Utilized as both heat packs and cold ice packs, the Hero Lily 4 Ply 24 Cube Packs can be cut into smaller sizes. Our freezable ice packs utilize a revolutionary polymer technology that is effective enough to freeze these products to temperatures as cold as -190 degrees Celsius, which is twice as cold as dry ice. In comparison to dry ice, our shipping ice packs are approved by the FDA and certified as non-toxic. Mainly used for the one-way transportation of perishables including food, vaccines, pathology samples, and more, these cost-effective commercial ice packs will not leak like traditional ice packs. If you adjust the freezer is adjusted to its maximum setting, these food ice packs can be frozen between -18 degrees Celsius and -21 degrees Celsius.
- Hydrate your ice pack by submerging it underwater for 10 to 15 minutes. Keeping the ice packs fully submerged under water activates the polymer by hydrating the cells.
- While fully immersed in warm water, scrunch the sheets between your hands until all the air bubbles have escaped and the cells have begun hydrating.
- Once this is done, your ice packs are ready to use. Your Herolily ice sheets should start frozen and a gradual cold transfer will take place, which slowly transfers the cold energy from the ice packs into the perishables. You will note that the Herolily Ice cells still retain significant chill factor even in its softened state.