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Hi there the ice pack is like a liquid container is made form plastic and shaped in a mold . The liquid is then added into the pack , not to much or if it freezes and expands it could burst the pack.Then it gets sealed on the factory line with a plastic cap.

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14y ago
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15y ago

It's simple really. Take a cup of water and put one or two drops of blue dye in it. Then freeze the blue water until frozen as ice. You can also put the water in an ice tray to freeze it.

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Wiki User

13y ago

Blue ice

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Q: How are blue ice ice packs made?
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