LFT pultrusion lines Feddem’s LFT pultrusion lines produce long-fiber thermoplastic (LFT) compounds for injection molding. They feature the company’s patented modular impregnation die. The systems impregnate long glass or carbon-fiber rovings with resin and then form them into round strands that are cut into uniform pellets measuring 2mm to 3mm in diameter. The lines are configured with the extruder parallel to the roving line for space savings.
What’s new? Numerous improvements. Since Feddem patented its modular impregnation die in 2018, it has continued to optimize its pultrusion lines based on the results of rigorous testing under production conditions. The control system automatically detects broken strands and triggers an alarm so that the operator can close the nozzle hole for the broken strand. The system then automatically reduces the polymer flow into the impregnation unit so that the line can keep operating within tolerances. The lines also feature flow-optimized melt channels with no dead corners. The forming rolls are water-cooled from the inside and have a patented design allowing them to be connected to the cooling system via quick-release couplings.
Benefits High-quality pellets. The lines maintain narrow tolerances for the fiber content of the pellets, even at high strand speeds, providing excellent repeatability and consistent quality for repeat orders. The elimination of dead corners in the melt channels extends the intervals between cleanings and reduces purging times.
Feddem GmbH & Co. KG, Sinzig, Germany, 49-2642-90781-30, www.feddem.com
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