Steps for developing and designing knitted circular knitting machine fabrics

1: Steps for developing and designing fabrics for large circular machines
Steps for developing and designing fabrics for large circular machines
(1) Firstly, design the organizational structure and pattern of the fabric;
(2) Select and determine the type and specifications of raw materials;
(3) Determine the physical indicators of the fabric;
(4) Processing techniques (preparation process, weaving process, dyeing and finishing process, etc.);
(5) Cost accounting;
(6) Develop a plan and test weave samples.
2: Method for developing and designing large circular machine fabrics
(1) Determine organizational structure
Choose different tissue structures according to different purposes, such as choosing flat needle tissue, ribbed tissue, etc. for underwear that requires softness and elasticity;
(2) Selected raw materials:
The outer garment needs to be stable in size, not deformed, have a body structure, and have a beautiful appearance, so chemical fibers need to be selected; Underwear requires softness, warmth, etc., and often uses materials such as cotton yarn.
(3) Determine physical indicators:
Generally, it includes weight, width, density, color fastness, shrinkage rate, etc.
A little experience for reference!
3: Acetate silk fabric (YC)
Acetate fiber has the same luster and unique properties as mulberry silk, with excellent drape and hand feel. The knitted fabric produced using it has a smooth hand feel, comfortable wearing, moisture absorption and breathability, light texture, low moisture regain, low pilling and anti static properties. Through careful dyeing treatment, the fabric becomes more prominent.

Dyeing key points: Process flow: Inspection of raw fabric → cutting → pre shaping → dyeing → softening treatment → drying → shaping → cooling → packaging and storage.
Instructions:
The raw fabric coming from the weaving workshop needs to be inspected in order to distinguish responsibilities; After fabric inspection, loosen the fabric and leave it for 24 hours before proceeding with cutting.
When pre shaping, the temperature should be controlled at 180-185 ℃, and the width of the door should be about 10% larger than that of the finished product, in order to ensure that the finished fabric surface is flat and the size is stable.
Dyeing involves pre-treatment followed by the addition of a softener.
Drying is carried out at 145 ℃, and then cooled in 1-2 ovens before shaping, cooling, packaging, and storage.
Operation method:
Heat the water to 40 ℃, add the fabric and cleaning agent, and wash away the stains on the fabric. Then add all dyes and additives.
At around 40 ℃, after adding dyes and additives, the temperature is rapidly raised to 86-90 ℃ at a rate of 1.5 ℃/min. At this temperature, the light color is kept for 30 minutes and the dark color is kept for 45-60 minutes.
After insulation, cool down to 60 ℃ at a rate of 1.5-2.0 ℃/min for reduction cleaning.
Staining:
Adjust the pH value of acetic acid to 5.5 for light colors and 4.5~5.0 for dark colors;
Add 1-3 g/L JHB type softener;
Add low-temperature dispersed dye ET according to color;
Reduction cleaning: Na2CO3 1-2g/L; Yuanming powder 0.5-1.0g/L;
Temperature range of 85 ℃ to 90 ℃; Time 10-20 minutes
The development and design of knitted fabrics using new raw materials and new organizational structures is an inevitable trend in market demand; Only in this way can the technological content and added value of the product be improved, and the product will be favored by consumers. We hope that colleagues can develop more innovative knitted fabrics and contribute to consumers.