What problems will be encountered in the production of ordinary zipper bags?

In the processing of ordinary zipper bags, the following four types of problems are often encountered:

1, the two ends of the zipper and the edge of the bag to cross the part of the "dead fold";

2, the two ends of the zipper and the edge sealing of the bag cross the part of the local delamination phenomenon;

3, the zipper and bag body sealing part is not smooth;

4, the zipper and bag body sealing part of the local delamination phenomenon;

The reasons for the above four types of problems are:

1, the local heat sealing head design is unreasonable (too small);

2, ultrasonic heat sealing device output power is insufficient or pressure is insufficient;

3, the hardness of silicone rubber pad is not suitable;

4. The local heat sealing rod design of zipper bag making machine is unreasonable, it is recommended to use ultrasonic heat sealing device;

5, the thermal shrinkage of the zipper itself is greater than the thermal shrinkage of the composite film;

6, the melting point of the zipper itself is greater than or equal to the melting point of the heat sealing film;

7, ink layer heat resistance is insufficient;

8. The section of the zipper buckle is too large;

For more information about ordinary zipper bags, you can consult aluminum foil bag manufacturer Weihua Packaging in detail.