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Numan Hoda,Firdevs Mert,Fatma Kara,Hande Gul Atasagun,Gajanan S Bhat 한국섬유공학회 2021 Fibers and polymers Vol.22 No.1
Meltblown nonwovens market has been continuing to grow because of the unique characteristics of allowing theproduction of microfiber webs directly from a thermoplastic polymer in a single step. Whereas a vast majority of meltblownprocesses have utilized the traditional Exxon die, the Biax-die has also been used in some processes. The aim of this studywas to understand the effect of critical process conditions of the Biax process, which has the advantage of lower high pressurehot air consumption compared to the traditional process, on the structure of meltblown webs. As the performance propertiesof meltblown nonwovens are mainly determined by the fiber diameter and diameter distribution, this study focused on thesetwo characteristics considering various process conditions such as melt temperature, melt throughput, air temperature and airpressure. In conclusion, it was observed that there were three distribution types, the normal distribution, log-normaldistribution, and skewed log-normal distribution, for meltblown webs produced by the Biax process. Air pressure and meltthroughput were the most effective process conditions on the fiber diameter of meltblown polypropylene webs. It was alsoobserved that fine fiber webs close to one-micron average fiber diameter and relatively narrower fiber diameter distributioncan be produced under appropriate processing conditions using the Biax process.
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