Annular filter element for rapid filtration - comprises ends joined by thermoplastic adhesive for sealing filter material folded in zigzag pattern, for easy automation

摘要

Element comprises filter material folded in a zigzag pattern with the ends sealed together. The ends are joined together by applied adhesive which is thermoplastic. Heating can be ultrasonic or the adhesive can be inserted by wire or joined metal foil and which is induction- or resistance-heated. ADVANTAGE - Fast, simple and easily automated