How the gel heat pack works

How it works

  • The gel reusable heat pack contains a solution of Sodium Acetate (a form of Salt) in a sealed plastic bag.
  • On flexing the small metal disc inside the pad a molecular reaction is started causing the solution to crystallize.
  • Starting this chain reaction causes the entire solution to solidify.
  • During the reaction (from liquid to crystal form) energy is released in the form of heat.
  • Gradually the heat pad will start to cool down, returning to its original, solid state.

  • The time this takes is dependable on the size and model of the heat pad, however the process can be initiated and the pad re-used again and again. 

  • Please don't use the heat packs while pregnant!


Hits:    【Print
Pre:none     Next:What is Air activated hand warmers?