Effect of processing parameters on the uniformity of adhesive meltblown web

Wang, Xiaomei; Zhao, Qiming

doi:10.1002/pen.21155

Cited by 6 publications

(8 citation statements)

References 6 publications

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“…These thinner fibers reduced the basis weight difference between different parts of the fibrous web. Wang and coworkers [7,8] also reported similar conclusion that BWD could be improved with increasing DCD. But, overlong DCD resulted in many smaller and lighter fibers floating in the air, which enlarged the difference of BWD.…”

Section: Introductionmentioning

confidence: 68%

Association study between basis weight distribution of melt-blown web and air velocity distribution on the collector

Sun

Liu

Shang

et al. 2019

Journal of Industrial Textiles

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Basis weight distribution of melt-blown fibrous web is attracting considerable interest because it directly affects the application performance of nonwovens. Basis weight distribution is strongly determined by the air velocity distribution on the top surface of the collector. However, how the mentioned air velocity distribution affects basis weight distribution is still unknown. Measurement of the mentioned two distributions is the first step to investigate the influence mechanism. Thus, this work measures air velocity distribution on the collector under different processing conditions. Then the fibrous web is fabricated under same conditions. After fabrication, the basis weight distribution of fibrous web is analyzed by using image analysis method. The effects of processing conditions, including velocity of air jet and suction, die-to-collector distance, and pore size of the collector, on the air velocity distribution and basis weight distribution are quantitatively analyzed. The results demonstrate that higher suction speed and air jet velocity, smaller die-to-collector distance, and larger pores of the collector result in higher air velocity on the top surface of the collector. On the other hand, higher suction speed and air jet velocity, larger die-to-collector distance, and smaller pores of the collector create evenly distributed basis weight. In addition, the correlation between basis weight distribution and air velocity distribution is discussed based on the Spearman correlation analysis method. High correlation demonstrates that air velocity and basis weight display similar distribution on the collector. Namely, both of air velocity and basis weight in the central zone are larger than those in the fringe zone on the collector.

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Section: Introductionmentioning

confidence: 68%

Association study between basis weight distribution of melt-blown web and air velocity distribution on the collector

Sun

Liu

Shang

et al. 2019

Journal of Industrial Textiles

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“…Moreover, the collecting time also increased, which was benecial for forming a uffy structure. 21 As a result of this factor, a uffy three-dimensional micro porous structure melt blown nonwoven lter was acquired. Then, the corona charging technology was applied to further improve the ltration efficiency by electrostatic attraction effects and the additive was also introduced to improve the electret performance.…”

Section: Resultsmentioning

confidence: 99%

Design of electret polypropylene melt blown air filtration material containing nucleating agent for effective PM2.5 capture

et al. 2018

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Particulate matter (PM) pollution has become a serious threat to public health, climate and ecosystems.Therefore, filtration materials with high filtration efficiency and low air resistance are in urgent need. Electret filters that can significantly improve filtration efficiency without increasing pressure drop are widely used for air filtration. However, long-term maintenance of the electrical charges on electret filters, particularly at high temperatures and in wet conditions, is still a challenge. Herein, we report the fabrication of a novel electret filter with a fluffy structure, high porosity and satisfactory filtration stability using polypropylene (PP) as the matrix polymer and magnesium stearate (MgSt) as the charge enhancer. Benefiting from the fluffy structure created by melt blown at a large die-to-collector distance (DCD), the pressure drop decreased from 67.0 Pa to 52.9 Pa at an air flow rate of 85 L min À1

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“…Melt-blowing webs produced from different polymer systems are extensively used in a wide range of applications such as filtration media, medical fabrics, adsorbent media, and sanitary products, to name only a few. [2,3] It has become an important industrial technique in nonwovens because of its ability to produce microfiber fabrics suitable for filtration media. The particle collection efficiency of a filter is known to be enhanced by static charging of fibers.…”

Section: Introductionmentioning

confidence: 99%

Effects of Tourmaline Particles on Structure and Properties of Polypropylene Filtration Melt-Blown Nonwoven Electrets

Han

et al. 2012

Journal of Macromolecular Science, Part B

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Polypropylene (PP) melt-blown electret webs were melt-spun by melt-blown processing of PP and PP/filler composites. The effect of tourmaline particles on the structure, morphology, and mechanical properties of PP melt-blown webs is reported. The meltblown webs were characterized by differential scanning calorimetry, wide-angle x-ray diffraction, scanning electron microscopy (SEM), and pore size meter. The crystallinity of melt-blown webs with tourmaline particles was more than that of PP alone. SEM micrographs revealed good dispersion of the additive in the fiber webs. The tourmaline particles offered some benefits to the mechanical properties of the melt-blown web. Melt-blown web samples with tourmaline had larger pore size, high surface charge density, higher filtration efficiency and stability of filtration efficiency.

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Effect of processing parameters on the uniformity of adhesive meltblown web

Cited by 6 publications

References 6 publications

Association study between basis weight distribution of melt-blown web and air velocity distribution on the collector

Association study between basis weight distribution of melt-blown web and air velocity distribution on the collector

Design of electret polypropylene melt blown air filtration material containing nucleating agent for effective PM2.5 capture

Effects of Tourmaline Particles on Structure and Properties of Polypropylene Filtration Melt-Blown Nonwoven Electrets

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