Multiple layers: Corrugated cardboard consists of multiple layers of paper, which helps trap air and reduce heat transfer by conduction and convection. The air pockets created between the layers act as a barrier, slowing down the movement of heat.

Low thermal conductivity: Paper, the primary material used in corrugated cardboard, has a naturally low thermal conductivity. This means it resists the flow of heat, making it difficult for heat to pass through it easily.

Air pockets: The corrugated design creates numerous air pockets within the cardboard. These pockets serve as insulators by trapping still air, which is an effective barrier to heat transfer. The more flutes (the wavy parts) in the cardboard, the more air pockets there are, and the better the insulating properties.

Lightweight: Corrugated cardboard is lightweight compared to other insulating materials, making it easy to handle and install. Its low weight also reduces the overall weight of packaging and transportation, contributing to energy efficiency in logistics.

Cost-effectiveness: Corrugated cardboard is relatively inexpensive compared to other insulation materials. Its cost-effectiveness makes it a viable option for various industries, including packaging, construction, and manufacturing.

Recyclable and environmentally friendly: Corrugated cardboard is recyclable and biodegradable, contributing to sustainable packaging and environmental conservation. Its eco-friendly nature makes it a preferable choice for businesses and consumers who prioritize environmental responsibility.