Care and Maintenance of Fabrics

Written and reviewed by Anjali Sharma, Biology & Home Science faculty at UniDrill (M.Sc. Botany, Banaras Hindu University · 8 years teaching). Based on NCERT Home Science Class XI (Human Ecology and Family Sciences Part II), Chapter 11.

Same shirt, two stains, opposite advice

A white school shirt picks up a tea splash at breakfast and a nosebleed after games. Washing the tea in hot water helps. Washing the blood in hot water ruins the shirt for good. The only difference is what the stain is made of, and that one idea runs through the whole chapter: identify first, treat second. Care of fabric is chemistry you do at the wash tub.

The big idea: care is a four-stage routine

Everything a fabric goes through at home follows one order. Mending comes first because washing is rough on cloth, and a small tear will not survive the scrubbing, the agitation and the wringing.

The care routine in one line: Mend → Launder (stain removal → washing → finishing) → Dry-clean (only where needed) → Store

The aims of all this care are to keep the material free of physical damage and to keep its appearance: stains and dirt removed without spoiling the colour, brightness and texture (softness, stiffness or crispness) kept or restored, and wrinkles removed or creases put in where wanted.

Stain removal: know what you are fighting

A stain is an unwanted mark or colour on a fabric caused by contact with, and absorption of, foreign matter. It will not come out in normal washing and needs special treatment. You identify it by colour, smell and feel, then pick the matching treatment.

Why the logic works. An acidic stain meets an alkali and is neutralised, which is why vegetable stains go with borax or baking soda. Protein behaves like an egg white: heat cooks it onto the fibre, so a hot wash sets blood and milk for good, while cold water with detergent lifts it. Grease does not dissolve in water, so it needs a solvent to dissolve it or an absorbent to soak it up.

Pause and predict: a toddler spills milk on a cotton frock and a helper pours hot water on it straight away. What happens?

Check your answer: the hot water coagulates the milk protein and fixes it in the fibre, so the stain becomes much harder to remove. Milk is an animal stain, so the right move is detergent in cold water (or sponging with a solvent and washing in cold water).

The golden rules of stain removal. Remove a stain when it is fresh. Identify it before treating it. For an unknown stain, start with the simplest method and move to stronger ones. Use a mild reagent repeatedly rather than a strong one once. Wash the fabric with soapy water afterwards to clear every trace of chemical, and dry in the sun, which acts as a natural bleach. On delicate fabrics, try the chemical on a small hidden patch first.

Four techniques. The choice depends on how the stain sits on the cloth.

Six reagent groups. Reagents must be used in liquid form, at the recommended strength.

Beyond the textbook. For the exam: protein stains such as blood and milk need cold water and detergent. In reality: many modern detergents contain enzymes (proteases) that break protein down, which is why they handle blood, egg and milk marks so well at ordinary temperatures. Why it matters: the cold water rule is still the safe exam answer, and the enzyme detergent explains why the rule works in practice.

Beyond the textbook. For the exam: javelle water (sodium hypochlorite) is an oxidising bleach and removes many stains. In reality: chlorine bleach is too harsh for silk and wool, which are protein fibres, and it should never be mixed with ammonia or acidic cleaners, because the mixture releases toxic gases. Why it matters: a stain remover that works on white cotton can destroy a silk saree or make the bathroom unsafe.

Common stains on white cotton. These are the treatments worth knowing. They apply to white cotton, so other fibres and coloured cloth need extra precautions. Stain removal is only a preparatory step and must be followed by washing or dry-cleaning, which clears the chemicals.

Dirt, water, soap and detergent

Dirt is grease, grime and dust jammed between the threads of a fabric. Loose dirt can be brushed or shaken off, or lifted by steeping in water. Dirt held tight by sweat and grease needs something that acts on the grease: a solvent, an absorbent or an emulsifier. Cleaning with solvents or absorbents is dry cleaning. Washing in water with soap or detergent, which emulsify the grease (break it into very small particles) so it rinses away, is normal cleaning.

Water, the first cleaning agent. Water is the most valuable laundry agent. It sticks to fabric and penetrates it during steeping (wetting), and the movement of water particles, called pedesis, helps to loosen non-greasy dirt. Warmer water means more pedesis and better penetration, which also helps with greasy dirt. But water alone cannot remove dirt that does not dissolve in it, and it cannot keep removed dirt suspended. The dirt settles back on the cloth, and this redeposition is the main cause of fabrics turning gray over many washes.

Soaps and detergents fix that. Soap is made by a reaction between natural oils or fats and alkali. Detergents are made from chemicals. Both are surface-active agents (surfactants): they lower the surface tension of water so it soaks into clothes faster, and they hold the removed soil in the wash water so it does not redeposit.

Beyond the textbook. For the exam: soap is not effective in hard water. In reality: the calcium and magnesium in hard water react with soap to form a sticky, insoluble scum that clings to cloth and leaves it dull and stiff. Detergents do not form this scum in the same way. Why it matters: households on hard borewell water see grayish, rough clothes with soap, and the cure is a detergent or softened water.

