MACHINERY | MIXERS
Above: The latest Mixaco hot mixer variant features a larger outlet
Brand, who is a sales and marketing specialist at Mixaco, this improves thermal efficiency. Inlet ports for injecting liquids into the mix are now located in the walls, rather than on the lid, which improves mixing as the liquid components go straight into the mix vortex. Meanwhile, on its horizontal mixers, blades can be changed more easily in the event of any damage. Rather than having to remove the entire shaft from the mixer, the damaged blade can now be unscrewed from the shaft in situ. Mixaco also showed an updated laboratory
mixer. First introduced around two years ago, it carries out heating and cooling in a single vessel. The single frame size accepts vessels of 5, 10, and 20 l capacity.
At Italy-based Battaggion, sales engineer
Andrea Bassi highlights the turbomixer from group company Valtorta, which specialises in mixers for medium to low viscosity materials, typically PVC, masterbatch, and PTFE. He says the machine is recommended for producing seven batches per hour with the mixer filled to around 80% (around five batches for transparent PVC). Working faster, he says, carries the risk of burning the PVC. On the cooling mixer, he says blades have been optimised for different mixes and are easy to change.
Right: Kreyenborg’s Universal Quick Mixers can be used as standalone or connected units
Recycling solution Germany’s Kreyenborg recently installed a custom-manufactured mixing system for a custom- er needing to handle a wide range of regrinds. It says, due to the particular mixing requirements, this was a multi-faceted task. The customer needed to reuse different materials from different mills and shredders — and in various batch sizes in its production — so wanted a mixing system with a high level of flexibility, performance, precision, and reproducibility. At the same time, the unit had to have a small footprint and be easy to clean.
46 PIPE & PROFILE EXTRUSION | November/December 2022
The Kreyenborg mixing system includes two of the company’s established Universal Quick Mixers. These can be operated separately when smaller quantities are involved, or they can be connected and used together. For smaller quantities, this has the advantage that mixing times can be reduced by around 50%, the company says. This system is suitable for feeding using pressure- conveying systems when the two mixers, equipped with tangential inlets, act as cyclone separators. A filter module was installed downstream of the silos in the customised system to collect the conveyed dust. Homogenised material is discharged via two discharge screws into the big-bag filling stations. For the emptying of residue, and to facilitate cleaning of the system, the discharge screws can be rotated counter-clockwise. Italian machinery maker Plas Mec says its systems are based on several core pieces of equipment, including the company’s TRM high speed mixer and HEC high efficiency cooler mixer. These can be combined in the Combimix HC design, where versions range from 200/800 to 2,500/8,500 l capacity. Systems can be equipped with numerous accessories related to the type of production and the needs of the customer. The TRR container mixer is said to be a good
alternative to conventional turbomixers for produc- tion duties requiring a high degree of versatility and needing a wide range of different recipes to be mixed with the same machine. Such applica- tions include processing masterbatch, pigments, technical polymer compounds, and also powder coatings. The turbomixer is available in a High Power version for applications where high intensity mixing is required and there is the need for a significant temperature increase of the mixture.
Changing markets Plas Mec says several improvements have been introduced in recent years to improve performance
IMAGE: KREYENBORG
www.pipeandprofile.com
IMAGE: PETER MAPLESTON
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54
