icon turbotherm

icon turbotherm


Variothermie 4.0:
Precise & Efficient

Solutions for optimization of moulded parts:

  • ● Aesthetic Aspects
    • Weld lines and sink marks are eliminated.
    • Application of anti-reflection coating or lotus effects.
  • ● Physical Aspects
    • Reduced injection pressures.
    • Faster interlinking in two-component materials.
    • Possible use of complex polymers.
  • ● Mechanical Aspects
    • Strength is increased.
    • Possible manufacture of lighter components.
    • Materials with lower internal stresses.
  • ● Constructive Aspects
    • No Requirements for the tool making.
    • Procedure is subsequently applicable.

Solutions for efficiency:

  • ● Exact and precise pulsed heating
  • ● Quick temperature increase
  • ● Practical and easy handling
  • ● Stable und reproducible process
  • ● Low investment and operating costs

Your point of contact and specialist:


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Solutions for optimization of moulded parts:


  • Aesthetic Aspects

    ● Visibility of weld lines can be eliminated, so that either a ready-to-use part can be directly produced or a subsequent surface finish (e.g. PVD coating) can be directly applied.

    ● Moulding of the cavity surface by the liquid polymer is highly improved. Thus, microstructures such as anti-reflection coating or lotus effects can be applied.

    ● Also for foamed or fiber-reinforced parts a better surface quality can be produced.

    ● Sink marks are minimized or eliminated.

    Ohne Turbotherm
    Without TURBOTHERM®

    mit Turbotherm 400fach
    With TURBOTHERM® 400-fold

    Bindenahtgre m
    Weld line size (µm)

  • Physical Aspects

    ● Injection pressures can be reduced. Alternatively, a higher flow path / wall thickness ratio can be achieved.

    ● Quicker interlinking of two-component materials (e.g. Silicone)

    ● Cutting-edge complex polymers can be utilized, which often require specific processing conditions.

  • Mechanical Aspects

    ● By elimination of the visible weld line, i.e. the notch on the surface, the resulting strength can be increased as now there are no tension peaks in the notch root, wherefrom typically component failure is caused.

    ● Due to the possibility to implement lower wall thickness, in combination with the use of cutting-edge polymers, a more lightweight component, at the same strength, can be produced.

    ● Here, due to lower internal stresses within the material of the ready-to-use component, an improvement of the properties can also be achieved (e.g. an increase of flexibility and achievable number of bending operations before failure).

    ● By preheating of inserts the connection between insert and extruded polymer can be improved.

  • Constructive Aspects

    ● No requirements for tool making

    ● Procedure subsequently applicable


Solutions for efficiency:


  • Exact and precise pulsed heating

    ● Depending on the design the TURBOTHERM® technology makes it possible to heat only specific, strictly defined sections of the cavity surface.

  • Quick temperature increase

    ● Due to major difference in temperature between heating medium (air) and cavity surface (generally Steel) quicker heating is possible. This is additionally accelerated by the presence of high turbulences in the air flow due to geometrical methods in the heating area, which significantly increases the thermal transfer.

    ● Specific increase in temperature is strongly dependent on the surface finish in the heating zone. Typically, it amounts to 5-10 K/sec (at an air temperature of 600°C). Therefore, high-gloss polished surfaces heat up significantly slower (approx. 5K/sec) than grained/textured surfaces (approx. 10/sec).

    ● For further reduction of the necessary heating time the air temperature can also be increased to approx. 800°C.

    Temperaturverlauf in C

  • Practical and easy handling

    ● The TURBOTHERM® system consists of several components, which are connected by means of non-confusable piping. The respective components

    ● In operation there are only 3 parameters for specific setting of the respective application scenario. These are: Air temperature (°C), heating time (m.s.) and time delay bypass (ms).

  • Stable and reproducible process

    ● Following iterative determination of the respectively required parameters at the beginning of use, the process can be controlled by timing control of the heating time in a stable and absolutely reproducible way. Alternatively, the required heating time can be controlled by a sensor that is installed within the tool, e.g. to enable continuous documentation.

  • Low investment and operational costs

    ● Investment costs for a TURBOTHERM® system are significantly lower than those for a comparable alternative system.

    ● Operational costs of a TURBOTHERM® system are low by comparison, especially, if the area to be heated is of rather small dimensions (Ø >50mm). Then, our system on average requires a capacity of 1.4kW, regardless of the total size of the tool.

    Leistungsverlauf in W

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