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Standard:     ASTM

Method:         D4970
 
Title:               Standard Test Method for Pilling Resistance and Other Related Surface Changes of Textile Fabrics: Martindale Tester
 
Overview

The pilling of textile fabrics is a very complex property because it is affected by many factors that include: type of fiber or blends, fiber dimensions, yarn and fabric construction, and fabric finishing treatments. The pilling resistance of a specific fabric in actual wear varies more with general conditions of use and individual wearers than in replicate fabric specimens subjected to controlled laboratory tests. This experience should be borne in mind when adopting levels of acceptability for a series of standards.

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 on an arbitrary scale ranging from 5 to 1 (no pilling to very severe pilling).

This test method is applicable to a wide variety of woven and knitted fabrics that vary in pilling propensity as a result of variations in fiber, yarn and fabric structure, and finish. The applicability of this test method to nonwoven fabrics has not been determined. For more information, visit www.astm.org.

Samples
1.2 This test method is not suitable for fabrics thicker than 3 mm [0.125 in.] because such fabrics cannot be mounted in the specimen holder.
1.3 The fabric may be laundered or dry cleaned before testing.
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

Please note:
IPS cannot sell or otherwise provide standards, specifications, or test procedures to third parties.

 

Serving clients in Wisconsin and the Midwest to the United States and internationally, Integrated Paper Services, Inc. (IPS) is an independent physical and analytical testing laboratory specializing in personal care product, medical supplies, nonwovens, fiber analysis and the pulp, paper and allied industries.

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