A seam is the line along which two pieces of fabric are held together using stitches. In the past, sewing seams was done by hand and completing an entire piece of garment can take a while. The invention of the sewing machine made the concept of mass produced clothing pieces possible. Fabrics can be sewn together more quickly and with precision, with the stitches equal in length and quality. Today, many clothing manufacturers use computerized sewing machines to produce large volumes of ready to wear clothing, household textiles and the like.
There are many kinds of seams used in garment manufacturing. Here are a few of the most common ones used in detail.
PLAIN SEAM
The most common type of seam, the plain seam joins two fabrics at the seam using a single line of stitching. This seam is also referred to as the butterfly stitch because the seam allowances are usually pressed open on either side to form a butterfly. This type of seam is one of the easiest to make. All you need to do is make a straight back stitches along the length of the seam. After that, press the seam open using a hot iron.