Image Number 7 for United States Patent #8074470.
A cooling element with a sorption agent, that under vacuum can sorb a vapor-like working agent that evaporates from a liquid working agent in an evaporator and with a regulator organ in a working agent vapor channel between the sorption agent and the evaporator, wherein the entire cooling element is hermetically enclosed by a gas-tight multi-layer film, the multi-layer film has a flexible construction and is under vacuum so encloses the regulator organ, the working agent vapor channel and the evaporator, that the evaporator and the working agent vapor channel remain flexible and the working agent vapor can flow to the sorption agent only through the regulator organ.
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