How do industrial insulated doors achieve their insulation effect?

Core Insulation Principles

Filling with high-efficiency insulation core materialsThe door body is filled with insulation materials such as polyurethane foam. These materials have extremely low thermal conductivity. They can effectively block heat transfer and reduce heat exchange between the two sides of the door.

Adopting a multi-layer composite structureThe door body generally adopts a three-layer composite structure of steel plate + insulation core material + steel plate. The panels are usually made of color steel plates, aluminum alloy plates and other materials. They can protect the internal core material and further reduce heat transfer.

Implementing comprehensive sealing treatmentSealing strips are installed around the door. Common types include rubber strips and silicone strips. These sealing strips fill the gaps between the door body and the door frame. They prevent cold air infiltration and hot air loss. Some high-end insulated doors also feature sealing treatment at the splicing joints of door panels.w do industrial insulated doors achieve their insulation effect?