Packing parameters effect on injection molding of polypropylene nanostructured surfaces

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In today´s industry, applications involving surface patterning of sub-μm to nanometer scale structures have shown a high growth potential. To investigate the injection molding capability of replicating sub-μm surface texture on a large scale area, a 30x80 mm2 tool insert with surface structures having a diameter of 500 nm was employed. The tool insert surface was produced using chemical-based-batch techniques such aluminum anodization and nickel electroplating. During the injection molding process, polypropylene (PP) was employed as material and packing phase parameters (packing time, packing pressure) were investigated. The replicated surface topographies were quantitatively characterized by atomic force microscopy using specific three-dimensional surface parameters and qualitatively inspected by scanning electron microscopy. Results showed that the degree of replication from the tool to the polymer part was mainly influenced by packing pressure level and distance from the gate.
Original languageEnglish
Title of host publicationProceedings of the 70th Annual Technical Conference & Exhibition
Number of pages6
Publication date2012
Publication statusPublished - 2012
Event70th Annual Technical Conference & Exhibition - Orlando, Florida, United States
Duration: 2 Apr 20124 Apr 2012


Conference70th Annual Technical Conference & Exhibition
CountryUnited States
CityOrlando, Florida

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