Textile Materials: Fabrics (12): Drapability of Fabrics
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The degree and shape of the fabric when it sag due to its own weight is called drape. The degree of drape refers to the degree to which the fabric drapes under its own weight. The greater the sag, the better the drape of the fabric. Draping morphology refers to the characteristics of the extended portion of the fabric that can form a uniform, smooth and high-frequency undulating surface.
Fabric drape can be divided into static drape and dynamic drape.
1. Static drape
Refers to the drape and drape shape of the fabric in its natural state.
The fabric undergoes both bending and shearing during drape. Therefore, in addition to the various factors that affect the bending properties of the fabric, there are also sliding, rotation and shearing effects between the spinning yarns, especially at the intersection points or holding points.
Generally, the more interlacing points, the greater the interlacing resistance, the larger the fitting and contact area between the spinning yarns, the more hairiness, the larger the fiber friction coefficient, and the greater the rigidity, which will lead to greater shear stiffness of the fabric, thereby reducing the drape of the fabric.
2. Dynamic drape
It refers to the drape, drape shape and flutter frequency of the fabric (work clothes) in a certain leisure state.
As far as the fabric itself is concerned, the main factors that affect the static drape of the fabric also affect the dynamic drape. In addition, the bending hysteresis constant and shear hysteresis constant of the fabric have a great influence on the dynamic drape of the fabric. Generally speaking, the smaller the hysteresis constant, the better the dynamic drape of the fabric.
As far as experimental conditions are concerned, the influence of rotation speed is obvious, and the influence of temperature and humidity will cause the softness and weight gain of the fabric. So it has a definite impact.
Fabric Materials (Twelve): Drapability of Fabric
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