Device for the automatic regulation of the quantity of adhesive deposited in flexible film rolling machines

摘要

A device for the automatic regulation of the quantity of adhesive deposited in flexible film rolling machines (20). These machines (20) include a coating column (21) and a bonding column (22), joined to each other by an upper frame (23); the premixed adhesive is loaded in a container (32), which is provided in a space formed between two adjacent cylinders (13, 14) and carried by the motion of two intermediate cylinders (13, 12) to a cylinder (15) designed to drag along the film (31). In this device, the adhesive is fed in a continuous manner from an automatic mixer (40), so as to vary the quantity dispensed per unit time depending on the basic pre-established weight and on the instantaneous speed of the rolling machine, the speed of the intermediate cylinders (12, 13) is varied automatically to increase or decrease the volume of adhesive laid down on the film (31).