Principle of Plastic Cooler Box- Zhejiang Zhengji Plastic Industry Co. ,ltd

Principle of Plastic Cooler Box

The principle of a plastic cooler box is based on the principles of thermodynamics, specifically the concept of heat transfer. The plastic cooler box is designed to keep the contents inside cool by minimizing the transfer of heat from the outside to the inside, and vice versa.

The plastic cooler box consists of several layers of materials, including an outer layer made of hard plastic, an inner layer made of insulating foam, and a lid that seals tightly to prevent air from entering or leaving the box. The insulating foam layer is typically made of expanded polystyrene (EPS), which is a lightweight, closed-cell foam that has excellent thermal insulation properties.

When the plastic cooler box is filled with ice or cold drinks, the insulating foam layer helps to keep the contents cool by reducing the transfer of heat from the outside to the inside. The foam layer works by trapping air in small pockets, which helps to slow down the movement of heat through the box. Additionally, the lid of the cooler box prevents warm air from entering the box and cool air from escaping, which also helps to keep the contents cool.

Overall, the principle of a plastic cooler box is to provide a well-insulated and sealed container that minimizes the transfer of heat, allowing for the contents to stay cool for an extended period of time.