Compressibility of Cotton Blend Perpendicular-Laid Nonwovens

Parikh, D. V.; Calamari, Timothy A.; Goynes, Wilton R.; Chen, Y.; Jirsák, Oldřich

doi:10.1177/004051750407400102

Cited by 12 publications

(12 citation statements)

References 3 publications

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“…After passing through the chamber the vertically lapped fabric is cooled and wound up (4). In addition a supporting layer (5) can be brought from below onto the conveyor belt of the bonding chamber to produce two-layer nonwoven fabric [10].…”

Section: Fiber Materials and Processesmentioning

confidence: 99%

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Effects of Fiber Denier, Fiber Cross-Sectional Shape and Fabric Density on Acoustical Behavior of Vertically Lapped Nonwoven Fabrics

Taşcan

Vaughn

2008

Journal of Engineered Fibers and Fabrics

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Acoustical insulation and absorption properties of nonwoven fabrics depend on fiber geometry and fiber arrangement within the fabric structure. The different structures of the fibers result in different total surface areas of nonwoven fabrics. Nonwoven fabrics such as vertically lapped fabrics are ideal materials for use as acoustical insulation products, because they have high total surface. Vertically lapped nonwoven technology consists of carding, perpendicular layering of the carded webs, and through-air bonding using synthetic binder fibers. The surface area of the fabric is directly related to the denier and cross-sectional shape of the fibers in the fabric. Smaller deniers yield more fibers per unit weight of the material, higher total fiber surface area, and greater possibilities for a sound wave to interact with the fibers in the fabric structure. The research in the literature uses two methods for measuring acoustical properties of fabric materials: the impedance tube and reverberation room method. Small test samples are in the impedance tube method and sound absorption coefficient is determined at each frequency. Large reverberation rooms and large test samples are used for the reverberation room method. A direct comparative acoustical properties measurement device that was designed and fabricated at Clemson University School of Materials Science & Engineering was used to measure acoustical insulation in this research. This paper provides a description of the measurement devices and acoustical measurement data for vertically lapped nonwoven fabrics made from three different polyester fiber shape and two denier levels.

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Section: Fiber Materials and Processesmentioning

confidence: 99%

“…In this technology, fibers are processed into vertically lapped highloft nonwovens. Struto technology consists of carding, vertical layering of the carded webs, and thermal bonding using[10]. The fabric samples listed inTable IIwere produced by Struto International Inc. Kings Mountain, NC [11].…”

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confidence: 99%

Effects of Fiber Denier, Fiber Cross-Sectional Shape and Fabric Density on Acoustical Behavior of Vertically Lapped Nonwoven Fabrics

Taşcan

Vaughn

2008

Journal of Engineered Fibers and Fabrics

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“…Kucuk M and Korkmaz Y measured sound absorption properties of eight different nonwoven composites including different fiber types mixed with different ratios, they stated that the increase in thickness and the decrease in air permeability results in an increase in sound absorption properties of the material [8]. Perpendicular-laid nonwovens exhibit excellent compression recovery, softness and very good sound absorption performance since perpendicular-laid nonwovens have highloft structure where all the fibers are orientated in the vertical plane [9,10,11]. Tascan and Vaughn investigated the acoustical insulation of perpendicular-laid nonwoven fabrics made from different polyester fibers, and stated that fabrics made from 3 denier fibers have better sound insulation than those made from 15 denier fibers.…”

Section: Introductionmentioning

confidence: 99%

Study on Sound Absorption Performance and Transmission Behavior of Perpendicular-laid Nonwovens

Yang¹

2017

JFBI

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This work deals with the study of acoustic performance of perpendicular-laid nonwovens and their relation to fabric air permeability and thermal properties. Seven perpendicular-laid nonwoven fabrics were selected to examine sound absorption like average values of sound absorption coefficients (α) and noise reduction coefficient (NRC) as well as air permeability and thermal insulation properties. The Brüel and Kjaer impedance tube instrument, Alambeta and FX3300 Air Permeability Tester were used for evaluation of acoustic, thermal and air permeability properties, respectively. It was observed that sound absorption had insignificant correlation with thermal conductivity while it was strongly correlated with thermal resistance. And the correlation coefficient of NRC and thermal resistance was 0.9835, indicating that NRC was directly proportional to thermal resistance of perpendicular-laid nonwovens. It also was observed that α was inversely proportional to air permeability, with correlation coefficient 0.95. It was concluded that a higher thermal resistance and lower air permeability suggested a better sound absorption performance for a perpendicular-laid nonwoven fabric.

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“…Acoustic, mechanical, and thermal properties of perpendicular-laid nonwovens have been studied by researchers. 3–10 Tascan and colleagues 3–4 investigated the effect of fiber geometry and fabric density on acoustic behavior of perpendicular-laid nonwoven fabrics. They stated that fabrics made from 3 denier fibers are better sound absorbers and insulators than those made from 15 denier fibers; their results indicated that the perpendicular-laid nonwoven fabrics made from 4DG and trilobal fibers show better sound insulation results than nonwoven fabrics made from round fibers.…”

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confidence: 99%

“…The compressional behavior of perpendicular-laid nonwovens was introduced by Parikh and colleagues. [9][10] They compared the compressional resistance of perpendicular-laid and cross-laid nonwovens, and concluded that perpendicular-laid nonwovens have higher compressional resistance and better recovery properties than cross-laid nonwovens.…”

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Sound absorption and compression properties of perpendicular-laid nonwovens

Yang

Xiong

Mishra

et al. 2018

Textile Research Journal

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This study presents an investigation into the sound absorption behavior and compression properties of perpendicular-laid nonwovens. Seven types of perpendicular-laid nonwovens produced by vibrating and rotating perpendicular lappers were selected. Nonwovens with varying thickness and areal density were prepared by the heat-pressing method to investigate the effect of structural parameters such as thickness and areal density on sound absorption ability. Measurements of sound absorption properties were carried out with a Brüel and Kjær measuring instrument. The effect of manufacturing techniques on sound absorption performance and compression properties was investigated. The effect of porosity on sound absorption ability was studied. The influence of density and fiber orientation angle on compression properties was analyzed. The results show that samples prepared by vibrating perpendicular lapper exhibit better compression properties, whereas there is no significant influence of two manufacturing techniques on sound absorption performance. The increase of areal density results in improvement in the sound absorption ability. The increase of thickness can improve the sound absorption coefficient in the low-frequency range, but decrease of the coefficient occurred in the high-frequency range. A quadratic relationship between porosity and sound absorption ability has been found. The results also show that compressional resistance has a strong relation with density – the correlation coefficient is 0.95, indicating that the compressional resistance is directly proportional to the density of perpendicular-laid nonwovens. The results indicate that the perpendicular-laid nonwovens with higher initial fiber orientation angle have better compression properties.

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Compressibility of Cotton Blend Perpendicular-Laid Nonwovens

Cited by 12 publications

References 3 publications

Effects of Fiber Denier, Fiber Cross-Sectional Shape and Fabric Density on Acoustical Behavior of Vertically Lapped Nonwoven Fabrics

Effects of Fiber Denier, Fiber Cross-Sectional Shape and Fabric Density on Acoustical Behavior of Vertically Lapped Nonwoven Fabrics

Study on Sound Absorption Performance and Transmission Behavior of Perpendicular-laid Nonwovens

Sound absorption and compression properties of perpendicular-laid nonwovens

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