A vacuum defoaming machine is a device specifically designed for industries with high requirements for bubble removal, such as LED epoxy resin, LED lighting fixtures, plastic toys, and others. Its main principle is to establish a vacuum environment to expel bubbles from the material, thereby improving product quality and appearance.

The working process of a vacuum defoaming machine mainly includes the following steps:

Firstly, place the materials that need to be processed inside the heating chamber of the vacuum defoaming machine. The temperature inside the heating chamber can be adjusted according to different materials and requirements.

Next, close the door of the heating chamber and start the vacuum pump to begin extracting air. As air is removed, the pressure inside the heating chamber gradually decreases, forming a negative pressure environment.

In the negative pressure environment, due to the pressure difference between the gas molecules in the material and the surrounding environment, bubbles will gradually expand and detach from the material. At the same time, the temperature inside the heating chamber will also accelerate the movement and removal of bubbles.

When the bubbles are completely removed, the vacuum defoaming machine will stop extracting air and return to atmospheric pressure. At this point, the product has been rid of most bubbles, resulting in a significant improvement in quality and appearance.

Finally, open the door of the heating chamber and remove the processed product. Depending on requirements, further processing steps such as curing and painting can also be carried out.

In summary, a vacuum defoaming machine expels bubbles from materials by establishing a vacuum environment and utilizing pressure difference and temperature effects, thereby enhancing product quality and appearance. It plays an important role in industries such as LED epoxy resin, LED lighting fixtures, plastic toys, and others.