The concept of Fabric and Its Properties - Stiffness

Nowadays, human research and production of fabrics are more and more thorough, and the characteristics of fabrics are more detailed; for example, physical properties: density, yarn count, gram weight, yarn twist, yarn strength, fabric structure, fabric thickness, coil length , fabric coverage factor, fabric shrinkage or weaving rate, skew deformation,  tensile strength, tear strength, seam slippage,seam strength, adhesion strength, single yarn strength, yarn strength per unit linear density, anti-hook wire, crease recovery angle test, stiffness test, water repellency test, leak resistance, elasticity and recovery force, air permeability, water vapor permeability, bursting strength, abrasion resistance test, resistance Pilling, etc.

The bending performance of the fabric is an important physical parameter for us to study the stiffness, drapability, softness and other properties of the fabric. Usually, the bending length (also known as the drape stiffness) and the bending stiffness (also known as the bending stiffness) are used. A mechanical index to express "the ability of the fabric to resist the shape change in its bending direction", collectively referred to as stiffness.

According to research and analysis, in most cases, the influencing factors of fabric stiffness are yarn diameter, fabric geometric structure, twist size, fabric thickness, fabric structure, fabric density, etc.

The influence of yarn diameter and twist on the stiffness of the fabric: when the yarn diameter is thick and the twist is large, the bending stiffness of the yarn is larger, and the fabric is stiffer. If the weft of the multi-jet fabric is regarded as a strand, the more the number of weft yarns combined, the stronger the stiffness of the fabric. But in fact, this way of weft is not equivalent to strands, the weft is only combined without twisting. Therefore, the fabric is not too stiff. The influence of the structure of the fabric on the stiffness of the fabric is mainly that the more weaving points in the fabric, the shorter the floating length, the greater the tangential sliding resistance between the warp and weft yarns, and the smaller the possibility of relative movement between the warp and weft yarns in the fabric. The stiffer it is; when the thickness of the fabric increases, the bending stiffness of the fabric also increases significantly. In addition, there are many factors that affect the stiffness.

The XHF-42AII Fabric Stiffness Tester produced by our company is used for cotton, wool, silk, hemp, chemical fiber and other woven fabrics, knitted fabrics, non-woven fabrics, and coated fabrics. It is also suitable for the stiffness measurement of flexible materials such as paper, leather, and film, meeting the various needs of manufacturers.

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