Insulation time of ice packs

Insulation time: Generally, the insulation time is around 4 hours (depending on the volume, temperature, and stability of the surrounding environment of the insulation object). A lunch box with good insulation can help delay the insulation time and increase the insulation time. The cold insulation time depends on the number of ice bags or ice boxes used, and the ice bags or ice boxes can also be replaced at a fixed time to achieve continuous cold insulation.