Seams Case Study

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Seams In garment sewing, a seam is the joint where two or more plies or layers of fabric, leather, or other materials are held together with rows of stitches. In apparel manufacturing, seams are classified based on their type (plain, lapped, bound, flat) and their position in the finished garment (centre back seam, inseam, side seam). Seams are finished with a array of methods to avoid ravelling of fabric raw edges and to neaten the inside of garments. The seam type and sewing thread used will vary with each application (Blackwood and Chamberlain 1970; Chuter 1995). 6.1.1 Classification of seam Seams are classified based on the type/number of fabric components used. Eight classes of seams are defined by ISO 4916:1991. In the past, seams were classified as Flat, Superimposed, Lapped or Bound seam and stitching were described as edge finishing or ornamental. The ranges of seams are given below together with their descriptions under the above and the new system of seam classification (Chuter 1995; Coats 2003; Shaeffer 2000). Class 1 – Superimposed seam Class 2 – Lapped seam Class 3 – Bound seams Class 4 – Flat seams Class 5 – Decorative/Ornamental stitching…show more content…
“In Flat seam otherwise known as Butt seams, two fabric edges in flat or folded condition are brought together and over sewn with stitches as shown in Figure 6.4”. The main objective of this seam is to provide a joint without any extra thickness of fabric at the seam, as needed in underwear or foundation garments. The bottom threads (looper thread) should be soft, yet strong and the cover thread may be strong as well as decorative. The flat seam is normally sewn with a zigzag lock stitch, chain stitch or covering stitch. This kind of seam will comprises of two components and could be seen on knitted garments where seams are required to be free from bulk (Chuter 1995; Coats 2003; Shaeffer

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