New approach to the meltblown-paradox

Christopher Bruns; Axel Nickel

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New approach to the meltblown-paradox

机译：融化悖论的新方法

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The meltblown process was developed 70 years ago by petrochemical Company ExxonMobil Chemical Co., Houston, TX/USA. Nevertheless, there is still no common understanding among experts as to how the very fine filament diameters in the range of a few micrometers (μm) are produced. The existing air velocities in the subsonic range are in any case not sufficient to explain the filament veloc-ities of up to several km/s that are necessary to achieve such fine filaments. This paper will present a new approach that Fiber-To-Go is pursuing. It is already known that there must be a "post-stretching" [1-3]. However, the cause of this phenomenon has not yet been clarified. The authors assume a high-frequency oscillation of the filaments caused by the merging of the 2 air streams at the nozzle tip during the "Exxon-process".

机译：熔喷工艺于70年前由石化公司埃克森美孚化工有限公司，休斯顿，TX / USA。然而，专家之间仍然没有共同的理解，即如何产生几微米（μm）的非常细灯丝直径。亚音速范围内的现有空气速度在任何情况下都不足以解释高达几厘米的灯丝速度，这是实现这种细丝所必需的。本文将提出一种新的方法，即光纤往返正在追求。已经知道必须有一个“后拉伸”[1-3]。然而，这种现象的原因尚未澄清。作者假设由在“埃克森 - 过程”期间喷嘴尖端的2个空气流合并引起的长度的高频振荡。

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《Technische Textilien》 |2021年第3appa期|68-72|共5页
作者
Christopher Bruns; Axel Nickel;
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作者单位

Fiber-To-Go GmbH Hagenburg/Germany;

Fiber-To-Go GmbH Hagenburg/Germany;

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New approach to the meltblown-paradox

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