Sonobond Ultrasonics has unveiled its Filter Collar Bonder. The new ultrasonic bonder is designed for attaching rigid plastic circular frames to nonwoven filter bags. It is ideal for low-production assembly of bag filters for chemical and industrial liquid applications. The Filter Collar Bonder is a single-module version of Sonobond’s award-winning, three-module RingMaster unit. It uses Sonobond’s exclusive SureWeld 20 technology and special tooling to ultrasonically attach rigid plastic collars to filtration media. This is accomplished without glue or stitching. The Filter Collar Bonder is able to assemble between 50 and 80 bags per hour.