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Yarn Formation/Spinning

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Related Topics ● Yarn Formation Systems: There are

various commonly used

popular Yarn Formation

Systems .Some of them

are Cotton woollen or

worsted,staple,Filament

yarn formation systems.

Als...

● Twist insertion and Different Spinning Techniques: The

new spinning systems

clearly avoid the

limitations produced by

the twist insertion

mechanism. It is

possible to increase the

twist insertion rate ...

● Textile Yarn Types: Details of

Yarn Formation/Spinning

http://www.textileschool.com/School/Spinning/YarnFormation.aspx (2 of 12) [6/10/2012 11:17:18 PM]

YARN

Yarn Formation/SpinningThe Fibre formation process includes

change in shape, structure and

properties of the thermoplastic polymer.

The polymer pellets or granules are fed

into an extruder where, through heating,

their melting temperature is exceeded.

The polymeric melt is then transported,

under pressure, to the spinneret..Yarn

formation methods were originally

developed for spinning of natural fibres

including cotton, linen, wool and silk.

Previous Topic » Yarn Spinning

Next Topic » Yarn Formation

Systems

The thickness of yarn is measured as

Counts. Yarns are made in different

counts like 2’s, 4’s, 10’s, 16’s, 20’s,

24’s, 25’s, 30’s, 34’s, 36’s, 38’s, 40’s,

60’s, 80’s, 100’s, etc. We can consider

like this. 0’s counts are cotton fiber. 20’s

counts yarn is thicker than 24’s yarn.

Likewise 30’s yarn is thicker than 34’s.

types of yarn such as

spun yarn and filament

yarn also different types

of cotton such as Sea

island cotton, Pima

cotton, U.S. cotton,

Asian...

● Construction of Textile Yarn: Yarn

construction being

classified into simple /

conventional yarn,

complex/novelty yarns,

metallic yarns, textured

yarns, bulked/high

bulked yarns and...

● Textile Yarn size/substance:

How to find out the yarn

sizes and popular textile

yarn sizes, techniques

to identify substance of

textile yarn...

● Thread Numbering System: Threads are

usually made up of

several single strands

twisted or plied

together. The

numbering system for

threads has two parts:

Yarn Formation/Spinning

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So when the yarn counts are increasing,

the thickness becomes lesser. We can

see, the higher the counts, the lesser

the thickness.

Yarn prices based on the thickness.

Price of 20’s yarn is lesser than 24’s.

Price of 30’s yarn is lesser than 34’s

yarn. We must know, higher the counts,

higher the prices. There are 2 qualities

of yarn. Combed and Carded.

Combed is superior quality. The cotton

fibers are in different lengths from 0.25

inches to 2.5 inches. According to the

technical parameters, the fibers with

more length are considered to be better.

These long fibers give more evenness

and more strength for yarns. Also the

short fibers are increasing hairiness

whereas the long fibers are decreasing

hairiness in yarns. Hence in order to get

uniformity in fiber lengths, the short

length fibers are to be eliminated from

the long length fibers. For this purpose,

a special process is being done. This

process is called ‘Combing’. Because of

the same longer length of fibers, the

one related to the th...

● Filament Yarn Spinning: For

transforming filament

fibres to yarns involve

processes such as Wet

spinning, Dry spinning,

Melt spinning, Bi-

component spinning, Bi-

constituent s...

● Staple Yarn Spinning: The larger

part of staple fibre,

approx. 33 mio tons are

processed in short

staple spinning. This

part of the spinning

industry therefore is of

great ...

● Ring Spinning:

The Ring Spinning is

the most widely used

form of spinning

machine due to

significant advantages

in comparison with the

new spinning

processes. The ri...

● Arrangement and Schemtics of Ring Spinning: ...

Yarn Formation/Spinning

http://www.textileschool.com/School/Spinning/YarnFormation.aspx (4 of 12) [6/10/2012 11:17:18 PM]

Yarn Formation

Categories

Textile is a type of material composed of natural or synthet...Textile - An introduction

Fiber is a hair-like strand of material. It is flexible and ...The building block of the textile industry - Textile Fibres.

Yarns are continuous strands of fibers that can be woven or ...Textile Yarns

Yarn spinning is the process of manufacturing yarn from diff...

Textile

Fiber

Textile Yarns

Spinning

yarn will be very even with lesser

hairiness. Hence after knitting or

weaving, the fabric will have very even

look.

