Air conditioning system in spinning mills; fiber has many benefits that enhance profitability of process and product. Properties like dimensions, tensile strength, elastic recovery, electrical resistance, rigidity etc. of all textile fiber whether natural or synthetic are influenced by moisture regain, which controlled by conditioning of air in mill.
Problem with Spinning Mills:
There are not many occasions where humidity is more of an issue than during the processing of textile. Get it wrong and it can stop productions, damage machinery and harm staff. Get it right and you can maximize product weights, improve quality and increase machine speeds. The automatic air conditioning system used today is user friendly as well as efficient. Due to this proper and unique control on process without any interruption of humans. Therefore newly developing mill gives prominence to automatic air conditioning plant. Last few years many conditioning companies developing new technologies and system for textile industries.
Spinning of yarn from cotton and then weaving or knitting cloth from the yarn is known to mankind millennium. It is probably one of the first crafts developed as men’s thought of civilization, the ancient learnt that if water is sprayed on the floor in hot days or if we get wet cloth is kept over yarn , working is easier because of less yarn breakages. This was state of affairs till 200 years back, but as industrial revolution takes place mass production was aimed, different methods were developed to provide moisture to material to the material in process. As the machine heat added it create problem to RH%. In olden days people are using water cans and more number of windows which may not suitable for high speed.
Air conditioned spinning mill
Need of RH% Control in Spinning Mills:
Correct ambient conditions are essential to prevent degradation of textile material during a series of operation right from beating in blow room to weaving. Yarn should have requisite properties so that the final product retains its basic shape, size & strength.
When Humidity is High: Fiber tends to stick and lead to formation of laps on rolls which disrupt production process. Removal of laps is not only a manual and time consuming process, but result in damage of machine part, especially the rubber material (apron, top roller etc.).
When Humidity Is Low: Fiber become brittle and store electric charges generated because of friction between the fiber during their spinning process, which affect fiber properties and machine too.
In modern spinning machine designed with high speed which increase in temperature of mill and affect process. Whereas, modern machine has electronic control panel which requires specific temperature. Textile machinery generally are made of steel and aluminum which shows expansion during process with different rate which generate thermal and mechanical stress in machines.
Hence along with maintenance of stable RH% condition, recommended for textile and also to maintain the temperature level within range.
General Reasons for RH% and Temperature Control:
- Dry air causes low regain, yarn with low moisture content are weaker thinner, more brittle & less elastic and prone to generate static charge.
- Material at optimum regain has controlled properties, lower imperfections, more uniform yarn.
- Higher humidity reduces static problems and machine can run at higher speed.
- Textile weight are standardized at 60% RH and 20degree C , low humidity causes lower material weight and less profit.
- Humidification reduces fly and micro dust, giving a healthier and more comfortable working environment.
Conclusion:
There are many different issued involved with humidification of textile plant and as above described in discussions, getting it wrong can be an expensive mistake. So to control process, production, quality, comfort conditioning of air is necessary, even though humidification plant consumes 15% of energy of total spinning plant. That 15% cost can be overcome by improving quality and production of yarn. In proper air conditioning in spinning mills, it is to work and control the production. As above mentioned condition of RH% and temperatures for that specific process gives good efficiency and less machine maintenance.
