Laminate structures containing activatable materials
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United States of America Patent
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-
Aug 1, 2006
Grant Date -
Jun 26, 2003
app pub date -
Dec 20, 2001
filing date -
Dec 20, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A laminate structure (e.g., hot or cold wrap) formed from outer substrates that are bonded together to form at least one pocket is provided. The pocket is separated by an inner substrate such that the pocket defines an upper pocket region and a lower pocket region, each of which contains a reactant. Due to the presence of the inner substrate, the reactants do not intermix prior to activation of the laminate structure. To activate the laminate structure, a tension force is exerted so that the inner substrate ruptures, thereby allowing the reactants to freely intermix and produce the desired result. For example, in some instances, the reactants undergo and exothermic or endothermic reaction so that the laminate structure may be utilized as a hot or cold wrap.
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