Comparison of different methods to measure the transverse wicking behaviour of fabrics

Raja, D.; Ramakrishnan, G.; Babu, V. Ramesh; Senthilkumar, M.; Sampath, M.B.

doi:10.1177/1528083712456054

Cited by 33 publications

(29 citation statements)

References 17 publications

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“…Several experimental techniques have been developed for evaluating fluid transport behavior in fibrous materials, including image analysis technique, electrical methods, weighing method, etc. 21–25 However, none of the existing methods is able to conduct measurement while the sample is under external pressure as padding bandage is when in use. As such compression will significantly distort the original padding internal structures and thus alter the liquid wetting behavior, it is therefore essential to develop a suitable experimental set-up capable of applying pressure and simultaneously observe/record the liquid flow in padding nonwovens.…”

Section: Methodsmentioning

confidence: 99%

Section: Measurement Of Liquid Transmission In the Paddingsmentioning

confidence: 99%

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Liquid transmission characteristics of padding bandages under pressure

et al. 2015

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Padding is an essential component in a multilayer compression bandaging system, used inside the compression bandage through which substantial amount of pressure is exerted on the limb of patient for treatment of venous leg ulcers. As a result, the liquid transmission behavior of padding is also critical in managing body fluids or sweat exuded from the affected limb, reducing the excessive moisture build-up around the wound and thereby ensuring comfort to and hence a better compliance from the patients. This study investigates the in-plane fluid transport characteristics of needle-punched nonwoven padding bandages. It first reviewed the existing studies related to the problems, and discussed their limits and possible improvements in dealing with complex fluid transport issues in textile porous media. The measurement of fluid transport under different pressure levels was then done using a newly designed apparatus capable of simultaneously tracing the liquid in-plane spreading along different directions, and obtaining several transport characteristics of a testing sample, e.g., the liquid flow anisotropy, the rate of movement, the area of wet surface with time, etc. Also the effects of several important factors, such as the levels of pressure applied, the specimen bulk density and needling density of the padding products, have been experimentally investigated.In addition, based on an extended Lucas-Washburn theory, we calculated the liquid flow distance, both instantaneous speed and a more useful time-averaged speed v av at any given direction, and 2 also defined a flow anisotropy index I A as a convenient parameter to represent the material flow anisotropy. The applications of v av and I A to actual samples have demonstrated the usefulness of these parameters in characterizing the flow nature and behavior of the materials.

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Section: Methodsmentioning

confidence: 99%

Section: Measurement Of Liquid Transmission In the Paddingsmentioning

confidence: 99%

Liquid transmission characteristics of padding bandages under pressure

et al. 2015

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“…The measurement of fluid transport is essential to understand how padding behaves on interaction with the fluids and what should be ideal structure for the nonwoven to obtain more spreading of body fluids to promote faster evaporation or removal. Several vertical and in-plane wicking tester are available that can be used for easy assessment [37][38][39][40][41]. Vertical wicking is determined by measuring the wicking height against gravity for a hanging fabric.…”

Section: Comfort Characterizationsmentioning

confidence: 99%

Nonwoven Padding for Compression Management

Kumar¹

2016

Non-Woven Fabrics

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Nonwovens play an important and crucial role in the designing of appropriate structures for healthcare and hygiene products. One such application is the use of nonwoven padding in a multi-layer compression system recommended for the treatment of chronic venous disorders. Padding helps in ensuring uniform pressure distribution underneath the bandaging layer wrapped around the circumference of the limb. Apart from the pressure management, padding also facilitates body fluids' absorption and removal, and provides thermal and tactile comfort to ensure better compliance of the multi-layer compression system. This chapter analyses the different roles of padding in compression management. The importance of different nonwovens and their structure on the padding performance are also reviewed, using both experimental and theoretical analyses. Finally, some useful recommendations are provided for design considerations to develop optimized products.

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“…In our earlier work [24], the comparison between three test methods was carried out, to measure the water spreading behavior of textiles such as rate of absorbency and total absorbent capacity. The methods described are manual method, commercial image analysis method using Photoshop and embedded image analysis method using digital signal processor through MATLAB software (EIAS).…”

Section: Introductionmentioning

confidence: 99%

A dynamic sweat transfer tester for analyzing transverse sweat transfer properties of multi-weave structure fabrics

Raja¹,

Babu²,

Senthilkumar

et al. 2013

Journal of Industrial Textiles

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The dynamic sweat transfer tester for analyzing the sweat transfer behavior of multiweave structure fabrics (single fabric contains different weave structures) has been designed and developed. This instrument has been developed to evaluate the sweat transfer rate in 16 different directions and 48 different regions for a test specimen of 7 cm diameter. The concept of the sweat measurement is to measure the sweat transport time required to reach the unit area of the fabric. The instrument works under the principle of electrical conductivity, that is, wetted cotton fabric acts as an electrical conductor between the power connected (5 V) copper pins and ground connected copper pins. The unique feature of this instrument is that the sweat transfer rate can be measured in fabrics which have irregular spreading behavior (single fabric that has different weave structures) at one step. Twelve different woven fabrics have been analyzed for the sweat transfer behavior using the instrument, and the results were well correlated (R 2 = 0.925) with manual test method.

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Comparison of different methods to measure the transverse wicking behaviour of fabrics

Cited by 33 publications

References 17 publications

Liquid transmission characteristics of padding bandages under pressure

Liquid transmission characteristics of padding bandages under pressure

Nonwoven Padding for Compression Management

A dynamic sweat transfer tester for analyzing transverse sweat transfer properties of multi-weave structure fabrics

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