How to use 4 Point System for Knits Fabric Inspection?

4 point system for fabric inspection is a standard method that is widely used in Textile and Apparel Industries. In this system fabric quality is evaluated by penalty points per 100 square yards.

Formula: Points / 100 sq. yd. = (Total points in roll * 36 * 100)/ (Total length in yards * width in inches) 
So, to evaluate fabric quality you need to know fabric width and length of the inspected roll or thān.  In case of woven fabric, length of the fabric roll is written on the Fabric roll tags. But knits fabrics are sourced in weight and supplier does not mention length.

That's why when it comes to use 4 point system in knits fabric, inspector finds it difficult to use given formula for calculating penalty points. To use the 4 point system for fabric inspection you need to calculate length of the fabric in a roll/thān. 

Follow standard method of 4 point system to mark defects, calculate total penalty points in a than according standard method explained in How to 4 point system in Fabric Inspection?

Evaluate fabric quality of Knits in 4 point system:

Step#1: Measure fabric length in a roll /thān
Generally you will get following specification in knitted fabric roll or find these
  • Weight of the Than (in Kgs) 
  • Fabric weight Grams per square meter (GSM) and 
  • Fabric width (inches) Note: always take open width for knit fabric
For example, fabric weight of a than is 50 kgs, fabric GSM 250 and fabric width (W) 46 inches (open width).

Use following formula to know approx length of the roll/thān with above information. 

Fabric length (in meters) = Fabric weight * 1000 /(Fabric GSM *Fabric Width * 0.0254)

Using data from above example

Fabric length (L) = (50*1000)/(250*46*0.0254) = 171.17 Meters

Step#2: Convert fabric length into yards. 
Multiplying factor is 1.09361
Fabric length in yards = 171.17* 1.09361 = 187.2

Step#3: Calculate total penalty points.
Suppose you have given total 34 penalty points to the above roll. Once you find the length of each fabric roll/ than use the above formula to calculate points per 100 square yards.

Point /100 square yards = (Total penalty points * 36 * 100)/(roll length * Width in inches)
= (34*36*100)/(187.2 * 46)
= 14.21
You are done.

Also See:



5S,3,Activewear,1,Apparel ERP,4,apparel industry,64,apparel news,38,Apparel Production,38,Apparel Software,33,AQL Chart,1,Attachments,1,Bamboo Fabric,1,Bangladesh,4,Blogs,1,Body Scanner,1,Books,35,Business Guides,14,Buyer,4,Buying House,4,CAD/CAM,2,Calculation & Formula,1,career,38,Change Management,1,China,1,Clothing,3,Clothing Brand,6,Compliance,5,Consumption,4,Costing,21,Cutting,25,Data Analysis,2,Defects,6,Denim,11,Directory,3,Drone,1,Dyeing,2,eCommerce,2,Education,5,End use,1,Event & Fair,18,Fabric,91,Fashion,5,Fashion Business,52,Fashion Design,4,Fashion Show,2,Fiber,6,Finishing,13,Fusing,1,Garment Business,3,Garment Exporters,1,Garment Industry,4,Garmenting,2,Gartex,1,GMT,1,GSM,3,Guest Post,7,Human Resource,8,Incentive system,1,Industrial Engineering,255,Industry 4,1,Infographic,5,Institutes,1,Interlining,2,Jeans,4,Knitting,5,KPI,10,Kurti,1,Laser Technology,2,Lean,27,Leggings,2,Line Balancing,3,Line layout,5,Living Wages,1,Machines,46,Manufacturing,57,Merchandising,121,MIS,27,MISC,27,Needle,1,News,5,NIFT,4,Operation bulletin,14,Operator,2,Operator Training,4,Performance rating,1,PLM,7,Printing & Embroidery,13,Problem Solving,2,Production Planning,28,Production System,1,Productivity,2,Project Report,1,QNA,137,Quality,76,Quality Circle,1,Quality manual,2,Quality system,16,Research project,4,Resources,45,Retailing,6,RMG,1,Salary & Wages,7,Sampling,27,Scheduling,6,Seam Sealing,1,Sewing Machine,5,Shirt Making,6,Skiiwear,1,Small-scale business,2,Smart Clothing,1,Sourcing,10,Spec Sheet,10,Sportswear,7,Spreading,2,Stitching,4,Store,2,Stretch fabric,1,Student corner,4,sustainable clothing,10,Sustainable Materials,1,T-shirt,4,Tailor,1,Tailoring Shop,3,Technology,93,Texprocess,1,Textile processing,14,Textile testing,24,Textiles,47,Threads,2,Towel,1,Trims & Accessories,19,videos,11,Washing,2,Waste,1,Wearable Tech,2,Work Study,47,Work wear,1,WRAP,1,Yoga wear,1,
Online Clothing Study: How to use 4 Point System for Knits Fabric Inspection?
How to use 4 Point System for Knits Fabric Inspection?
Application of 4 point system for inspecting knits fabrics.
Online Clothing Study
Loaded All Posts Not found any posts VIEW ALL Readmore Reply Cancel reply Delete By Home PAGES POSTS View All RECOMMENDED FOR YOU LABEL ARCHIVE SEARCH ALL POSTS Not found any post match with your request Back Home Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sun Mon Tue Wed Thu Fri Sat January February March April May June July August September October November December Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec just now 1 minute ago $$1$$ minutes ago 1 hour ago $$1$$ hours ago Yesterday $$1$$ days ago $$1$$ weeks ago more than 5 weeks ago Followers Follow THIS PREMIUM CONTENT IS LOCKED STEP 1: Share. STEP 2: Click the link you shared to unlock Copy All Code Select All Code All codes were copied to your clipboard Can not copy the codes / texts, please press [CTRL]+[C] (or CMD+C with Mac) to copy