denim stitch
DESCRIPTION
the report omn different seams used for denim fabricsTRANSCRIPT
““EFFECT OF STICH DENSITY ON EFFECT OF STICH DENSITY ON SEAM PERFORMANCE OF DENIM SEAM PERFORMANCE OF DENIM MEN’S WARE SUITING FABRIC”MEN’S WARE SUITING FABRIC”
PROJECT DEVELOPERSPROJECT DEVELOPERS
• SUHEF MOMIN : 06DTMX38• AMIT MAGDUM : 06DTMX32• VINAYAK KAMBLE : 06DTMX26• RAMDAS KAMATE : 06DTMX25• AMIR MUJAWAR : 06DTMX40
PROJECT GUIDE: Ms. PAVITRA SHYAM
GROUP MEMBERS:
PROJECT GOALPROJECT GOAL
Ultimate goal of project is to achieve optimum stitch density for the selected following types of seams by varying the three different stitch density
LITERATURE REVIEWLITERATURE REVIEWLITERATURE REVIEWLITERATURE REVIEW
• Man made textile in India (Jan 09)-Dr.Nemailal Tarafder, Rajib Karmarkar& Mithun Mondal.
• Stitches & Seams -Laing. R.M.
• A.S.T.M. Standerds-Dorkin & Chamberlain.
Sample Size: 300mm x 50mm
EXPERIMENTAL PROCEDUREEXPERIMENTAL PROCEDUREEXPERIMENTAL PROCEDUREEXPERIMENTAL PROCEDUREPURCHASE THE FABRIC
PHYSICAL TESTING OF FABRIC
SELECTING SEAMS & STITCH TYPE
PREPARE THE SAMPLES BY VARYING THE DIFFERENT STITCH DENSITY FOR DIFF. SEAMS
PERFORMING TESTING OF PREPARED SAMPLES
TAKING THE RESULT FROM TESTING
SELECTING THE OPTIMUM STITCH DENSITY FOR THE SEAM
FABRIC PARTICULARSFABRIC PARTICULARSFABRIC PARTICULARSFABRIC PARTICULARS
PERTICULARS LYCRA DENIM NORMAL DENIMEPI 75 95PPI 50 48WARP Ne 8 10WEFT Ne 15 20GSM 360 320
PHYSICAL TESTING OF FABRICPHYSICAL TESTING OF FABRICPHYSICAL TESTING OF FABRICPHYSICAL TESTING OF FABRIC
PHYSICAL TESTSLYCRA NORMAL
WARP WEFT WARP WEFT
CRIMP (%) 20 28 13 19BENDING LENGTH ( cm) 2.7 3.7 3.1 3.3CREASE RECOVERY (o) 65 130 46 99FABRIC STRENGTH (kgf) 127.89 73.45 87.45 42.33FABRIC EXTENSION (mm)
70.28 106.44 39.61 46.00
• CRIMP (%) : Crimp Tester• BENDING LENGTH ( cm) : Stiffness Tester• CREASE RECOVERY : Crease Recovery Tester• WARP/WEFT COUNT (Ne) : Weight Balance• FABRIC & SEAM STRENGTH (kgf) : Instron (6556)
INSTRUMENT USED FOR TESTINGINSTRUMENT USED FOR TESTINGINSTRUMENT USED FOR TESTINGINSTRUMENT USED FOR TESTING
In sewing, a seam is the line where two or more layers of fabric are held together by stitching. there are various types of seams for e.g..
1) Superimposed Seam (SS)
2) Lapped Seam (LS)
3) Flat Seam (FS)
4) Bound Seams (BS)
SEAM:SEAM:SEAM:SEAM:
SELECTION OF SEAMSELECTION OF SEAM
• 1) Superimposed Seam (SS):1.1) SSa.
• 2) Lapped Seam (LS) 2.1) LSb.
2.2) LSc.
For This Project We Had Selected First Two Seams As These Seams Are Mostly Used In Denim
SUPERIMPOSED SEAM (SS)SUPERIMPOSED SEAM (SS)SUPERIMPOSED SEAM (SS)SUPERIMPOSED SEAM (SS)
• The superimposed seam is achieved by two or more separate pieces of together. This is the one of the most recognized methods of seaming. The most basic superimposed seam is the SSa. One ply of fabric stacked upon another with thread stitching through all plies of fabric. SSa is used for in-seam in garment.
SSa
LAPPED SEAM (LS)LAPPED SEAM (LS)LAPPED SEAM (LS)LAPPED SEAM (LS)
• This class of seaming has the largest number of variations. A lapped seam is achieved with two or more pieces of fabric overlapping each other. LS commonly, but not always, have one ply of fabric fold under itself for a finished edge.
