Firstly, the principle of foaming is explained theoretically. Foamed plastic variety, use is very wide, its molding method and common plastic molding method is similar, but in the molding process of foamed plastic, in the plastic melt to appear a large number of even bubbles, bubbles have to undergo expansion and solidification process, it will be affected by the molding process.

Firstly, the principle of foaming is explained theoretically. Foamed plastic variety, use is very wide, its molding method and common plastic molding method is similar, but in the molding process of foamed plastic, in the plastic melt to appear a large number of even bubbles, bubbles have to undergo expansion and solidification process, it will be affected by the molding process.

When the mechanism is complex, theoretical research often makes use of phenomenology to observe and analyze a large number of objective processes through experiment and practice, find out rules, and then make theoretical analysis to find the internal relationship, and propose a mathematical model that can express the foaming behavior. Most mathematical models of complex mechanisms involve some multivariate variables, which are difficult to be directly applied. However, they are difficult to be directly applied as theoretical variables in qualitative analysis, but they are of great value as theoretical basis for qualitative analysis.

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