Micro Injection Molding

With molded part weights from 1 to 10,000 milligrams, we serve a wide range of different part requirements in micro injection molding. Our extensive experience in one and two component injection molding technology, vertical micro injection molding and with a wide variety of materials enables application-oriented solutions of the highest quality from feasibility studies to series production. In injection molding it is important to plasticize only the smallest amounts of plastic in order to avoid thermal stress on the plastic melt, and then to inject these into the cavity with the highest precision. At this point, the screw-piston principle used up to now reaches its limits. The reason for this is that the diameter of the screw piston cannot be optimally adapted to small shot weights for mechanical stress reasons.

The KUZ developed a machine technology specially adapted for micro injection molding based on the principle of 2 piston plastification. The consistent design of the injection unit for very small shot weights, in conjunction with a servo-electric injection drive, makes it possible to control the filling phase for micro parts and thus increase the precision of the molding. This machine and mold concept makes it possible to design very small gating systems, so that shot weights down to 10 mg are no problem. This is complemented by a master mold concept that minimizes costs and effort.

The following special processes are possible at the KUZ:

• 2-component micro injection molding
• Powder Injection Molding (PIM), mainly ceramics (CIM)
• Liquid Injection Molding (LIM), silicone micro injection molding
• Elastomer processing for micro molded parts
• Micro injection molding
• Production of hybrid micro-molded parts, insert technology