting.
- Foaming Machine: If polyurethane is used as the core material, a foaming machine is required to inject and expand liquid polyurethane raw material between the two panels.
Materials
- Color Coated Steel Sheet: Serves as the inner and outer panels of the sandwich board, offering aesthetic appeal, corrosion resistance, and weatherability.
- Insulation Materials:
- Expanded Polystyrene (EPS): Relatively low cost, good insulation performance, lightweight.
- Polyurethane (PU/PIR): Excellent insulation performance, higher fire rating, but relatively higher cost.
- Rock Wool: Best fire performance, good sound insulation, but heavier.
- Adhesive: Used to bond the insulation material to the color-coated steel sheets.
Operation
On an automated production line, color-coated steel sheets are first profiled into corrugated or flat shapes. Then, the insulation material is precisely placed or filled between the two layers of steel sheets. Through heating and pressing, the insulation material is firmly bonded to the steel sheets. Finally, the panels are cut to the required dimensions.
