Project Title: Investigation of the yarn quality of

ring combed yarn with different noil percentages

Supervised by
Dr. Md. Zahidul Islam
Associate Professor
Department of Yarn Engineering
Bangladesh University of Textiles
Our Gratitude Towards
• Professor Dr. Hosne Ara Begum
Dean, Faculty of Textile Engineering, BUTEX

• Professor Dr. Md. Reajul Islam

Head, Department of Yarn Engineering, BUTEX

We are also very grateful to

• Md. Nazrul Islam

General Manager
Malek Spinning Mills Ltd
• Md. Dulal Hossain
Production Manager
Malek Spinning Mills Ltd
• Arup Kumar Poddar
General Manager Quality
Malek Spinning Mills Ltd
 Our Members

ABDUL KADER SAURAV ABDUR ROB RANA MOHAIMINUL HOSSAIN

ID: 2019-1-1-069 ID: 2019-1-1-074 ID: 2019-1-1-075
Outline of
presentation
• Introduction
• Objectives
• Materials and Methods
• Result and Discussion
• Possible Application
• Conclusion
 Introduction

• Ring Combed Yarn: Combines Ring Spinning and CombingProduces a stronger,

smoother, and more uniform yarn.
• Ring Spinning:Twists fibers around a spindle, creating a strong, durable yarn with
a consistent twist.
• Combing Process:Removes short fibers and impurities, resulting in longer,
aligned fibers.Enhances softness, uniformity, and smoothness of the yarn.
• Characteristics:
 Softness: Smooth texture due to removal of short fibers.
 Strength: High twist level from ring spinning increases durability.
 Uniformity: Combing ensures even fiber length and reduces imperfections.
 Fewer Impurities: Results in a cleaner and smoother yarn with minimal pilling.
 Comber Noil Percentage
Percentage of fiber discarded as waste during the
combing process, expressed as a portion of the total
fiber mass. Purpose: Removes short fibers and
impurities to improve yarn strength, uniformity, and
smoothness.
Typical Range: Usually between 10% and 25%,
depending on fiber type and desired: yarn quality
 Factors Affecting Comber Noil%
Fiber Length: Shorter fibers lead to higher comber noil%, while longer fibers
result in lower noil%.
Yarn Quality Goals: Higher noil% enhances yarn quality but increases waste;
lower noil% conserves fiber but may affect quality.
Machine Settings: Machine adjustments, like comb distance, influence the
amount of waste removed.
Impact on Production:
 Quality: Higher comber noil% improves yarn fineness and purity.
 Cost: Increases waste, which may raise production costs due to less fiber
yield.
 Efficiency: Balancing quality and fiber utilization is key for efficient
production.
Objectives:
 To assess the influence of different noil percentages on the
physical properties of ring combed yarn, such as tensile strength,
elongation, and evenness.
 To analyze the effect of varying noil percentages on the surface
appearance and texture of the yarn.
 To evaluate the impact of different noil percentages on the yarn's
production efficiency and waste generation.
 To identify the optimal noil percentage that enhances the overall
quality of ring combed yarn while maintaining production
efficiency.
 To provide recommendations for manufacturers regarding noil
percentage adjustments to improve yarn quality and reduce
waste.
 Raw Materials
Brand Name Origin Staple Length

USA Upland Cotton USA 31 mm

CIS India 29 mm

Sankar 6 India 29 mm

Ivorey Coast Raw Ivery coast 26 mm

Cotton
 Uster HVI report for Cotton Fibre
Paramete SCI MST Mic Mat Len Ui% Str Elong Tr. Cnt
r (mm) (g/tex) %

Value 144 9.4 4.75 0.89 29.04 83.4 32.7 4.0 55

Uster AFIS report for cotton fibre

Parameter Neps cnt/gm SCN cnt/gm IFC %

Value 83 07 6.3
 Comber Machine
Machine descriptions of
Comber
➢ Manufacturer: LAKSHMI
➢ Country of origin: India
➢ Model: LK69
➢ No of m/c: 18
➢ Delivery speed: 350-450 nips/min
➢ M/C efficiency: 80-90%
➢ Drafting system: 3 over 3
➢ Can size: (25 mm*600 mm*1200 mm)
➢ Feed/nip: 4.7 mm
➢ Noil%: 8-25%
➢ Auto stop motion: Yes
➢ Auto doffing: Yes
➢ Lap dia: 550 mm (minimum)
➢ Lap length: 230 mm
➢ Lap weight: 80 gm /m
➢ Spool dia: 200 mm
• Manufacturer: LAKSHMI
• Model: LR6/A
• Origin: India
• Manufacturing Year: 2008
• No. of Machine: 33
• TPI: 24.92
• TM: 3.2-4.3
• No. of Spindle: 516
• Delivery Speed: 18.9 m/min
• Spindle Speed: 14000-18000 rpm
:

