New Horizons
At the forefront of injection molding technology (
thin-wall- oder
micro-injection molding)increasing demands are being placed on the machinery which, while technically possible, are no longer economical. For example, a thin-walled molding made from a high-flowing material with a long flow length-to-wall ratio of >500 can be produced. It can be done but it requires an extremely high injection rate. Another example might involve the production of an extremely small part using expensive material. It can be used with hot runner technology (without a sprue) with a shot weight of < 1 g. In both of these examples Barrel Compression Injection (BCI) can provide an effective alternative.
Putting Stored Energy to WorkWith barrel compression injection the machine is equipped with a shut-off nozzle. At the start of the injection process the shut-off nozzle remains closed. Pressure builds in front of the screw tip and the melt in the plasticising cylinder is pressurized. When a predetermined pressure has been reached, the nozzle is opened and the actual mold-filling process begins. The advantage of filling a thin-walled mold this way is that the acceleration of the pressurized melt is considerably greater because of the energy stored within it. This makes it possible to reach a higher flow front speed at the start of the filling process. The result: a shorter filling time or a longer flow length-to-wall ratio.
Extending the Applications Spectrum Barrel compression injection technology is available as an option for all Ferromatik machines (
MAXIMA,
ELEKTRA and
K-TEC). Retrofitting machines is also possible, allowing manufacturers to broaden the spectrum of applications available to them. Especially with the ELEKTRA
evolution this technology offers distinct advantages. Go to
application technology to learn how we can help you explore the benefits of barrel compression injection technology for your specific application needs.
