[Case Study] Color Change in Molding Foamed PP Using Hot Runner Molds

The resin cleaning agent [Selpurge] makes it very easy to clean hot runners, which has traditionally been difficult. It improves the efficiency of the color change process during molding.

"Serpaj" is a cleaning agent for injection molding machines and extruders that excels in color change for hot runners and removal of black spots. It can shorten setup times and reduce resin discharge volume and material loss. We present a successful case of color change in molding foamed PP using a hot runner mold. 【Molding Machine & Mold】 Mold: Mini Door Trim Test Mold (Valve Gate Hot Runner) Molded Product Weight: Approximately 295g Molding Machine: Ube Industries, Ltd. MD450S-IV Molding Material: Foamed PP MB used, color change from black to gray 【Results】 - The previous material was completely discharged in just 15 shots. - Replacement with the next material was completed in only 4 shots. - No touch-up processing was needed for molding the next material. - When changing color directly with the next material, residuals from the previous material did not disappear even after 60 shots. *If you would like a sample, please contact us or download the sample request form and feel free to apply via fax.

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