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April
A certain amount of foaming agent and water vapor are retained in the pre-expanded beads of the foam machinery and equipment. When they are out of the machine, they condense into liquid, and the liquid foaming agent dissolves into polystyrene, so that the pressure in the bubbles is quickly reduced. , Negative pressure (partial vacuum) appears in the bubble, and the beads are very soft and easy to deform.
March
The structural characteristics of the foam molding machine are as follows
A certain amount of foaming agent and water vapor are retained in the pre-expanded beads of the foam machinery and equipment
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