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April
During the curing process of the EPS automatic air-cooling block molding machine, the beads are cooled by air, and the foaming agent and water vapor in the pores of the cells are condensed into a liquid, so that a vacuum is formed in the cells. At the same time, air permeates into the interior of the cell through the cell membrane, so that the pressure in the cell is balanced with the external pressure. This will make the beads after the pre-expansion elastic. During the ripening storage process, the foaming agent also diffuses outward at the same time, so the shelf life of the beads after the pre-expansion cannot be too long.
March
EPS is produced in a three stage process
From the shutdown at 8 o’clock yesterday evening to the current 12 o’clock, the vacuum negative pressure is still guaranteed to be around minus six. One 11 kW vacuum pump is equipped with five machines, and the negative pressure does not fluctuate.
It is reported that the accident occurred at 06:00 UTC yesterday (March 23) UTC, and the stranded location was located in the northern part of the Suez Canal. According to the feedback on the scene, when the giant EVER GIVEN with a capacity of more than 203.8 million Teu just entered the channel Soon, the stranding accident happened.
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