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.