The continuous band sealer machine guides the upper portion of each bag via the sealing process by PTFE Or Teflon bands. It can seal any thermoplastic material including polyethylene, polypropylene and laminations with foils. Continuous Band Sealer will rapidly and strongly seal a number of different bag materials, providing outstanding strength, greater visual appeal and reliable pe... http://www.trigonind.com/continuous-band-sealers.php