ADHESIVE TAPE, PARTICULARLY FOR BONDING OPTOELECTRONIC COMPONENTS

摘要

#CMT# #/CMT# 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. #CMT# : #/CMT# 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. #CMT#USE : #/CMT# Adhesive tape for adhering optoelectronic components such as photovoltaic laminate in the frame of a photovoltaic module (claimed). #CMT#ADVANTAGE : #/CMT# The adhesive tape can be economically and easily manufactured, can be simply applied with high barrier effect, ensures good protection of the laminate edge against the penetration of water/water vapor, and achieves better sealing of sensitive goods against dust and liquids. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The diagram shows a schematic representation of a test laminate for the determination of the conductivity. 1 : Laminate 2 : Glass layer 3, 4 : Ethylene vinyl acetate film 5 : Aluminum film 7 : Frame. #CMT#ORGANIC CHEMISTRY : #/CMT# Preferred Components: The polymer layer consists of homo-, co- or terpolymer of ethylene or propylene.