An automatic molten substance bagging system which can fill a molten substance such as asphalt latex into a bag in a short period of time fully automatically without operation by hand. A bag is first supplied into a carrying can on a circulating conveyor system and is inflated with air. Then, the bag is filled rapidly with a fixed volume of a molten substance and then further filled moderately with the molten substance until a predetermined weight is reached. The thus filled up bag is sealed at a mouth thereof by a sewing machine, and finally a plurality of such filled up, sealed bags are transferred onto another conveyor for further processing while their carrying cans are left on the circulating conveyor system so as to repeat such a sequence of operations for further bags. |