[...]... levels in a textile mill: Table 1.1 General recommendations of RH% in a textile mill Department Cotton Man-made (%) fibres (%) Department Wool (%) Opening and picking Carding Silver lapping Ribbon lapping Combing Drawing Roving Spinning Winding and spooling Twisting Warping Knitting Weaving 45–60 50–55 55–60 55–60 55–65 50–60 50–60 45–60 60–65 60–65 55–70 60–65 70–85 Raw wool storage Mixing and blending... present in the air during the handling or processing of cotton, which may contain a mixture of many substances 6 Humidification and ventilation management in textile industry including ground up plant matter, fibre, bacteria, fungi, soil, pesticides, non-cotton plant matter and other contaminants which may have accumulated with the cotton during the growing, harvesting and subsequent processing or storage... material, finish it, and possibly run it through a printing process Although dyeing and finishing operations do not require air washers, they have started using various types of smoke-abatement 8 Humidification and ventilation management in textile industry equipments to control vapours emanating from the plant from some of these finishing processes 1.4 Control of air pollution The textile industry is... strength and elasticity depend on fibre and spinning characteristics, on warp pre-treatment (slashing) and increase with moisture content of the yarn being fed into the weaving process Hairiness depends on the spinning system, speed, humidity and the fibre quality Higher spindle speed, lower humidity and abrasion while spinning are the major reasons for increased hairiness It is reduced by slashing, as... drawing, combing and roving Carding Spinning Winding Twisting, warping, sizing and weaving 15 20 45 30 20 To minimize risk of industrial diseases such as byssinosis (lung disease) among the workers, the US Occupational Safety and Health Authority (OSHA) has specified concentration limits of dust in the air streams of production rooms for compliance by the concerned industries as follows: Need for maintaining... control, humidity 1 2 Humidification and ventilation management in textile industry control can help safeguard against explosive atmospheres In short, humidification can provide a better environment and improve the quality of life and work Air free from dirt, debris and fibres that is closely maintained within fixed limits of temperature and humidity is a vital necessity to the textile industry It is not... aerosols and heat, and air motion for cooling and refreshing Compliance with the above listed limits for air cleanliness brings in economic benefits for the textile mills in the form of improved worker attendance, product quality, process efficiency, reduced end-breakage rate in spinning and weaving mills and improved yield of yarn Because of this need, the textile industry is one of the largest industrial... Any dust present during the handling and processing of cotton through the weaving or knitting of fabrics, and dust present in other operations or manufacturing processes using raw or waste cotton fibres and cotton fibre by-products from textile mills are considered cotton dust within this definition The workers are exposed to such working environment and inhale fibrous particles and dust whole day Generally... side surface at least in the zone of tank, the steam supplied into the internal 20 Humidification and ventilation management in textile industry cavity being kept at a pressure Pc less than steam pressure P v inside the tank by a certain value so as to cause partial and controlled condensation of the steam supplied into the tank onto the side surface and onto the textile material In a very recent development... Prafulchandra Varia and Devand Prafulchandra Varia, steam generated in the steam generator is injected into the moist air generating chamber through the insulated pipeline and water is sprayed in the chamber through nozzles Humidifier and conditioner chamber is connected with moist air generating chamber through the insulated pipeline Velocity of moist air and temperature in the humidifier and conditioner . hour Blow room, drawing, combing and roving 15 Carding 20 Spinning 45 Winding 30 Twisting, warping, sizing and weaving 20 To minimize risk of industrial diseases such as byssinosis (lung disease). present in the air during the handling or processing of cotton, which may contain a mixture of many substances      6 Humidification and ventilation management in textile industry including. various conferences and seminars. Some of his publications include Fundamentals of Textile Mill Management, Guidelines to Process management in Textiles, Quality management in Garment Industry, Winning Strategies,