FTM is the market leading Australian manufacturer of the complete range of filter bags. Whether you have a Pulse-Jet, Plenum Pulse, Reverse air, Shaker or envelope style system, FTM can fabricate a bag to suit your needs.

Depth vs Surface Filtration
Traditional (non-membrane) filter media rely on depth filtration. Conventional in depth filter media allows some dust particles to escape through the material, particularly during the cleaning cycle. Their efficiency is dependent on the formation of a primary dust cake just below and on the surface of the material. Over time, the fabric becomes plugged or blinded, making it harder to maintain consistent gas flow rates. Even worse, a depth filter can still allow particles to eventually pass through completely.

Gore membrane filter bags offer surface filtration, providing maximum efficiency with minimum pressure drop. The Gore membrane acts as the primary dust cake and positively prevents emissions, even during the cleaning cycle. It also prevents any dust particles from entering the membrane backing material. Gore fabrics approach 100% efficiency at submicron levels by collecting all particulate on the membrane surface. With its superior cake release, the filtering process achieves lower pressure drops after each cleaning cycle and lower average pressure drop over the life of the bag.

Advantages over other materials Superior cake release Consistently higher gas flow High filtration efficiency and near zero emissions Resistance to membrane damage Increased production Lower fan energy cost Lower differential pressure Increased bag life Lower maintenance cost resulting from less frequent bag changes. Due to the fine pore structure of the Gore membrane, the permeability of Gore bags is lower than that of conventional media.

Consequently the initial pressure drop is slightly higher than that of conventional filter bags. However, the release characteristics exhibited by the Gore membrane allows operation at near clean bag conditions, which ensures maximum suction at all times. Gore membrane filter bags are suitable for all bag filters which utilise pulse jet, reverse air, shaker or vibratory cleaning mechanisms.

GORE® and GORE™  is a registered trademark of W.L.Gore and Associates Inc