In present time, knit yarn occupied a big market, so every spinning mill has some tendency to produce knit yarn. So, to produce knit yarn, the following arrangements are necessary:

Continuous electric supply source I.e. generator needed
Working environment be comfortable I.e. humidity of plants is needed
Quality control department should be well equipped.
Schedule of machine maintenance must be maintained properly & carefully.
Overall cleaning efficiency must be in adequate position.
Relative humidity in different section given below:

Blow room 50-55%

Carding 50-55%

Drawframe, combing, flyframe or simples frame 50 -55%

Ring frame 50-60%

Finishing 60-65%

Major Yarn Faults and Remedies

Yarn faults	Remedies
Thick & thin places	Clean the sliver and yarn delivery passage
Slab	Undrafted sliver, to increase back zone draft, clean all covers of delivery passage.
Hairiness	To follow up ring traveler change schedule
Naps	Proper cleaning of Card frame
Color Contamination	During mixing, supervision must be strict. To set a contamination meter in conveyor lattice or finishing m/cs

Uniformity Ratio

Uniformity Ratio is defined as the ratio of 50% of span length to 2.5 % span length expressed as percentage. This ratio is a measure of the length variability of the cotton. The ratings for uniformity ratio are as follows:

50% ---> Good
45% ---> Average
43% ---> Poor

Micronnaire and Maturity

The ratings of the micronnaire and maturity values given below can be used as guide line

Micronnaire	Value	Maturity	Co-efficient
3.0	Fine	0.80	Good
4.0	Average	0.75	Average
5.0	Coarse	0.65	Poor

Fiber Strength

The tenacity of the cotton obtained at 3mm guage length can be rated on the following basis:

Rating	Presley/1000 lb. sq. in)	Steloeter/(g/tex)
High	75	30
Average	60	24
Low	45	18

« Previous Topic Characteristics of Textile Blended yarn and fabric	Next Topic » Sampling of Bales of Cotton(Bulk Sample)

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 has its own characteristics, when mixing them, one should consider their characteristics to create a hybrid with the characteristics needed.	Sampling procedure of bales,No.of tests and critical difference % for various fiber properties

Categories

Textile knit yarn production

Knit Yarn Production System

Major Yarn Faults and Remedies

Uniformity Ratio

Micronnaire and Maturity

Fiber Strength

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