HOW IS THE HEAT PRODUCED? Bending or “clicking” the coin located in the liquid pad causes a reaction to occur which makes the liquid crystallize and this crystallization is what causes the heat to occur. Important note: After the liquid has crystallized make sure you massage the pad to make it soft and pliable. This will cause the pad to stay hot for the specified amount of time depending on its size. This crystallization ALWAYS occurs at a temperature of 54C (130° F). The pad will not activate if it is above this temperature. Once activated, the heating pad has available to it a predetermined amount of energy. It will use this energy to increase the temperature of the pad to 54 o C and use whatever is left to maintain that temperature. This ability to produce heat for a period of time is accomplished because all of the liquid does not crystallize immediately. Molecules that were not required to heat the pad to its maximum temperature will remain liquid, and crystallize as require
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