An overlock sewing machine, also known as a serger, is a specialized type of sewing equipment widely used in the textile and garment - making industries.
Unlike regular sewing machines that mainly create stitches to join two or more layers of fabric together, an overlock sewing machine serves multiple functions simultaneously. It trims the fabric edge as it sews, which helps prevent fraying. This is particularly useful when working with fabrics that are prone to unraveling, such as knits or loosely woven materials.
In addition to trimming, it also encases the raw fabric edge with thread, creating a neat and professional - looking finish. This encasing process not only enhances the durability of the seam but also gives the garment a polished appearance.
Overlock sewing machines can produce different types of stitches, including two - thread, three - thread, and four - thread stitches. Each type has its own specific application. For example, a two - thread stitch is often used for lightweight fabrics and for finishing edges, while a four - thread stitch provides a stronger and more durable seam, suitable for heavy - duty garments.
With its high - speed operation and ability to handle a variety of fabrics, the overlock sewing machine has become an indispensable tool in modern garment production, helping to streamline the manufacturing process and improve the overall quality of finished products.