Special filtration papers made of cellulose or glass submicron fibres with the required filter class are used as a filtration medium.
This filtration paper is folded into the required filter class. This filter paper is folded into a stable thread with the optimal number of folds and height with respect to the operating point of the filter. Hot-melt beads ensure not only stability of a compact fold structure, but also regular and parallel folds of the filtration medium and this allows a complete use of the filter area. Filter thread is sealed by sealant into the filter frame made of MDF board (pressed wooden fibres), equipped with a protective layer.
If the humidity-stable filter is required, it is possible to use a water-resistant plywood. On request, the frame can be made of the following materials –zinc-plated steel metal sheet, stainless steel metal sheet or aluminium metal sheet. Flat rubber sealing is standardly glued onto the inner side of the filter insert.
Filter inserts MULTIPLAN in filter classes F6, F7 and F9 are used especially as prefilters for highly efficient filter inserts, for which they ensure the appropriate conditions of their function and prolonged lifespan. The economical dimensions of filter inserts allow their mutual installation into filtration cabinets.
As prefilters in industries:
Filter inserts, various sizes