Extrusion

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Freudenberg Sealing Technologies unveils new extrusion process using molten salt

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The specific properties of vulcanized materials make them essential for many areas of application. In industries such as aerospace, food and beverages and the energy sector, components must meet the highest standards of abrasion and chemical resistance, elasticity, and durability. Delivering top-quality solutions in these areas requires excellent materials expertise, and at Freudenberg Sealing Technologies this goes hand in hand with state-of-the-art production technologies: With LCM (Liquid Curing Method), the company is now commissioning an advanced vulcanizing extrusion line. This is a process in which the fluid used for vulcanization consists of molten salt, heated to around 200 degrees Celsius and filled with vulcanizing salt. The entire line operates in a closed loop, in which the salt is continuously recycled, fed back into the process and reused.

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KraussMaffei Extrusion fuels growth in the cable-compound-market

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KraussMaffei Extrusion now offers machine technology with the flexible ZE BluePower, which processes formulations with halogen-free flame retardants in polyolefins – as an alternative to conventional cable formulations based on halogenated flame retardants. The specially configured extruder is used to produce high-quality HFFR (Halogen Free Flame Retardant) compounds with ATH (Aluminum Trihydroxide) content of up to 65%. Additionally, the ZE BluePower can be adapted to various process tasks and formulations, offering customers high flexibility for individual requirements.

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Continuous extrusion to cut energy costs and improve quality

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By using high precision continuous extrusion with an integral, built-in gear pump, it is possible to move away from old style mills, which have a huge footprint, and generally include plenty of safety hazards. Continuous extrusion removes the need for ramping up production in batches, which simplifies and accelerates preparation; and also separates materials input from production output. Current users report that this improves both control of production and quality.

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High efficiency twin screw extruder

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The demand for performance and consistency of elastomer based compounds is growing quickly in all fields (tire, technical rubber goods, cables). Specifications regarding physical, mechanical and chemical properties, as well as “visual aspects” properties of the finished products are becoming more and more strict.
During compound production, all operations are involved, from the weighing to the storage of the semi-finished mixed compounds. The mixing operation plays a very important role, since it is the step where all ingredients are incorporated, dispersed and distributed.

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