Prepared By : Mazadul Hasan sheshirID: 201000040000813th Batch (session 2009-2013)Department : Wet Processing Technology Email: mazadulhasan@yahoo.comBlog : www. Textilelab.blogspot.com (visit)Southeast University Department Of Textile EngineeringI/A 251,252 Tejgaon Dhaka Bangladesh Prepared By :

Total Textile Process at a Glance

School of Science and Engineering, Department of Textile EngineeringSoutheast University

IntroductionThe stability of color or its fastness is one of the most important requirements of valuable customers. Colour fastness of a dyed goods means the resistance power of a dyed goods against any hazards.

The color textiles show different resistance power to different agencies such as light, wash, rubbing, perspiration, water, bleach, acid, alkali etc.

There are many types of testing of color fastness. But in the industry the fastness test is done according to the buyer requirement.Submitted to : Dr. Zulhas UddinColor fastness of dye goods.*

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

Major Color Fastness TestesColorfastness to WashingColorfastness to Crocking / RubbingColorfastness to PerspirationColorfastness to Hot PressingColorfastness to Dry CleaningColorfastness to Light

Submitted to : Dr. Zulhas UddinColor fastness of dye goods.*

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

Colorfastness to Washing is a method for determining the resistance of the colour of textiles from all kinds of wash in water with soap and detergent. There are different test methods to check the color fastness to washing which is standardized by ISO.

Color Fastness To Wash

TestTemp.( C)Time (mints)Steel ballsChemicalsISO-105-CO140300Soap(5 g/l)ISO-105-CO250450Soap(5 g/l)ISO-105-CO360300Soap(5g/l) +soda ( 2 g/l)ISO-105-CO4953010Soap(5g/l) +soda ( 2 g/l)ISO-105-CO59524010Soap(5g/l) +soda ( 2 g/l)

School of Science and Engineering, Department of Textile EngineeringSoutheast University

Test Procedure (Color fastness to wash) APPARATUS AND MATERIALS:Gyro wash m/c (Wash-wheel & Stainless steel container)Stainless steel ball(diameter =0.6cm,wt. =1mg) Multi-fiber fabric Thermometer (0-100) CSewing m/cDryer ISO type grey scale for changing shadeISO type grey scale for stainingColor matching cabinet (light box).

Submitted to : Dr. Zulhas UddinColor fastness of dye goods.*

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

Sample Preparation:If the textile to be tested in fabric: Cut the sample fabric 10cm 4 cm and make sure all colors are included (if necessary use additional specimens) in it. Sew it along all four edges with the same size of multi fiber fabric. This is the composite test specimen.If the textile to be tested is yarn or loose fiber: Take a mass of yarn or fiber approximately equal to of the combined mass of the adjacent fabrics, then place between a 10cm 4 cm piece of multi fiber fabric and a piece of same size non dye able fabric and sew them along all four sides. This is the composite test specimen.

According to ISO RECOMMENDATION NO3 (ISO 105 C03):The composite specimen is treated in a wash wheel or an equivalent apparatus at 60 2C (1403.6F) for 30 mints using the color fastness test detergents 77(ISO Std soap) 5 g/l and 2 g/l soda ash to a given liquor ratio of 50:1.

Finally we decreased the temperature and washed with cold water and dry them.

Submitted to : Dr. Zulhas UddinColor fastness of dye goods.*

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

EVALUATION:Compare the contrast between the treated and untreated sample with the changing grey scale and staining of color in the adjacent multi-fiber fabric with the staining grey scale.This assessment is done in a color matching cabinet under standard lighting of D65 (Artificial day light).

Submitted to : Dr. Zulhas UddinColor fastness of dye goods.*Fig: Grey scale

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

Format of test ReportSubmitted to : Dr. Zulhas UddinColor fastness of dye goods.*

Description of testTest resultColor fastness to washingMethod followed: ISO-105-C03GRADE

Color change in shade3-4Staining in Acetate4Staining in Cotton4Staining in Nylon4Staining in Polyester4Staining in Acrylic4Staining in Wool4

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

Color Fastness To Rubbing Submitted to : Dr. Zulhas UddinColor fastness of dye goods.*

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

Equipment that needed for measurement:Crock Meter. Cotton Rubbing Cotton. Grey Scale Stop Watch Color Matching Cabinet.

Submitted to : Dr. Zulhas UddinColor fastness of dye goods.*

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

Size of Fabric:Submitted to : Dr. Zulhas UddinColor fastness of dye goods.*You will need to have 14 Cm 5 Cm pieces of textile fabric sample (one warp direction/ wale direction and other weft/ course direction).

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

a) Lock the test specimen (textile sample) onto the base of the crock meter. b)Using the spinal clip, set 5 Cm 5Cm of the white cotton fabric to the finger of the crock meter. c)Lower the covered finger on the test sample. d) Turn hand crank at the rate of the one turn per second. e)Remove the white rubbing test cloth and e valuate with grey scale.Submitted to : Dr. Zulhas Uddin*Color fastness of dye goods.Test Procedure of Color Fastness To Rubbing:

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

Evaluation

In this stage compare the contrast between the treated and untreated white rubbing cloth with grey scale and rated 1 to 5.Submitted to : Dr. Zulhas UddinColor fastness of dye goods.*

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

Color Fastness to light

This test measures the resistance to fading of dyed textile when exposed to day-light.The test sample is exposed to light for a certain time(24 hrs, 36 hrs,48 hrs, 72 hrs, etc) or by customer demand and compare the change with original unexposed sample.The changes are assessed by Blue Scales (1-8).

