1. Q: Why does the material tend to yellow when using a […]
1. Q: Why does the material tend to yellow when using a treatment agent ?
A: This is related to the material itself, the choice of treatment agent and the correct operation.
2. Q: Why do some parts of the shoes not eat glue when the finished shoes are inspected, and the parts that do not eat glue are not big but often appear?
A: This is related to whether the wipe is in place when using the treatment agent.
3. Q: Why do the materials that are in good condition have “opening” or “drawing” when they pass the oven?
A: This is related to whether the press is in place, the heat resistance of the glue, the crystallization condition and the choice of treatment agent.