Common ice packs are filled with polymer materials and water. As long as the seal is not broken, it can be recycled. The thermal insulation effect of the ice pack is determined by the purity of the internal gel polymer, water proportion and other factors. If the ice pack is damaged, wash the contact skin in time. CMC is a commonly used bio-friendly macromolecule in the ice pack, which will not harm the human body.

During the reuse process, it is necessary to pay attention to the integrity of the outer bag and clean without stains. After freezing the ice bag in the refrigerator, it can be reused.