This is actually for Educational purpose only. I made this Slide for Noman group and Zaber and Zubair Fabrics Ltd. for presentation purpose. I share this for help others who actually need this kind of information and Slide.
2. Presentation on:
Sectional and Direct Warping
Presented By:
MD. SOHAN MIA
NITER
Dept. of
Fabric Manufacturing Engineering
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3. Warping:
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Warping is defined as the parallel winding of yarn from cone or cheese
packages on to a warp beam.
It is necessary to make the warp beam from good warp yarn
Proper warping increase the quality of the yarn
4. Importance of Warping:
Warping accelerates the next sizing process.
Various yarn faults are modified
Small packages are combined in this process.
Parallel warp beam are constructed by warping.
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5. Types of Warping:
Mainly three types of warping are available:
i. Direct Warping or Direct Beaming
ii. Sectional Warping
iii. Ball Warping
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6. Direct Warping:
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Also known as high speed warping.
Direct warping is suitable for gray or mono-colored warp that require
sizing.
Here, weavers beam is produced after completing sizing process.
Here, creel capacity is greater than 12000.
7. Direct Warping Machine:
Warping m/c contains
Creel
Headstock
Control Devices
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Picture: Direct Warping
8. Sectional Warping:
Used for small volume and customized production (Stripes and specialized
yarns)
Two stages are involved here
It provides lower amount of production than high speed warping.
It is used to produce fancy fabric.
Here, creel capacity ranges 300 to 400.
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9. Sectional Warping Machine:
Sectional warping machine contains,
Warping Zone
Beaming
Control Points
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Picture: Sectional Warping
Creel (H-Creel)
Warping Drum
10. Comparison:
Direct Warping Sectional Warping
1. Used for high Volume Production 1. Used for small volume and customized production (Stripe
and Specialized yarn)
2. It is used to produce grey and colored fabric named
common fabric.
2. It is used to produce fancy fabric.
3. Here, production speed is high. 3. Lower production speed than direct warping.
4. It is a cheap process. 4. It is ultimately a costly process.
5. Single yarn is used. 5. Twist yarn is used here.
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11. Warping Defects:
Uneven Warp Beam
Mixed Count
Larger beam small amount of yarn
Remedies: Higher number of ends be used.
Crossed Ends
Faulty Knotting after yarn breakage
Loose warp
Remedies: Knotting and Tension control
Snarl formation in the warp
Over Tension
Improper Twist
Remedies: By proper tension and twist
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12. Warping Defects:
Missing Ends
Faulty stop device
Absence of yarn package on creel
Remedies: By correct stop device is used.
Hard Beam
Due to hard tension
Remedies: By correct stop device is used.
Broken Ends
To be joined carefully the yarn
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