Water vapour resistance of knitted fabrics in the function of thermophysiological comfort

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Date: Annual 2007
Publisher: DAAAM International Vienna
Document Type: Technical report
Length: 1,463 words
Lexile Measure: 1320L

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Abstract: In the recent decades, the achievement of human-comfortable clothing has become an important aim for the textile experts. The comfort of textile depends on various factors such as the type of material, constructional parameters, parameters of finishing, environmental conditions, the feeling of the wearer, etc. The purpose of this study is to evaluate the role of cotton yarn in knitted fabrics in the thermophysiological comfort achievement. For the investigation have been used single jersey fabrics knitted on circular machine from single cotton yarns in counts of 12, 14 and 20 tex and elastane. The water vapour (sweat) resistance of fabrics has been measured using the sweating guarded hotplate. The results have indicated that the important factors that increase the water vapour resistance are the structural density and addition of elastane to the structure of fabric.

Key words: water vapour resistance, permeability index, sweating guarded hotplate, thermophysiological comfort, knitted fabric

1. INTRODUCTION

Nowadays, comfort is considered one of fundamental properties when a textile product is valuated. According to the literature, it could be divided into physiological, psychological and sensorial comfort. The interest and need for the physiological research of clothing started with the approaching World War II. At the beginning, the intention of military approach was to quantify clothing impacts under various conditions. As the accent of scientific investigations has been added to human-related studies and the achievement of human-comfortable clothing has become important aim for the textile experts, many investigations have been carried out in order to improve the thermophysiological comfort or textile materials, either single- or multi- layered. Therefore, textile experts, physiologists, physicists and climatologists have gathered to cover the full range of the problem.

The investigations related to the topic, reported during the last decades, have mainly been focused to the following directions:

1. The investigation of fabrics in static state (McCullough et. al., 2004; Bartels et. al., 2003, etc.)

2. The investigation of clothing in dynamic state (Nelson et. al., 2005, etc.)

3. Wear trials on humans (Fanger, 1970, etc.)

The importance of the comfort of apparels has been recognized, but not enough objectively and systematic expressed. The main reason is because it depends on various factors that include the type of material, method of...

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Gale Document Number: GALE|A177174797