Definition of Garment Washing

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1. Definition of garment washing?

Definition: The technology which is used to modify the appearance, outlook comfortable

and fashion of the garments is called garment washing.

Or, It is a technology by which outlook, size, comfort & fashion of garments / apparels

are change of modified and given old garment effect is called Garment Washing.

2. Write the purpose of washing?

Purpose of washing/Best wash look is the best touch of a garment - This may be

explained in the following way:-

Washing process of garment is done to create wash look appearance. After

washing the garments create a new looks which seems the new touch of fashion.

By the washing technique, faded/old look, color or tinted affect is created in the

garments which also seem the best touch of garments.

Washing technique creates new fashion such as tagging, grinding, destroy,

Blasting, whickering, permanent wrinkle, deep dye, tie dye, P. P spray, hand

crapping, P.P spoonzing etc. This also seems the best touch of garments.

The main and important function of washing is to reduce size materials as a result

the garment become size free and become soft hand feel.

When these soft garments are touched then it seems to best touch of garments.

To attraction the customers/Buyer by different types of Fashionable washing and

market developments.

Due to washing, shrinkage occurs in the garments. There is no possibility of

further shrinkage of the wash garments.

Any dirt, spot or germ if added in the garments during manufacturing is also

removed due to washing.

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3. Write different types of dry processing?

Different types of dry processes are-

Sand Blasting Hand Scraping Permanent wrinkle Over all wrinkle P.P Spray P.P Sponging Grinding & Destroy Broken & Tagging

4. Write different types of wet processing?

Different types of wet processing are-

Normal wash/Garments wash/Rinse wash

Pigment wash

Caustic wash

Enzyme wash (Boi wash &Boi polishing)

Stone wash

Bleach wash (Ice wash& snow wash)

Stone Enzyme wash

Acid wash

Silicon wash

Dip Dyeing

Tie & Dye etc.

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5. Write the machine name which are used in washing plant?

Machine which are used in washing plant:

Sample washing Machine (Horizontal / Vertical Type)

Washing Machine (Side loading)

Washing Machine (Front loading)

Hydro extractor Machine

Dryer Machine (Steam)

Dryer Machine (Gas)

Chemical Mixture Machine

Industrial Oven (Gas/Electric)

Boiler

Submersible Pump

Grinding Machine

Tagging Machine

Steam chamber for crinkle

E.T.P (Effluent Treatment Plant)

Generator

Sand Blasting Gun

Sand Blasting chamber

Spray gun and dummy

Screw compressor

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6. Write the chemical names which are used in washing plant?

Chemical names which are used in washing plant:

Enzyme

Acetic Acid

Detergent

Antistain

Bleaching powder

Sodium hyposulfite

Caustic Soda

Soda Ash

Sodium Bicarbonate

Potassium permanganate

Cationic / nonionic Flax softener

Micro Emulsion Silicon

Salt (sodium chloride)

Buffer

Hydrogen peroxide

Stabilizer

Fixing agent

Catanizer

Optical Brightner

Resin

Sodium Metabisulphite

Desizing agent

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7. What is the purpose of normal wash?

Purpose of normal wash:

1. To remove dust, dirt, oil spot, impurities from the garments

2. To remove starch presents on the garment fabrics

3. For soft feeling to wear the garments after purchasing

4. To achieve buyer washing standard

8. Describe the first step & 2nd step of normal / garment wash?

Washing process of normal wash:

First step:

Lot size: -....................... 70 kg Twill/Canvas Garment.

Add water at L: R = 1: 8-10.............. 560 - 700 Liter.

Machine Running.

Add detergent at 0.5 gm / liter ............ 280-350 gm.

Temperature........... Sometime cold & sometime 40°c to 60°c.

Time .............................. 5 to 10 minutes.

Drop the liquor.

Cold wash

2nd Step:

Add water at L: R = 1: 6 ......... 420 liter.

Washing machine running

Add Flax softener at 0.6 gm / liter.... 252 gm.

Add Acetic Acid at 0.5 gm / liter ...... 210 gm.

Time................................... 5 to 10 minutes.

Drop the liquor.

Unload the Garments on trolley.

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9. What is the function of Hydro extractor machine?

Function of hydro extractor machine: Hydro-extraction the garments to remove excess

water from the washed Garments.

10. What is the purpose of silicon wash?

Purpose of silicon wash:

1. To give durable softness & elastic handle properties.2. To increase anti pilling affects, dimensional stability, and tear resistance.3. To improve wear and easy care properties.

11. Write different between normal wash and silicon wash?

Difference between normal wash and silicon wash is given bellow:

Normal wash Silicon washTo remove dust, dirt, oil spot, impurities from the garments.

To give durable softness & elastic handle properties.

To remove starch present on garments fabrics.

To increase anti pilling affects & dimensional stability.

For soft feeling to wear the garments after purchasing.

To increase tear resistance property.

To achieve buyer washing standard To improve wear and easy care properties.

12. Describe the desizing process of silicon wash?

Desizing process of silicon wash:

Lot weight (Approx 125 Pecs) ............ 60 kg.

Add water at L: R = 1: 10.............. 600 Liter

Machine Running.

Add Desizing agent at 0.6 gm / liter ............ 360 gm.

Add Detergent at 0.5 gm / liter.................... 300 gm.

Temperature.......................... 40--50°c.

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Time ................................10-- 20 min.

Drop the liquor.

Rinse one time 3 minutes

13. Describe the softening process of silicon wash?

Softening process of silicon wash:

Add water at L: R = 1: 8.............. 480 Liter.

