High Speed/Beam/Direct Warping | Sectional Warping | Differences Between Sectional and High Speed Warping

Wednesday, May 16, 2012

8:44 AM

High Speed/Beam/Direct Warping | Sectional Warping | Differences Between Sectional and High Speed Warping

Flow Chart of High Speed Warping

Creel
↓
Beam for sizing
↓
Weaver’s Beam

Features of High Speed Warping

It is used to make common fabrics in large quantities

It is used to produce weavers beam from single yarn

The production is high

Large amount of yarn is required to produce a weavers beam

Sizing is done

Simple flanged beam is used and drums are not required

Sectional Warping

In sectional warping equal length of yarn is first wound in small sections or sheets on a drum. Then from the drum it is transferred to the beam. By this process we directly get the weavers beam. This is a two stage method and is used for making fancy fabrics.

Flow Chart of Sectional Warping:

Creel
↓
Drum
↓
Beam (Weaver’s Beam)

Working Principle of Sectional Warping:

Sectional warping is used for short runs especially for fancy pattern fabrics.

In this case sections of the warp which may contain up to 1000 ends are first wound onto a drum tapered with a given cone angle.

So cross wound sections are combined on the drum & thus each layer of warp contains the same number of ends on the drum.

Then the warp threads altogether are transferred onto a weavers beam by unwinding the drum.

In this method the warp threads are not necessarily processed in sizing.

Features of Sectional Warping

This is suitable for making checked, stripped or other fancy fabric.

We directly obtain weaver’s beam from this process

As sizing is not done, so multi-ply yarns or yarns which do not require sizing are used

Small amount of yarn is required to produce the weaver’s beam

Sectional warping is used to produce a warp beam with a greater member if ends

The production is less in sectional warping

The yarn tension is less uniform

It is less efficient than high speed warping

Differences Between Sectional and High Speed Warping

High Speed Warping	Sectional Warping
1. Beam warping is used for long runs of grey fabrics & simple pattern.	1. Sectional warping is used for short runs especially for fancy pattern fabrics.
2. The amount of colored yarn is less than 15% of the total.	2. Greater amount of colored yarn is used.
3. High production.	3. Low production.
4. Large amount of yarn required.	4. Small amount of yarn required.
5. Single yarn is used.	5. Twisted yarn is used.
6. Less expensive.	6. More expensive.
7. It is most widely used for cotton, linen, woolen & worsted yarn.	7. It is most widely used for silk & synthetic yarn.
8. Uniform tension of yarn.	8. Less uniform tension of yarn.
9. Weavers beam is produced after sizing.	9. Weavers beam is produced after warping.
10. Creel capacity is more.	10. Creel capacity is less.
11. Beam warping is more widely used.	11. Sectional warping is not widely used.

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Wednesday, May 16, 2012