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A review of processing strategies to generate melt-blown nano/microfiber mats for high-efficiency filtration applications
Journal of Industrial Textiles ( IF 3.2 ) Pub Date : 2021-05-26 , DOI: 10.1177/15280837211019488
Yahya Kara 1 , Kolos Molnár 1, 2
Affiliation  

Protective masks – worn properly - have become the key to wither away the COVID-19 pandemic. Nowadays, the vast majority of these masks are made of nonwoven fabrics. High-quality products have mainly melt-blown filtering layers of nano/microfiber. Melt blowing produces very fine synthetic nonwovens from a wide range of polymers and allows a fair control of the fiber structure and morphology that makes it ideal for filtration purposes. Melt blowing has a high throughput, and the low price of the filter makes these products widely available for civil use. Although melt-blown fiber applications were rapidly growing in the last three decades, we still have limited knowledge on the processing parameters. In this regard, we detailed the melt blowing parameters to obtain a filter media with high particle capturing efficiency and a low-pressure drop. We summarized the melt-blown fiber mat characteristics with specific attention to the pore size, the porosity, the fiber diameter, the fiber packing density and the air permeability desired for highly efficient filtration. Even though we cannot estimate the future social effects and the trauma caused by the current pandemic, and protective masks might remain a part of everyday life for a long while. That also implies that near-future investments in wider manufacturing capacities seem inevitable. This paper also aims to facilitate masks' production with improved filtration efficiency by reviewing the recent developments in melt blowing, the related applications, the effects of processing parameters on the structure and performance of the nonwoven products focusing on the filtration efficiency via knowledge.



中文翻译:

生成用于高效过滤应用的熔喷纳米/超细纤维毡的加工策略综述

正确佩戴的防护口罩已成为消除COVID-19大流行的关键。如今,这些口罩中的绝大多数是由无纺布制成的。高质量的产品主要具有纳米/超细纤维的熔喷过滤层。熔喷法可以用多种聚合物生产非常精细的合成非织造布,并且可以合理控制纤维的结构和形态,使其成为过滤的理想之选。熔喷具有高产量,并且过滤器的低廉价格使这些产品可广泛用于民用。尽管熔喷纤维的应用在过去的三十年中迅速增长,但我们对加工参数的了解仍然有限。在这方面,我们详细介绍了熔喷参数,以获得具有高颗粒捕获效率和低压降的过滤介质。我们总结了熔喷纤维毡的特性,特别关注孔径,孔隙率,纤维直径,纤维堆积密度和高效过滤所需的透气性。尽管我们无法估计未来的社会影响和当前大流行所造成的创伤,但防护口罩可能仍会长期存在于日常生活中。这也意味着对未来扩大制造能力的近期投资似乎是不可避免的。本文还旨在通过回顾熔喷的最新发展,相关应用,工艺参数对非织造产品结构和性能的影响,重点是通过知识来提高过滤效率,从而促进口罩的生产。

更新日期:2021-05-27
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