textile testing vjti

8/7/2019 textile testing vjti

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Textile Testing

Presented By:Nisha Sangle

Ankita Desai

Poonam Patil

Gayathri Rangnathan


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Importance of testing

Testing is a valuable aid for textile production, distribution,

and consumption.1.Research Work: Test of the textiles helps the authority to decide the

next route.

2. Selection of Raw Materials: During textiles testing the variation of a

fibre or fabric i.e. length, color, fineness (in case of textile fibre), threads

per inch, cover factor (in case of textile fabric), is detected properly.

Thus proper raw materials are selected properly.

3. Process Control: Certain standard level should be maintained to

control increase of waste, rise of cost etc. By textile testing we can easily

detect the faults of machinery and materials during test of textiles.

4. Process Development: Research Institute, pilot plants can achieve

process development through testing or exact investigation into better,

cheaper and quicker methods.

5. Search for effective productivity: Continuous test of the textiles

results a enhanced and efficient output of the production.

6. Specification Test: To meet up the customer requirement,

specification is very useful. In this concept, testing plays a vital role.


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Testing ofTesting ofwhat?what?

FibresFibres

yy YarnsYarns

yy FabricsFabrics

yy Finished productsFinished products

-- fashion & everyday clothingfashion & everyday clothing

-- protective clothing (fire protectionprotective clothing (fire protection etcetc))

-- home furnishings (bedhome furnishings (bed--linen, curtains )linen, curtains )-- industrial (industrial (tyrestyres, filters, geotextiles ), filters, geotextiles )

-- etcetc


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TestingTestingfor what?for what?

Fitness for purposeFitness for purpose

This usually meansThis usually means measuring measuring

Performance propertiesPerformance properties

Physical/Physical/mechanimechani

ChemicalChemical


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WhyWhytest?test?

Quality Control/ConsistencyQuality Control/Consistency

You cant control if you cant measureYou cant control if you cant measure

yy Research & DevelopmentResearch & Development

Is the new better than the old?Is the new better than the old?

yy Sales & MarketingSales & Marketing

Our product is 50% stronger than theirs!Our product is 50% stronger than theirs!

yy OtherOther

EgEg. forensics & crime investigation. forensics & crime investigation


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Testing is normally carried outTesting is normally carried out

according to aaccording to a

STANDARDSTANDARD

What does that mean?What does that mean?


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A standard is like a recipeA standard is like a recipe

a set of detailed instructions a set of detailed instructions

Ensures consistency.Ensures consistency.Results can be communicated widely.Results can be communicated widely.

Understood by any trained person.Understood by any trained person.


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WhatWhatdo standards cover?do standards cover?

yy Test methodsTest methods

yy Specifications of constructionSpecifications of construction

yy Performance criteriaPerformance criteria

WhoWho sets them?sets them?

yy Buyers (Buyers (egeg. retailers). retailers)

yy ManufacturersManufacturers

yy Government agenciesGovernment agencies

yy Standards organisationsStandards organisationsBSI, ISO, ASTM, AATCC ...BSI, ISO, ASTM, AATCC ...


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Colorfastness

testing


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What is it ?

It is the resistance of a textile material to color change or

transfer of color onto an adjacent material.

It is the property of a dye or print to retain original hue.

Low colourfastness is a result of exposure to any bad

environmental conditions

Fading occurs due to degradation of dye molecules.


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Whya necessity?

Any fabric needs an improvement in their colorfastness

properties.

Consumer demand for excellent colorfastness properties

of apparels.

Thus this testing is of great concern for apparel gradeindustries.

Important for all grade of apparels men, women and

children

Helps manufacturers to find out the lacunas in their

methods.


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How is it done?

Colour fastness test is used to ensure the colour quality for

example when washed, exposed to light, rubbed etc.

In most colour fastness tests the sample material is combined

with multifiber fabric and the desired test is performed

(washing, exposure to light, perspiration)

Staining of the multifiber fabric and the colour differentiation

of the sample material is evaluated by using grey scale.

These tests are performed based on certain standardized

methods given by AATCC and ISO

. Some buyers do have their own test methods also.


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Colorfastness to crockingAATCCTest Method 8

ISO 105-X12

This test determines the transfer of color from a textile surface

to any adjacent material principally by rubbing.

Wet and dry evaluation is typically performed.

A specimen of the textile are rubbed with a dry rubbing clothand with a wet rubbing cloth

Colour transferred on to the white test cloth is assessed by a

comparison with the Grey Scale for Staining or the Chromatic

Transference Scale


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The Crock meter


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Colorfastness to perspirationAATCCTest method-15

ISO105 E04

This test helps in determining the action of all kinds of human

body perspiration to the colorfastness of a textile material.

This test is applicable to all kinds of textile material.

Specimens of the textile in contact with adjacent fabrics or

multifibres are wet out in simulated solutions, drained and

placed between two plates under a specified mechanical

pressure in a per-spirometer t elevated temperatures.

Later the change in color of each specimen and the staining of

the adjacent fabrics are assessed.


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The Per-spirometer


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Colorfastness to launderingAATCCTest method 61

ISO 105C

06

This method is for determination of colourfastness of textile

materials irrespective of their composition to the action of

soap solution at varying temperatures for a specified period.

This test method accounts to 5 home launderings.

A specimen of textile in contact with pieces of specified

adjacent fabrics is mechanically agitated in soap solution,

rinsed and dried

The abrasive action is a result of the frictional effects of fabric

against canister, the low liquor ratio and the impact of thesteel balls on the fabric.


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The launder-o-meter


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Colorfastness to lightAATCCTest method 16

This test determines the resistance of textile materials tomechanical degradation or fading of fabric dyes and/or printsdue to light which is an important property.

Light, particularly in the UV region of the spectrum, can cause

harm by changing the structure of the dye molecules in afabric which causes fading.

Fabrics are exposed either out doors in a standard test frameor in a machine that simulates sunlight

AATCC Blue Wool Light fastness Standard, one of a group of

dyed wool fabrics for use in determining the amount of lightexposure of specimens during light fastness testing.

The comparison between exposed portion to the maskedcontrol or to an unexposed original portion of the specimen isdone, as specified in a material specification


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Evaluation The result of a colourfastness test is rated by visually

comparing the difference in colour or the contrast between

the untreated and treated specimens with the differences

represented by the Scale

The evaluation procedure includes use of grey scales,chromatic color transference scale, and AATCC standard blue

wool for visually assessing the color change or staining.

The overall difference, or contrast, between original and

tested specimens is the basis for the evaluation

Staining of adjacent fabric or multifibre fabric is also evaluatedin a similar manner.

The rating is given from 1-5


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Grey scale for staining Grey scale for color change


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Thankyou

textile testing vjti

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