Four ways to wash

The method depends on the fibre, the yarn and fabric construction, and the size and weight of the article. Each method must do two jobs: loosen the dirt stuck to the cloth and hold it in suspension until the rinse.

Finishing: the last rinse decides the look

After washing, the article is rinsed until it is absolutely free of soap or detergent. Reagents added in the last rinse then restore freshness, brightness, body or crispness.

Starch does more than stiffen. It stops dirt touching the fibre directly, so the next wash is easier. When starching dark cottons, a little blue or tea in the solution prevents white patches.

Pause and predict: a white cotton bedsheet has turned a little yellow after many washes. Should you use blue, a bleach or an optical brightener first?

Check your answer: blue is the textbook answer for yellowness in white cotton. An optical brightener would also work and covers grayness too. A bleach is the wrong tool for a simple loss of whiteness, because bleaches work by destroying colour and are best kept for stains.

Drying. The best way is to hang clothes in the sun, wrong side out. The sun dries faster, acts as an antiseptic and bleaches whites. Silk and woollens should not hang long in strong sun, and synthetic fibres lose strength and turn yellow permanently, so these are better dried indoors.

Ironing needs three things: high temperature, moisture and pressure. An electric iron is better than a charcoal iron because charcoal can stain and its temperature cannot be controlled, whereas fibres need specific temperatures. Ironing damp cloth gives the moisture, or you can sprinkle water on dry clothes and roll them in a towel. Pressure comes from moving the iron along the length. Articles that stretch, such as lace, are pressed: the iron is placed, lifted and placed again, never slid. Pressing also sets creases, hems, pockets, plackets and pleats.

Dry-cleaning: when water is the enemy

Dry-cleaning means cleaning fabrics in a non-aqueous liquid medium. Water is absorbed by fibres, which causes swelling, shrinkage, wrinkling and colour bleeding. Dry solvents do not swell the fibre, so the method is safe for delicate textiles. The common solvents are perchloro-ethylene, a petroleum solvent and a fluorocarbon solvent.

It is done in industrial establishments, not at home. The cleaner tags each item with special instructions, inspects it and treats stains on a spot board, because water-soluble stains and hard spots need that attention. Telling the cleaner what the stain is makes the job easier. Many dry-cleaners also replace buttons, make minor repairs, replace sizing, add water repellency, moth proofing or permanent creases, and clean fur, leather, feather pillows, quilts, carpets and draperies.

Beyond the textbook. For the exam: perchloro-ethylene is a standard dry-cleaning solvent. In reality: it is an effective solvent but a regulated chemical because of health and environmental concerns, so professional cleaners use closed machines that recover the solvent, and other solvent systems are also in use. Why it matters: this is why dry-cleaning is left to establishments with the right equipment rather than done at home.

Storage: protecting off-season clothes

India's weather changes through the year, so clothes not needed now are stored. Everything must be clean and dry. Woollens are brushed well and dry-cleaned. All stains are removed and all tears mended. Pockets are turned inside out, trousers and sleeves turned up, and each piece is shaken, brushed, washed, ironed and folded. Pack loosely, since tight packing sets permanent creases at the folds. Shelves, boxes and trunks must be clean, dry, insect free and away from dust, in very low humidity.

Factors that decide how a fabric is cared for

Five things combine to decide appearance, comfort, durability and care: fibre content, yarn structure, fabric construction, colour application and finishing. The fibre is the biggest.

Beyond the textbook. For the exam: polyester has very low moisture absorption, so it is uncomfortable in hot weather and holds oily stains. In reality: the same property is why polyester dries fast and does not shrink or sag when wet, so it suits uniforms, sportswear and rain wear. Why it matters: a fabric's weakness in one setting is its strength in another, so judge a fibre against how the article will be used.

Yarn, weave, colour and finish. High twist yarns may shrink, and novelty or complex yarns may snag or abrade. A blended yarn needs care for both fibres: polyester-cotton cannot take very hot water because it shrinks, yet it wrinkles little and irons easily. Simple closely woven fabrics are easy to maintain. Satin, pile and long-float weaves snag, knits stretch out of shape and may need re-blocking, and sheers, laces, nets, felts and non-wovens must be handled gently. Dyed and printed fabrics can lose colour in cleaning and stain other clothes, so test the colour before use. Some finishes need renewing after every wash.

The care label: the garment's instruction card

A care label is a permanent label or tag with regular care instructions, attached so it cannot separate and stays legible for the garment's useful life. A shopper who reads it avoids most laundry mistakes.

Exam traps

60-second revision

Where this chapter connects

• Before: Fabrics Around Us explains the fibre properties that this chapter turns into care instructions.
• Same unit: Our Apparel covers selecting and buying clothes, where reading the care label first saves repair and replacement cost.
• Class XII link: Care and Maintenance of Fabrics in Institutions scales these ideas up to hospital, hotel and hostel laundries.