Lecture 19 Sewing Room

Definitions….  Seam: –The line where two or more plies of a textile material are attached

Stitch Designation… 301 – BSa - 2

Seam Types…  There are six basic types of seams according to ASTM standards. –SS Super-impose(55) –LSLapped Seam(10) –BSBound Seam(18) –FSFlat Seam(6) –OSOrnamental Seams(8) –EFEdge Finishing(32)

SS (Super-Impose)  Some common uses are –Side seam of skirt and shirts –Inseam of jeans –Collars and cuffs –Double waistband

LS (Lapped Seam)  Some common uses are –Side seam of shirts –Out-seam of jeans –Attaching yokes

BS (Bound Seam)  Some common uses are –T-shirt necklines –T-shirt Sleeves

FS (Flat Seam)  Some common uses are –Sweat shirts –Under wear

EF (Edge Finishing)  Some common uses are –Single fold hem –Double fold hem –Trouser hem –Shirt hem

OS (Ornamental Stitches)  Some common uses are –Decorative stitching on jean pocket

Sewing machine Needles…  Needle is a part of sewing machine that passes the sewing thread across the material for stitch formation.  Without needle, sewing machine is useless

Needle Types  There are two types of needles – Straight Needles – Curved Needles

Numbering system  There are two different numbering systems –Germen –Japanese

Organ (Japan) Schemtz (Germany) , 115

Needle Types…  Cut Needles –Sharp Tip  Light  Medium  Heavy  Displace needles – Ball Tip  Flat  Square  Spear