Insulated double-layer corrugated cup

Insulated double-layer corrugated cups are widely used for takeaway services of hot beverages. Their structure consists of two layers of inner and outer cup walls, with an air gap in the middle. This design effectively reduces the conduction of heat through the cup wall and improves the insulation performance of the cup body. There is a certain gap between the inner and outer layers of the double-layer corrugated cup. This design slows down heat transfer through the low thermal conductivity of gas, thereby maintaining the temperature of the liquid inside the cup and avoiding overheating of the outer cup wall, ensuring that the user's hands are not burned. This design can effectively isolate heat and is more suitable for holding hot drinks than single-layer cups. Corrugated design can provide additional insulation, as the uneven structure of corrugated can increase airflow and further reduce heat transfer.