denim wash ppt

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Value Addition in Denim Value Addition in Denim through its washing effects through its washing effects at Shahi Exports Pvt. Ltd at Shahi Exports Pvt. Ltd Presented By: Presented By: Kumari Priyanka Kumari Priyanka Roll No- 13 Roll No- 13

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Page 1: Denim Wash Ppt

Value Addition in Denim through Value Addition in Denim through its washing effectsits washing effects

at Shahi Exports Pvt. Ltdat Shahi Exports Pvt. Ltd  

Presented By:Presented By:Kumari PriyankaKumari Priyanka

Roll No- 13Roll No- 13

Page 2: Denim Wash Ppt

IntroductionIntroduction

Denim washing is know as one of the Denim washing is know as one of the finishing treatment that has vast usage finishing treatment that has vast usage because of creating special appearance because of creating special appearance and updating clothesand updating clothes

There is different methods of denim There is different methods of denim washing.washing.

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DENIM WASHINGDENIM WASHING

Aesthetic finish Aesthetic finish Dry denim-Not washed after dyeingDry denim-Not washed after dyeing Washed denim-Natural distressing of dry denim Washed denim-Natural distressing of dry denim

is attempted to replicateis attempted to replicate

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WHEN IT STARTED?WHEN IT STARTED?

The concept of washing the Denim jeans was The concept of washing the Denim jeans was started by Jack Spencer for the brand Lee.started by Jack Spencer for the brand Lee.

Stone-wash was first started by Francois Stone-wash was first started by Francois Girbaud.Girbaud.

The concept of sandblasting was started in The concept of sandblasting was started in 1988 by a number of branded companies in 1988 by a number of branded companies in Italy.Italy.

Page 5: Denim Wash Ppt

On the base of chemical use

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TYPES OF DENIM WASHESTYPES OF DENIM WASHES

1. Chemical washes1. Chemical washes

-  Denim bleaching-  Denim bleaching

-  Enzyme wash-  Enzyme wash

-    Acid wash-    Acid wash

2. Mechanical washes2. Mechanical washes

-  Stone wash-  Stone wash

-  Microsanding -  Microsanding 

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CHEMICAL WASHESCHEMICAL WASHESDENIM BLEACHDENIM BLEACH

Strong oxidative bleaching agent such as Strong oxidative bleaching agent such as sodium hypochlorite or potassium sodium hypochlorite or potassium permanganate.permanganate.

Bleaching methodsBleaching methods Bleaching effectBleaching effect

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Process cycle:Process cycle:

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Limitations:Limitations:

Process is difficult to control Process is difficult to control Problem of yellowing Problem of yellowing Required antichlor treatment Required antichlor treatment Causes corrosionCauses corrosion Harmful to human health Harmful to human health Source of environmental pollution Source of environmental pollution

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ENZYME WASHENZYME WASH

Application of organic enzymes Application of organic enzymes Easy to stop the action of enzymesEasy to stop the action of enzymes Environment friendly wash Environment friendly wash

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Limitations:Limitations:

Garment load size of the machine is limited.Garment load size of the machine is limited. Post treatment required.Post treatment required.More advantages than disadvantages:More advantages than disadvantages: Soft handleSoft handle More reproducible resultsMore reproducible results Increased lusterIncreased luster Less corrosiveLess corrosive Less damage to seamsLess damage to seams Less wear & tear of machineryLess wear & tear of machinery Applicable to cotton and its blendsApplicable to cotton and its blends

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  ACID WASHACID WASH

Pumice stones presoaked in Pumice stones presoaked in a solution of sodium a solution of sodium hypochlorite or potassium hypochlorite or potassium permanganate.permanganate.

Non-uniform contrast.Non-uniform contrast.

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Process cycleProcess cycle

Page 14: Denim Wash Ppt

Results depends on:-Results depends on:-

-Fabric -Fabric -Chemical used(conc.) -Chemical used(conc.)

-Stone(quantity) -Stone(quantity) -Machine used -Machine used

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LimitationsLimitations  

Yellowing; residual manganeseYellowing; residual manganese

Remedy:Remedy:

Using ethelene-diamine-tetra-acetic acid Using ethelene-diamine-tetra-acetic acid as chelating agent. as chelating agent.

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MECHANICAL WASHESMECHANICAL WASHESSTONE WASHSTONE WASH

Tumbled with pumice stonesTumbled with pumice stones Variations in composition, hardness, size, shape Variations in composition, hardness, size, shape

and porosity make these stones multifunctional. and porosity make these stones multifunctional.