USE OF LAPPED SEAMUSE OF LAPPED SEAMUSE OF LAPPED SEAMUSE OF LAPPED SEAM• Lapped seams are common when
working with leather and sewing over lay yokes seams on jeans.
LSb
LSc
LSb: Attaching overlay Yoke’s & patch pockets
LSc: In-seam in Jeans
In sewing, the configuration of the interlacing of sewing thread in a specific repeated unit.
STITCHSTITCHSTITCHSTITCH
• Lock Stitch• Over Edge stitch• Chain stitch
LOCK STITCHLOCK STITCHLOCK STITCHLOCK STITCH• The lockstitch uses two threads, an upper
and a lower. The upper thread runs from a spool kept on a spindle on top of or next to the machine, through a tension mechanism, a take-up arm, and finally through the hole in the needle. We are uses 3 different stitch density
STITCH DENSITY: 1) 2.5
2) 3.0
3) 3.5
SEAM TESTINGSEAM TESTING
SUPER IMPOSED SEAM
Seam Allowance both edge: 1cm
Grip : 5 cmGrip : 5 cm
Distance between 2 jaws : 20 cm
SEAM TESTINGSEAM TESTING
LAPPED SEAM
Seam Allowance both edge: 2cm
Grip : 5 cmGrip : 5 cm
Distance between 2 jaws : 20 cm
RESULTS OF SEAM TESTINGRESULTS OF SEAM TESTINGNORMAL DENIM :
WARP WAY WEFT WAYSeam Type
Stitch Density
Load (kgf)Extension
(mm)Load (kgf)
Extension (mm)
SSa2.5 52.59 37.87 35.07 35.3
3.0 53.58 37.28 45.78 41.82
3.5 55.9 37.36 46.71 42.91
LSb2.5 48.1 36.69 55.43 50.52
3.0 50.85 36.34 47.77 43.17
3.5 50.43 36.72 45.36 44.66
LSc2.5 63.4 36.0 71.38 55.41
3.0 65.69 36.04 59.63 49.91
3.5 70.29 36.99 70.42 51.96
RESULTS OF SEAM TESTINGRESULTS OF SEAM TESTINGLYCRA DENIM :WARP WAY WEFT WAY
Seam Type
Stitch Density
Load (kgf) Extension (mm)
Load (kgf) Extension (mm)
SSa 2.5 67.59 70.47 46.70 83.73
3.0 67.16 74.45 48.88 84.35
3.5 67.17 71.23 46.28 88.08
LSb 2.5 58.32 68.13 53.83 86.71
3.0 60.68 69.92 42.64 87.14
3.5 64.99 70.38 47.90 86.76
LSc 2.5 91.59 68.58 67.77 95.47
3.0 88.69 70.11 72.56 97.33
3.5 95.61 73.29 68.25 94.07
CONCLUSIONCONCLUSION
• FOR LYCRA-DENIM FABRIC.
1.SSA (warp):- 2.5
2.SSA (weft) :- 3.0
3.LSB (warp) :- 3.5
4.LSB (weft) :- 2.5
5.LSC (warp) :- 3.5
6.LSC (weft) :- 3.0
FOR NORMAL DENIM FABRIC
1. SSA (warp):-3.5
2. SSA (weft) :-3.5
3. LSB (warp) :-3.0
4. LSB (weft) :-3.0
5. LSC (warp) :- 3.5
6. LSC (weft) :-2.5
CONCLUSIONCONCLUSION
REFERENCEREFERENCE
• 1) Morris, P. A. and Brain, D. H., Seam Slippage, Clothing Res. J. 3, 135-144 (1975)
• 2) Shimazaki, K. and Lloyd, D. W., Opening Behavior of Lockstitch Seams in Woven Fabrics Under Cyclic Loading Conditions, Textile Res. J. 60, 654-662 (1990)
• 3) Annual Book of ASTM Standards, ASTM D 6193-97: Standard Practice for Stitches and Seams, pp. 909-1049; ASTM D 1682-64: Breaking Load and Elongation of Textile Fabrics, pp. 347-354; ASTM D 1683-81: Failure in Sewn Seams of Woven Fabrics, pp. 355-361; American Society for Textile and Materials, Easton, PA, 1985
• 4) International Journal of Clothing Science and Technology, Volume 17, Numbers 3-4, March 2005, pp. 225-231
• 5) www.fibre2fashion.com• 6) www.thedenimloft.com• 7) www.fashion-era.com • 8) www.amefird.com
THANK YOUTHANK YOU
• Thank you one and all for your kind support and attention for our
presentations.
• We thank you for your valuable time.
• We also thank our professors for their valuable guidance throughout