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A planetary centrifugal mixer is a device for mixing and degassing materials simultaneously without the use of agitator blades.

The two varieties of planetary centrifugal mixers are called atmospheric-pressure type and vacuum type. Bubbles often cause difficulties during the mixing process, and, in such cases, one of these mixers can be used depending on the individual situation. The atmospheric-pressure type mixer removes air bubbles visible to the naked eye of several hundred microns order.

The vacuum type mixer is used for the removal of invisible micron-sized bubbles. Traditionally, deaeration is accomplished with a desiccator once mixing has taken place. Carrying out this process is time-consuming. However, the planetary centrifugal mixer enables deaeration while mixing without any overflow, which reduces the length of time it takes.

Deaeration by atmospheric pressure type planetary centrifugal mixer is suitable for materials with relatively low viscosity. A “deaeration mode” is present on the majority of atmospheric-pressure type mixers, and by altering the balance between revolution speed and rotation speed, deaeration can be achieved when based on these two principles:

The planetary centrifugal mixer does not need mixing blades to mix materials and deaerate materials at the same time.

To achieve this, there are three key factors to consider.

Additionally, the flow velocity (direction) changes rapidly between the liquid surface and the container wall, resulting in complex flow and a strong shearing force. In particular, the strong shearing force causes droplets and particles to become smaller and enhances their dispersibility. Air bubbles are also finely dispersed during this process.

Because of this, it is possible to mix even high-viscosity materials uniformly, even in a short time frame without the use of mixing blades.

Defoaming occurs based on the three principles below:

THINKY Corporation has introduced a planetary centrifugal mixer called “THINKY MIXER” ARE-310.The product is the standard model of the THINKY MIXER series.

High-viscosity materials can be simultaneously mixed, dispersed, and deaerated with this mixer. It has a deaeration mode enabling high-precision deaeration. The new model establishes superior performance in the deaeration of high-viscosity materials and adhesives where viscosities have been increased by added fillers.

This information has been sourced, reviewed and adapted from materials provided by Thinky Corporation.

For more information on this source, please visit Thinky Corporation.

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