Seal cleaner and process for soluble unit dose pouches containing granular composition

An apparatus comprising:

• a plurality of individual forming pockets spaced apart from one another in a machine direction and moveable in said machine direction, each said individual forming pocket having a longitudinal axis and a pair of transverse edges on opposing sides of said longitudinal axis;
• a chamber spaced apart from said individual forming pockets, wherein said chamber has an open slot oriented towards at least one of said individual forming pockets during operation of said apparatus, wherein said slot is at least as laterally extensive away from said longitudinal axis as said transverse edges of said individual forming pockets;
• a plurality of individual pocket caps within said chamber spaced apart from one another and moveable in said machine direction across said slot, wherein said apparatus is configured such that during operations at least one of said individual pocket caps is operatively coupled with a respective one of said individual forming pockets at a time, and said individual pocket caps move in registration with said individual forming pockets;
• and an airflow generator in fluid communication with said chamber.