When the EPS foam material is molded, there is a dead material, which is usually caused by one of the following reasons:
1.Raw materials are of poor quality, containing too much impurities or moisture;
2.The heating temperature is too high or the heating time is too long caused by improper operation;
3.Improper proportion of blowing agent, accelerator or other additives.
The production process:
The final products is dead material.
The solution is as follows:
1.Check whether the raw materials meet the quality standards, and try to use high-quality raw materials;
2.Operate in strict accordance with the operating procedures to avoid excessive heating temperature or excessive heating time;
3.Add foaming agent, accelerator or other additives correctly according to the formula ratio provided by the manufacturer.
If there is a dead material, you can try the following methods:
1.Adjust the heating temperature or heating time, and try to re-foam;
2.Remove the dead material and add new EPS particles;
3.Use other methods, such as mechanical compression or thermoforming.
It should be noted that if the cause of the dead material is due to poor quality of raw materials or improper operation, it should be corrected in time to avoid similar problems.