The Optimal Answer to Products of High Viscosity and Complex Rheology
Our solutions allow to manufacture preparations with complex rheology that can go beyond flowability. Rendering, dispersions, emulsions, incorporations of solids in a single mix without any transfer or intermediary phase are now possible.
The aim is not only to mix several ingredients, but also to texture the final product (alignment of fibres). To do so, the lengthening, shearing, recombining cycle needs to be repeated in order to obtain the desired quality of mixing.
3 Complementary Agitations: Versatility and Efficiency
Central Agitation for the Flow
Central agitation creates an axial flow inside the bowl that is sufficient to obtain perfect homogeneity.
With a high flow rate without any shearing effect, it allows the mixing of fragile products such as mother-of-pearl.
Peripheral Agitation to Guarantee Homogenization and Heat Transfer
Peripheral agitation facilitates the raising of products and improves the homogenization inside the bowl, especially in the case of shear-softening products.
Heat transfer in the bowl wall is facilitated thanks to a high peripheral speed. The peripheral agitation allows to introduce active ingredients at the end of production, and especially products with high viscosity.
Bowl-Bottom Agitation for Dispersion or Emulsion
Bowl-bottom agitation helps get fine emulsions thanks to a sufficient input of energy in the system to reduce the size of drops.
Important shearing rates, combined with a good lengthening of drops allow to obtain particles that can be smaller than one micron. The serrated rotor design allows to reduce the emulsion time since particles pass more frequently through the air gap.
Introduction of Raw Materials Under Vacuum in the Emulsifier
Many processes to manufacture cosmetics, pharmaceutical or chemical products involve the dispersion of solid materials in the form of powders during liquid or pasty phases.
The most common tool to ensure those emulsions is the simple or double-cage rotor stator. VMI has developed a major innovation allowing the introduction under vacuum of powders directly in the core of the emulsifier. Thus, the dispersions and emulsions are of much higher quality.
- Immediate dispersion of powders as soon as they are introduced without any risk of agglomeration
- Reduced risk of passing through the liquid phase
- Accelerated introduction flow of powders
- Improved capacity of production
Ease of Cleaning
- Absence of recirculation piping
- Absence of retention zones
- Limitation of product projections to the top of the bowl
Hot / Cold Process
- System to make an emulsion of a cold phase into a hot phase