Influence of Processing Conditions on Melt Blown Web Structure: Part 2 -Primary Airflow Rate

Bresee, Randall R.; Qureshi, Aqib; Pelham, Matthew C.

doi:10.1177/1558925005os-1400202

Cited by 14 publications

(11 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The web consisting of finer fibers usually had a better BWU. In the study of Bresee et al, − finer fibers were usually observed in the higher air jet velocity. The pores between finer fibers were evenly distributed in the fibrous web.…”

Section: Resultsmentioning

confidence: 86%

Influence of Processing Conditions on the Basis Weight Uniformity of Melt-Blown Fibrous Webs: Numerical and Experimental Study

Sun

Yang

Xin

et al. 2018

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Basis weight uniformity of melt-blown fibrous webs is attracting considerable interest because it directly affects the application performance of nonwovens. There are numerous studies which introduce factors of processing conditions on the basis weight uniformity based on their final applications. However, theoretical research is still scarce. This paper describes the numerical modeling (bead–viscoelastic element fibrous model) involving fibrous web structure generation and basis weight uniformity evaluation. The effects of four processing conditions, including velocity of air jet and suction, die-to-collector distance, and moving speed of collector, on the basis weight uniformity of the fibrous web were quantitatively analyzed. Additionally, computational fluid dynamics simulation was employed to study the air flow (including the suction) in the melt-blowing process. The simulated results were in good agreement with the experimental data. The numerical model was practical and could better be used to research the problems on fibrous web formation and structures.

show abstract

Section: Resultsmentioning

confidence: 86%

Influence of Processing Conditions on the Basis Weight Uniformity of Melt-Blown Fibrous Webs: Numerical and Experimental Study

Sun

Yang

Xin

et al. 2018

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…Irrespective of increase in distance, the molten state of the polymer melt was maintained by the air temperature, which contributed to the formation of finer fibers. These findings were opposite to the effect of increasing the die to collector distance during melt blowing process [21,22]. The reason for such a discrepancy was attributed to the constant air temperatures in the case of this new process which allows the stretching to continue.…”

Section: Optimizationmentioning

confidence: 76%

An optimized melt spinning process to increase the productivity of nanofiber materials

Patnaik

Anandjiwala

2014

Journal of Industrial Textiles

View full text Add to dashboard Cite

The main disadvantage of the current electrospinning and related processes for producing nanofibers is low throughput rate, which is a challenge for quite some time. Traditional approach of studying the influence of one factor at time on nanofiber diameter does not give a complete picture of the process, where many interacting process parameters are being neglected. This paper reports a melt spinning process to increase the production rate of nanofiber materials. An additional attachment was fixed below the filament extruder of a melt spinning line. This attachment with controlled heated airflow arrangement stretches the filament coming out of the extruder by the process of sequential drawing which result in the formation of nanofiber materials. A die with segmented cross-section was used during melt extrusion process. A Box and Behnken factorial design of experiment was conducted to study the influence of multiple parameters on fiber/filament diameters. These parameters were distance of the first drawing zone from the die, airflow, and air temperature. The selected parameters were varied at three levels, À1, 0, and þ1, respectively. The current setup produces fibers with diameter ranging from 820 to 1145 nm, smallest diameter was 820 nm. Among the selected parameters, the interaction effect of the air temperature and distance of the first drawing zone from the die was a dominant factor on the extrusion of nanofibers. These results show that in a multivariable process, interaction effect of the parameters played a major role in determining fiber diameter and it cannot be neglected.

show abstract

“…Jamfibers accumulation in space due to adhesion between fiber segments (see Figure 17) occurring during fiber speed decrease through the majority of the die to collector distance, which contributes to fiber disorientation and creation of entanglements between the fibers [14,18,147]. It was concluded that increase in DCD or decrease in air flow rate leads to more entanglements due to more time for fiber contact/entanglement/fusion [82,83,158]. On the other hand, opposite trend was reported by Lee & Wadsworth (1990) [55] and Yesil & Bhat (2016) [76], i.e.…”

Section: Please Cite This Article As Doi:101063/15116336mentioning

confidence: 99%

Meltblown technology for production of polymeric microfibers/nanofibers: A review

Drábek

Zatloukal

2019

Physics of Fluids

View full text Add to dashboard Cite

This work summarizes the current state of knowledge in area of meltblown technology for production of polymeric nonwovens with specific attention to utilized polymers, die design, production of nanofibers, the effect of process variables (such as throughput rate, melt rheology, melt temperature, die temperature, air temperature/velocity/pressure and die-to-collector distance and speed) with relation to nonwoven characteristics as well as to typical flow instabilities such as whipping, die drool, fiber breakup, melt spraying, flies, generation of small isolated spherical particles, shots, jam and generation of nonuniform fiber diameters.

show abstract

Influence of Processing Conditions on Melt Blown Web Structure: Part 2 -Primary Airflow Rate

Cited by 14 publications

References 6 publications

Influence of Processing Conditions on the Basis Weight Uniformity of Melt-Blown Fibrous Webs: Numerical and Experimental Study

Influence of Processing Conditions on the Basis Weight Uniformity of Melt-Blown Fibrous Webs: Numerical and Experimental Study

An optimized melt spinning process to increase the productivity of nanofiber materials

Meltblown technology for production of polymeric microfibers/nanofibers: A review

Contact Info

Product

Resources

About