1.The main effects of TPU elastic belt wrinkling and knotting bending are: the efficiency of lathe sewing, and sewing is slowed down because of wrinkling; Straightening hard will cause the belt to be stressed. After loosening, the sewing position will wrinkle, and even problems such as broken needles and belts will occur. Because of wrinkling, the sewn belt will wrinkle and arch.

2. The main effects of melting point or lines on the surface are: sewing is easy to get stuck, there will be a pause, and in serious cases, the needle will be broken, reducing production efficiency; When the melting point appears, it will cause problems such as width or thickness, reduce the shaping effect of clothing hem, and lead to unsightly clothing and exposed belt.

3. The main effects of mold patterns on foggy and white surfaces are: cracking and belt breakage when encountering pinholes, resulting in material waste, increasing material cost, reducing production efficiency and delaying construction period.