Quality Control of Sewing Thread and Zipper

Quality Control of Sewing Thread:
A slender, strong strand or cord, especially one designed for sewing or other needlework. Most threads are made by plying and twisting yarns. A wide variety of thread types are in use today, e.g., spun cotton and spun polyester, core-spun cotton with a polyester filament core, polyester or nylon filaments (often bonded), and mono filament threads.
Sewing thread
Following Features of Sewing Thread are Considered:

1. Thread Construction/Ticket number
  • Thread count
  • Thread Ply
  • Number of twist
  • Thread balance
  • Thread Tenacity
  • Thread Elongation
2. Sew ability
3. Imperfection
4. Thread finish
5. Thread color
6. Package Density
7. Winding
8. Yardage
Quality Control in Zipper:
A zipper, zip, or zip fastener, is a commonly used device for temporarily joining two edges of fabric. It is used in clothing (e.g., jackets and jeans), luggage and other bags, sporting goods, camping gear (e.g. tents and sleeping bags), and other items. 
 Following Factors are Considered in Zipper:
  1. Proper dimension of zipper
  2. The top and bottom end should correctly sewn
  3. The tape and color of zipper should be uniform
  4. Slider has to be locked properly
  5. The slider should move properly 


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