Choosing an appropriate core to maximize panel performance is essential to ensuring the final product meets performance requirements while keeping expenses low and lightweight. Sandwich panels consist of two thin, strong face sheets bonded to a robust yet weight-optimized interior core, and the central filler plays a key role in determining stiffness, insulation, weight, and کانکس ساندویچ پانل durability.

Polyurethane cores are widely adopted in industrial and HVAC applications due to their outstanding R-value performance and excellent adhesion to facings. They offer resistance to deformation under pressure and are often used where thermal performance is critical. However, they can be prone to softening under extreme heat and may produce hazardous smoke unless treated with flame retardants.

Polystyrene, available in expanded or extruded forms is widely used because it is low-cost, easy to fabricate, and provides strong humidity protection. It is frequently found in shipping containers and modular builds but lacks the thermal performance and fire resistance of polyurethane. XPS has enhanced strength and rigidity than Foamed PS, making it a better choice for load bearing applications.

Honeycomb cores, typically made from metallic, paper-based, or polymer substrates, offer outstanding stiffness per unit mass. They are ideal for aerospace, transportation, and high performance industrial uses because they provide structural stability with minimal added weight. However, they are cost-prohibitive and require precision fabrication methods. Their porous design also means they may need coatings or encapsulation to enhance insulation performance.

Fibrous mineral insulation cores stand out for their fire resistance and sound absorption. Often used in offices, hospitals, and manufacturing plants, they fulfill mandatory safety standards and maintain structural integrity under high heat. While they are heavier than foam cores and offer reduced R-value per thickness, they are essential in applications where occupant safety and comfort are paramount.

In choosing the optimal core, consider the environment the panel will be exposed to, the required load capacity, insulation and soundproofing requirements, fire safety regulations, and budget. For example, a warehouse wall may benefit from economical EPS, while an aerospace component would require the optimal performance of aluminum honeycomb. Conducting field trials and environmental simulations and collaborating with structural analysts can help eliminate premature system degradation. The optimal selected core doesn’t just boost functionality—it can maximize the service life of the assembled unit.