By injection method there are produced filtering elements of panel type air filters with application of synthetic non-woven material.

Thanks to such technology, namely priming of the non-woven partition in rigid frame with plastic, filter has very good rigidity and stable overall dimensions.

Synthetic fibers have excellent filtering properties and their absorbing capacity is much higher than filtering paper on cellulose base has. So filtering elements based on synthetic non-woven material could have considerably smaller sizes with prolonged exploitation period.