| 摘要 |
A thermal pack holding a pair of mixable components, one of which is flowable, to produce a desired exothermic or endothermic reaction is disclosed. The pack is formed of a flexible sheet having two compartments, one for each of the components, separated by a frangible barrier arranged to be broken to enable the components to mix. In one embodiment the pack includes a pair of pull tabs to enable the user to break the frangible barrier. In another embodiment the pack is folded, with the compartments juxtaposed with respect to each other, whereupon the application of pressure to the pack causes the flowable material to apply pressure to the frangible barrier to cause it to rupture.
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