An indicator for the detection of the penetration of air - and / or humidity in a vacuum -, pressure - or protective gas package

摘要

An indicator (20) for the detection of the penetration of air - and / or humidity in a vacuum -, pressure - or protective gas, packaging, in particular in a vacuum insulation panel (10), wherein the penetrating air - and / or moisture content of a change in the physical properties of the indicator (20), characterized in that the indicator (20) with the penetrating air and / or moisture content of chemically reactive material and at least one physical property of the indicator (20) is variable by the chemical reaction.