Dyeing refers to the process of dyeing yarns or filaments and then weaving with dyed yarns. Colors of yarn-dyed fabrics are mainly bright and bright, and patterns are distinguished by color contrast.
Advantages: Dyed fabrics make use of yarns of different colors to cooperate with fabrics to form various beautiful pattern patterns, which have a stereoscopic sense compared with common printed fabrics.
The dyeing fastness of dyed fabrics is better because dyeing of dyed fabrics with raw yarn has strong dye permeability.
When yarn-dyed fabrics are woven by multi-shuttle and multi-arm weaving, different fibers or yarns can be interwoven into a variety of colorful and delicate patterns.
Because yarns of color or pattern are used in yarns of yarn dyeing and various changes in structure, cotton yarns of poor quality can still be woven into beautiful varieties.
Disadvantages: Due to the large loss of dyeing, weaving, finishing and other processes, the output of table cloth is not as high as that of white grey cloth, so the investment cost is high and the technical requirements are high.
Yarn dyeing of dyed yarns for yarn dyeing is generally divided into two ways: dyed yarn and dyed yarn. Generally speaking, dyed yarn refers to woven fabrics on shuttle looms, but knitting machines can also make dyed knitted fabrics. Compared with dyed fabrics, dyed fabrics have a unique style, but the price is expensive, because the total loss of dyed yarn, weaving and finishing of dyed fabrics is relatively large, and the output of dyed fabrics is less than that of dyed fabrics The production of white cloth is high, so the cost is increased.
Features: Good color fastness, because it is dyed yarn first, color will penetrate into the yarn, and dyed cloth generally peel off the yarn to see that there will be no dyeing. Small initial order. Whatever yarn, density, texture and color can be made in tens of meters and hundreds of meters, but it is very difficult to customize dyed printed cloth without grey cloth, and dyeing and printing process will also restrict small batch production.
Panchromatic weaving: yarns dyed or partially dyed in warp and weft yarns (or fabrics with several colored yarns interwoven with white yarns).
Half-color weaving: Warp or weft yarns are dyed or partially dyed. Gray yarns can not be used for dyed fabrics. Because the tension and shrinkage of gray yarns are different from those of dyed yarns, they must not be used in warp direction, but in weft back finishing, the fabric will be deformed because of shrinkage. Therefore, generally colorless yarns are treated by semi-bleaching or full-bleaching.
Difference
1. Full-color weaving
A: In order to achieve the effect of different colours - mdash; & mdash; dyeing different colours with the same material can not be done after dyeing and finishing, but the use of yarn weaving can achieve < br />.
B: Requirements of color fastness and color light - mdash; & mdash; yarn-dyed fabric has good color fastness and good color and light sensitivity < br />.
C: The requirement of hierarchical sense - mdash; & mdash; the requirement of obtaining a good hierarchical sense
2. Half-color weaving
Different warp and weft materials & mdash; & mdash; different warp and weft yarn materials have different requirements on dyeing performance, and semi-coloured yarn can be used to reduce costs and increase patterns.
In fact, it is very simple to judge whether the fabric is dyed or not.
Basically more than two colors, and the same ingredients (such as cotton, polyester) are basically yarn-dyed fabrics. If it is plain, it depends on the quality and color fastness of the fabric. The quality of plain cloth woven by ordinary colors is better than that of dyed cloth. The fabric is fresh and clear. Fastness is also higher than dyed fabrics.
There is another way to distinguish between dyed fabrics and dyed fabrics. For dyed fabrics, dyed yarns are dyed first and then woven. Therefore, if dyed fabrics and dyed fabrics are normal, look at the positive and negative sides. If not, take a thread. If both inside and outside are one color, it is dyed fabrics, but if there is a layer of color on the outside surface, it is dyed fabrics.
