Gate design in injection molding of microfluidic components using process simulations

D. M. Marhöfer, G. Tosello, A. Islam, H. N. Hansen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

Just as in conventional injection molding of plastics, process simulations are an effective tool in the area of micro injection molding. They are applied in order to optimize and aid the design of the micro plastic part, the mold and the actual process. Available simulation software is actually made for macroscopic injection molding, but by means of the correct implementation and modelling strategy it can also be applied to micro plastic parts, as it is shown in the presented work. Process simulations are applied to two microfluidic devices (a micro distributor and a micro mixer) which shall be manufactured by micro injection molding. One of the main goals of the simulations is the investigation of the filling of the parts. Great emphasis is also on the optimization of selected gate designs for both parts which was successfully carried out. The paper describes how the two devices were meshed in the simulations software to obtain a proper simulation model and where the challenges arose. Subsequently, the simulation results are used to answer the question which gate design is the most appropriate with regard to the process window, polymer flow, and part quality. Finally, the limitations of the simulation results are critically discussed and possible improvements are described.
Original languageEnglish
Title of host publicationProceedings of the 4M/ICOMM2015 Conference
EditorsMassimiliano Annoni, Irene Fassi, Gloria J. Wiens, Stefan Dimov
PublisherResearch Publishing Services
Publication date2015
ISBN (Electronic)978-981-09-4609-8
DOIs
Publication statusPublished - 2015
Event4M/ICOMM2015 Conference - Milan, Italy
Duration: 31 Mar 20152 Apr 2015
http://www.4m-association.org/conference/2015

Conference

Conference4M/ICOMM2015 Conference
CountryItaly
CityMilan
Period31/03/201502/04/2015
Internet address

Keywords

  • Micro injection molding
  • Simulation
  • Meshing
  • Microfluidic system

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