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Automated Pilling grading system

Automated Pilling grading system

DSPAT Pill grading tester
Automated pilling grading instrument

An automated pilling grading instrument is used to Analyse the pilling formation and give grades accordingly.

The PillGrade system is a 3D fabric scanning system that is a kind of patent-pending technology to objectively and repeatedly grade fabric swatches for surface properties. 

In this instrument, a pilling-formed specimen (Output of ICI or Martindale pilling instrument) is placed on the platform.

The instrument scanned the specimen by the light source into the closed chamber.

The system gave outputs of pilling and fuzziness data, in addition to the 1-5 pilling grade according to both ASTM and ISO standards. 

PillGrade’s method for inspection allows the instrument to scan and grade fabrics according to weight, colour, and pattern. 

In this instrument, pilling is scanned according to its templet training, templet matching, segmentation, extraction of pill ball, size covered by ball/area of each pill, contrast, and density of pill.

This is done by gathering various temples of pilled fabric and comparing them with specimen scanned photographs. According to this analysis final results come and according to that pilling, grade shows in the display.

In this instrument, Any type of fabric can be graded like woven, nonwoven, knit, fleece, automotive, or any blend or material.
Fabric patterns and colours are “invisible” to PillGrade. 

Generally, the Specimen size for this instrument is in the range of 4” x 4” (10 cm x 10 cm) to 6” x 6” (150 mm x 150 mm).

This instrument provides data on the number of pills, histogram of pill sizes, average pill size, pill density (pill / in2 and pills / cm2), and fuzz loft. 

DSPAT pilling grade
Pilling grade

Questions -

  1. What is automated pilling grading?
  2. How automated pilling grading works?
  3. Give a description of pilling grading.


Booth, J. E. :. (n.d.). Principles of textile testing an introduction to physical methods of testing textile fibres, yarns, and fabrics. London: National Trade Press Ltd,1961. from

Cenote, M. (2015). Google Books. In The SAGE Guide to Key Issues in Mass Media Ethics and Law (pp. 847–858). SAGE Publications, Inc.

Ferreiro López-Riobóo, J. I. (2015). Long-term (2001–2012) study of a proficiency testing scheme for textiles. Accreditation and Quality Assurance20(4), 239–245.

Measurement of Specific Handle Force of woven fabrics. (2020, September 15). Textilecoach.

Objectively evaluating fabric handle. (n.d.). from

Sinclair. (2018, November 17). Fabric hand. Polymerexpert.Biz; Polymer Expert.

Subjective Evaluation of Fabric Hand. (2015, February 5). Textile Protection And Comfort Center.

(N.d.). from

For further reading

Part -1 Fabric pilling introduction

Part -2 Pilling measurement by ICI Pilling box tester

Part -3 Tumble Pilling tester

Part -4 Automated Pilling grading system

Part -5 Snagging on the fabric surface and its measurement

Writer - 

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