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A sandwich panel is a composite structure consisting of three layers:
1 Top Skin (Outer Layer) – Made of PPGI, PPAL, Aluminum, or GI
2 Core Material (Insulation Layer) – Provides thermal & sound insulation
3 Bottom Skin (Inner Layer) – Same as the top skin or different material depending on use
Types of Sandwich Panels & Core Materials
PU (Polyurethane) Sandwich Panel
Excellent thermal insulation
Lightweight & fire-resistant
Commonly used in cold storage, warehouses, prefab buildings
PIR (Polyisocyanurate) Sandwich Panel
Enhanced fire resistance compared to PU
Ideal for fire-prone environments
EPS (Expanded Polystyrene) Sandwich Panel
Cost-effective & lightweight
Moderate thermal insulation
Used for temporary shelters, office partitions, and prefab buildings
Rockwool Sandwich Panel
Best fire resistance & sound insulation
Heavier but highly durable
Used for power plants, industrial buildings, and fire-rated structures
Applications of Sandwich Panels
Industrial & Commercial Buildings – Warehouses, factories, offices
Prefabricated Homes – Quick assembly structures
Cold Storage & Refrigeration Units – PU & PIR panels for temperature control
Partitions & Walls – Offices, modular spaces
