Flat Bottom Bags: Innovation and Sustainability in the Packaging Industry
Food packaging manufacturer: vacuum bags why wrinkle?
by：Kolysen
2020-12-21
Packing: packed in vacuum bags why wrinkles?
Cause analysis: 1, base material thickness is not uniform, thin films are too big.
2, base material roll deflection.
3, excessive or insufficient amount of glue in the, interlayer sliding occurs;
Uneven glue can also cause the occurrence of local buckling.
4 not fully dry, adhesives, residual solvent is too much, stick relay is small, compound after two base material to produce displacement.
5, composite film composite membrane winding directly, without enough cooling or cooling high temperature soft composite membrane wrinkle easily.
6, tension of composite pressure Settings.
7, tension control, put, winding tension not harmonious, don't match.
8, the guide roller is not parallel.
9, the guide roller surface is not clean, stick with foreign body, or guide roller surface is not flat, there are potholes, his word, bruising, etc.
Vacuum packing bag wrinkle solutions: 1, change the quality of qualified film.
2, the position of the adjust film, make its deflection does not occur in the process of transmission.
3, adjust the amount of glue, and uniform coating.
4, adjusting process parameters, the adhesive can be fully dry, reduce residual solvents.
5, composite film shall be carried out in a first after sufficient cooling again winding.
6, composite pressure adjustment.
7 to adjust volume and winding tension, make each part of the tension match each other.
8, adjust the parallelism of the guide roller.
9, clean the surface of guide rod, replace the damaged guide rod, ensure the guide roller surface level off, smooth, clean.
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