Comparative investigation carried out with both modified fiber cloth – KYS-type FINESS and standard fiber cloth with homogeneous structure on the whole thickness – KYS-type PROGRSS showed essential differences in the performance of both types of material used for filtration of air containing very small dust particles. It was concluded that separation properties of that material are very good in relation to the number of particles in the air. The amount of dust particles in the air which flew through filtration bag made of fiber cloth covered with microfibers (KYS-type FINESS) is from two and a half up to three times smaller than in case of standard cloth. It is very advantageous as it guarantees compliance with strictest air cleanness requirements in the production halls. Very high air cleaning efficiency of clothes covered with microfibers allows for total freedom in designing and exploitation of closed air systems used in furniture factories.

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