Stitch Type

Stitches: Class-400 (Multi-Thread Chainstitch)

Class-400 (multi-thread chainstitch): This stitch is formed with two or more groups of threads loops of one group of threads are passed through the material and are secured by inter-lacing and inter-looping with loops of another group. One group is referred to as the needle thread and the other as the looper thread. It has an appearance of a lockstitch on top but has a double chain effect formed by a looper thread on the underside.

 Widely used in the apparel industry  Also called double locked chainstitches  Appears as lockstitch on top and a chainstitch on bottom

Uses:

Setting elastic waist bands Decorative stitching on belts

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Advantages: •

More extensible stitches than lockstitches • Less costly to produce; don't require bobbins

Disadvantages: •

Create a looser seam than lockstitches

• Require more thread; creates a bulkier seam • Thread abrades away more easily than lockstitch; less durability • Thread loops may catch on jewelry

406-407 Bottom Covering Chainstitches: •

2 or 3 parallel rows of stitching

Used:

• Attach elastics and bindings to underwear • Hem T-Shirts • Flatten seam allowance of seams after they are sewn