This presentation discusses pilling, which is the formation of small balls of fiber on fabric surfaces caused by abrasion during wear. Pilling occurs due to factors like wear, rubbing, fiber migration, heat, soft yarn, and excess short fibers. Methods to reduce pilling include using high-twist yarn, air jet spinning to reduce fiber migration, increasing fiber density and thread count, singeing to reduce hairiness, and longer fibers. A pilling test involves sewing seams in fabric samples and tumbling them in a box for 5 hours at 18,000-36,000 revolutions to evaluate pilling.

1. Presented by :
Name : Md. Abdul Motaleb
ID: 152-23-4386
Section: A
Dept: TE (EVE)
Daffodil International University

2. Welcome To My
presentation topic on
Pilling

3. What is pilling
A pill, colloquially known as a bobble, is a small
ball of fibers that forms on a piece of cloth. 'Pill' is
also a verb for the formation of such balls. Pilling
is a surface defect of textiles caused by wear, and is
considered unsightly.

4. Pilling
 Pilling is formation of little balls of fibers (pills) on
the surface of a fabric which is caused by abrasion in
wear.
 Pilling is the tendency of fiber to come loose from a
fabric surface and form balled particles of fiber.
 The degree of pilling will depend on the type of yarn
or fabric the structure and finish.

5. Causes of pilling
 Due to wear and abrasion.
 Due to rubbing action of fabric with particular parts of
garments and body.
 Due to migration of fibers from constituent yarn in
fabric.
 Due to heat in case of thermoplastic fiber.
 Due to soft twisted yarn.
 Due to excess short fibers.

6. Reduction or Minimizing pilling
 By using high twisted yarn.
 By reducing migration of fibers by means of Air Jet
spinning process.
 By increasing inter fiber friction.
 By increasing linear density of the fiber.
 By using high number of threads per unite length.
 By singeing process to reduce yarn hairiness, longer fibers.

7. Pilling Test
 For this test four specimens each 5inch x 5inch are cut from the fabric.
 A seam allowance of 12mm is marked on the back of each square. In two of the samples the seam is
marked parallel to the warp direction and weft direction.
 The sample are then folded face to face and a seam is sewn on the marked line.
 All four specimens are then placed in one pilling box.
 The usual number of revolution used in
the test 18000 to 36000 which take 5 hrs.