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Hot Embossing by Matthias Worgull

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2.2. Micro Reaction Injection Molding (RIM)

Reaction molding technology is one of the established replication technologies on a macroscopic scale. For example, polyurethane reaction injection molding was developed in the late 1960s by Bayer AG. Besides the development of this technology for a wide range of polymers and applications, micro reaction injection molding was developed at Karlsruhe research center at the end of the 1980s as part of the LIGA (Lithographie, Galvanik Abformung; German acronym for the process steps lithography, electroplating, and replication) process [14].

2.2.1. Process

This process is characterized by an injection and mixing step of two or more components of a polymer and finally a polymerization of these components ...

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