Wittmann Battenfeld will produce a micro support ring with a silicone membrane in hall 14, booth A20 to demonstrate its expertise in the field of liquid silicone processing at this year’s Compamed.
Laying out injection moulding machines for liquid silicone processing has a long tradition at Wittmann Battenfeld. This type of technology has been used for many years on conventional machines and on the MicroPower, a machine specially designed for micro parts injection moulding.
On this machine, thermally homogeneous melt is injected via a two-step screw-and-plunger injection unit, with shot volumes ranging from just a few mm³ to 4 cm3. In this way, it has become possible to make top-quality parts in a stable production process and with short cycle times.
The multi-component version of the MicroPower, known as MicroPower Combimould, is equipped with two horizontally positioned injection aggregates and a rotary disk integrated in the machine. The rotary disk takes care of turning the part towards the second injection unit and back. The machine is also laid out for cleanroom injection moulding. Its rotary disk is completely encapsulated. All connections for heating aggregates, temperature sensors, water tempering, core pull pneumatics and sensors, as well as the blow-through valve, are installed close to the rotary disk. The resulting short connection lines to the mould enhance the machine’s user friendliness.
At Compamed, Wittmann Battenfeld will demonstrate its know-how in the field of LSR processing in micro part production by manufacturing a support ring with a silicone membrane from PC and LSR on a MicroPower15/10H/10H COMBIMOULD. The materials to be used for this purpose are polycarbonate (Macrolon) from Covestro and a self-adhesive LSR (Silopren) supplied by Momentive. The mould has been constructed in co-operation with Nexus. The LSR metering device comes from Nexus and is equipped with a new Servomix liquid dosing unit for LSR with an OPC-UA interface (Euromap 82.3).