Add Acetic Acid at 0.6 gm / liter ............ 288 gm.

Cationic Softener at 1 gm / liter.............. 480 gm.

Silicon (ME) at 0.5 gm / liter ................ 240 gm.

Temperature.......................... 40°c

Time................................ 15 to 20 min.

Drain the bath.

Then unload the garments on trolley.

14. Write the chemical name which is used in pigment wash / caustic wash.

CHEMICAL USED IN PIGMENT WASHING AND THEIR FUNCTION

CAUSTIC SODA (NaOH) :-

Caustic created the role in bleach technique without color change the

garments.

Caustic has a cleaning power which is more powerful then soda Ash.

Fading affect/old looking affect come rapidly on garments

SODA ASH (Na2Co3) :

Soda ash created alkaline medium for the breakdown of pigment dye.

It has also a cleaning power.

It has also help color fading affect of garments.

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Detergent:

Here detergent is used to remove impurities from the Garment fabric surfaces and

temperature helps detergent to enhance its action. Detergent removes the impurities from

the garments fabric surface. During coming these impurities, some pigment will be

washed out from the pigment dyed or printed area of the garments. As a result fading

affect will be developed.

Acidic Acid (CH3COOH) :

Acidic Acid is used to neutralize the garment from alkaline condition and to control the

pH value in wash bath.

Flax Softener (Cationic, anionic):

Softener is used to make the garments treated textiles is surface feel that is bath sickly

and soft and also provides excellent lubricating properties

CHEMICAL USED IN CAUSTIC WASH AND THEIR FUNCTION

CAUSTIC SODA (NaoH):

Caustic created the role in bleach technique with color change the

garments.

Caustic has powerful cleaning power.

Fading affect/old looking affect come rapidly on garments.

ACIDIC ACID(CH3COOH) :

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Acidic Acid is used to neutralize the garment from alkaline condition and to control the

pH value in wash bath.

DETERGENT:

Here detergent is used to remove impurities from the garments fabric surfaces and

temperature helps detergent to enhance its action. During these impurities, some color

will be washed out from the colored fabric garments. As a result fading affect will be

developed.

Flax Softener (Cationic, anionic):

Softener is used to make the garments treated textiles is surface feel that is bath sickly

and soft and also provides excellent lubricating properties.

15. Write the chemical name which are used for Enzyme wash?

Chemical which are used for enzyme wash:

Desizing agent

Detergent

Anti back staining agent

Acidic acid

Cationic softener

Chlorine bleach

Soda ash

Sodium hypo sulphite

Sodium bi carbonate

Silicon (ME)

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16. Write the desizing / first step process of caustic wash process.

Desizing process of caustic wash:

Lot size: - ...................... 80 kg.


Machine Running.

Add Caustic soda (NAOH) at 1.60 gm / liter …. 1024 gm.

Add Detergent.............. at 0.8 gm / liter ......... 432 gm.

Temperature........... 50°c to 60°c.

Time (Depend upon the shade) ....... 20 to 60 min.

Drop the liquor.

Wash cold water for 3 min.

17. What is the standard r.p.m of washing machine?

The standard r.p.m of washing machine is 28-35

18. Write the chemicals name which are used for softness of garments?

Chemicals which are used for softness of garments:

Cationic softener

Silicon

Enzyme

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19. Write the chemicals name which are used for good quality hand feel?

Chemicals which are used for good quality hand feel are-

Cationic softener

Silicon

Enzyme

20. What chemical used for protect bleeding / staining on garments?

Anti back staining agent is used for the protection of staining / bleeding on garments.

21. What process is done for remove starch / sizing materials from the garments?

Desizing process is done for removing starch / sizing materials from the garments.

22. Why acitic acid is used in Enzyme bath?

Acitic acid is used in Enzyme bath to neutralize the garments from alkaline condition and

to control the pH value of the bath.

Or, Acitic acid is used in Enzyme bath to create acitic medium for the better action of

enzyme and flax softener.

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23. Write different between steam dryer & gas dryer.

Steam dryer Gas dryer

Low production rate High production rate

Generally light garments are used for dry Generally Heavy garments are used for dry.

No risk of yellowish formation May be form yellowish effect on the

garments.

24. Describe the Desizing process of Denim Long Pant?

Desizing process of Denim Long Pant:

Lot weight (80 Pecs) ............ 60 kg denim long pant.


Machine Running.

Temperature.......................... 60°c.

Add Desizing agent at 0.6 gm / liter ............ 324 gm.

Add Detergent at 0.8 gm / liter.................... 432 gm.

Time ................................15- 25 min.

Drop the liquor.

Wash 1 time by cold water

25. Describe the Enzyme bath process of Denim Long Pant by Acid Enzyme?

Enzyme bath process of Denim Long Pant by Acid Enzyme is given bellow:

Add water at L: R = 1 : 8 ........... 480 Liter

Temperature .............................. 45°c.

Add Acetic Acid at 0.6 gm / liter ... 270 gm.

Add Anti Back staining at 0.6 gm / liter .... 270 gm.

Add Acid Enzyme at 2.00 gm / liter ... 900 gm.

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Time... (Depend upon the shade)……..30- 60 min.

Increase temperature to 90°c and run 1 minute (enzyme killing).

Drain the bath.

Rinse Twice, each 3 minutes

26. Describe the Enzyme bath process of Denim Long Pant by Neutral Enzyme.

Enzyme bath process of Denim Long Pant by Neutral Enzyme is described bellow:


Temperature................................ 45°c.

