The paper bag machine is a very used machine, and more and more are used now, but when you use the paper bag machine, I believe that many people have encountered the phenomenon of warping, so what is the reason for this? How to solve it? Let me give you a detailed explanation.
       1. The thickness of the paper bag material is not consistent.
        Solution: Adjust the tension of the floating roller.
       2. The heat-sealing temperature is too high or too hot or the heat-sealing time is too long, resulting in damage and wrinkling of the paper bag material.
        Solution: Adjust the heat-sealing temperature to a normal temperature.
       3. In the longitudinal heat-sealing knife part, the running track of the composite film is not straight.
        Solution: choose an inner sealing substrate with low temperature heat sealability.
       4. The heat resistance of the film in the composite material is poor.
        Solution: Reselect the surface substrate film.
       5. In the compounding process, the tension of the composite substrate is not properly controlled, resulting in residual stress after curing and curing, especially when the thickness of the composite film is thinner.

        Solution: Adjust the tension of each part of the composite processing equipment, and try to make the two kinds of composite substrates shrink equally.