This test method covers the determination of the propensity of a fabric to form pills from fuzz under test conditions intended to simulate normal wear using the brush pilling tester.
This procedure is generally applicable to all types of apparel fabrics including both woven and knitted fabrics.
NOTE 1—For other test methods for the pilling resistance of textiles,refer to Test Methods D 3512, D 3514, and D 4970.
The values stated in either SI units or inch-pound units are to be regarded separately as the standard. Within the text,the inch-pound units are to be regarded separately as the standard. Within the text, the inch-pound units are shown in parentheses. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Terminology：
1、fuzz, n—untangled fiber ends that protrude from the surface of a yarn or fabric.
2、pilling resistance, n—resistance to the formation of pills on the surface of a textile fabric.
3、pills, n—bunches or balls of tangled fibers which are held to the surface of a fabric by one or more fibers.
4、For definitions of other textile terms used in this test method, refer to Terminology D 123.
Summary of Test Method：
Pilling and other changes in surface appearance, such as fuzzing, which occur in normal wear are simulated on laboratory testing machines. Fabrics are subjected to simulated wear conditions: first brushing the specimens to free fiber ends that form fuzz on the surface of the fabric, then rubbing two of the specimens together in circular motion to roll the fiber ends into pills. The degree of fabric pilling is evaluated by comparing the tested specimens with visual standards, which may be actual fabrics or photographs of fabrics, showing a range of pilling resistance. The observed resistance to pilling is reported using an arbitrary rating scale.
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