Add Acetic Acid at 0.3 gm / liter..... 135 CC.

Add Anti Back staining at 0.6 gm / liter ... 270 gm.

Add Neutral Enzyme at 2.00 gm / liter ... 900 gm.

Time... (Depend upon the shade)….40- 80 min.

Increase temperature to 90°c and run 1 minute (enzyme killing).

Drain the bath.

Rinse Twice, each 3 minutes

27. How can do the killing of Enzyme in Enzyme bath?

For killing of Enzyme in Enzyme bath the temperature is increased to 90oC and run for 1

minute.

28. Why chlorine bleach is use in Denim wet processing?

Chlorine bleach is used in Denim wet processing for the better bleach action on garments.

Because we know that chlorine has strong bleaching power. So that it can easily create

bleaching effect on garments.

29. What chemical is used for neutralization of chlorine bleach?

Sodium hypo sulphite is used for neutralization of chlorine bleach.

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30. Write the main 5 function of Enzyme wash.

The main 5 function of Enzyme wash:

1. It remove size material from the garments.

2. Enzyme attack as chemically not mechanically for this reason low damage /

wastage than stone wash.

3. Enzyme improve the anti pilling properties.

4. It attacks more the surface of the fabrics and gives a very smooth surface.

5. It increase the color fastness and rubbing fastness properties.

31. What is the action of Enzyme on Garments?

The action of enzyme during enzyme wash, it hydrolysis the cellulose, at first it attacks

the having projecting fiber and hydrolyzed them. Then it attacks the yarn portion inside

fabric and partly hydrolyzed the yarn portion and faded affect is produced.

32. What is standard time for bleaching in Bleaching bath of Denim Garments?

The standard time for bleaching in bleaching bath of Denim Garments is 12- 15 minutes.

33. What types of Enzyme used in Bangladesh?

Mainly two types of enzyme used in Bangladesh. One is Acid Enzyme (liquid) and

another is Neutral Enzyme. Neutral Enzyme is two types – a). Powder form b). Liquid

form i.e. SL Enzyme.

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34. Write different between Acid Enzyme & Neutral Enzyme.

Difference between Acid Enzyme & Neutral Enzyme:

Acid Enzyme Neutral Enzyme

Acid enzyme color is slightly brown. Enzyme is slightly white powder form.

pH range is 4.5-5.5 pH range is 6-7.

Temperature- 40oc – 55oc . Temperature – 40oc – 60oc.

Time required 25 min to 50 min. Time required 40 to 70 min.

Enzyme affects come within short time. Enzyme affects come slowly

Staining /Bleeding occurs more in garments Less staining/\bleeding on garments.

Production is high. Production is less.

Used for medium and light shade. Used for dark shade.

35. How can control the pH value in garments?

By the appropriate use of acidic acid, buffer and hydrogen peroxide we can neutralize the

garments from alkaline condition and therefore can control the pH value in garments.

36. What types of Enzyme is suitable for Dark shade Enzyme wash of Denim Long

Pant & why?

Neutral Enzyme is suitable for Dark shade Enzyme wash of Denim Long Pant Because

37. What type of Enzyme is suitable for medium / light shade Enzyme wash of Denim

skirt?

Acid Enzyme is suitable for medium/ light shade Enzyme wash of Denim skirt.

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38. Write Desizing process of twill Long Pant for Enzyme wash.

Desizing process of twill Long Pant for Enzyme wash:

Lot weight (Approx 125 Pecs) ............ 60 kg twill long pant.

Add water at L : R = 1 : 10 .............. 600 Liter

Machine Running.

Add Desizing agent at 0.6 gm / liter........ 360 gm.

Add Detergent at 0.5 gm / liter ............... 300 gm.

Temperature.......................... 50-60°c.

Time ........................................10- 20 min.

Drop the liquor.

Rinse one time 3 minutes

39. Write Enzyme bath process of Twill Long Pant Enzyme wash.

Enzyme bath process of Twill Long Pant Enzyme wash:


Temperature.......................... 45°c.

Add Acetic Acid at 0.5 gm / liter.............. 240 gm.

Add Acid Enzyme at 1.2 gm / liter ............ 600 gm.

Add Anti stain at 0.50 gm / liter ...........,,.. 240 gm.

Time (Depend upon the standard).... 30 to 60 min.

Increase temperature to 90°c and run 1 minute.

Drain the bath.

Rinse Twice, each 3 minutes.

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40. Write main process of stone Enzyme wash for Denim Long Pant.

STONE ENZYME WASH

Now in our Bangladesh maximum Denim garment is washing STONE ENZYME

WASH. It is most popular wash for Buyer. A process of stone enzyme wash of 60 kg

batch of Denim Long Pant as mentioned below:

First Step :- PRE-TREATMENT / DESIZING

Batch size....................... 60 kg Denim Long Pant.

Add water at L: R = 1: 9.............. 540 liter.

Start the machine.

Temperature.................... 60°c

Add Desizing agent at 0.6 gm / liter .......... 324 gm.

Add Detergent / Antistain at 1 gm / liter ... 540 gm.

Time................................ 15 to 25 min.

Drop the liquor

Second Step : HOT WASH


Temperature.................... 60°c.

Time................................ 5 min.

Third Step :


Add pumic stone at ½ vol of garments.

Add Enzyme at 1.50 gm/liter ..................... 720 gms.

