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<p>We have been investigating the process parameters of co-form meltblown nonwovens produced by incorporating aluminum oxide particulates during web formation. Part I focused on particle loading efficiency and materials characterization. However, the effects of processing conditions on particle spatial distribution and web uniformity have not been studied in detail. In Part II, we examine the influence of particle size (300&#xa0;μm, 425&#xa0;μm, and 600&#xa0;μm), particle insertion distance (15&#xa0;cm, 38&#xa0;cm, and 60&#xa0;cm), and air pressure (6 psi, 8 psi, and 10 psi) on these structural characteristics in a polyether block amide (PEBA)-based co-form meltblown system. Particle spacing was analyzed by using nearest neighbor distance (NND) from microscope images, while web uniformity was evaluated by a quadrant-based gravimetric method. All samples showed regular particle spacing with aggregation index values (R = 1.03–1.27). An insertion distance of 38&#xa0;cm produced the most regular particle distribution. Web uniformity remained high under all conditions, with a minimum of ~ 92%. Variation in air pressure showed no significant effect on either particle distribution or overall web uniformity. When considered alongside the results from Part I, these observations help establish a process–structure–property relationship for particle-loaded nonwovens materials. These studies explain how processing variables and web structure affect co-form meltblown structures.</p>

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Co-form Meltblown Process: Part II—Effect of Process Parameters on Particle Spatial Distribution and Uniformity

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年6月15日

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  • Md Nur Uddin,
  • Benoit Maze,
  • Behnam Pourdeyhimi

摘要

We have been investigating the process parameters of co-form meltblown nonwovens produced by incorporating aluminum oxide particulates during web formation. Part I focused on particle loading efficiency and materials characterization. However, the effects of processing conditions on particle spatial distribution and web uniformity have not been studied in detail. In Part II, we examine the influence of particle size (300 μm, 425 μm, and 600 μm), particle insertion distance (15 cm, 38 cm, and 60 cm), and air pressure (6 psi, 8 psi, and 10 psi) on these structural characteristics in a polyether block amide (PEBA)-based co-form meltblown system. Particle spacing was analyzed by using nearest neighbor distance (NND) from microscope images, while web uniformity was evaluated by a quadrant-based gravimetric method. All samples showed regular particle spacing with aggregation index values (R = 1.03–1.27). An insertion distance of 38 cm produced the most regular particle distribution. Web uniformity remained high under all conditions, with a minimum of ~ 92%. Variation in air pressure showed no significant effect on either particle distribution or overall web uniformity. When considered alongside the results from Part I, these observations help establish a process–structure–property relationship for particle-loaded nonwovens materials. These studies explain how processing variables and web structure affect co-form meltblown structures.