Raw Cotton Qulity For Spinning Mills

PROBLEMS ASSOCIATED WITH PROCESSING OF RAW COTTON FROM DIFFERENT ORIGIN Bangladesh is almost entirely dependent on imported raw cotton as the basic raw material for its spinning mills...

RAW COTTON QULITY FOR SPINNING

MILLS

Prepared By : Mazadul Hasan sheshir ID: 2010000400008

13th Batch (session 2009-2013) Department : Wet Processing Technology Email: mazadulhasan@yahoo.com

Blog : www Textilelab.blogspot.com (visit)

Southeast University Department Of Textile Engineering I/A 251,252 Tejgaon Dhaka Bangladesh

Prepared By :

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In SIM Group, they use only cotton fiber They produce low count yarns about 7-20 Ne So they used different types of wastage Mostly used raw cotton brand are Indian Cotton, Tanzanian Cotton, Brazilian Cotton etc Different types of raw cotton and wastage are:-

Raw Materials Used:

Fig: Pneumafil

Fig: Doffing-1

Fig: Doffing-2

Fig: Flat Strip

Fig: Roving Crash

Country of origin Weight(in KG/Bale) Cost per Kg(TK)

PROBLEMS ASSOCIATED WITH PROCESSING OF RAW COTTON FROM DIFFERENT

ORIGIN

Bangladesh is almost entirely dependent on imported raw cotton as the basic raw material for its spinning mills

Cottons of following growth are used in Bangladeshi Spinning mills:

 Central Asia ( Uzbekistan , Turkmenistan , Tajikistan , Kazakhstan )

 South Asia ( India , Pakistan )

 China

 Middle East ( Syria , Turkey , Yemen )

 West Africa ( Ivory Coast , Cameroon , Chad , Senegal )

 Southern Africa ( Malawi , Zambia , Zimbabwe )

 Northern Africa ( Sudan , Egypt )

An average quality results of cotton from different origin are shown in table 1

& 2

Processing Advantages & Problems of cotton of different origin:

CIS:

Advantages:

 Consistent in quality

 Good Micronaire Value

 Low Short Fibre Content

 Low Trash Content

 Good Maturity Ratio

 High Length Uniformity & Very High Spinning Consistency Index

 Good fibre strength

 Better Processing Performance

Problems:

 Recently facing problem with White Specks in Knit Fabric

 Color Contaminants

Advantages:

 Very low contamination

 Low trash content

 Less Blow Room & Carding Waste

Problems:

 High Mic

 High Neps

 Comparatively low strength

 Lower spoiining speed & higher twist level

 High short fibre content & more noil extraction

 Low maturity in some growth

Processing Advantages & Problems of cotton of different origin:

West Africa:

Advantages:

• Good fibre strength , Length & Uniformity

• Low trash content

Problems:

• Comparatively High Short Fibre Content & Immature fibre Content

• Low Maturity Ratio

• High Contamination Problem

Processing Advantages & Problems of cotton of different origin:

Southern Africa:

Advantages:

 Low Neps Content

 Low trash content

 Low Short Fibre Content

 Low Immature Fibre Content

 High Maturity

 Very High Spinning Consistency Index in Zimbabwe Cotton

Problems:

 Mic Range sometimes found very wide

 Some variety , specially in Malawi is not suitable to spin at higher Carding & Spinning speed

Processing Advantages & Problems of cotton of different origin:

Middle East:

Advantages:

 Good Length & Length Uniformity Index

 Low Nep content

Problems:

 Higher Trash Content

 Low Maturity

 High Nep generation at higher carding speed

 Very High Contamination

Processing Advantages & Problems of cotton of different origin:

( For Long Staple Cotton )

USA:

Advantages:

 High fibre & yarn strength

 High Maturity & Uniformity

 Low Trash Content

 Very Low Contamination

Problems:

 Average Mic Is observed to be increasing

 Stickiness in some growth when used 100% Pima

 Comparatively higher Neps content

 Higher Neps Content

 Lower Fibre & Yarn Strength

 Higher Mic

Processing Advantages & Problems of cotton of different origin:

( For Long Staple Cotton )

Middle East :

Advantages:

 Higher Strength

 Higher Length & Length Uniformity Index

 Low Neps Content

Processing Advantages & Problems of cotton of different origin:

( For Long Staple Cotton )

China :

Advantages:

 Very High Length & Length Uniformity

 High Fibre Strength

 High Fibre Elongation

 Low Trash Content

Problems:

 Comparatively Low Maturity , High IFC & Higher Neps Content

 Stickiness problem when processing 100% Chinese Cotton

 High Contamination

Processing Advantages & Problems of cotton of different origin:

( For Long Staple Cotton )

Northern Africa:

Advantages:

 Low Neps Content

 Low Short Fibre Content

 Low Immature Fibre Content

 High Maturity

 Very High Fibre Strength

Problems:

 Comparatively High Micronaire

 High Dust Content

 Color Contamination

Processing Advantages & Problems of cotton of different origin:

( For Long Staple Cotton )

1 Yarn Manufacturing Technology

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