Add Acetic Acid at 0.6 gm/liter ..................... 288 gms.

Add Antistain at 0.8 gm/liter ..................... 384 gms.

Temperature............................. 40°c to 50°c..

Time (Depend upon the shade) .......... 60 to 70 min.

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Then temperature raise to 90°c for 1 minute.

Drop the liquor.


Then pumic stone out from washing machine

Fourth Step : BLEACHING


Machine running.

Add bleaching powder (k.c.i) at 10 gm/liter ..................... 4800 gms.

Add soda ash at 5 gm/liter................. 2400 gms.

Temperature ....................................... 60°c.

Time (Depend upon the shade) ...... 12 to 15 min.

Drop the liquor.

Rinse twice, each 3 minutes

Fifth Step :- NEUTRAL WASH

Add water at L: R = 1: 9..... 540 liter.

Add sodium hyposulphite at 3 gm/liter ..................... 1620 gms.

Temperature ......................... 40°c.

Time ............................... 10 to 12 min.

Drop the liquor.

Rinse one

Sixth Step :- SOFT WASH

Add water at L: R = 1: 8 .......... 480 liter.

Add Acetic Acid at 0.6 gm/liter... 288 gms.

Cationic softener at 1 gm/liter.... 480 gms.

Time................................ 5 min.

Drop the liquor.

Unload the garments to trolley.

Seventh Step :- Hydro-extractor Machine

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Hydro-extraction the garment to remove excess water from the washed

garments

Eighth Step : Drying Machine :

Load 40 kg garments

Set temperature........ 75°c to 85°c.

Time.......................... 35 to 40 min.

Time.......................... 10 minutes in cold dry.

Ninth Step : Delivery

After quality checking garment will be delivery

41. What is the perfect temperature for Acid Enzyme and Neutral Enzyme?

The perfect temperature for Acid Enzyme and Neutral Enzyme is 45oc.

42. Write different types of washing faults.

Different types of washing faults are-

Color shade variation.

Crease Marks.

After wash hole.

Very dark & very light.

Bleach Spot.

Bottom hem & course edge destroy.

Running shading.

Over blasting / low Blasting.

Over grinding / low grinding.

Bad smell due to poor neutralization.

Poor hand feel.

To high hairiness.

Poor brightness.

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High or low affect / abrasion on garments.

Spot on garments.

Out of range / level of pH value of garments.

43. Write the function of Anti stain, Detergent, Potassium Permanganate, Micro

Emulsion Softener, Hydrogen Peroxide, Optical Brightener and desizing agent.

Anti stain: Anti stain is used to prevent the staining on weft yarn of the denim (white

yarn), white pockets of garment, levels, and contacted fabrics of garment and increased

the brightness of fabrics; it is also acts as anti-creasing agent.

Detergent: Chemical character is fatty alcohol polyglycol ether in an aqueous, glycolic

solution. Detergent is widely applicable in the continuous and discontinuous pretreatment

of all tyPecs of fiber and their blends. To remove impurities, mineral oil contamination

and sizes from the garments scouring of goods for dyeing and printing fully white and

colored articles.

Potassium Permanganate: Chemical character is fatty alcohol polyglycol ether in an

aqueous, glycolic solution. Detergent is widely applicable in the continuous and

discontinuous pretreatment of all tyPecs of fiber and their blends. To remove impurities,

mineral oil contamination and sizes from the garments scouring of goods for dyeing and

printing fully white and colored articles.

Emulsion Softener: Amino Silicon is a textile finishing agent consisting mainly of amino

modified silicon. When applied on fabrics, it gives durable softness, lubricity, elastic

handle, antipilling, dimensional stability, tear resistance and fabric to be cut and sewn

more easily allows and improving wear and easy care properties.

Hydrogen Peroxide: Hydrogen peroxide creates the prime role in bleach wash technique.

In alkaline medium, hydrogen peroxide breaks up and gives some perhydroxhyl ion,

which discolor the coloring materials and as a result fading affect is developed. Hydrogen

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peroxide is used in scouring, bleaching bath for white/ready for dyeing of gray fabric

garments. It is used also neutralized the garment from alkaline condition.

Optical Brightener: Two types of optical brightener are used in the washing plant – a)

Red brightener. b) Blue brightener. Mainly optical brightener is used for improve the

brightness of garments.

Desizing Agent: Desizing agent is used to remove mainly starches, cmc, waxes, fats

pectin’s, minerals & unfixed indigo dye from denim, twills, poplin & canvas fabrics etc.

44. Describe only bleaching process of Bleach wash of Denim Long Pant.

Bleaching process of Bleach wash of 60 kg Denim Long Pant is given bellow:

Lot size ………………60 kg Denim Long Pant.


Machine running.


Add soda ash at 5 gm/liter ............... 2400 gms.

Temperature............................. 60°c.

Time (Depend upon the shade) ....... 12 to 15 min.

Drop the liquor.


45. What do you know about pumic stone?

Pumic stone:

The pumic stone are the perforated stones, produced from volcanic explosion.

At first these stones are soft but becomes cold, it becomes the stones with rough

surface,

Pumic stones float on water.

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Pumic stones come from Indonesia and Turkey.

Indonesia stone color is slightly brown and Turkey stone is white color.

Pumic stones are available in 3 size i.e. small 2-3 cm, medium 3-5 cm and large

size 5-7 cm.

Two to Three times can be used are pumic stone. Every bag contain 22 kg to 25 kg

and price 400/= to 425/=/ bag

46. Write the approx Enzyme and Silicon wash charges for Twill Men’s and Boy’s

Trouser separately.

