Choosing Shirt Cloth and the Ruined Silk Saree
Anita buys cloth for two school shirts for her 14-year-old daughter in June. The shopkeeper offers 100% polyester at ₹90 per metre and pure cotton at ₹130 per metre; she needs 3 m in all. The daughter has had prickly heat on her back for two weeks and changes her shirt after school because it 'sticks to the body'. The family's monthly clothing allowance is ₹1,000 and the shirts must last two school years. At home, Anita's silk saree (bought for ₹3,500) has a dried tea stain on the pallu, and she plans to boil it with detergent and add a little bleach to make it look new, then dry it in direct sun. She also has a white cotton kurta that shrank after washing in hot water and a woollen sweater that has been attacked by insects and kept in a damp almirah.
1. Which cloth should Anita buy? Answer using fibre properties and a cost-per-wear comparison, not just price per metre.
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Buy the cotton, despite the higher price per metre.
Fibre properties that matter here:
- Moisture regain. Cotton absorbs about 8–9% of its weight in moisture and releases it slowly, so sweat is drawn away from the skin and evaporates. Polyester absorbs under 1%; sweat stays on the skin, the shirt clings, and the prickly heat worsens.
- Air permeability and heat. Cotton woven fabric lets air through; polyester is thermoplastic, feels hot and traps odour because bacteria thrive in the damp film on the fibre.
- Comfort and static. Polyester builds static and pills; cotton does not.
- Durability. Polyester is stronger and dries fast - its real advantages - but a shirt that is unwearable in June heat is not a saving.
Cost per wear:
- Cotton: 3 m × ₹130 = ₹390 for two shirts, worn about 200 days a year for two years (400 wearings) → about ₹1 per shirt-wearing.
- Polyester: 3 m × ₹90 = ₹270, but in practice the child will avoid it, the shirts may be replaced earlier, and there is the cost of treating heat rash.
For a hot, humid June in a school with no air-conditioning, absorbency decides the choice; a cotton–polyester blend (60:40) is the compromise if the budget is truly tight.
2. The silk saree has a dried tea stain. Point out the errors in Anita's plan and give the correct method of stain removal and care.
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Errors in the plan:
- Boiling damages silk: the fibre loses strength when hot and wet, the finish and lustre dull, and the saree may shrink or distort. Silk should never be boiled.
- Bleach is the worst mistake - chlorine bleach yellows silk, weakens it and can leave holes. It is only for specified white cotton.
- Direct sun fades the dye and makes the fibre brittle; silk dries in shade.
- Ordinary detergent may be alkaline; silk needs a mild, neutral soap.
Correct method:
- Scrape off any dried tea particles; do not rub.
- Blot the stain with a little cold water and a drop of mild soap or liquid dishwash, working from the outside in so the stain does not spread.
- For a set stain, apply a little diluted white vinegar or lemon and rinse at once; do not leave acid on the silk.
- Rinse in cold water with a few drops of vinegar to restore lustre, squeeze gently in a towel - never wring or twist.
- Dry flat in the shade, away from sunlight.
- Iron on the reverse at low heat, with a thin cloth between iron and fabric.
For a ₹3,500 saree with a sentimental or occasional use, dry cleaning is the safest route; home treatment should be limited to the stained area.
3. The white cotton kurta shrank and the woollen sweater has insect damage. Explain what went wrong in each case and how Anita should care for these fabrics from now on.
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Cotton kurta - shrinkage. Cotton fibres swell in hot water and the fabric contracts as it dries; the effect is worst with hot wash, hard wringing and direct sun or hot iron. Cotton also shrinks because the yarns were stretched under tension during weaving. Prevention: wash in cold or lukewarm water with mild soap, do not soak for hours, do not wring - roll in a towel and dry flat in shade, and press while slightly damp. New cotton cloth should ideally be washed before stitching.
Woollen sweater - insect damage. Wool is a protein fibre and is eaten by clothes moths and carpet beetles, which thrive in damp, dark, un-aired storage and are attracted to food and perspiration residues left in the garment. Prevention:
- Wash or dry-clean before storing - moths prefer soiled wool.
- Dry thoroughly in shade, then air and fold.
- Store clean and dry with neem leaves, dried lavender or a approved moth repellent, in a cotton bag or a well-aired trunk; avoid sealing in a damp almirah.
- Air the sweater every few weeks in the dry season and refold along different lines.
- Small holes can be darned with matching wool immediately, before they enlarge; badly holed areas can be used for mending patches or converted into a small article.
The common principle in both cases is that fibre care follows fibre nature: cotton responds to water and heat, wool to moisture, pests and friction.