ROTRONIC HUMIDITY FUN FACTS

Humidity in Textile Manufacturing

Textiles in general Why the need In the days when cave men to measure humidity? ruled the world, people were dress - Controlling humidity in the tex - ing with animal fur to protect them - tile industry is essential. Too dry or selves from the elements. Today we an unbalanced environment will are far beyond that point and a have the following negative effects wide range of natural as well as on product quality and the produc - synthetic fibers have widely tion process. replaced animal fur. The modern textile industry Static electricity grew out of the industrial revolu - tion in the 18th Century as mass Dry materials create more fric - Fabric shrinkage production of clothing became a tion and are more prone to static Low humidity causes fabric mainstream industry. To handle the electricity. Higher humidity reduces shrinkage. Maintaining the appro - huge demand for textiles, sophisti - static problems and makes materi - prite level of humidity permits cated machines are now producing als more manageable enabling greater reliability in cutting and fit - impressive quantities. For example, more efficient production. ting during garment creation. Strict denim is being produced at a rate control of humidity in the pro - of one square meter per minute. Moisture Regain duction environment allows for To ensure optimum perform - Moisture Regain is defined as tighter quality control where ance of modern spinning, twisting the weight of water in a material dimensions are important, such as or weaving machines, a consistent expressed as a percentage of the in the carpet industry. environment must be created and oven dry weight. maintained. Dry air causes lower regain and Product weight That’s where humidity and tem - this contributes to poor quality and perature measurement plays an lower productivity. By humidifying Textile weights are determined important role. the environment , the materials are at standard condition of 65% RH kept at optimum regain and are less and 20°C (68°F). Maintaining humi - prone to breakage, heating and dity will ensure accurate product Facts & Figures friction effects. The materials handle weights, ensuring appropriate profits. • China has the largest textile industry and feel better, have fewer imper - directly followed by India. In 2010 fections and are more uniform . Dust China`s textile industry exported 25 Humidification reduces fly and billion USD worth of textiles. Yarn strength micro dust, providing a healthier • The textile industry in India is experi - Yarns with low moisture con - and more comfortable working encing annual growth rates of 9-10%. tent are weaker, thinner, more environment. • China is the largest producer of cotton brittle and less elastic. with 34 million bales each year. • Australia produces about 25% of the Best humidity level for Spinning Twisting Winding Weaving world wool production followed by Wool 50-85%rH 60-65%rH 55-60%rH 50-60%rH China at 18% and United States at 17% . Cotton 35-65%rH 50-65%rH 55-65%rh 70-85%rH Man made fibres 50-65%rH N/A 60-65%rH 60-70%rh

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