Exo-thermic heat transfer

Abstract From the Canadian patent

The Abstract of the Disclosure, Apparatus for heating a packaged food product or other product required at the time of use to be heated from ambient to an elevated temperature comprising a thermally insulative enclosed housing; at least the upper portion of which is of flexible construction; at least one rupturable container disposed within said housing; a composition comprising a particulate primer material which is exothermic when contacted by liquid a particulate inorganic, oxide or salt which is highly exothermic when contacted by liquid and a film-, forming component encapsulating said primer and said inorganic oxide or salt; a supply of liquid; impermeable means normally separating …