Presentation on Batch Section
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The document discusses the batch section process in dyeing fabrics. The batch section prepares fabrics to be dyed by grouping them into batches based on criteria like dyeing machine capacity, minimizing preparation time, and keeping batches for the same shade together. The batching manager plans initial batches considering these criteria. The batch section receives this plan and may adjust it based on machine conditions or emergencies. The key steps of batching include receiving fabric cards, prioritizing fabrics, checking availability, weighing and bundling fabrics, and documenting weights on cards before sending fabrics for dyeing.
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Presentation on Textile Mercerizing
Mercerization is a process that increases the luster of cellulosic fibers like cotton. There are two types: tension mercerization increases luster the most by swelling and rounding the fiber's cross-section as it is stretched in a caustic solution. Slack mercerization improves elasticity for fabrics that need to conform to the body. The goals of mercerization are to increase luster, strength, stability, dye uptake, and elasticity. It involves impregnating relaxed fibers in caustic soda, stretching them while soaked, and washing while maintained in a stretched state to cause chemical and physical changes that modify the fiber structure and properties.
Presentation on Mercerizing
Mercerizing is a finishing process for cotton that improves properties like luster and strength. It involves treating cotton with a strong alkaline solution, usually sodium hydroxide. John Mercer discovered the process in 1844. The sodium hydroxide penetrates the cotton fibers and reacts with hydroxyl groups, swelling the fibers longitudinally and altering the cellulose structure. This gives mercerized cotton increased luster, strength, dye uptake, and other improved qualities. The degree of mercerization depends on processing conditions like tension, concentration and time in the alkaline solution.
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- 1. WELCOME TO MY PRESENTATION
- 3. DEFINITION OF BATCH SECTION Batch section is a preparatory stage of dyeing. It is the receiving section of grey fabric and sending section of grey fabric to the dyeing section which will dye. Batching is the process to get ready the fabrics which should be dyed and processed for a particular lot of a particular order
- 4. FUNCTION OF BATCH SECTION
- 5. PROPER BATCHING CRITERIA • To use maximum capacity of existing dyeing machine • To minimize the washing or dyeing time or preparation time & m/c stoppage time. • To keep the no. of batch as less as possible for same shade. • To use a particular m/c for dyeing same shade.
- 6. BATCH MANAGEMENT Primarily batching is done by dyeing manager taking the above criteria under consideration. Batch section in charge receives this primary batch plan from dyeing manager. Some time planning is adjusted according to m/c condition or emergency.
- 7. FLOW CHART OF BATCH SECTION Receive batch card from Grey In-charge ↓ Make the priority as per dyeing plan ↓ Take one specific Batch card. ↓ Read the Batch Card for own understanding ↓ Check the availability of fabric ↓ Take required quantity of body fabric from ware-house. ↓ Make required no. of Rope maintaining equal length. ↓ Take collar/cuff as per size, keep the total weight. ↓
- 8. FLOW CHART OF BATCH SECTION ↓ Distribute the collar/cuff or Rib in each rope equally unsure equal length ↓ Stitch the fabric ↓ Write down the weight against roll no. in the back side of the Batch Card. ↓ Write the total weight in Batch card ↓ Put signature & date. ↓ Fill up the production report form.
- 9. CONCLUSION In Batching Section grey fabrics are weighted for ensuring the actual size. We know that during knit dyeing process fabric loss some weight due to scouring and bleaching process. So, during delivery certain amount of weight loss is adjusted with the delivery quality.