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  • 2.1.12-COTTON VALUE ADDITION-MOISTURE RESTORATION

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  • Moisture restoration

    Chapter 2 - Cotton value addition - Impact of varieties and production practices 

     
     
    Adding moisture before fibre–seed separation and lint cleaning will helpmaintain fibre length and reduce the number of fibres that break in the gin stand and lint cleaners. Adding moisture to lint that has already been ginned and lint cleaned, however, will not increase fibre length. Other benefits resulting from moisture restoration include reducing the static electricity level of the cotton, reducing the volume of the cotton required to achieve a given bale size and reducing the force required to press the bale. The resilient forces exerted on the restraining bale ties are also lower when the moisture cotton is higher.

    The recommended fibre moisture level of 6%–7% is based on production aspects as well as quality aspects. One approach used to restore moisture in cotton fibre is to blow humid air to through the cotton to moisten it. The amount of moisture restoration with this system is limited, especially at higher ginning rates. The cotton fibres lose some of their resilience, thus reducing the compressive forces required in baling. Another approach to restoring moisture is to atomize water and spray it directly on the cotton.