The manufacture of micro-components has always been the application of injection molding technology, however, a "magic" thermoforming process can produce high-quality micro-components. At the 16th Annual Meeting of SPE Thermoforming Technology, the micro-thermoforming process was discussed and the potential application potential of the process in the micro-electromechanical market was proposed. The technologies discussed at the same time include: “Chromium-like†TPO components, “four-sports station pistons†that reduce the molding cycle, and PD500 Mega cylinders that can quickly change molds.
Micro thermoforming technology
The Institute for Microstructure Technology of Forschungszentrum Karlsruhe, Germany, is a large government fund-based research institute. Researchers at the facility have developed a laboratory-scale thermoforming process that is said to be capable of forming micro-components between 0.1 and 1000 nm (1000 nm = 1 μm), meeting industry-standard microforming requirements for the first time. The process was developed to meet the needs of micro-components in the life sciences, such as disposable LOC microfluidic devices for the synthesis and analysis of biochemical reagents for pharmaceutical research.
As a microscopically improved technology, this new thermoforming system consists of three parts: a flat plate mold with a microcavity, a perforated platen for vacuum and air pressure, and a seal between the mold and the platen. facility. The process is to mount the mold on a laboratory press and then insert a piece of plastic film (20-50 μm) into the mold. After the press is closed, although the film between the mold and the platen is not compressed, a certain degree of vacuum is obtained. As the mold is completely closed, the film is compressed and heated. When the film reaches the thermal deformation temperature, it flows into the mold cavity under a pressure of about 50 bar. At this time, the mold has cooled to 20 ° C, low. The thermal deformation temperature of the material. As the air pressure drops, the mold opens and the micro-components are formed.
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