Stitches lapped seam

Figure 7.7 Tensile test for a stitched lap seam on woven geotextile. Courtesy SKZ.

Double-lapped seams consist of two or more plies of fabric that are lapped together and secured with one or more rows of stitching. One of the most common seams is the double-lap felled seam with two or more rows of stitching. This provides a strong seam with fabric edge protection. This seam is often used on the side seam of judo... 

Seam types used for woven fabrics include superimposed seams and double-lapped seams, especially when a high degree of strength is required, for example, in judo suits. Hemmed seams are also used on legs, and a lockstitch is used on areas that include labels and pockets. Sewing threads would be mainly staple core-spun polyester. Round-point needles are used for stitching these materials. 

This class of seam requires that the phes of material are lapped and seamed with one or more rows of stitches. A lapped seam is a seam formed by lapping two pieces of material commonly used in joining garment parts such as yoke, gusset and other garment parts (Figure 10.29). 

The most common lapped seams are LSb and LSc overlap seams of two plies at the edges using Class 100, Class 300 or Class 400 stitches. LSb is used for attaching curtains and to attach the waistband of men s dress slacks and LSc for side-seams of dresses, shirts and jeans. Long seams on garments such as jeans and shirts... 

Double lock stitch 2. Lap lock stitch seams... 

Double-lapped felling seam system as double or triple seam 7. Multiple lock stitch seams for special tasks... 

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