Approx rate for Enzyme and Silicon wash for twill Men’s and Boy’s Trouser is-

Enzyme wash:

– Kids / Boy's item - us$ 1.80 - $ 2.25 / DOZ

– Adult item - us$ 2.25 - $ 2.75 / DOZ

Silicon wash:

– Kids / Boy's item - us$ 1.25 - $ 1.75 / DOZ

– Adult item - us$ 1.50 - $ 2.00 / DOZ

47. Why we run the dryer with garment after dry 10 -15 minutes in cold position?

We run the dryer with garment after dry 10 to 15 minutes in cold position to cold the

garments.

48. Which dryer is suitable to dry white readymade garments and why?

Steam dryer is suitable to dry white readymade garments because there is no risk of

yellowish formation on the garments.

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49. Describe the risk/ problem of gas dryer.

If we use gas dryer then there is a great possibility of yellowish formation on the

garments.

50. Describe the fault/ problem of garments if Excess load in the washing machine.

51. What are the reasons of after wash hole?

52. What is the standard r.p.m (inner drum) of industrial dryer?

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53. If inner drum r.p.m of washing machine and dryer machine is too high, what types

of effect on garments?

54. What is the standard L:R for Desizing, Enzyme bath and Softener bath?

Standard L:R for desizing is 1:9 ,for Enzyme bath= 1:8 and for Softener bath= 1:8

55. Write the name of steps of stone Enzyme wash process of Denim Long Pant.

Steps of stone Enzyme wash process of Denim Long Pant are given bellow:

Pretreatment/ Desizing

Hot wash

Enzyme

Bleaching

Neutral wash

Soft wash

Hydro extractor machine

Drying machine

Delivery

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STONE ENZYME WASH

Now in our Bangladesh maximum Denim garment is washing STONE ENZYME

WASH. It is most popular wash for Buyer. A process of stone enzyme wash of 60 kg

batch of Denim Long Pant as mentioned below:

First Step :- PRE-TREATMENT / DESIZING

Batch size....................... 60 kg Denim Long Pant.


Start the machine.

Temperature.................... 60°c

Add Desizing agent at 0.6 gm / liter .......... 324 gm.

Add Detergent / Antistain at 1 gm / liter ... 540 gm.

Time................................ 15 to 25 min.

Drop the liquor

Second Step : HOT WASH


Temperature.................... 60°c.

Time................................ 5 min.

Third Step : Enzyme


Add pumic stone at ½ vol of garments.

Add Enzyme at 1.50 gm/liter ..................... 720 gms.

Add Acetic Acid at 0.6 gm/liter ..................... 288 gms.

Add Antistain at 0.8 gm/liter ..................... 384 gms.

Temperature............................. 40°c to 50°c..

Time (Depend upon the shade) .......... 60 to 70 min.

Then temperature raise to 90°c for 1 minute.

Drop the liquor.


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Then pumic stone out from washing machine

Fourth Step : BLEACHING


Machine running.


Add soda ash at 5 gm/liter................. 2400 gms.

Temperature ....................................... 60°c.

Time (Depend upon the shade) ...... 12 to 15 min.

Drop the liquor.


Fifth Step :- NEUTRAL WASH

Add water at L: R = 1: 9..... 540 liter.

Add sodium hyposulphite at 3 gm/liter ..................... 1620 gms.

Temperature ......................... 40°c.

Time ............................... 10 to 12 min.

Drop the liquor.

Rinse one

Sixth Step :- SOFT WASH

Add water at L: R = 1: 8 .......... 480 liter.

Add Acetic Acid at 0.6 gm/liter... 288 gms.

Cationic softener at 1 gm/liter.... 480 gms.

Time................................ 5 min.

Drop the liquor.

Unload the garments to trolley.

Seventh Step :- Hydro-extractor Machine

Hydro-extraction the garment to remove excess water from the washed

garments

Eighth Step : Drying Machine :

Load 40 kg garments

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Set temperature........ 75°c to 85°c.

Time.......................... 35 to 40 min.

Time.......................... 10 minutes in cold dry.

Ninth Step : Delivery

After quality checking garment will be delivery

56. Write the name of steps of Enzyme wash process of Denim Dark Enzyme wash

process.

Steps of Enzyme wash process of Denim Dark Enzyme process:

Pretreatment / Desizig Enzyme Softening Hydro extractor machine Drying machine Delivery

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57. Write the flow chart of Medium Enzyme shah wash of Denim Readymade Garments.

Flow chart of Medium shade enzyme washes of Denim Readymade Garments-

Pretreatment / Desizing

Enzyme

Bleaching

Neutral wash

Soft wash

Hydro- extractor machine

Drying machine

Delivery

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58. Write the chemical name of Acid wash process.

Chemicals used in Acid wash process are-

Desizing agent Detergent Potassium permanganateSodium Matabisulphite Phosphoric acidAcetic acid Softener

59. What is the standard stock solution of P.P solution?

The standard stock solution of P.P solution is 0.4% i.e. 100 Liter water 400 grams

potassium permanganate.

60. How do you neutralization of P.P treatment garments?

We can neutralize the P.P treated garments by applying sodium metabisulphite.

61. Write the precaution of acid wash.

Precaution of acid wash:

Maintain the stock solution properly constant when comes socking the stone.

No water licks in to the machine when treated pumic stone & garments in to the

machine.

Not excess load the garments in the Acid wash processing.

