Overlock stitch

from Wikipedia, the free encyclopedia
4-thread overlock seam

An overlock stitch , overedge or overlock is a type of seam the two pieces of fabric with more than two threads stitched and seam various functions such as the mechanical connection on the one hand and the serging meets the other hand, at the same time. The special thing about the overlock stitch is that it can be produced with an overlock sewing machine in a single operation.

The term overlock comes from English. To lock means to lock . In the typical sewing machine seam, the bobbin thread locks the upper thread so that it cannot come loose from the seam. The over in overlock refers to sewing over an edge.

Typical types of seams

Typical types of overlock seams are:

seam description
3-thread seam Is used to overcast many materials, but also to sew together little stressed closing seams. For example, for the side seams on blouses, shirts or polo shirts.
The 4-thread seam with integrated safety seam

(also known as 4-thread overlock, bonded or imitation safety seam)

For sewing together and overcasting all materials, particularly elastic or coarse fabrics.

(The safety seam is created automatically by the right needle thread.)

Rolled hem

(3-, more rarely also 2-ply)

For overcasting light and fine fabrics. Application: e.g. B. for the lower end of wedding dresses or for silk scarves
Flatlock seam

(2 or 3 threads)

It is sewn on a fold or as a connecting seam.

The seam is created by changing the thread tension, usually in conjunction with decorative threads.

2-thread seam Is used for overcasting light fabrics (hardly used anymore because the 3- and 4-thread seams hold better).
Safety seam This seam is made from two separate seams: a two-thread double chainstitch seam (the safety seam) for durability and a two- or three-thread edging seam

(The four-thread overlock seam offers hold of the edge through wider, connected seams and is therefore increasingly popular).

Double chain stitch

(2 threads)

From above the seam looks like the straight stitch seam of a household sewing machine, from below it looks like a chain. Application: For sewing solid materials, e.g. B. Upholstery fabrics or denim fabrics. The stitch is also used as a decorative seam.

Individual evidence

  1. ↑ Andrea Müller: Stitches on stitches - the different overlock stitches. In: blog.bernina.com. February 28, 2013, accessed March 27, 2017 .