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.
|Title of host publication||Proceedings of the 70th Annual Technical Conference & Exhibition|
|Number of pages||6|
|Publication status||Published - 2012|
|Event||70th Annual Technical Conference & Exhibition - Orlando, Florida, United States|
Duration: 2 Apr 2012 → 4 Apr 2012
|Conference||70th Annual Technical Conference & Exhibition|
|Period||02/04/2012 → 04/04/2012|