According to the data feedback from the market, some vacuum bag users have complained that the quality of vacuum bags produced by some plastic bag manufacturers is not good. The main performance is that the vacuum bags purchased are wrinkled. In order to let everyone know more about vacuum bags, the following Plastic net small series bring everyone to see the reasons that cause the vacuum bag to wrinkle, as follows:
1. The thickness of the substrate of the vacuum bag is not uniform, and the thickness difference is too large.
2. The substrate of the vacuum bag is unwound.
3. When the amount of glue is too much or insufficient, interlayer sliding will occur; uneven coating will also cause local wrinkles.
4. The adhesive is not dry enough, the residual solvent is too much, the adhesion is small, and the two substrates after the composite are displaced.
5. The composite film of the vacuum bag receives the roll without cooling or cooling enough, and the high temperature soft composite film is easy to wrinkle.
6, the composite pressure is not set properly.
7. The tension is not properly controlled, and the tension of the loading and winding is not coordinated and does not match.
8. The surface of each guide roller is not clean, there is foreign matter sticking, or the surface of the guide roller is not flat, there are pits, scribes, bumps, etc.
The above is the entire contents of the vacuum bag wrinkling that Jiuzhi Plastics Co., let us know. If you want to know more about vacuum bags, you can pay attention to Jiuzhi Plastics.
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