The nucleation of gas bubbles in extrusion foaming of high-pressure polyethylene is known as. Experiments display that undissolved gas microbubbles in the solution being foamed can have a significant effect on the number density of pores in the foam. A simple model for estimating the real number density of supercritical nuclei is proposed. The effect of that time period of mixing of plastic extrusion machines gas and polymer in the extruder, the talc concentration, and the geometric features of the nozzle on the number density of pores in the foam can be analyzed.
plausibleancest06 Community Member 
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