Add some new stone after finishing on batch to maintain the volume for 2nd

batch. It is a matter of experience

62. What types of dyes used for tinting of readymade garments?

Generally Reactive and Direct dyes are used for tinting of Readymade garments.

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63. Generally which color is used for tinting?

Generally Yellow, Brown, Orange etc color is used for tinting.

64. Write the main tinting process (dying) by Direct dye.

Tinting by Direct Dye:

First Step: - After different wet processing i.e. Acid wash, Stone wash, Enzyme wash,

Stone enzyme wash, Bleach wash take 60 kg garment for Tinting & over dyeing.

Water at L: R = 1: 7.............. 420 Liter

Run the Machine.

Temperature................. 50 - 80°c

Dir. Brown GTL - at 0.04%........... 24 Gms.

Dir. Orange ZTL - at 0.01%........... 6 Gms.

Add Salt at 20 gm / liter ............ 8.40 kg.

Add Leveling agent at 0.5% /........ 210 gm.

Time................................ 10 to 30 mts.

Rinse by cold water 3 minutes.

Second Step: - FIXING

Batch size .............................. 60 kg.

Water at L: R = 1: 7.............. 420 Liter

Run the Machine.

Temperature................. 50°c

Add fixing agent at 0.8 %(owf) ... 480 gm.

Time............................................ 10 mts.

Third Step: - Softening.

Batch size.................... 60 kg.

water at L : R = 1 : 7 ............................ 420 Liter

Add Acetic Acid at 0.6 gm/liter ............ 250 gm.

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Add Cationic softener at 1 gm/liter ...... 420 gm.

Time................................ 10 mts.

Drop the liquor.

Then unload the garments on trolley.

Fourth Step: - Hydro extractor machine.

Hydro extractor machine is used to remove excess water from the garments.

Fifth Step: - Dryer machine.

After hydro extraction the garments are sent to drying m/c for complete drying.

Sixth Step: - Quality & Delivery.

After drying the garments go to quality checking & rectify washing fault and then

good one delivery.

65. Write the tinting process (dying) by reactive dyes.

Tinting by Reactive dye:

First Step: - After different wet processing i.e. Acid wash, Stone wash, Enzyme wash,

Stone enzyme wash, Bleach wash take 60 kg garment for Tinting & over dyeing.

Water at L: R = 1: 7.... 420 Liter

Run the Machine.

Temperature................. 60°c

Reactive Red –

Reactive Yellow - Brown ......... 100 gm.

Reactive Black -

Leveling agent - at 0.5 gm / liter.......240 gm.

Salt - at 20 gm / liter........... 8.40 kg.

Soda ash at 10 gm / liter ............ 4.20 kg.

Time................................ 20 to 30 mts.

Drop the liquor.

Second Step: - Fixing.

32

Batch size.................... 60 kg.

Water at L: R = 1 : 8 .............. 480 Liter

Run the Machine.

Temperature.................................. 50°c

Add fixing agent at1 gm / liter..... 480 gm.

Time............................................. 10 mts.

Drop the liquor.


Batch size.................... 60 kg.

Water at L: R = 1: 7.............. 420 Liter

Add Acetic Acid at 0.6 gm/liter ............ 250 gm.

Add Cationic softener at 1 gm/liter ...... 420 gm.

Time................................ 10 mts.

Drop the liquor.

Then unload the garments on trolley



Fifth Step: - Dryer machine.

After hydro extraction the garments are sent to drying m/c for complete drying.

Sixth Step: - Quality & Delivery.


good one delivery.

66. What is standard blowing angle for sand blasting?

The standard blowing angle for sand blasting is 10-20o .

33

67. What are the main ingredients for sand blasting process?

The main ingredients for sand blasting process are-

– Aluminum oxide(Al2O3)– Sand blasting gun– Sand blasting bed– Sand blasting chamber– Hand gloves– Musk – Uniform– Helmet – Ear flag

68. Write the approximate production / hrs / gun of sand blasting.

The approximate production /hrs/gun varies from 25-50 pcs. garments depend on the area, extent to fading.

69. Write the name of protective items for health in the sand blasting process.

Protective items for health in the sand blasting process are-

– Hand gloves– Musk – Helmet– Ear flag and – Uniform

34

70. What do you mean by P.P spray?

P.P spray is doing in Denim, Twill, Poplin, Corduroy, generally middle of wash i.e. after enzyme wash, stone enzyme wash.

If need some particular area more white then we are doing P.P spray. After P.P spray need to neutralize the garment Sodium Metabisulphite , then

whitish effect come on respective area of garments. Standard stock solution for P.P. spray is 0.4% i.e. 100 liter water 400 grams

potassium permanganate. P.P. spray is done nozzle and has a switch to start & stop. For spray on garments need dry air which is supplied from screw compressor and

P.P. stock solution tank. P.P. spray in garment need on chamber, different types of dummy and exhaust fan.

71. What do you mean by P.P sponging?

P.P sponging is doing in Denim, Twill, Poplin, corduroy generally middle of wash i.e. after enzyme wash, stone enzyme wash.

If need some area more white then we are doing P.P. sponging. After P.P. sponging sodium metabisulphite is used to neutralize the garments. Standard stock solution for P.P. sponging is 0.4% i.e. 100 liter water 400 grams

potassium permanganate. P.P sponging is done manually. By foam/ fabric pcs wet in p.p.stock solution and rubbing particular area of

garments as result fading affects on garments. P.P. sponging operator must be used Hand gloves, Helmet, Mask, Ear plug &

uniform for their safety.

