How can substances such as emulsion paints, coatings, reaction resins, fillers and cement be stirred evenly in little time or perfectly mixed? This is the central question in mixing technology.
Ensuring quality when stirring up the mix is always important so that the technical material characteristics, e.g. flow characteristics, smoothness and drying behavior, can develop properly. It goes without saying that efficiency also plays a key role in the area of mixing technology. Today, larger quantities of material are processed with automatic mixers, saving up to 50% of time. Also, the physical fatigue of the user must be kept as low as possible, an aspect which has gained more and more importance in recent years. Wooden stirring sticks and flat brushes are just so unprofessional!
Flexibility as a trump card
Businesses with smaller orders and surface sizes mainly carry out frequently-alternating activities, the majority of which are done by hand. For these businesses, the cost and effort involved in transporting and setting up delivery pumps and continuous mixers etc. is just as unrewarding as the intensive cleaning at the end of the job. For ever-changing tasks and widely differing materials, hand-operated solutions or small automatic mixers often make much more sense and are mostly far more economical to use.
Also, the latest materials such as pre-bagged material, requires very careful preparation in order to achieve the desired processing quality. This requires having the correct mixing technology ready, in order to achieve the desired result in less time.
Mixing without compromise
Finding the right mixing technology to suit your requirements depends on the following criteria
- Size of construction site
- Accessibility of the work location
- Frequency of mixing operations
- Transport of finished mix to processing site
In principle, the choice in mixing technology is between hand-operated single-spindle hand mixers, double-spindle hand mixers and rotation and forced-action mixers. With single-spindle hand-mixers, such as the Collomix Xo 1, 4 and 6, thin to plastic materials can be mixed extremely well according to the mixer’s shape and size. The hand mixers with two spindles, such as the Collomix Xo 55 duo feature mixing tools which work in opposite directions. As they offset the counter-torque, they make guiding the hand mixer through the material particularly easy for the user. At the same time, the work result is achieved up to 50% faster due to the compulsory mixing effect. This is a particular advantage for the often short pot lives of 2K reaction resin materials. It is important to know this to avoid costly errors. Practical detail: The mixing effect can be reversed in the Collomix Xo 55 duo devices by swapping the mixing tools. This means that one set of mixers for clockwise and anti-clockwise mixing is sufficient.
For automatic rotation mixers, the container for the mix rotates round a high-speed, central mixer. These mixers are suitable for larger mix amounts of highly-viscous materials such as many types of mortars, plasters, fillers and adhesives. Forced-action mixers optionally with timers for pre-selectable mixing times or mixing stations are used whenever larger amounts of coating systems must be continually used with consistent quality as the work progresses, e.g. in floor-laying work with 2K materials and concrete repairs.
Drive, mixing paddle, mixing material - the combination is what counts!
You can only work perfectly and efficiently if all the components are compatible with each other, i.e. the drive and mixing paddle correspond to the mixing material. The right mixing effect, the correct size and the right drive result in efficient, high-quality and effortless work results.
The right mixing paddle
A wide range of mixing paddles is available, suited to the most varied viscosities and loads. Tabular overviews, slide charts or an app are constantly updated and help to find the right mixing paddle for the mix at hand.
Mainly, clockwise and anti-clockwise mixing paddles are known on the market.
Counter-clockwise means that the mixing vanes are arranged from left at the bottom to right at the top. The material is drawn from the top to the bottom in a typical funnel formation and then comes to the top again on the sides of the mixing bucket. This mixing effect is used with less viscous materials such as paints, coatings, dispersion etc. in order to prevent the medium from spurting. It must be ensured that one drive is always used with enough power so that any higher material resistance can be overcome.
For clockwise mixing paddles, it is the other way round: The mixing vanes go from the right at the bottom to the left at the top. The material is firstly moved centrally to the top, forms a bell shaped bulge on the surface and is then transported downwards again on the sides. This variant is used where sand-filled and tough materials are mixed, such as cement, plaster, screed etc.
With the counter-clockwise effect, the mixer works its way into the material like a screw.
Changing mixing paddle
Different mixing paddles for different materials – in daily use, it is crucial that the mixing paddles can be changed quickly and easily. When changing to a hand mixer, common wedge adapters or M14 screw threads are often more difficult to remove after use. An effective and practical solution is the Collomix Hexafix coupling, which works with a click and without any tools. To take the mixer out, simply remove the grip sleeve. The hex shafts of the mixer sit in an interlocking position in the receptor and cannot become twisted.
For water-soluble materials such as emulsion paints, it is common to clean the mixing stick with a clump or a flat brush in a water bucket. Material buildups which are still fresh can be removed with grinding fleece during basic cleaning. If the material residues have already dried up, people often resort to “hammer cleaning”. This has a negative impact on the function and lifespan of the mixer and in a worst case scenario, also the machine! A more practical and professional solution is the mixer cleaning system, Collomix “MixerClean”. After mixing, place the mixer in a bucket filled with water, switch the machine on briefly and the two brushes clean the mixer in the blinking of an eye.
Designed for effortless cleaning
That’s why Collomix places as much value on the design of new machines and devices as on efficiency and performance. So, for example, the hand-mixers of the Xo range allow the user to work in an upright position. This helps avoid unhealthy forced postures. The mixing stations and transport trolley offered as add-ons or accessories or the LevMix filler mixer allow effortless work which is easy on your back.