Quality sealing machine in coimbatore Band Sealing Machines are used for increasing production speeds in semi-automatic bag sealing applications, seal where automation is not possible. They securely seal a large range of bag materials by creating a wide seal of superior strength and appeal.Sealer operation is extremely simple as the operator needs only to feed bags into the machine. The filled bags rest on a motorized conveyor belt while the top of the bag is carefully guided through the sealing process by PTFE Bands.