Snagging Test Method and Snagging Tester

 

Definition

Snagging refers to the yarn or fiber in the fabric being hooked or broken by sharp objects, forming loops, fiber (bunch) loops, fluff or other uneven defects floating on the surface of the fabric. The snagging resistance of fabrics is particularly important for fabrics with looser structures, especially knitted outerwear fabrics, filament fabrics and fabrics with long floating lines.

Factors affecting the snagging performance of fabrics

Fiber properties
Compared with non-circular cross-section fibers, circular cross-section fibers are more likely to snag. Compared with short fibers, filaments are easier to snag.
When the fiber has high strength and long elongation, the snagging phenomenon is obvious; when the fiber elongation is small and the elasticity is high, snagging can be alleviated and eliminated through elastic retraction. When the fabric is pulled by sharp objects from the outside, fibers or yarns with better elasticity can alleviate the external force through their own elastic deformation. After the external force is removed, due to the elastic deformation recovery, the hooked wire loop returns to the original tissue, which reduces the snagging phenomenon. In the selection of raw materials during production, the elongation of the fiber must be considered. For varieties that are easy to snag, choose raw materials with better elongation.
Yarn shape
The general rule is that those with a tight structure and even stems are not prone to snagging. Increasing yarn twist can reduce fabric snagging. Thread fabrics are less prone to snagging than gauze fabrics. Low bulk yarn is less prone to snagging than high bulk yarn.
Fabric structure
The fabric has a tight structure, which binds the fibers to a large extent, and the friction between fibers is large, so it has good resistance to snagging. For example: plain weave > basic twill > stripes > honeycomb, compound twill > messy. Fabrics with a flat surface are not easy to snag. While taking aesthetics into account during production, fabrics with short floating lengths and many interweaving points can be designed for processing. Because rough, sharp objects are not easy to hook the tissue points of this fabric.
The snagging phenomenon of knitted fabrics is more obvious than that of woven fabrics. Among them, weft knitted fabrics are not easy to snagging; knitted fabrics with large longitudinal and transverse densities and short loop lengths are not easy to snagging.
Post-processing
Heat setting and resin finishing can make the fabric surface smoother and smoother, and the snagging phenomenon can be significantly improved or eliminated.

Snagging Tester

ICI Mace Snagging Tester
Snagging Resitance Tester is used to determine the tendency of fabrics to snag, (pull yarn loops from fabric) in normal wear. And suitable for woven and knitted fabrics made by textured yarn, non-textured yarn, and spun yarn, etc., not suitable for the mesh fabrics, tufted fabric, and non-woven fabrics, etc.4 pcs Felt Sleeve use special material. Length of chain can be adjustable. Rotating cycle number can be pre-settable and digitally displayed,Please buy YG908E Pilling Assessment Box together to use it
ICI Mace Snagging Resitance Tester complies with ASTM D3939, JIS L1058 etc international and retailer standards.
Bean Bag Snag Tester
Bean Bag Snag Tester is used to determine the snagging and picking characteristics of knitted fabrics by tumbling fabrics pillows containing a weighted bean bag within two separate test cylinders provided with eight pinned bars, rotating at 20RPM for 100 rev. provided with predetermined electronic counters.
It equipped with transparent plexiglass security cover, protect the operator and easy to observe testing process; Automatically stopped by the counter after predetermined revolution reach.
Bean Bag Snag Tester complies with ASTM D5362, JIS L1058, etc international and retailer standards.

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