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Extrusion Foaming System for Fabricating OpenCell Structure
compounding extruder

Low Density Polyethylene foam of open-cell type was manufactured through extrusion foaming system using a physical blowing agent for the application of sound absorption. For the intended purpose of enhancing the available cell content, salt powder was blended with LDPE changing the particle and content size. Scanning electron microscopy research was completed in order to observe the cell morphology. With a check out to characterizing the open-cell structure, open-cell content and expansion ratio were measured with extruded foams. Finally the result of formulation and processing parameters on cell morphology was investigated.

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