JBB50/5PUR is a five clamps PUR perfect binder ideally suited for short& medium run work with maximal speed up to1500. With the main characters such as stepless-speed regulation, PLC program control, PIO temperature control, overload protector etc., the workflow includes manual book-block feeding, automatic jogging, twice spine milling, notching, spine glue and side glue application, cover scoring, synchronically cover feeding and nipping, automatic delivering.