I-Bar Sealer I- Bar sealer is specialized for wrapping the product and shrinking the film. Shrinkwrap helps to object and make your product tamper-proof. One just needs to put the roll of centerfold shrink film (PVC or Polyolefin) on the film roller and open it through the film separator. Then adjust the temperature according to the film. Place the packet in the film pocket and pull down the lever. The machine will automatically cut and seal the packet. Turn the packet and seal the other end as well. Now with the help of a heat gun, the product film will shrink and complete the packaging process.