Fraunhofer ITWM: Virtual quality inspection o...
Fraunhofer ITWM

Virtual quality inspection optimizes production of filter nonwovens

(Source: Fraunhofer ITWM)
(Source: Fraunhofer ITWM)

Technical textiles are crucial for infection protection. The ultra-fine nonwovens are manufactured in so-called meltblown processes. A cross-departmental team at the Fraunhofer Institute for Industrial Mathematics ITWM, Kaiserslautern/Germany, is optimizing the entire production chain in the ProQuIV project. Simulations help to guarantee the product quality of the filter material despite fluctuations in production. 
For the meltblown nonwovens, optimization of the product quality is also particularly difficult because the textiles react very sensitively to fluctuations in the manufacturing processes and material impurities. The overall process of filter media production – from the polymer melt to the filter medium – presents a major challenge in simulation.
In the Production and Quality Optimization of Nonwoven Infection Protection Clothing (ProQuIV) project the focus was the so-called cloudiness, i.e. the non-uniformity of the fiber distributions in the nonwovens. 

In ProQuIV, digital twins and calculations from Fraunhofer ITWM support a holistic view and better understanding of the processes. The production of technical textiles thus not only becomes more efficient, but the nonwovens can be developed virtually without having to realize this in advance in a test facility. In this way, production capacities can be increased while maintaining or even increase the quality.
(Source: Fraunhofer ITWM)
(Source: Fraunhofer ITWM)
The project is part of the Fraunhofer-Gesellschaft's »Fraunhofer versus Corona« program and was completed in April 2021. The results will flow into several follow-up projects with the nonwovens industry. 

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