A certain amount of foaming agent and water vapor are retained in the beads after the foam mechanical equipment is released.
When the machine is released, it condenses into liquid, and the liquid foaming agent is dissolved in polystyrene so that the pressure in the bubble decreases rapidly.
Negative pressure (partial vacuum) occurs in the bubble, and the beads are very soft and changeable. Therefore, during the air supply, try not to make the air pressure too large, the inner wall of the air duct should be as smooth as possible, and the bending radius should be as large as possible (to reduce the collision resistance).
The pipeline should be a good conductor of electricity, and the whole line must be grounded to avoid static ignition, and the transmission speed should not exceed 8m / s, so as to avoid bead damage.