What are the reasons for the foldability of pure cotton knitted fabrics?

1. The structure of the yarn (twist, fineness, etc.)

Too high or too low twist of the yarn is not conducive to the recovery of fabric crease; for the same cotton yarn, the increase of yarn diameter (fineness) will cause the increase of yarn resistance to deformation, and the anti-wrinkle performance of the fabric. Become stronger.

2. Structure of knitted fabric (density, thickness, organization, etc.)

As the density of the fabric increases, the fold recovery capacity of the fabric generally decreases. The main reason may be that the increase in density directly increases the friction between the yarns and affects the recovery performance; the thickness of the knitted fabric increases, and the rigidity generally follows As it increases, the fabric's wrinkle recovery also increases; the influence of knitted fabrics on the wrinkles is more complicated, and there is no specific regularity. Usually, the wrinkles are particularly obvious in the knitted fabrics of weft plain weave (jersey) and terry weave.

3. External conditions (force size, time, etc.)

The fabric is forced to bend under the action of external force. The wrinkle generation mainly depends on the amount of fabric deformation (the size of the force) and the internal stress relaxation (action time) of the fabric. As the force increases and the action time extends, the fabric's wrinkle recovery ability decreases .

4. Processing method

If the intermittent rope method is used for processing, the fabric is folded and squeezed in the equipment, which is more likely to produce deformation and wrinkles; while the open-width continuous production method is not easy to produce wrinkles, and the surface of the fabric is smoother.

5. Chemical wet processing process

Desizing, scouring, bleaching, mercerizing, heat setting and other pre-processing, as well as dyeing, resin (functional) finishing and other processes will have varying degrees of impact on the fold performance of the fabric.