Some food Vacuum Pouches packaging products will appear after the roll is not flat deformation and other issues, which will cause these phenomena will be why? How should we decide?
I believe there are many food manufacturers will be more or less encountered such a situation, in the plastic food Vacuum Pouches packaged products after the overall surface of the package curling, bag distortion, packaging is not flat, etc., the main cause of these problems What should we solve?
First of all to say that the main cause of packaging curling, deformation, etc.: 1, the surface layer of thin film heat resistance is poor; 2, the composite process of composite substrate tension control improper control, resulting in its aging stereotypes still have residual stress , Especially when the composite film thickness is thinner more prone to such failure; 3, composite film thickness inconsistency; 4, the cooling is not sufficient; 5, curing time is not enough; 6, in the longitudinal heat sealing knife part of the composite film running trajectory is not straight; 7, heat sealing temperature is too high or heat sealing time is too long;
And then we already know the reason should be made accordingly to adjust accordingly, Vacuum Pouches to avoid unnecessary losses, the following is our summary of some of the coping methods: 1, re-select the surface of the substrate film, remember not cheap choice 2, adjust the tension of the various parts of the composite processing equipment, try to make the composite phase of the two kinds of substrate retraction rate equal; 3, adjust the composite when the floating roller tension, so that the thickness of the same as possible; 4, full cooling; 6, the choice of low-temperature heat sealing with the sealing base material; 7 will be heat sealing temperature to adjust to the appropriate temperature.
The above is some of the reasons leading to food Vacuum Pouches will be curled after the product and some of the ways to solve the problem hope that the above will help to your place.