72. What is the purpose of P.P. spray?

The purpose of P.P spray is to create more fading affect on particular area of garments.

35

73. What is the purpose of P.P. sponging?

The purpose of P.P sponging is also to create more fading affect on particular area of garments.

74. What do you mean by whiskering?

Whiskering: A process of whickering denim/Canvas/Twill/Corduroy garment is deserved

below:-

By rubber pattern & sand blasting gun. i.e. rubber pattern set on garment and sand

through over the pattern by nozzle.

By manually created whisker by sand paper on garment.

Make a pattern just like pacific whisker and put it inside the garment, then rubbing

front side of garment over pattern,

By p.p. spray and p.p. sponging on garments.

Mentioned all process is done on garments fadding effect occurs in garments.

75. What do you mean by tagging?

Tagging: Tagging is doing on garment for fashion and value added fashion wear.

Tagging is doing by Tagging machine.

Tagging is doing also by needle & thread & manually.

After wash upper portion of garment shows crease marks and inside of tagging

occurs Dark shade.

76. What do you mean by Grinding?

Grinding:

Grinding is doing on garment for mainly old/used look appearance & fashion.

Grinding is doing on hem, pocket edge, west belt, pocket opening, and pocket pluf

of garments.

Grinding is done by grinding machine, sand paper by manually.

36

77. What do you mean by destroy?

Destroy:

Destroy is newly fashion on garments.

Destroy is doing by manually.

Different types of machine used for destroy the garments – Grinding machine,

Emery cloth, Hacksaw blade, Knife etc.

When destroy is done one garment, it seems to be long time used effect.

78. What types of fabrics are suitable for permanent wrinkle?

Fabrics which are suitable for permanent wrinkle are-

Generally Denim, Twill, Canvas, Poplin, knit and Polyester fabrics are suitable for permanent wrinkle.

79. Write the chemical name for permanent crinkle on the garments.

For permanent wrinkle we use resin on the garments which must be dilute with water. It might be 80% water and 20% resin.

80. What is the standard temperature for permanent crinkle on oven?

The standard temperature for permanent crinkle on oven is 140- 160oc.

81. What is the standard time is required for permanent crinkle in the oven?

The standard time is required for permanent crinkle in the oven is 20-40 mintues.

37

82. What do you mean by overall crinkle?

OVERALL WRINKLE PROCESS:

Generally overall wrinkle is doing on garments after all types of wet process & dry

process.

Overall wrinkle is done on the garment made from all types of fabrics like, Denim,

Twill, Canvas, Poplin, Corduroy, Knit, Polyester, Viscose & Nylon etc.

Now tie the whole garment in tight position by thread.

For overall wrinkle, we are used resin in washing machine with water and run tied

garments for 5 to 10 minutes at 50°c temperature.

Then unload the garments from washing machine to trolley for hydro extractor to

remove the excess water.

Open the tie or cut the thread.

Now hanger the garments into the hanger trolley. Trolley capacity appreciates 80-

100 pcs garments.

Then trolley with resin treatment garments put inside the Industrial oven.

Set temperature 140°c to 160°c, Time 50-70 minutes.

Start the machine.

When setting time is over, machines are automatically off.

After heating time over garments with hanger will stay 10 minutes for cold in

oven.

Now open the door and trolley with garments out from oven and go to quality

section, checking & delivery.

83. What types of dyes are used for 100% cotton readymade garments?

Dyes used for 100 % cotton readymade garments are-

– Reactive dyes.

– Direct dyes

– Sulpher dyes

38

– Vat dyes

– Azoic dyes

– Pigment dyes

84. What do you mean by ready for dying garments?

Ready for dyeing garments means the garments in which precaution steps for dyeing has

been already done, i.e. the garments which is ready for dyeing process.

85. Write the main / first step of ready for dyeing process.

First step of ready for dyeing process:

Desizing process:

Batch size.................... 60 kg cotton shirt (grey).

Water at L: R = 1: 8.............. 480 Liter.

Running the machine.

Temperature .................. 90°c.

Detergent at 2% ............ 1.2 kg.

Caustic at 8% ................ 4.8 kg.

Soda Ash at 5% ............ 3.00 kg.

Hydrogen Peroxide (H2o2) at 12%... 7.20 kg.

Stabilizer at 5% ............ 3.00 kg.

Time............................. 60 to 80mts.

Drop the liquor

86. What do mean by super white process?

Super white:

Normally done on the garments made from cotton grey fabric.

The garments after wash become extremely white.

Washing is carried out in steps:---

39

WASHING PROCESS:-

First Step:-

Batch size.................... 60 kg cotton shirt (grey).

Water at L: R = 1: 8.............. 480 Liter.


Temperature...................................... 90°c.

Detergent at 2% (owf)........................ 1.20 kg.

Caustic Soda at 8% (owf).................... 4.80 kg.

Soda Ash at 5% (owf).......................... 3.00 kg.

Hydrogen Peroxide (H2o2) at 12% (owf)...7.20 kg.

Stabilizer at 5% (owf)........... 3.00 kg.

Time................................ 70 -80 mts.

Drop the liquor.

Second Step:-

Batch size......................... 60 kg.

Water at L: R = 1: 8........ 480 Liter.


Temperature ...................... 90°c.

Detergent at 2%................. 1.20 kg.

Caustic at 4% ..................... 2.40 kg.

Hydrogen Peroxide (H2O2) at 10%... 6.00 kg.