Fig: USTER HVI

USTER Evenness Tester

➢Manufacturer: Uster Technologies

➢ Origin: Switzerland
➢ Model No: USTER TESTER 5

Function: Measurers following qualities

of

✓ Unevenness of mass
yarn, roving and sliver

✓ Coefficient of variation of mass

✓ Hairiness, imperfection index
✓ Thick and thin places, Nep
Fig: USTER AFIS PRO
 Methodology
Comber Noil Finisher Draw
Comber Simplex
Variation Frame

Uster HVI, Uster Auto Coner

Uster AFIS Evenness Ring Frame
PRO Tester
 Result And Discussion
Elongation at Break
In Figure 4.1 it is seen that, elongation at break increases as comber noil% increase.
Because, fibres will be more parallel in structure that enables the fibre separate
from each other easily.
Imperfection Index
Imperfection index is the summation of (-50% / km) thin place, (+50% / km) thick place and
(+200% / km) neps.
As yarn linear density increases, IPI value also increases. With the increase of comber noil
%, IPI value decreases as stated in the Figure 4.2.
This is because, amount of short fiber removal increases with the increase of comber noil%.
Unevenness %
Unevenness % measures the unevenness or uniformity of yarn or fibre. It is done by uster
evenness tester. In the Figure 4.3, it is observed that U% is decreased when comber noil%
is increased from 16% to 20%.
Hairiness
Hairiness is one of the most important properties of yarn which effect the outlook of yarn.
To decrease hairiness, short fibres should be removed at a moderate rate. In the Figure
4.4, it is seen that hairiness value decreases with the increase of comber noil%. Because,
higher combers noil% removes shorter fibres.
Coefficient of Variation of Mass (CVm%)
Coefficient of variation of mass percentage measures the consistency in thickness and
quality of yarn.
CVm% varies with the variation of comber noil%. In the figure it is seen that CVm%
decreases with the increase of comber noil%
 Possible Application
High-Quality Apparel:
 Luxury T-Shirts and Tops: Offers a soft hand feel and a smooth surface, making it ideal for premium clothing.
 Dress Shirts: Provides a refined look with minimal pilling and excellent durability, perfect for formalwear.
 Underwear and Loungewear: Softness and comfort are enhanced, which is desirable for garments worn close to the
skin.
 Home Textiles: Bedding (Sheets and Pillowcases): The smoothness and durability make it ideal for high-thread-count
sheets and pillowcases, which offer comfort and a luxurious feel.
 Towels: High-quality towels benefit from the strength and softness, especially for bath towels and face cloths.
Luxury Knitted Fabrics:
 Sweaters and Cardigans: High comber noil% yarn provides a smooth and high-quality finish, desirable for knitwear
with a premium feel.
 Scarves and Shawls: Offers warmth with a soft, fine texture, ideal for accessories that are worn directly on the skin.
Premium Denim:
 Jeans and Jackets: High comber noil% yarn creates a smooth, strong fabric that resists pilling and fading, which is
excellent for premium denim products.
CONCLUSION

This research shows that the variation of comber noil % of ring spun yarn fluctuates the values of its
quality parameters. Investigation of different data of different testing machines, this research measures
the yarn properties values. It can be concluded that comber noil % increment not only
improves yarn quality but also increases the durability and acceptance by improving yarn strength and
lustrous properties. As comber machine removes most of the short fibres from yarn producing fibres,
increasing comber noil % is one of the most effective ways to improve yarn properties. Based on these
conclusions practitioners should consider this way of improving ring spun yarn properties to get a
significant result. So, this research is an ultimate tool of improving yarn properties which can
contribute to the textile sector's improvement significantly