Quality requirements of socks:
1 The requirements are divided into two aspects: appearance quality and internal quality. The appearance quality includes specifications and dimensions, surface defects, and sewing requirements. The internal quality includes vertical and horizontal extension value, fiber content, formaldehyde content, PH value (4.0-7.5), color fastness to washing, color fastness to water, color fastness to perspiration, color fastness to rubbing, and saliva resistance Color fastness, peculiar smell, decomposable aromatic amine dyes and other indicators.
2 Formaldehyde content (formaldehyde content / MG / KG, infants ≤20, adults ≤75), PH value (4.0-7.5)
3 Color fastness to washing, color fastness to water, color fastness to perspiration, color fastness to rubbing ≥3 grade, decomposable aromatic amine dye replacement.
Process requirements for socks
1. The socks knitted by the machine are usually off the machine from the front to inspect the quality of the socks, such as the width of the mouth, the length of the mouth, the horizontal stretch size, and the straight stretch size.
2. After machine knitting, there are more important transitional shaping: the socks must be shaped at high temperature and high pressure before they can reach the size and appearance required by the process. The setting machine has high pressure setting and low pressure setting. The machines have domestic and imported setting machines. The imported machines have good quality and long service life, but the output is low, and the output of artillery is high. According to the process requirements, different shaped sock panels are selected according to the different raw materials. The steam pressure and holding time will finally reach the quality standard of qualified process, soft hand feeling and good elasticity.
The packaging is carried out according to different folding methods, tag hooks, and different packaging methods of bags according to packaging requirements.