What is Cotton Bale Management?
simply, cotton bale management is the management of bale’s selection and bale’s distribution to achieve acceptable quality and cost. According to UsterTM Technology, “the choice of cotton bales according to fiber characteristics in order to achieve acceptable and economical processing condition and a constant yarn quality is called bale management”.
In other word, “Bale management is the selection of bales from the fiber quality database and the distribution of the bales according to the laid down management plan in order to achieve the target quality and cost level.”. Finally we say, bale management is picking the right quality at the right time. In this article, I brief describe objectives and classification of cotton bale management.
Objectives of Bale Management:
All the objects of mixing are fulfilled through the implementation of bale management. Bale management is logical data based mixing whereas “mixing” is general terms of bringing all the component fibers in together for intermingling. Therefore, special purposes or objects which are achieved through the implementation of bale management are sated below.
- To improvise the quality profile of the yarn in term of:
- Mass variation: mass variation which represents the imperfection of the yarn. A yarn made from bale management improvises the mass variation of the yarn like thin, thick and neps.
- End breakage variation: end breakage variation over the process period which is produced from improper raw material selection or improper mixing. Continuation of a spinning process from bale management avoids such type of draw-back i.e high end break frequency.
- Shade variation: shade variation which represents the barre effect in the end product. A export quality end-product with barre effect is ejected by the consumers. Such type quality problem can be avoided through implementation of the data based mixing i.e. bale management.
- To reduce the raw material cost: bale management has influence in reduction of the product’s cost through.
- The usage of maximum number of bales within bale warehouse-the least amount of left over bales.
- The improving the process performance.
- The usage of cheaper raw material with better quality fiber to achieve the desired quality.
- To avoid the quality jump: A bale management process ensures consistency in quality over a long spinning period, i.e avoid quality jump in spinning process.
Bale Management Classification:
- Basis on performing field of evaluation of the steps of bale management is classified into two groups:
- On-line bale management: this is on-field bale management system. In this system, all the steps for bale management are performed and evaluated from cotton fiber level for specific product. Example: EFSTM system from cotton incorporation of USA.
- Off-line bale management: this off-field bale management system. In this system, all the above said steps are performed and evaluated at cotton yarn field level for specific product. Example: BIASTM system from Uster Technologies or Manual program
- Basis on evaluation of fiber properties and technology of bale management is classified into two groups.
- Traditional bale management: this is man eye-evaluated bale management system. Previously bale management were done basis on eye estimation of fiber color of bale. Bales were mixed basis on same or very close color bales. There was maintained regularity in laying down the bales in stacking. Due to manual estimation of fiber properties, a lot of complaints regarding yarn quality were arising and spinning performance were worse.
- Modern bale management: this is machine evaluated bale management system. In modern bale management system, the fiber properties are evaluated by HVI or LVI machine and using the technological value of cotton, bales are laid down according to bale management. As all the fiber properties are considered in this system. Therefore, spinning and post spinning performance is better.
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- Hossain, M. S. (2014). Introduction to Textile Engineering. Dhaka: Books Fair Publications.
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- Siddique, D. H. (n.d.). Natural Fibers. Dhaka.