AQL inspection

Garment construction usually involves the use of several different types of sewing machines, and garment inspectors carefully inspect machine stitching. Some of those machines are over lock machines, straight stitch machines, and bar tack machines. Over lock machines, also referred to as sergers, usually use more than one needle to produce a seam that does not have a raw edge. These machines are used to produce stronger seams that will not ravel after laundering and wear. Bar tack machines are usually used to provide reinforcement to areas of extreme stress and in the attachment of belt loops.