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High Volume Instrument (HVI) and Advance Fibre Information System (AFIS)

This document discusses two cotton testing systems: [1] The High Volume Instrument (HVI) system, which measures physical characteristics of cotton such as micronaire, strength, elongation and color. HVI testing provides quality control and research benefits. [2] The Advance Fibre Information System (AFIS) tests individual fibers and provides data on neps, length, short fiber index and trash. AFIS is used for process optimization and reducing spinning costs. Both systems provide fast, operator-independent fiber testing to improve cotton quality and spinning efficiency.

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Rekha Devi
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911 views10 pages

High Volume Instrument (HVI) and Advance Fibre Information System (AFIS)

This document discusses two cotton testing systems: [1] The High Volume Instrument (HVI) system, which measures physical characteristics of cotton such as micronaire, strength, elongation and color. HVI testing provides quality control and research benefits. [2] The Advance Fibre Information System (AFIS) tests individual fibers and provides data on neps, length, short fiber index and trash. AFIS is used for process optimization and reducing spinning costs. Both systems provide fast, operator-independent fiber testing to improve cotton quality and spinning efficiency.

Uploaded by

Rekha Devi
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PPTX, PDF, TXT or read online on Scribd
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High Volume Instrument (HVI)

And
Advance Fibre Information System (AFIS)

Under the supervision of PANKAJ KASARA


Msr. Meenu Manjul 18EMBTT059
(professor) 7TH SEM . A3
HIGH VOLUME INSTUMENT
• The HVI system measures various physical characteristics of cotton. HVI
system are based on the fibre bundle testing and their average values
determined

1. Micronaire
2. Fibre strength in g/tex
3. Elongation
4. Moisture content
5. Color
6. Uniformtiy index
7. Trash
8. Maturity
9. Short fiber index
10. Spinning consistency index (SCI)

SCI= - 414.67 +2.9 strength -


9.32micronaire + 49.17 UHML
+4.74UI +0.65RD +0.36B
HVI Application
• Quality control of all the bales processed in a spinning
• Verify published data on cotton classification and assessment of yarn
quality
• Basic research and investigation of various physical properties of
Textile fibres
• Verify progress in attaining goals in development of new varieties of
cotton.
• Grading and classification for spot market price of cotton
Advantage of HVI Testing

1. The results are independent of the operator


2. The results are based on large volume sample and are therefore more
significant
3. The fibre data are immediately available
4. The data are clearly arranged
5. The testing of sample is complete in 0.3 minute its very fast testing the
sample.
Advance Fibre Information System
• AFIS provideo basic single fibre information. This is based on
aeromechanical fibre processing similar to opening and carding,
followed by electro-optical sensing and then by high speed
microprocessor-based computing and data reporting.
1. Neps
2. Neps count
3. Neps size
4. Neps removal efficiency (NRE)
5. Length (mm)
6. Length cv%
7. Short fibre index (SFI)
8. Fibre number
9. Tresh
10.Tresh size
AFIS sencer working
USE OF AFIS

1. Used for singal fibre testing.


2. Process optimization.
3. Speed, gauges settings.
4. Find NRE , fibre rupture in machine at avery stage in spinning.
5. Know machine performance
6. AFIS data can be used to develop a new control chart.
7. Main use to reduce the overall cost of spinning processes.
Merit of AFIS

1. It minimise the % of fibre waste and yarn imperfection.


2. AFIS controls fibre damage and effectively reduces the short fibre content in carding.
3. In drawing process the slivers are drafted without fibre damage and the long term variations are
reduced.
4. Combing settings optimissed to achieve the best efficiency with the lowest amount of waste
THANK YOU

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