Poly (plastic) bag sealers use heat to “melt” the bag closed. Inpak Systems offers three types of commercial poly bag sealers: band sealers, jaw sealers and hot air sealers.   Band Sealers: Band sealers have two bands (belts), typically infused with PTFE to prevent sticking, that hold the top of the bag and carry it between heating elements which seal... Read more