This is because the oil fume has been refluxed.

under normal circumstances, high-quality styrofoam will not be baked. It has excellent temperature resistance and belongs to a low-density elastomer. At the same time, it also has waterproof, flame retardant and other characteristics, and it is also good in cushioning performance. But if it is poor quality styrofoam, it may be baked, because the quality is not up to standard and the performance is definitely not good.

Precautions in the use of styrofoam

1. Styrofoam is a kind of solidified material, and it only needs to be sprayed on the designated position during use. However, in the process of use, it is still necessary to pay attention to the use environment. If the place where the foaming material is sprayed is wet, the curing time will be shorter and the best effect can be achieved, so it is necessary to maintain a certain humidity at the grassroots level.

2. After the foam is used up, it needs to be protected on its surface when it is completely fixed, which can better protect the polyurethane foam from being damaged. Because in daily life, when the cured foaming material is exposed to strong ultraviolet radiation, it is easy to appear yellowing on the surface, and maintenance is also very troublesome.

3. If the material tank needs to be replaced later, the prepared new tank needs to be shaken evenly. When unloading the empty tank, it should be noted that this process needs to be completed as soon as possible, so as to avoid the solidification of the spray gun interface. When the spray gun is used, it is necessary to close the flow valve in time to avoid waste.