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This project has received funding from the European Union’s Seventh Framework Programme for research, technological development and demonstration under grant agreement no 608843.

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The 4M2020 Open Innovation Portal has been set up to assist the Micro and Nano Manufacturing Community to develop a pro-active, collaborative environment. The portal can be used to support the development of three types of collaboration. We invite you to submit information in the following categories for organisations that are: • Developing state-of-the art products and services and are providing their expertise to external organisations (Product and Services Offering) • Looking for specific expertise and capability from other organisations (Product and Services Sought) • Wishing to collaborate in new projects and are looking for potential partners (Partner Search)
  1. Marhöfer, DM
  2. Production & Manufacturing
  3. Wednesday, February 17 2016, 04:40 PM
  4.  Subscribe via email

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.

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