Abstract: A heater device for heating objects, including a compartment having a heat generating material and a second compartment having an activation material to generate heat upon mutual contact. The compartments are adapted to present a heating surface to the object to be heated. A divider is positioned in the compartments forming a barrier to maintain separation between reaction components until opened by an opening member positioned in alignment with the divider. An access element is movable into contact with the barrier to permit a heat generating reaction there between.

Abstract: A device for activating a two component reaction system where the two reaction component are in separate containers with one container inside the other. A pressure differential between the pressure in the inner and outer containers is made so the inner container has the higher pressure. The inner container has a line around at least one part of the inner container and extends through the outer container. The line is aligned to tear the container when it is pulled.