MTI mixing and processing machines are used in a wide range of applications: for example as hygienic versions for the food, cosmetics or pharmaceutical industries, in two-stage production processes for the manufacture of peroxidically cross-linked polyethylene (PE-Xa) or for mixing fibre compounds for WPC, NFPC or PPC.
Here you will find some practical examples as well as tips on how your mixing plant can contribute to optimizing your individual process.
Antioxidants, slipping agents, light and heat stabilisers, flame retardants and others – there are numerous additives to achieve specific plastic properties and a great variety of products. Different processes are used today to prepare uniform and stable pre-mixes from individual raw materials.
MTI offers the perfect mixer technology for all mechanical and thermal processes to prepare additive compounds with premium quality. Find out here how to achieve excellent compound quality in face of extremely differing physical properties of the raw materials.
Even low moisture contents within the mixture for plastic products will lead to reduced mixing quality, extruder failure and defects in the final product. An efficient and uniform moisture reduction improves the processability and product quality of your mixture while lowering your costs at the same time.
The long-time field-tested and well-proven aspiration system developed by MTI reduces the moisture content of dryblends during the mixing. The remaining non-critical content has no impact on the process parameters and the product quality. The system can also be used to upgrade mixers of earlier MTI lines or other brands.
In the plastics industry, the quality of many multiphase systems depends on the formation of a good coupling between their constituents and the substrate material. For this purpose, the surfaces of minerals as well as of flame retardants are coated with silicones and silanes. In cosmetic products, pigments, e.g., gain strong hydrophobic properties via an appropriate surface modification to reduce their water absorption.
In all cases the low-viscosity coating must be applied to the surface of the inorganic recipe ingredients as homogeneously and reproducibly as possible. Such uniform and complete coating requires the use of specially optimised mixers. A maximum flexibility can be achieved with MTI‘s practically proven Uni tec® series of high-performance mixers which provide significant advantages over conventional systems in batch processes involving mixing volumes up to 2,000 liters.
PE-Xa is a proven material for gas, heating and water pipe systems, because cross-linking with peroxides significantly increases flexibility, resilience, temperature resistance and stress cracking resistance of high molecular weight PE. Since these characteristics outperform those of differently cross-linked PE pipes, and based on today‘s output-boosting demands in twin-screw extruder technology, the production of PE-Xa piping is growing steadily.
High-volume manufacturers, in particular, increasingly prefer a two-stage production process, using an MTI high performance mixer to blend the PE with additives and peroxide in a first step, providing a dry, free-flowing material mix. The extrusion of the pipe is then performed in a second stage.