Stabilizer at 2%................. 1.20 kg.

Time................................... 40 ---- 70 mts.

Drop the liquor.

Third Step: - HOT WASH.

Batch size.......................... 60 kg.

Water at L: R = 1: 8 .......... 480 Liter.


Temperature ...................... 50°c.

40

Time................................... 5 mts.

Drop the liquor.

Fourth Step: - NEUTRAL.

Batch size....................... 60 kg.

Water at L: R = 1: 8..... 480 Liter.

Acetic Acidat 1%........... 600 gm.

Time................................ 5 mts.

Drop the liquor.

Fifth Step:-

Batch size .............................. 60 kg.

Water at L: R = 1: 7.............. 420 Liter.

Machine Start.

Optical Brightener 0.5%........ 300 gm.

Time ....................................... 5 mts.

Drop the liquor.

Sixth Step: - Softening

Batch size ........................................ 60 kg.

Water at L: R = 1: 7 .................. 420 Liter.

Non-ionic Softener at 0.4% ............ 240 gm.

Micro Emulsion silicon at 0.4%..... 240 gm

Time ........................................ 5 to 10 mts.

Drop the liquor.

Then unload the garment on trolley.

Seventh Step: - Hydro extractor machine.


Eighth Step: - Drying machine.

Load 50 kg garments to steam dryer.

Temperature set ................ 70°c.

Run about................. 40-45 mts.

41

After run 10 to 15 mts. for cold dry.

Ninth Step: - Quality & Delivery.


good one delivery.

87. Write the chemicals name which are used for super white process.

Chemicals which are used for super white process are-

– Detergent – Caustic soda(NaOH)– Soda ash(Na2CO3)– Hydrogen per oxide(H2O2)– Stabilizer– Optical Brightener– Non – ionic Softener– Micro Emulsion silicon– Acetic acid

88. Write the dyeing bath process of pigment dyes for cotton readymade garments.

PIGMENT DYEING PROCESS AT EXHAUST:

First Step: - Cationizing.

Batch size.................... 60 kg ready for dyeing garments.

Water at L: R = 1: 8.............. 480 Liter.

Machine running.

Add Cationizing (Acramin prefix K)at 4%...... 2.40 kg.

Machine run at room temperature for .......... 10 mts.

After 10 mts run, temperature raise to 60°c.

Now run.......................... 20 mts.

Drop the liquor.

42

Second Step: - HOT WASH.

Batch size....................... 60 kg.

Water at L: R = 1: 8..... 480 Liter.


Temperature ...................... 60°c.

Time ................................. 5 mts.

Drop the liquor.

Third Step: - Dyeing

Batch size.................... 60 kg.

Water at L: R = 1: 7.......................... 420 Liter.

Add..... Pigment Red at 3%................ 1800 gm.

Pigment Black at 0.1%............. 60 gm.

Add Acetic Acid at 1cc/liter.................... 420 cc.

Temperature ..................................... 80°c-85°c

Time ................................................. 30 -40 mts

Drop the liquor.

Fourth Step: - FIXING.

Batch size................................ 60 kg.

Water at L: R = 1: 8.............. 480 Liter.

Add Binder at 5% ......................3.00 kg.

Temperature ........................ 30°c - 40.

Time ................................10 - 20 mts.

Fifth Step: - Softening.

Batch size................................... 60 kg.

Water at L: R = 1: 7................. 420 Liter.

Add Acetic Acid at 0.6 gm/liter ... 250 gm.

Add cationic softener at 1 gm/liter.......... 420 gm.

Time................................ 10 mts.

Drop the liquor.

43

Then unload the garments trolley.

Sixth Step: - Hydro extractor machine.


Seventh Step: - Drying machine.



Run about.............. 40-45 mts.


Eighth Step: - Quality & Delivery.


good one delivery.

89. Write the dyeing bath process of Sulpher dyes for cotton readymade garments.

SULPHER DYEING:

First Step: - Cationization.

Batch size ...60 kg garments ready for dyeing.

Water at L : R = 1 : 8 .............. 480 Liter.

Machine running.

Add Cationization (Indosol E-50 liter) at 4%..... 2.40 kg.

Temperature ................... 60°c.

Time....................... 30-40 mts.

Drop the liquor.

Second Step:- Dyeing

Batch size................................ 60 kg.

Water at L: R = 1: 7.............. 420 Liter

Optical Yellow - 2.50%.......... 1500 gm.

Optical Orange - 0.4%........... 240 gm.

44

Add Salt at 20 gm/liter ............ 8.40 kg.

Temperature....................... 90°c

Time................................ 60 to 70 mts.

Drop the liquor.

Rinse overflow until clear water.


Batch size ............................ 60 kg.

Water at L: R = 1: 7 .......... 420 Liter.

Add Acetic Acid at 0.6 gm/liter ....... 250 gm.

Add cationic softener at 1 gm/liter.. 420 gm.

Time................................ 10 mts.

Drop the liquor.

Then unload the garments trolley.



Fifth Step: - Drying machine.



Run about.............. 40-45 mts.


Sixth Step :- Quality & Delivery.


good one delivery.

90. Write difference between sand blasting and hand scraping.

Difference between sand blasting and hand scraping is given bellow:

Sand Blasting Hand ScrapingAluminum oxide is used of sand blasting. Emery paper is used for hand scraping.Done with the help of sand blasting gun Done with the help of hand.

45

High risk of fabric damage Low risk of fabric damage Hazardous for health. Not hazardous for health

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