Use of an adhesive tape, in particular for adhering optoelectronic components

The adhesive tape comprises a foam layer and two adhesive layers on the outer side, where the foam layer is disposed between the upper and lower adhesive layers, and a multi-layered barrier film present between the adhesive layers. A further adhesive layer is directly disposed between the foam layer and the barrier film. The foam layer is formed by a polymer layer containing a foaming agent. The polymer layer is foamed by heat supply. The polymer layer containing the foaming agent has 50% of enlarged volumes after foaming. The barrier film has a layer thickness of 0.5-160 mu m. The adhesive tape comprises a foam layer and two adhesive layers on the outer side, where the foam layer is disposed between the upper and lower adhesive layers, and a multi-layered barrier film present between the adhesive layers. A further adhesive layer is directly disposed between the foam layer and the barrier film. The foam layer is formed by a polymer layer containing a foaming agent. The polymer layer is foamed by heat supply. The polymer layer containing the foaming agent has 50% of enlarged volumes after foaming. The barrier film has a layer thickness of 0.5-160 mu m and/or a water vapor transmission rate of less than 0.01 g/m 2>d. The foam layer, the foamable polymer layer or adhesive mass has a layer thickness of 100-3000 mu m after foaming. The barrier film in addition to a polymer film has a metal layer in the form of a metallic vapor, where the metal layer has a thickness of 20 nm to 25 mu m and is present between a first polymer layer and a second polymer layer. The barrier film has a prestretched polymer layer with a specific contact resistance of 10 1> 6> omega cm at 20[deg] C. Die vorliegende Erfindung betrifft ein Klebeband aufweisend eine Schaumstoffschicht und zwei Klebschichten auf der Außenseite, wobei die Schaumstoffschicht zwischen der oberen und der unteren Klebeschicht angeordnet ist. Es wird vorgeschlagen, dass zwischen den Klebstoffschichten zusätzlich eine Barrierefolie mit geringer Wasserdampfpermeation vorhanden ist. Die Barrierefolie besteht bevorzugt aus einer metallisierten Folie aus Polyester oder mono- bzw. biaxial verstrecktem Polyolefin.