Evaluation of liquid moisture transport in textile structures

The present study is focused on the investigation of liquid moisture transport in textile materials by means of thermography and microtomography systems. The new vertical wicking method which combines the thermography system and the image analysis system is presented in this study. Further, porosity analysis of knitted fabrics by microcomputed tomography system is carried out to support understanding of liquid moisture transport phenomena. Textile structures used for functional underwear for sports and for special non-flammable hi-tech underwear have been selected to tested group. Results indicate that the distribution of pore thickness can be useful to uncover complex behaviour of textile structures during moisture transport into their structure

The Efficiency of Non-Flammable Functional Underwear

This study evaluates the efficiency of non-flammable functional underwear used as a secondary heat barrier in extreme conditions. Five groups of knitted fabrics were analysed for flame resistance and selected physiological properties (water vapour permeability, air permeability, thermal resistance and liquid moisture transport by moisture management transport). The results indicated similar levels of flame resistance for the materials tested but show important differences in terms of physiological characteristics, namely liquid moisture transport, which influences the safety and comfort of protective clothing

The Study of Fabric Performance for Car Seats

This paper deals with the investigation of the performance of car seat fabrics in terms of physiological comfort of sitting, specifi cally their water vapour resistance and air permeability. The current work presents an alternative approach to increasing the effectiveness of car seat fabrics through a combination of newly designed middle layer with forced convection achieved by a supplementary suction ventilation device. The supplementary device was designed to measure water vapour permeability by means of the sweating guarded hot plate (SGHP) system. It consists of two parts: a frame to grip a tested sample for measurements within the SGHP system and two suction ventilators which are arranged at one end of the mentioned frame in order to provide suction into the tested fabric plane during the SGHP test. The results of this investigation show that water vapour transport is increased by approximately 20% compared to the standard way of measurement by means of SGHP because of forced air flow in the plane of ribbed – channelled structure of the car seat middle layer. The findings of this study have a number of important implications for future practice. The combination of a car seat cover with channelled structure and forced air fl ow improves physiological comfort of sitting which is a key issue for both drivers and manufacturers. The suggested device for forced air flow convection in the plane of a car seat fabric has not yet been part of an actual car seat, however it is possible to use its principles in a smart car seat prototype

Evaluation of liquid moisture transport in textile structures

74-82The present study is focused on the investigation of liquid moisture transport in textile materials by means of thermography and microtomography systems. The new vertical wicking method which combines the thermography system and the image analysis system is presented in this study. Further, porosity analysis of knitted fabrics by microcomputed tomography system is carried out to support understanding of liquid moisture transport phenomena. Textile structures used for functional underwear for sports and for special non-flammable hi-tech underwear have been selected to tested group. Results indicate that the distribution of pore thickness can be useful to uncover complex behaviour of textile structures during moisture transport into their structure

Liquid Moisture Transportation Properties of Functional Underwears: Part 1

This study investigates the effect of material composition on moisture management properties. Fiber type has significant influence on the moisture management properties of knitted fabrics. In this article, single jerseys knitted fabric samples with different yarn compositions were prepared. Liquid moisture transportation properties including wetting time, absorption rate, spreading speed, one-way transportation capability, and OMMC were evaluated by Moisture Management Tester (MMT) and vertical wicking was evaluated using thermography system and image analysis. Knitted sample having fine cotton yarns with coolmax and micro denier multifilament polypropylene showed best liquid transportation properties. There is a strong co-relation between OMMC and accumulative oneway transport index with vertical wicking of knitted samples