Submitted to : Dr. Zulhas UddinColor fastness of dye goods.*

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

Procedure

The sample is cut and should be exposed (1/2 covered and 1/2 exposed) together with standard dyed wool samples (1-8).The standard and the specimen mounted in a frame.The composite sample must be protected from rain.Submitted to : Dr. Zulhas UddinColor fastness of dye goods.*

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

Evaluation:Evaluation is made numerically by European/American blue Scale (1-8).Submitted to : Dr. Zulhas UddinColor fastness of dye goods.*

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

Color Fastness to Perspiration:Principle: The garments which come into contact with the body where perspiration is heavy may suffer serious local discoloration. This test is intended to determine the resistance of color of dyed textile to the action of acidic and alkaline perspiration. Submitted to : Dr. Zulhas UddinColor fastness of dye goods.*Principle: The garments which come into contact with the body where perspiration is heavy may suffer serious local discoloration. This test is intended to determine the resistance of color of dyed textile to the action of acidic and alkaline perspiration.

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

Equipment:

Perspiration TesterOven, maintained at 372C temperatureMultifiber test fabricGrey ScaleColor matching chamberAcidic and Alkaline solutionGlass or Acrylic plateWeight etcSubmitted to : Dr. Zulhas UddinColor fastness of dye goods.*Principle: The garments which come into contact with the body where perspiration is heavy may suffer serious local discoloration. This test is intended to determine the resistance of color of dyed textile to the action of acidic and alkaline perspiration.

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

Sample size: 10 cm * 4 cmTest Procedure:Wet-out the composite test sample in mentioned alkaline or acidic solution at room temperature. M:L ratio 1:50 and leave for 30 minutes.Pour off excess solution and place the composite sample between two glass plate or acrylic plate under a pressure of 4.5 Kg and place in an oven for 4 hours at 372C temperature. Remove the specimen and hang to dry in warm air not exceeding 60C.Submitted to : Dr. Zulhas UddinColor fastness of dye goods.*Principle: The garments which come into contact with the body where perspiration is heavy may suffer serious local discoloration. This test is intended to determine the resistance of color of dyed textile to the action of acidic and alkaline perspiration.

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

EvaluationSubmitted to : Dr. Zulhas UddinColor fastness of dye goods.*Principle: The garments which come into contact with the body where perspiration is heavy may suffer serious local discoloration. This test is intended to determine the resistance of color of dyed textile to the action of acidic and alkaline perspiration. Evaluation is done by Grey Scale in a color matching cabinet and rated from 1 to 5.

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

Colorfastness to Hot Pressing Principle

Determination of the resistance of the color of dyed textiles to ironing and pressing on the hot cylinderSubmitted to : Dr. Zulhas UddinColor fastness of dye goods.*

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

Apparatus and Materials:Heating device that can put a pressure on the specimen of 4kpa.A smooth asbestos sheet (3-6 mm thickness)Wool flannelA piece of undyed, bleached and mercerized cotton clothGrey scalesStandard color matching cabinetDistilled waterSubmitted to : Dr. Zulhas UddinColor fastness of dye goods.*

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

Test specimen:Cut 10cm x 4cm specimen from each fabric sampleSubmitted to : Dr. Zulhas UddinColor fastness of dye goods.*

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

Test Procedure:Condition the sample in standard atmosphere of 21 1 and 65 2 RH before testing.Then select the specified temperature as follow: 110 2 ,150 2 , 200 2 Dry pressing: a. Place the dry specimen on top of the cotton cloth covering the wool flannel padb. Lower the top plate of the heating device and leave the test specimen for 15 sec at the recommended pressing temperatureSubmitted to : Dr. Zulhas UddinColor fastness of dye goods.*

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

Damp Pressing

A.Repeat iii (a) and soak to 100% pick-up of a piece of cotton adjacent fabric in distilled water.B.Place the soaked cotton fabric on top of the dry test specimen and repeat iii (b)

Submitted to : Dr. Zulhas UddinColor fastness of dye goods.*

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

Wet Pressinga) Soak the test specimen and a piece of cotton adjacent fabric in distilled water and squeeze it to maintain 100% pick up.b) Place the wet test specimen on top of the dry cotton cloth covering the wool flannel pad and repeat iii (b)

Submitted to : Dr. Zulhas UddinColor fastness of dye goods.*

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

Evaluation

a) Numerically rate the color change immediately after testing and again 4 hrs. in std atmosphere and std light using the Grey Scale(1-5)b) Numerically rate the staining of the more heavily stained side of the cotton adjunct fabric under std light using Grey Scale (1-5)Submitted to : Dr. Zulhas UddinColor fastness of dye goods.*

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

Test Reporti. Mention the testing temperature .ii. Test condition (dry, damp, wet)iii. Numerical rating after testing and after 4 hrsiv. Report the numerical rating for the staining of cotton adjacent fabric Submitted to : Dr. Zulhas UddinColor fastness of dye goods.*

Color fastness of dye goods.

School of Science and Engineering, Department of Textile EngineeringSoutheast University

School of Science and Engineering, Department of Textile EngineeringSoutheast University

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