Sleeveless Little Girl Summer Dresses Shirring At Yoke Contrast Binding Dress

Factors of Seam Abrasion ResistanceSeam Abrasion Resistance:

It is easy to determine the resistance to abrasion of a sewing thread but the abrasion resistance of that

sewing thread does not behave similarly when stitches into a seam. The reasons behind it is that some

factors e.g. stitch type, seam type, sewing conditions, fabric types, thread types etc. alters the sewing

thread abrasion behavior.To determine the seam abrasion resistance, a seam abrasion machine (SAM)

has been developed by J & PCOAT’s research laboratory. In this machine a multi-directional abrasion

action operates along the edge of the seam. The test result is expressed as number of rubs to first

stitch failure. This article has shown some key factors which are directly affected on seam abrasion

resistance.Factors Affecting on Seam Abrasion Resistance:Abrasion resistance of a seam varies

depending on some factors which are pointed out in the below:

1. Type of threads,

2. Stitch balance,

3. Seam tightness,

4. Fabric type.

5. All the above four factors have explained in the following:

6. 1. Type of threads:

7. It has been clearly established that synthetic threads are far superior to the natural threads in terms of

abrasion resistance but it is not clear whether these results would also apply in case of seams.

8. 2. Stitch balance:

9. Normally in a two thread chain stitch seam (type-401), the ratio of the needle thread to looper threads is

1:1.7. If this ratio is reduced by increasing the length of feed of the needle then the abrasion resistance of

the chain side is improved. But if the needle thread length increases more than the looper thread then the

abrasion resistance performance falls rapidly.10. 3. Seam tightness:11. In the case of tight seams,

resistance to abrasion is higher than the loose seams. The fabrics which are pucker prone are frequently

stitched under very light tensions although sometimes seam grim is unavoidable. Higher the seam grim

the less will be the seam abrasion resistance.12. 4. Fabric type:13. Type of fabric is also important in this

regard. Because, a coated or densely woven fabric will not permit the sewing thread to bed down and thus

increases the susceptibility to the surface abrasion.14. Hence, for garments likely to be exposed to abrasive

elements during wear it is important to checkstitchbalance, seam and stitch type, fabric type, sewing thread

type, seam tightness, seam grim aspect etc.To obtain a satisfactory seam abrasion resistance before going

to full scale garments production.

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