Propylene Glycol: A synthetic liquid material that is absorbent in nature.Most ice packs contain some combination of the materials listed below: The exact material can vary depending on the type of ice pack and the manufacturing methods. Reusable ice packs contain a combination of materials that keep them cold and flexible. Each store’s version will be a little different, but they usually follow the same manufacturing process! Don’t forget to read the instructions to be sure you are using the pack properly. You can find ice packs at most grocery stores, convenience shops, or even gas stations. Some are even sent directly to doctor offices and surgery centers! The ice packs are packed for commercial shipping and are sent to stores and warehouses across the globe. Ice packs that don’t pass quality testing are deconstructed and repurposed so the gel can be used in future ice packs. This is one of the most important steps of the manufacturing process!Īll ice packs are inspected, tested, and squeezed to make sure there aren’t any tears or leakage. If there’s too much air inside, the pack can pop when it’s squeezed. The ice packs are vacuum sealed so all excess air is removed from the pack. This is usually done through pad printing, which involves a large stamp of ink getting pressed onto the plastic.Īfter the refrigerant gel is mixed and the packs have been assembled, they are ready to be put together! The gel is injected into the ice packs and sent to the vacuum sealer. The plastic casing of the ice packs are put together and stamped with usage instructions. The gel is then left to sit for about 1 hour so the ingredients fully bind together. The gel solution, which is a combination of water, dye, propylene glycol, hydroxyethyl cellulose, and vinyl-coated silica gel, is mixed in a giant mixer. Step Six: The ice packs are packaged and shipped to stores across the country.Step Five: Each ice pack is inspected for safety to ensure there are no leaks in the pouch.Step Four: The pouches are vacuum sealed using commercial-grade suction tools.Step Three: Once the refrigerant is fully combined and the packs are printed, the gel is then injected into plastic pouches. A logo may be added at this point as well.
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