Abstract:Polyester is a synthetic polymer made from PTA and MEG. It is used to produce a variety of products including yarns, fab...
Polyester is a synthetic polymer made from PTA and MEG. It is used to produce a variety of products including yarns, fabrics and PET chips. It is a strong and elastic fiber and can be used for a wide range of applications, such as clothing, footwear, automobiles, etc.
Spun-Dyed Yarns: Color Coordinate Variation
One of the main problems in spinning spun-dyed polyester filament is that it is difficult to achieve a stable and consistent color coordination. This is because the value (L) and chroma (C) of each fiber changes depending on different production methods and processing conditions. This is also a problem for yarns that have been woven with multiple dyed colors.
In addition, the color of the yarn may vary slightly due to the twist multiplier and strand spacing as well as the crimp ratio. However, the hue-angle of these yarns is still generally stable. In order to solve this problem, a number of studies have been conducted.
During the spinning process, the color of the polyester filament is affected by a large number of factors, such as the quality of the fibers and the twist. It is a major issue in the textile industry because it can affect the quality and aesthetics of the finished products.
To address this problem, Korteks has developed a low-temperature dyeing project that allows a wide range of yarns to be dyed at a temperature as low as 100 C. This allows a more sustainable dyeing process that saves time, energy and costs.
We have also demonstrated that this method is versatile enough to obtain various kinds of colored composite yarns and endow the weaved fabric with different patterns. We hope that this work can be useful for the development of colored spun-dyed yarns and facilitate their application in fashion textiles.
The Color of Spun-Dyed Polyester Filaments: Optical Evaluation
To determine the spectral reflectance of the spun-dyed polyester filaments, they were first tested four times at different angles and then the average was taken as the final spectral reflectance value. This data was then compared with the reference data using the software.
The results showed that the spectral reflectance of the spin-dyed polyester filaments varied only slightly with the increase of the crimp ratio. Furthermore, the value and chroma of the polyester filaments were remarkably higher when they were spun on a pentagonal cross-section.
Another group of three more kinds of colored polyester filaments were also tested and found that their spectral reflectance also varied slightly with the increase of the crimp rate. Their value and chroma were likewise higher when they were spin-dyed on a round cross-section.
These findings suggest that the spectral reflectance of the spun-dyed filaments can be controlled by changing the processing methods and the crimp ratio. This can improve the consistency of the color coordination and the appearance of the yarns.
