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Wool ResearchAssociation Thane

Welcome youTo

WOOL Science AndTechnology

Visit us at WWW.wraindia.com

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FIBRES

RAW WOOL SPECIFICATION IMPORTANCE

Fibre Diameter Yield Vegetable Matter Staple Length Staple Strength Colour Dark Fibre Style (e.g. tip, crimp, dust)

Raw wool characteristics in order of significance to processing and product quality.

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FIBRES Raw wool characteristics

RAW WOOL SPECIFICATION

Fibre Diameter Primary Property of FibreFiner the better

Yield Clean Wool available for

further processingVegetable Matter Higher VM % affectsFibre Length

Staple Length Determines Fibre LengthStaple Strength Short Fibre % , Noils %

Colour Related to Dyeingproperty

Dark Fibre Shade Variation afterDyeing

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RAW WOOLVegetable Matter

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FIBRES Diameter Measurements Instruments

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Why Finishing ?

To remove unwanted contaminants,

mainly lubricants and anti-staticagents introduced during yarn andfabric productionTo develop and improve fabric

handle and appearance Control the dimensional propertiesof the fabric (relaxation shrinkageand hygral expansion)

To add functional finishes asrequired, to produce shrink-resistance, flame-retardancy, water-proofing, smooth drying and

antistatic properties

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PROCESS WOOLLEN

SYSTEM

WORSTED

SYSTEM

WetFinishing

Inspect (Mend) + +

Pre-set +

Scour + +

Carbonise +

Crab +

Mill Acid/Neutral

Piece dye (+) (+)

Dryfinishing

Stenter dry + +

Inspect + +

Condition + +

Raise +

Crop +

Press + Rotary Decatise + +

Pressure decatise +

Press Rotary +

Sponge +

Inspect + +

Finishing sequences :

Some typical finishing sequences all wool woollen and worsted fabric

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Why Test Textiles ?

The textile article must performproperly during use, and not

deteriorate rapidly.

Testing MaximisesCustomers Satisfaction

Testing therefore provides the basis for

consumer protectionand confidence,factors which can inturn encouragerepeat business

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TOPS / ROVINGS

FIBRE DIAMETERAVERAGE FIBRELENGTHCOLOURNEPS / VEGETABLEMATTER %BUNDLE STRENGTH

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FABRICS

WEIGHT PER SQUAREMETERENDS / PICKSBLENDSCOUNTSTRENGTHWEAVETEARING STRENGTHBURSTING STRENGTH

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CARPETS

CUT PILE WEIGHTTHICKNESSDENSITYD- FACTORSTATIC LOADINGDYNAMIC LOADINGABRASSION RESISTANCE

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KNITWEARCover Factor

Courses / WalesCount of yarnShrinkage

Static & AreafeltingcountTwist

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CHEMICAL TESTS

INVOICE WEIGHTOIL CONTENTSCOLOUR FASTNESSPROOFING CONTENTALKALI & UBSOLUBILITYSHRINKAGE %FLAME RETARDANCY

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& OTHER TEST

FIBRE IDENTIFICATIONCORINGTOG VALUESIRO FASTCREASE RECOVERYSTIFFNESS

PILLING

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NATURAL

DYES INTHE

CARPET

INDUSTRY

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SELECTION OF RAW

MATERIAL

18 Colouring raw

materials short listed

5- to 6 Colouring raw

materials were selected

for natural Dyeing

More than 100 shades

have been developed

To cover full range of

carpet shades