Page 67 - Shawl Weaving Artisan - TP

Textile & Handloom Exercise 1.4.38

Shawl Weaving Artisan - Defects and Yarn Quality

Sectional warping calculations

Objectives : At the end of this exercise you shall be able to
• calculate the creel capacity, number of sections, number of patterns per section, width of warp, and total
number of ends during sectional warping.

Requirements

Tools/Equipment’s/Instruments Materials
• Warping drum or sectional • Bobbins - 1 No.
warping machine - 1 No. • Notebook - 1 No.
• Creel - 1 No. • Pen - 1 No.
• Cones - 1 No.

PROCEDURE
Given example for calculation Table 1

Table 1
S. No. Parameter Value
1 Total ends required 2400 ends
2 Section width (on warp beam.) 1 inch
3 Creel capacity 100 cones/bobbins per creel
4 Warp beam flange width 50 inches
5 Ends Per inch (EPI) 60

Step-by-Step calculations = 60 ends per section
1 Width of Warp (On Reed / Beam) Ends per section = 60.
Total Ends 4 Number of Patterns per Section (Cone Creel
Width of Warp
EPI Loading)
2400 Given Creel capacity = 100 cones
Width of Warp
60 So total possible number of ends that can run
simultaneously = 100 ends
= 40 inches
We need 60 ends per section, which is less than 100, so
Warp width = 40 inches creel capacity is sufficient.
2 Number of sections If ends per section were more than 100, we would have
Sectional warping uses 1 inch section width, so: to wind in multiple patterns (multiple creel loads).
Warp Width In this case:
Number of Sections
Section Width Ends per Section
Number of Patterns per Section =
40 Creel Capacity
Number of Sections 60
1 Number of Patterns per Section =

= 40 sections 40
= 0.6 ≈1 approx.
Number of Sections = 40
Only 1 pattern per section needed.
3 Ends per Section 5 Creel capacity check
Total Ends
Ends per Section Since ends per section (60) < Creel capacity (100), only
Number of Sections single creel loading needed per section.

2400
Ends per Section 6 Summary of calculations (Table 2)
40
55