Effect of stitch length on Lycra And Without Lycra plain Single jersey fabric dimension & properties

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Effect of stitch length on Lycra And Without Lycra plain Single jersey fabric dimension & properties

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Eect of stch length on Lycra And Without Lycra plain Single jersey fabric dimension & properes Presentaon on   Prepared By : Mazadul Hasan sheshir ID: 2010000400008 13 th Batch (session 2009-2013) Department : Wet Processing Technology Email: mazadulhasan@yahoo.com Blog : www. Texlelab.blogspot.com (visit) Southeast University Department Of Textile Engineering I/A 251,252 Tejgaon Dhaka Bangladesh Prepared By : Introducon Knitted fabrics are the preferred structures in athletic wear in which demand for comfort is a key requirement. Fabric properties are an important matter to produced athletic fabrics. In this study, an experimental work is presented to determine the effects of stitch length on plain single jersey cotton fabric with lycra and without lycra. The experimental work is going through various tests, test results, graphical representation and remarks on the test. Dimensional properties, pilling resistance, spirality, fabric thickness, and some color fastness test are analyzed to get information about the effect of stitch length on plain single jersey fabric. From the analyses of variance, it is seen that the effects of stitch length on the dimension and properties of the Plain single fabrics inspected are highly significant. Sample fabric producon Fabric Type : Plain Single Jersey (Lycra & without Lycra) Yarn Type : Cotton (combed) Yarn Count : 26 Ne, 70D Stitch Length : 2.76mm, 2.97mm, 3.15mm Machine Parameters Brand name of m/c : Jiunn long (Taiwan) Machine Diameter : 26 inch No of Feeder : 78 Needle Gauge : 24 No of Needle : 1968T Machine speed : 26 rpm Dierent tests & calculaon Tests on Grey Sample Fabric  Spirality Test.  Pilling Test.  GSM Calculation.  CPI, WPI & Fabric Width Calculation.  Dimensional Stability Test.  Fabric Thickness Test. Tests on Dyed Sample Fabric  Color fastness to Rubbing  Color Fastness to Wash  Color Fastness to Perspiration Spirality Spirality can be defined as a fabric condition resulting when the knitted wales and courses are angularly displaced from that ideal perpendicular angle. In other words, Spirality" arises from twist stress in the constituent’s yarns of plain fabric, causing all loops to distort and throwing the fabric wales and courses into an angular relationship other than 90 degree. Impact of fabric stch length on spirality Plain S/J Fabric without Lycra Stitch Length(mm) No. of Feeders Spirality % 2.76 78 6.15 2.97 78 8.10 3.15 78 9.5  !""""""""""""" #!#############$ %&' " ""& "" ""% ""( ""' ""! "" ""$ ""# "& !&') $&") #'") Stch Length spirality % Plain S/J Fabric with Lycra Stitch Length(mm) No. of Feeders Spirality % 2.76 78 2.15 2.97 78 3.10 3.15 78 3.50  !""""""""""""" #!#############$ %&' " ""& ""& "" "" ""% ""% ""( ""( "" ""% ""( Stch Length spirality % Piling  Pilling is a surface defect of textiles caused by wear, and is considered unsightly. It happens when washing and wearing of fabrics causes loose fibres to begin to push out from the surface of the cloth, and, over time, abrasion causes the fibres to develop into small spherical bundles, anchored to the surface of the fabric by protruding fibres that haven't broken. Fig: Pilling of Fabric [...]... Stitch Length Graph: Graphical relationships between stitch length and pilling (widthwise) Plain S/J Fabric with Lycra 4.5 Stitch Length (mm) Pilling Scale Grade (out of 5) 2.76 4 2.97 4 3.15 4 4 4 4 3.5 3 2.5 2 Table: Impact of stitch length on pilling (lengthwise) Pilling Scale Grade 1.5 1 0.5 0 Stitch Length Graph: Graphical relationships between stitch length and pilling (lengthwise) 4 Stitch Length. .. between the upper and lower side of the fabric Fig: Fabric Thickness Tester Impact of Fabric stitch length on Fabric Thickness Plain S/J Fabric without Lycra 0.6 Stitch Length (mm) Fabric Thickness (mm) 0.5 0.5 2.76 0.5 2.97 0.47 3.15 0.38 0.4 0.38 0.3 Fabric Thickness (mm) 0.2 0.1 0 2.7600000000000002 