Rules for determining warp and weft yarn

Rules for determining warp and weft yarn:

Rules for determining warp and weft yarn:

Fabric warp and weft yarn are determined by considering the following various factors

1. If the sample fabric has a selvage, the yarns along the selvage are warp yarns.

2. Between warp and weft yarn, warp yarn has more twist.

3. The cream of warp yarn is less than weft yarns.

4. A Z twist is given to the warp yarn. So Z twisted yarn is weft yarn.

5. Generally the yarn count per inch is higher on the warp side. Therefore, the direction with the highest number per inch in the fabric is the direction of the warp.

6. The tensile strength of the warp yarn is high. So the side of yarn with relatively higher strength is the side of warp yarn.

7. Thinner yarns are used on the comparatively warp side.

8. Usually starch is added to the warp yarn before spinning. So, the direction of the starched yarn is the warp yarn.

9. Hairiness is more in warp yarn.

10. If the fabric has ply yarn on one side and single yarn on the other side, the ply yarn side is the warp yarn.

11. In the case of striped fabrics, the direction of the stripe is generally considered to be the direction of warp direction.

12. In the case of terry towels and carpets, the pile direction is considered as the warp direction.

13. Check fabrics that have an even number of threads on the weft side. But the warp side can be either even or odd.

14. If the fabric has a combination of different counts, yarns of different counts are used in the warp direction.

15. In the case of union cloth, cotton yarn is used on one side, and yarn of another count on the other side. The direction of the cotton yarn is the warp yarn.

16. Check fabrics usually use yarns with more colors on the warp side.

17. Reed Mark tends to warp.

In addition to the above, the experienced can easily select the direction of the warp and weft yarn by their experiential knowledge.

Methods of determining the number of warp and weft per inch:

After identifying the direction of warp and weft, the fabric is placed evenly on the table and the counting glass is placed on it. The number of warp and weft threads per inch is determined by multiplying the warp and weft threads one by one with the help of a needle. https://bdfabric.com/fabric-analysis-purposes-necessity-and-factors/

Counting glasses:

Counting glass is three square parts, which can be folded. One side of the square has a magnifying glass, which makes it easy to see each thread big and clear, and the opposite side has a 1″x1″ mark, which makes it easy to count the number of warp and weft threads in 1″ with a needle. Counting glass is very easy to identify warp and weft yarn per inch.