Sandwich panel
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A sandwich panel is any structure made of three layers: a low-density core, and a thin skin-layer bonded to each side. Sandwich panels are used in applications where a combination of high structural rigidity and low weight is required.
Epcot's Spaceship Earth is an example of the use of ACP in architecture. It is a geodesic sphere composed of 11,324 ACP tiles.
Construction site panel made of aluminium composite material (Dibond)
Detail view of construction site panel
The catastrophic Grenfell Tower Fire, which killed 72 people, was partially attributed to the flammability of the sandwich panel cladding used in the building.
Structural insulated panel
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A structural insulated panel, or structural insulating panel, (SIP), is a form of sandwich panel used in the construction industry.
SIPs are most commonly made of OSB panels sandwiched around a foam core made of polystyrene.
Standard OSB with EPS-core structural insulated panel