"Production and Quality Optimization of Nonwovens Infection Protection Clothing" (ProQulV) came about because bottlenecks in the production of these materials were particularly evident at the beginning of the Covid 19 crisis. For meltblown nonwovens, this optimization of the product quality is also particularly difficult because the textiles react very sensitively to fluctuations in the manufacturing processes and material impurities. Meltblown is the name of the industrial manufacturing process whose ultra-fine fiber nonwovens are responsible for providing the crucial filtering function in face masks. In this process, the molten polymer is forced through nozzles into a forward-flowing, high-speed airstream. It is stretched and cooled in a highly turbulent air flow.
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