◆ Influencing factors of tearing strength

① Raw materials

Different raw materials show obvious differences in the degree of resistance to external tearing and tensile forces.

② The organizational structure of the fabric

When other conditions are the same, the plain weave of the three original weaves has the lowest tear strength, the satin weaves the highest, and the twill weaves are somewhere in between.

Plain weave <Twill weave <Satin weave

③ Density of fabric

The effect of fabric density on the tearing strength of the fabric is more complicated. For low-density fabrics, the tear resistance increases as the density increases, but when the density is higher, the tear strength of the fabric decreases with the increase of the fabric density. The most critical factor is that the organization and density affect the tearing strength by affecting the slippage of the yarn.

④ Post-finishing processing technology of fabric

Sanding process: The sanding process is to polish the surface of the fabric to produce short and neat small fluff on the surface of the tissue. In this way, the yarn structure on the surface of the tissue is destroyed, and the yarn strength decreases. Resin finishing: For cotton fabrics, the yarn elongation of viscose fiber fabrics is reduced after combing, the fabric brittleness increases, and the fabric tearing strength decreases. The degree of decrease is related to the type of resin used and the processing technology.

Coating: Coating a layer of chemical slurry on the surface of the fabric to make the surface of the fabric have various functions (such as anti-wrinkle and waterproof). This type of process slurry will fix the warp and weft yarns of the fabric in relative positions and cannot move, which will cause The tear triangle area of ​​the fabric is greatly reduced. Therefore, the strength after the coating is significantly lower than that before the coating, and the tearing force must be evaluated when doing this type of process.

◆Measures to improve the lack of fabric tearing force:

1. Blended with high-performance fibers to improve the tearing performance of the fabric by increasing the strength of the yarn.

2. Increase the warp and weft density of the fabric, increase the twisting wave height, increase the number of yarns in the triangular area of ​​the fabric in the process of tearing, and improve the tearing performance of the fabric by increasing the number of yarns and the number of forces.

3. Change the fabric structure, improve the movement ability of the yarn in the tissue during the tearing process, and improve the tearing performance of the fabric by increasing the number of stressed yarns.

4. Use appropriate chemical additives to protect the tearing strength of the fabric. Hongsheng's tearing strength enhancer can effectively enhance the tearing strength of the fabric.