Textiles - Testing and evaluation for snagging resistance of fabrics - Part 3: Card roller method
1 Scope
This document describes the card roller method for testing the snagging resistance of fabrics, and the evaluation for snagging resistance.
This document is applicable to knitted and woven fabrics.
This document is not applicable to mesh-structure fabrics, tufted fabrics and non-woven fabrics.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 699-2015 Quality carbon structure steels
GB/T 6529 Textiles - Standard atmospheres for conditioning and testing
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
snag
surface defect in a fabric where a yarn or fiber is hooked by a sharp object
Note: Snag usually includes the hooked protrusions on the surface of fibers or yarns, such as coils, fiber loops, fiber bundles, fluff, etc.; distortion formed due to hooking of local yarns or fibers. Snag usually exists in one or several combinations of these phenomena.
[Source: GB/T 11047.2-2022, 3.1]
3.2
distortion
streak-like deformation on the surface of fabric due to hooking of local yarns or fibers in a fabric by sharp objects, which is obviously tighter than the adjacent yarns
[Source: GB/T 11047.2-2022, 3.2]
4 Principle
One end is fixed on the rotary cylinder and the other end is in a free state after stitching the specimen with the inner gasket. When the rotary cylinder rotates at a constant speed, the specimen contacts with the hook needle periodically, and drives the card roller with certain rotation resistance, then the specimen is hooked by the needle tip, resulting in appearance changes such as snags. After rotating for specified revolutions, evaluate the snag degree of the specimen.
Contents
Foreword I
Introduction II
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Equipment and materials
6 Atmospheres for conditioning and testing
7 Specimen preparation
8 Test procedure
9 Evaluation and result
10 Evaluation for snagging resistance
11 Test report
Bibliography
