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Variable pitch
For many years, Maxi Melt has been able to provide custom-made screw profiles that take into account the specific needs of processed materials and improve the competitiveness of our customers. One of the key characteristics is the variable pitch, which can determine the time to melt.
Special Mixer Designs
In the plasticizing process, the screw, together with the tip assembly, is one of the most important components of the system as it allows a reproducible production cycle and determines the quality of the molded part. Maxi Melt therefore has 2 mixer types to guarantee a flawless plasticizing and homogeneous melt, and is able to save masterbatch usage and therefore reducing costs.
Conical Core
The conical core guarantees a longer, gentler plasticizing transition of the polymer and will therefore increase productivity and the mechanical strength of the products, create energy savings, reduce waste, and improve aesthetics: in other words, optimizing the plasticizing process.
The advantage of our screw profiles
It’s not simple to develop a plasticizing screw with a geometry for all polymers. OEM’s often offer a standard universal screw with their machine. This so-called universal screw is, in practice, not universal. It is often limited to some basic polymers and does not support the most delicate processes that require speed. Because Maxi Melt has expertise in plasticizing processes, we can offer screws to optimize your production.
All polymers are excellent thermal insulators. The melting of the granulate takes time, which is in contradiction with the productivity demands of a modern plasticizing process. Maxi Melt will use a conical core to increase the melting length/time of the granulate.
Compression ratios and mixing
If the compression ratio is too high, it can trigger the degradation processes in the compression zone, which, in time, affects the quality of the end product, with, for example, black spots, decreased mechanical properties, and visual appearance, obviously resulting in more scrap. If the compression ratio is too low, there exists a real risk for unmelted particles, and in the mixing zone (metering), the screw often fails to ensure a homogeneous melt.
Maxi Melt has the right solution to solve this problem, and together with various mixer options, we are able to offer the right solutions.
Example Screw profiles
Screw design becomes increasingly important to solve individual plasticizing demands.
For homogenization and improved plastification, we offer a standard screw with a pineapple mixer at the front.
To improve masterbatch mixing, we use a Maddox and pineapple mixer and can, in many cases, save masterbatch usage.
To have even better mixing, we offer the extreme screw with a specially designed kneading mixing system.
High-performance screws. Barrier screws ensure improved output and optimal pellet plasticization. The lamination effect prevents unmelted pellets from passing through the barrier zone, enhancing mixing and homogenization.
High-performance screws. Barrier screws with mixers, available in various configurations depending on the final product, ensure optimal output and excellent mixing capacity. They are particularly suitable for heterogeneous and 100% regrind materials.
Discover more products
Other products for injection and extrusion can be found below by clicking on the pictures for more information.