2.9699999999999998 0.47 Stitch Length 3.15 Plain S/J Fabric with Lycra Stitch Length (mm) Fabric Thickness... change in dry dimensions of fabric measured after 30-minute relaxation in water at room temperature Hygral expansion is defined as the percentage change in dimensions of relaxed fabric from wet condition to dry condition Impact of Fabric stitch length on Fabric Dimensional Stability Plain S/J Fabric without Lycra Stitch Length (mm) 0.25 Lengthwise Shrinkage Widthwise Shrinkage (%) (%) 0.2 0.2 0.18 2.76... on fabric GSM Plain S/J Fabric without Lycra & with Lycra Stitch Length GSM Stitch Length (mm) Plain S/J Fabric without 2.76 GSM 300 (mm) 152 2.97 141 3.15 127 Plain S/J Fabric with Lycra 2.76 240 2.97 234 3.15 220 250 Lycra 220 200 150 152 141 Without lycra 100 GSM 127 With Lycra 50 0 240 234 Stitch Length Courses per inch Courses per inch mean how many numbers of courses are present in one inch It... Scale Grade (out of 5) 4.5 2.76 4 2.97 4 3.15 4 4 4 4 3.5 3 2.5 2 Table: Impact of stitch length on pilling (Widthwise) Pilling Scale Grade 1.5 1 0.5 0 4 Stitch Length Graph: Graphical relationships between stitch length and pilling (Widthwise) GSM The GSM of fabric is one kind of specification of fabric which is very important for a textile engineer for understanding and production of fabric ‘GSM’ means... calculation of knitted fabric GSM Wales per inch Wales per inch means how many numbers of wales are present in one inch, it is very important for calculation of knitted fabric GSM and fabric properties Calculation of Fabric Width We calculated the fabric width by using following formula – Total no of Wales/Total no of needle Fabric Width (open width) = WPI Impact of fabric stitch length. ..Impact of fabric stitch length on pilling 5 Plain S/J Fabric without Lycra 4.5 4.5 Stitch Length( mm) Pilling Scale Grade (out of 5) 4 2.76 4/5 2.97 3 3.15 3.5 2/3 3 3 2.5 2.5 Pilling Scale Grade 2 1.5 1 0.5 0 2.7600000000000002 2.9699999999999998 Stitch Length 3.15 Stitch Length( mm) Pilling Scale Grade (out of 5) 4.5 2.76 4 4 2.97 3 3.5 3.15 3 4 3 2.5 2.5 Table: Impact of stitch length on pilling... CPI,WPI& F.W 40 53.2 37 33 CPI WPI F.W 30 20 10 0 35 56.2 Stitch Length Dimensional Stability This is a test method for measuring the changes in fabric dimension when subjected to changing humidity conditions The dimensional stability relating properties, namely relaxation shrinkage and hygral expansion, are measured Relaxation shrinkage is defined as the percentage change in dry dimensions of fabric. .. 0.5 0.57 0.4 Fabric Thickness (mm) 0.3 0.2 0.1 0 Stitch Length (mm) 0.52 Impact of Fabric stitch length on Color Fastness to Rubbing Plain S/J Fabric without Lycra 5 Stitch Length (mm) Grey Scale Grey Scale Grade( Dry) Grade( Wet) 4.5 4.5 4.5 4.5 4 2.76 2.97 4/5 4/5 3.5 3 3 2/3 2.5 3.15 4/5 2/3 3 2.5 2 Grey Scale Grade 2.5 Dry Wet 1.5 1 0.5 0 Stitch Length Plain S/J Fabric with Lycra Stitch Length (mm)... Stitch Length Dry Wet Impact of Fabric stitch length on Color the Fastness to Wash Plain S/J Fabric without Lycra Stitch Length (mm) 2.76 4/5 2.97 4/5 3.15 5 Grey Scale Grade 4/5 4.5 4.5 4.5 4 3.5 3 2.5 2 Grey Scale Grade 1.5 1 0.5 0 Stitch Length 4.5 Plain S/J Fabric with Lycra Stitch Length (mm) Grey Scale Grade 2.76 4/5 2.97 4/5 3.15 4/5 5 4.5 4.5 4.5 4 3.5 3 2.5 2 Grey Scale Grade 1.5 1 0.5 0 Stitch . !""""""""""""" #!#############$ %&' " ""& ""& "" "" ""% ""% ""( ""( "" ""% ""( Stch. !""""""""""""" #!#############$ %&' " ""& "" ""% ""( ""' ""! "". (out of 5) 2.76 4/5 2.97 3 3.15 2/3  !""""""""""""" #!#############$ %&' " "' & &'  ' % %' ( (' ' (' % ' Stch

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Mục lục

  • Slide 1

  • Slide 2

  • Slide 3

  • Introduction  

  • Sample fabric production

  • Different tests & calculation

  • Spirality

  • Impact of fabric stitch length on spirality

  • Slide 9

  • Piling

  • Impact of fabric stitch length on pilling

  • Slide 12

  • Slide 13

  • Slide 14

  • GSM

  • Impact of fabric stitch length on fabric GSM

  • Slide 17

  • Impact of fabric stitch length on cpi, wpi & fabric width

  • Slide 19

  • Dimensional Stability

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