Factors affecting fabric stretch and tear strength - garment manufacture_garment Factory

The tensile and tearing strength of fabrics is an important indicator in the testing of woven fabrics. Through in-depth discussion of some factors that affect the tensile and tearing strength of fabrics, we can find out ways to improve the tensile and tearing strength of fabrics. Provide certain reference for further improving product quality.

The main factors that affect the tensile and tear strength of fabrics are as follows:

1. It is related to the breaking strength and strength of warp and weft yarns.

This is related to the fiber raw material material and blending ratio of the yarn, the fineness of the fiber itself (count or special number) and the fineness of the yarn (count or special number), yarn uniformity, moisture regain or moisture content, single Factors such as yarn or strands, the twist (twist coefficient) of single yarn and strands, the storage life of the fiber or yarn are all relevant. There are also factors such as elastic fiber including its elongation that will cause large differences.

2. The factors that affect the strength of fabrics are also related to the weaving method and weaving conditions of the fabric (such as knitted fabrics and woven fabrics), organizational structure (such as plain weave, twill, satin weave, jacquard, others, etc.), and warp and weft yarn density.

The warp strength and the weft strength are different, and the bursting strength is also different. Whether there is a selvage edge, whether it is a solid edge or a raw edge, whether defects and wrinkles are avoided, and the distance from the edge of the original fabric may all be different (so sampling must be At least 150 mm away from the edge of the fabric). In addition, the strength of sized gray fabrics and desized fabrics, fabrics that have been dyed and finished, especially those that have been impregnated and specially finished, will vary greatly. Weaving technology, dyeing, sanding, etc. all have an impact. Thick yarn shows better strength than thin yarn, twill is better than plain weave, unsanded is better than sanded, and the less corrosive the dyeing, the better.

3. The different strengths of yarn-dyed fabrics are related to the original yarn strength, warp and weft density, yarn fineness, and finishing process. To improve the strength of yarn-dyed fabrics, these items must be improved. .

The stretch and tear strength of non-iron fabrics will also decrease after non-iron finishing, which directly affects the durability of the fabric. The tensile and tear strength of the fabric, the strength and elongation of the yarn, the interweaving resistance, and the shape and structure of the fabric before and after no-iron finishing have a significant impact on the strength. Fabrics woven from yarns with high strength and elongation have a large stress triangle area when they are torn. The number of yarns that jointly bear stress is large, and the tearing strength is high. The tissue structure and warp and weft yarn density affect the interweaving points and slippage between yarns. If there are fewer interweaving points, the yarns will easily slip, and the tearing strength of the fabric will be high.

4. After a period of actual wearing of clothing, due to friction, the yarns in the fabric become thinner, and certain parts of the clothing often undergo sudden tearing.

For example, some parts of the buttocks of pants and parts of clothing caught by sharp objects when squatting. The external force exerted on these parts causes the yarns inside the fabric to be subjected to extreme loads one by one and break. During the use of textiles, if they are subjected to local concentrated loads for a long time, the strength may reach the limit and decrease, thereby affecting the tensile and tearing strength of the fabric.