2022.03.14
Therefore, when supplying air, try not to make the wind pressure too large, the bending radius should be as large as possible (to reduce collision resistance), the inner wall of the pipeline should be as smooth as possible, the pipeline should be a good electrical conductor to avoid static ignition, and the entire line must be grounded to avoid beads. If the particles are damaged, the air supply speed should not exceed 8m/s.
There is a certain amount of foaming agent and water vapor left in the beads pre-blown by the foaming mechanical equipment. When the power is turned on, it condenses into a liquid. The liquid foaming agent dissolves in the polystyrene, and negative pressure (partial vacuum) appears in the bubbles. The pressure in the bubbles drops immediately, and the beads are soft and easily deformed. Therefore, when supplying air, try not to make the wind pressure too large, the inner wall of the pipeline should be as smooth as possible, and the bending radius should be as large as possible (to reduce collision resistance). s, to avoid electric ignition in the use process of eps static foam machinery.
The beads that have just come out of the foam mechanical pre-expansion machine are all wet. After they are released from the pre-expansion machine, they absorb air and suddenly cool down, causing the foaming agent in the honeycomb foam cells to coagulate. It must be placed for a period of time after the hair is made. On the one hand, it is dry, and on the other hand, the negative pressure is eliminated by infiltrating air, and the internal pressure and external pressure in the foam pores are balanced.
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