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Sandwich metal sheet products showing high peel test values

In composite plates consisting of metal outer layers and a polymer inner layer, the adhesion strength between the layers is very important. This influences directly the stiffness and rigidity of the composite sheet. Therefore, adhesion promoting layers are typically coated on the inner side of the metal layers. It has been noticed however, that the bond strength can be further improved, so that complex shaped parts can be produced without the risk of delamination.
Based on VITO expertise in plasma surface activation, a method was developed for manufacturing sandwich metal sheets, in an economical way, showing high peel test values.

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