The Concept of Web Sealing is the most widely accepted concept the world over. It is used for various size packs, heavy in nature and mostly for batch production. Unlike the L-Sealer here the film consumption per pack and hence cost of film per pack is less. A Combination of Front and Side Sealer together is also available called the Partial U-Sealer Tunnel. Here the pack is sealed with film from all the sides before the Shrinking Stage.