Carded yarn is inferior in quality. As the

above said ‘combing’ process is not

being done, the carded yarn will be

made of the fibers in different lengths.

Hence the yarn strength will be lesser

than combed yarn. Also carded yarn will

have more hairiness and due to this, the

fabric made with carded yarns will have

more unevenness. Because of this extra

process, the Combed yarn price is

higher than Carded yarn. Also Combed

yarn quality is superior to Carded yarn.

Yarn is continous strand which is made

up of filaments or fibers. It is used to

● Problems and Success factor of Ring Spinning: ...

● Process of Ring Spinning: ...

● Ring Spinning Pros and Cons:

The ring spinning

system is the oldest

spinning system that

remains dominant

because of the high

quality yarns it

produces. Ring spinning

has various ...

● Winding: The cop

which is prepared in the

ring frame is not

suitable for further

processing. So the yarn

is converted into the

shape of cone which is

prepared ...

● Winding Calculation and objective: How to

do the winding

calcutaions is described

here .And also the

objective of winding is

specified....

Yarn Formation/Spinning

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Mixing and Blending

Yarn Spinning

The major methods for fabric manufacture are weaving and kni...Fabric Formation

The weaving is a process of formation of fabric with interla...Fabric Weaving

Knitting is a method by which thread or yarn may be turned i...Knitting

Embroidery is the art or handicraft of making or decorating ...Embroidery - machine embroidery

Textile Finishing is any operation (other than preparation a...Textile Finishing

Textile products used for clothing is broadly termed as Appa...Apparel/Garments

Lingerie industry has been growing prosperously and the d...Lingerie

Technical textile are textile products manufactured for non-...Technical Textiles

Fabrics

Weaving

Knitting

Embroidery

Textile Finishing

Apparel

Lingerie

Technical Textiles

make fabric/textiles of different kinds.

Yarn formation methods were originally

developed for spinning of natural fibers

including cotton, linen, wool and silk.

Since the overall physical

characteristics of the fibers and

processing factors needed differed from

fiber to fiber, separate processing

systems were developed. As synthetic

fibers were introduced, synthetic

spinning systems for texturized and

untexturized cut staple were developed

as modifications of existing staple

systems, whereas spinning systems for

texturized and untexturized filament

were developed separately.

Mixing: It is generally meant as the

intermingling of different classes of

fibers of the same grade e.g. USA Pima

grade2, CIS

Blending: IT is meant as the

intermingling of different kinds of fibers

● Types of Winding: Basically,

there are two types of

winding machines:

precision winders and

drum winders. Precision

widers, used primarily

for filament yarn, have a

tra...

● Winding Machines and Faults: Different types

of winding machines

are discussed here.

They can be classified

on the basis of ...Also

the various faults of

winding are specified....

● Optimum Spinning condition: Factors

governing Optimum

Spinning condition,

Yarn quality

assessment, Causes of

end breakage/ end

down...

● Blow Room Functions: Blow

room is the starting of

the spinning operation

where the fibre is

Yarn Formation/Spinning

http://www.textileschool.com/School/Spinning/YarnFormation.aspx (6 of 12) [6/10/2012 11:17:18 PM]

Grams per Square Metre (GSM)

The textile industry is considered as the most ecologically ...Eco Textiles

Fashion is not defined solely by clothing choices, but it is...Fashion

Interactive, table style conversion calculator to determine ...Count Conversion Calculators and Formulas

Costing is the system of computing cost of production or of ...Costing

Dispatching is the process of delivering the products to the...Dispatch

Eco Textiles

Fashion

ConversionFormulas

Costing

Dispatch

GSM is the short form of Grams per

Square Metre. GSM is the very most

important thing which defines the weight

of the fabrics of knit garments.

Garment price and quality based on

many things like GSM, fabric quality,

colours, finishing, prints, embroidery,

style, etc. But GSM is the most

important thing to be decided when

confirming the prices between the

sellers and buyers.

GSM is the weight of 1mtr x 1mtr fabric.

It means 100cm x 100cm = 10,000 sq.

cms. It can be found out by any one of

the below ways.

or different grade of same fibers e.g.

polyester & cotton, Viscose & cotton.

Objectives of missing or blending

● Economy

● Processing performance

● Functional properties

opened, cleaned,

mixed , micro dust

removed and evened

thus passed to carding

m...

● Objectives of blow room:

objectives, actions of

blow room, wastage

and faults in blow room,

types of beater in blow

room...

