How Long Can Spacer Bars – Filled with Desiccant – Be Exposed to Ambient Air?

Horst Thamm

The water ingress into spacer bars filled with desiccant and stored in ambient air has been experimentally determined. The influence of the following parameters has been investigated: profile type, temperature / humidity of the ambient air, desiccant type and type of frame construction. It is shown in which cases the storage of filled spacer bar frames may lead to critical losses of the water adsorption capacity of the desiccant.

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