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EPS pre-expanders are divided into two types: continuous and intermittent. No matter which pre-expander, EPS raw materials are added to the machine, and the EPS is foamed by steam heating. Obviously, various raw materials have different foaming ratios and foaming speeds. For various raw materials, its foaming ratio and foaming speed are inconsistent. For various types of pre-expanders, the foaming ratio can be controlled by adjusting various parameters.
The design should take into account factors such as cost control and molding speed; Material cost savings; Comparison of different schemes designed;
The design should provide convenience for subsequent manufacturing and marketing;
The packaging process mainly inspects the appearance of the product and wraps the product in plastic film.
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