● Functions of Carding: Carding is

a mechanical process

that breaks up locks

and unorganised

clumps of fibre and then

aligns the individual

fibres so that they are

more or le...

● Objectives of carding: Objectives

of carding, main actions

of carding machine,

Useful sliver hanks of

different counts and

wastage in carding...

● Draw frame Functions: Carded

Slivers are fed into the

Draw-Frame and are

Yarn Formation/Spinning

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We must be aware that if we use the

smaller size bit, accurate GSM can not

be achieved. The bigger size of fabric

bit is better used to get exact or closer

GSM.

If we have fabrics, then we don’t have

any problem in finding GSM, as we can

cut any dimension to find GSM. But

most of the times, we will have only the

garments to find GSM. And we will have

to keep the garment for style, making

and other references. So we will be

allowed to cut a small bit from the

● By the weight of

100cm x 100cm

fabric bit.

● By the weight of

50cm x 50cm

fabric bit

multiplied by 4.

● By the weight of

25cm x 25cm

fabric bit

multiplied by 16.

● By the weight of

10cm x 10cm

fabric bit

multiplied by 100.

stretched/Straightened

and made in to a single

sliver. Also fibre

blending can be done at

this stag...

● Combing:

Necessity of combing,

objectives of combing,

Combers Noel...

● Roving: The input

of roving frame is silver

that comes from draw

frame section where

only parallel of comber

sliver. In roving section

reduce the linear dens...

● Lap Former Process: In Lap-

former machine, slivers

are fed to form a lap of

20 inches wide

condensed with a slight

draft and weighing as

per set length. The

machine run s...

● Speed frame:

Objectives of speed

frame, operations

involved in speed

frame...

● Open-End

Yarn Formation/Spinning

http://www.textileschool.com/School/Spinning/YarnFormation.aspx (8 of 12) [6/10/2012 11:17:18 PM]

Yarn spinning is the process of manufacturing yarn from different types of fibres into a continuous length from one or more type of fibers. Spinning is the most important and the initial step in fabric manufacturing. The major goals of spinning is to

There are various commonly used

popular Yarn Formation Systems .

Some of them are Cotton woollen or

worsted,staple,Filament yarn

« Previous Topic Yarn Spinning

Next Topic » Yarn Formation

Systems

garments. Hence nowadays, round

cutters are used. This system is used

worldwide. With the help of this round

cutter, the fabric will be cut into a small

bit.

Then the GSM of the fabric can be

found out by multiplying the weight of

this round bit by 100. This round bit is to

be weighed in an electronic scale with

milligram accuracy. As this bit is very

small and as the weight has to be

multiplied by 100, the fabric has to be

cut very sharply to get the exact GSM.

Hence the blades of this round cutter

are to be sharp and new to get the

exact GSM.

Spinning: The first

functioning of rotor

spinning ,machine was

presented at the ITMA

in 1967.Yarn spinning

according to the rotor

spinning principle

predominate...

● Substrate Formation: Textile

substrates are formed

from yarns or fibre webs

by several techniques

including weaving,

knitting, tufting, and

nonwoven formation.

Composites ...

● Air Jet Spinning:

Air jet spinning has

offered yarn

manufacturers the

opportunity to produce

yarn at relatively high

production rate. Unlike

other spinning methods

in w...

● Twist Insertion and Different Spinning Techniques: The

new spinning systems

clearly avoid the

Yarn Formation/Spinning

http://www.textileschool.com/School/Spinning/YarnFormation.aspx (9 of 12) [6/10/2012 11:17:18 PM]

produce the quality yarn from raw material, then remove the process faults followed by winding the short length bobbins on Cones. There are different types of spinning, the most commonly forms of spinning are: Ring, Rotor, Air Jet, Friction etc.

formation systems. Also some of the common types of

yarns like mercerdised ,dyed,

grindle or twisted,yarns are discussed

in this page.

limitations produced by

the twist insertion

mechanism. It is

possible to increase the

twist insertion rate ...

● Characteristics of Textile Blended yarn and fabric:

characteristics of textile

blended yarns like-

shrinks or not, water

absorbent , has creases

or not, has luster or not,

soft/hard. Each kind of

fibre ...

● Textile knit yarn production: Textile

knot yarn production,

Faults and remedies,

Uniformity ratio,

Micronnaire and

maturity, Fiber

maturity...

● Sampling of Bales of Cotton(Bulk Sample):

Sampling procedure of

bales,No.of tests and

critical difference % for

various fiber

properties...

Yarn Formation/Spinning

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