Abstract: A device seals an open end of monodose containers, which have already been filled with liquid or viscous solutions without need to trim the sealed ends, comprising grippers with jaws approximately shaped like a comb. In a first version, the jaws have square prongs counter opposed when the gripper is closed and a comb-shaped head inserted between the prongs of the jaws prevents formation of irregular edges at the ends which would otherwise require trimming. In a second version, one of the jaws has prongs which insert into corresponding recesses in the other jaw, while a flat-faced head closes the prongs of the gripper to prevent formation of irregular upper edges.

Abstract: The method provides for weighing, in a first weighing station the tare of a container, filling, in a supply station, such container with products, particularly liquid and/or gelatinous, or corrosive, or sticky products, or abrasive suspensions, etc., again weighing, in a second weighing station, the filled container, processing data coming from said weighing stations and data concerning the pressure and temperature of the products supplied, in order to determine a time of supply required for filling a subsequent container with a rated net weight of products within predetermined tolerances.