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Selection of stoneSelection of stone According to the end product & effect required.According to the end product & effect required. Large, hard stones last longer and may be suited for Large, hard stones last longer and may be suited for

heavy weight fabrics only.heavy weight fabrics only. Smaller, softer stones would be used for light weight Smaller, softer stones would be used for light weight

fabrics and more delicate items.fabrics and more delicate items. Stone wt. /fabric wt. = 0.5 to 3 /1 Stone wt. /fabric wt. = 0.5 to 3 /1

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LimitationsLimitations

Outcome of a load of jeans is never uniform.Outcome of a load of jeans is never uniform. Damage to wash machineries and garment due Damage to wash machineries and garment due

to stone to machine abrasion.to stone to machine abrasion. Increase in labor to remove stone particles from Increase in labor to remove stone particles from

finished garments.finished garments. Water pollution during disposal of used liquor.Water pollution during disposal of used liquor.

  

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MICROSANDINGMICROSANDINGThere are 3 ways for this technique: There are 3 ways for this technique: Sandblasting Sandblasting Machine sanding Machine sanding Hand sanding or hand brushing Hand sanding or hand brushing

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Used in various ways:- Flat surfaces (tables, ironing boards)- On the dummy (inflatable dummies, sometimes standing, sometimes flat, sometimes 'seated')- Various templates can be used to create a 3D effect

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SAND BLASTINGSAND BLASTING

This technique is based This technique is based on blasting an abrasive on blasting an abrasive material (mostly sand) in material (mostly sand) in granular, powdered or granular, powdered or other form through a other form through a nozzle.nozzle.

It is purely mechanical It is purely mechanical process.process.

It is a water free It is a water free process.process.

Variety of distressed or Variety of distressed or abraded looks possible.abraded looks possible.

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product lookprocess

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MACHINE SANDINGMACHINE SANDING

In this fabric treatment process, a In this fabric treatment process, a series of cylindrical rolls in a horizontal series of cylindrical rolls in a horizontal arrangement, either wrapped with an arrangement, either wrapped with an abrasive paper or chemically coated abrasive paper or chemically coated with an abrasive. with an abrasive.

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HAND SANDING OR HAND HAND SANDING OR HAND BRUSHINGBRUSHING

Use of sandpaper to Use of sandpaper to abrade surface.abrade surface.

Variety of looks and Variety of looks and designs can be designs can be created. created.

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WHISKERINGWHISKERING

Also known as Cat's Also known as Cat's Whiskers.Whiskers.

Crease lines around the Crease lines around the crotch. crotch.

Knee whiskers. Knee whiskers. Honeycombs. Honeycombs. Industrially done using Industrially done using

different techniques.different techniques.

Page 26: Denim Wash Ppt

Materials & MethodologyMaterials & Methodology

This is the general processing cycle which This is the general processing cycle which I analyses in the company for all the four I analyses in the company for all the four samplessamples

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Load garment & Stone

Desize Rinse

Soften Rinse Stone Wash

Tumble Dry Unload Extract

Page 27: Denim Wash Ppt

Following Wash are Applied in the Following Wash are Applied in the Samples:Samples:

Dark Stone WashDark Stone Wash Mid Stone WashMid Stone Wash Super Stone WashSuper Stone Wash Ice WashIce Wash

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Page 28: Denim Wash Ppt

Result & DiscussionResult & Discussion

Swatch No Type Shade Result

Sample 1 Dark Stone Dark Good

Sample 2 Mid Stone Medium Good

Sample 3 Super Stone Light Good

Sample 4 Ice Wash Whitish Blue Good

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Page 29: Denim Wash Ppt

Swatch No Type Test Done Result

Sample 1 Dark Stone 1. Shrinkage2. Shading..

Good

Sample 2 Mid Stone 1. Shrinkage2. Shading..

Good

Sample 3 Super Stone 1. Shrinkage2. Shading..

Good

Sample 4 Ice Wash 1. Shrinkage2. Shading..

Good

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Page 30: Denim Wash Ppt

ConclusionConclusion Denim is unique in its singular connection Denim is unique in its singular connection

with one color. The warp yarn is with one color. The warp yarn is traditionally dyed with the blue pigment traditionally dyed with the blue pigment obtained from indigo dye. The durability of obtained from indigo dye. The durability of indigo as a color and it’s darkness of tone indigo as a color and it’s darkness of tone made it a good choice, when frequent made it a good choice, when frequent washing was not possible. The different washing was not possible. The different tones are made in the garment by using tones are made in the garment by using different type of stone wash like Dark stone, different type of stone wash like Dark stone, Mid stone, Light stone, Ice wash.Mid stone, Light stone, Ice wash.

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Page 31: Denim Wash Ppt

Thank You!!Thank You!!

Page 32: Denim Wash Ppt

Typical Results from Lean Conversions

Lead Time ReductionLead Time Reduction

Productivity IncreaseProductivity Increase

WIP ReductionWIP Reduction

Quality ImprovementQuality Improvement

Space UtilizationSpace Utilization

00 2525 5050 7575 100100

Percentage of Benefits AchievedPercentage of Benefits Achieved