N95 face mask without meltblown filter
In terms of productivity, spunbonding is also much faster than meltblowing. On the latest state-of-the-art Reicofil 5 lines from Reifenhäuser Reicofil GmbH & Co. KG, Troisdorf/Germany, for example, throughput for spunbond fabrics is now up to 270 kg/m of beam width, compared to 70 kg/m width for meltblown.
The material can also be based on bi-components of Ingeo PLA biopolymer by NatureWorks. The company has been an active partner in the development, donating high amounts of its Ingeo PLA, which improves the productivity of the spunbond process by at least 30%. Another partner, ExxonMobil, has donated polypropylene and Vistamaxx resins.
This innovation has already received the 2020 RISE conference Innovation Award from the Association of the Nonwovens Fabrics Industry, INDA, Cary, NC/USA.