“L” type sealing knife of anti-stick and high temperature alloy has neat sealing without cracking, no coking and no smoking. Sealing knife coated with Teflon non-stick layer for cutting non-stick film; After sealing and cutting, the product is automaticall conveyed to the shrinkage furnace by conveying belt for shrinkage packaging. Manual rocker is easy to adjust the height of convevyor belt; Accurate Control of Sealing Time by Time Relay; Sliding film support can be placed with various specifications of shrinkage film, smooth perforation device; The whole set of sealing and cutting action is automatically completed by the cylinder, which greatly reduces the work intendity and improves the production effciency.