The Thermal-bonding Behaviour of Polyethylene/Poly(ethylene terephthalate) Bicomponent Fibres

Kim, H. S.; Ito, Hiroshi; Kikutani, Takeshi; Okui, Norimasa

doi:10.1080/00405009708658586

Cited by 3 publications

(4 citation statements)

References 17 publications

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“…The surface curvature at the contact point of fibres with smaller diameters is sharper, which results in higher surface tension force and the faster bonding rate compared to larger diameters. Similar observations were also made experimentally by Kim et al [2].…”

Section: Bondingsupporting

confidence: 90%

“…Mukhopadhyay et al [1] proposed a single-fibre test method that can provide a better insight into the thermal bonding behaviour than measuring the non-woven fabrics from full-scale production lines. Kim et al [2] reported an experimental investigation of thermal-bonding behaviour of two bicomponent fibres in point contact under different bonding temperatures and fibre diameters. Subsequently, Kim et al [3] reported a numerical investigation for the same experimental set-up and represented the three-dimensional fibre configuration by two cases of two-dimensional flow: first case representing the flow along the fibre axis and the second case representing the flow perpendicular to the fibre axis.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Computational analysis of fibre bonding in the through-air process

Hossain

Acar

Malalasekera

2007

Proceedings of the Institution of Mechanical Engineers, Part E:

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Through-air bonding is one of the thermal methods of bonding fibres in the production of non-woven webs. A computational study of the formation of bond point between two bicomponent fibres during the through-air bonding process is reported in this paper. The computational method involves solving the Navier-Stokes equations for two-phase flows of air and molten polymer in a three-dimensional configuration. The heating, melting, and bonding of fibres are modelled by the volume of fluid model together with a melting model. The simulated results show the formation of the bond between two fibres in contact and the change of shape of the bond with time at different bonding temperatures. The computation shows that the rate of bonding increases slightly at higher temperature.

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Section: Bondingsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Computational analysis of fibre bonding in the through-air process

Hossain

Acar

Malalasekera

2007

Proceedings of the Institution of Mechanical Engineers, Part E:

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Section: Materials and Experimental Methodsmentioning

confidence: 99%

“…The fibre diameter is an important measure of the fabric strength: it was found that it had a considerable influence on the maximum bonding strength achievable at a certain bonding time. 34 A measurement dataset was generated by analysing 8 different sets of fibres taken from each sample (50 measurements from each image for a total of 400 manual measurements performed in AutoCAD V R ). These data were used to assess the fibre-diameter distribution, its mean, d fib , and standard deviation, r, presented in Figure 3.…”

Section: Microstructural Characterisationmentioning

confidence: 99%

Anisotropic mechanical behaviour of calendered nonwoven fabrics: Strain-rate dependency

Cucumazzo

Demirci

Pourdeyhimi

et al. 2020

Journal of Composite Materials

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Calendered nonwovens, formed by polymeric fibres, are three-phase heterogeneous materials, comprising a fibrous matrix, bond-areas and interface regions. As a result, two main factors of anisotropy can be identified. The first one is ascribable to a random fibrous microstructure, with the second one related to orientation of a bond pattern. This paper focuses on the first type of anisotropy in thin and thick nonwovens under uniaxial tensile loading. Individual and combined effects of anisotropy and strain rate were studied by conducting uniaxial tensile tests in various loading directions (0°, 30°, 45°, 60° and 90° with regard to the main fabric’s direction) and strain rate (0.01, 0.1 and 0.5 s−1). Fabrics exhibited an initial linear elastic response, followed by nonlinear strain hardening up to necking and final softening. The studied allowed assessment of the extent the effects of loading direction (anisotropy), planar density and strain rate on the mechanical response of the calendered fabrics. The evidence supported the conclusion that anisotropy is the most crucial factor, also delineating the balance between the fabric’s load-bearing capacity and extension level along various directions. The strain rate produced a marked effect on the fibre’s response, with increased stress at higher strain rate while this effect in the fabric was small. The results demonstrated the differences of the mechanical behaviour of fabrics from that of their constituent fibres.

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