Choosing an appropriate core to maximize panel performance is essential to delivering a high-efficiency solution while remaining cost effective and lightweight. Sandwich panels consist of paired rigid facings bonded to a robust yet weight-optimized interior core, and the central filler serves as the foundation in determining stiffness, insulation, weight, and durability.

Polyurethane foam cores are popular in building envelopes and cold chain systems due to their superior heat resistance and strong bonding with face sheets. They offer high compressive strength and are typically deployed where thermal performance is critical. However, they can be sensitive to high temperatures and may emit toxic gases during combustion unless chemically stabilized for fire safety.

PS cores in EPS or XPS configurations is widely used because it is economical, simple to machine, and provides good moisture resistance. It is common in packaging and temporary structures but lacks the thermal performance and fire resistance of polyurethane. Extruded polystyrene has better mechanical properties than Foamed PS, making it a better choice for کانکس ساندویچ پانل structural supports.

Honeycomb structures, typically made from aluminum alloys, kraft paper, or thermoplastics, offer remarkable load capacity relative to density. They are perfect for aviation, automotive, and advanced manufacturing because they provide rigidity without adding much mass. However, they are cost-prohibitive and require precision fabrication methods. Their porous design also means they may need secondary barriers against humidity and heat transfer.

Mineral wool cores stand out for their superior flame retardancy and acoustic dampening. Often used in commercial buildings and industrial facilities, they meet stringent fire safety codes and retain strength during prolonged exposure to fire. While they are bulkier compared to EPS or PUR and offer lower thermal insulation per inch, they are indispensable in applications where fire protection and noise control are critical.

In choosing the optimal core, consider the environment the panel will be exposed to, the mechanical load expectations, thermal and acoustic needs, building codes and compliance standards, and cost constraints. For example, a industrial storage wall may benefit from XPS, while an aircraft interior would require the optimal performance of aluminum honeycomb. Validating performance in actual use scenarios and consulting with material engineers can help prevent design failures. An appropriately chosen core doesn’t just enhance efficiency—it can maximize the service life of the assembled unit.