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DTY yarn, short for "Draw Textured Yarn," is produced by processing Polyester Partially Oriented Yarn (POY) on a false twist texturing machine. This process transforms the straight fiber structure into a coiled, highly elastic, and bulky one, which is key to DTY yarn's unique feel and performance.
The production process involves several key steps:
1. Raw Material Preparation: The raw material is Polyester Partially Oriented Yarn (POY), which has been partially stretched but still has low crystallinity.
2. Heating: POY yarn is heated in a heater, softening the fiber's molecular chains for subsequent stretching and texturing.
3. False Twisting and Texturing: This is the core step. The heated POY yarn passes through a high-speed rotating friction false twister. This gives the yarn a temporary twist, creating a crimped deformation. The crimped structure is then permanently set in a second heating or cooling zone.
4. Stretching and Setting: The yarn is stretched at a specific ratio to improve its strength and reduce its elongation. This is followed by a heat-setting process to stabilize the crimped structure, preventing deformation during weaving and use.
5. Winding: Finally, the processed yarn is wound onto a bobbin, completing the production of DTY yarn.
Different parameters directly affect the final performance of the DTY yarn.
| Parameter Category | Key Parameters | Impact on DTY Yarn Performance |
|---|---|---|
| Draw Ratio | 1.00-1.10 | Determines yarn strength and elasticity. A low ratio results in low strength; a high ratio reduces elasticity and makes the yarn stiff. |
| False Twist Ratio | 1.70-1.80 | Affects the yarn's crimp and bulk. A higher ratio leads to more crimp and a softer, bulkier feel. |
| Heater Temperature | 193-198°C | Softens the POY yarn for effective stretching and deformation. Excessive temperatures can damage the fiber's properties. |
| Setting Temperature | 175-180°C | Stabilizes the textured structure. High temperatures reduce elasticity; low temperatures result in poor setting. |
| Processing Speed | 450-550m/min | Impacts production output and needs to be adjusted while maintaining quality. |
DTY yarn holds a significant position in the textile industry due to its unique properties, which combine the best aspects of natural and synthetic fibers.
The most notable feature of DTY yarn is its excellent elasticity. The crimped structure from the false twisting process allows the fabric to stretch and quickly recover. This also creates air pockets between the fibers, giving the fabric a bulky, full hand feel similar to natural cotton.
Due to its unique microscopic structure, DTY yarn allows dyes to penetrate more easily. This results in vibrant, durable colors with high color fastness.
The bulky structure of DTY yarn produces fabrics with a soft, skin-friendly, and breathable feel. This makes it an ideal choice for close-to-skin garments and home textiles.
As a type of polyester filament, DTY yarn inherits polyester's inherent high strength and abrasion resistance. Fabrics made from it are durable, resistant to wear and tear, and have excellent wrinkle resistance.
To better understand DTY yarn's uniqueness, here is a comparison with another common polyester filament, FDY yarn (Fully Drawn Yarn).
| Feature | DTY Yarn (Draw Textured Yarn) | FDY Yarn (Fully Drawn Yarn) |
|---|---|---|
| Appearance & Hand Feel | Bulky, soft, crimped | Smooth, straight |
| Elasticity | High | Low |
| Bulkiness | High | Low |
| Uses | Ideal for elastic, soft knit fabrics like sportswear, T-shirts, and home textiles. | Suitable for smooth, high-strength woven fabrics like windbreakers, shirts, and linings. |
Because of its unique properties, DTY yarn is widely used in textiles, particularly in modern products that prioritize comfort, function, and aesthetics.
DTY yarn is indispensable in clothing manufacturing, especially for knitted fabrics requiring elasticity and softness.
Its high elasticity and breathability make it perfect for sports tops, pants, and yoga wear, and provides a comfortable and flexible experience.
Due to its soft, skin-friendly feel, DTY yarn is often used to produce casual clothing like T-shirts and hoodies, providing consumers with comfort.
Its soft, skin-friendly nature also makes it an excellent material for producing underwear and socks, reducing friction and enhancing comfort.
In home textiles, DTY yarn is used for products that need a soft hand feel and good drape.
Fabrics made from DTY yarn have good drape and wrinkle resistance, and their superior dyeing properties allow for rich colors and textures for home decoration.
Due to its soft and bulky properties, it is often used for bed sheets, duvet covers, and pillowcases to provide a comfortable sleeping experience.
In addition to apparel and home textiles, DTY yarn also has applications in some specialized industrial fabrics.
DTY yarn-based filter cloths are used in filtration equipment due to their excellent strength and abrasion resistance.
The durability of DTY yarn also makes it suitable for special packaging purposes.
The denier (dtex) and processing method of DTY yarn determine its specific application.
| Parameter Category | Denier (dtex) | Common Applications |
|---|---|---|
| Microfilament | 50-75 | Ideal for lightweight, soft apparel fabrics like underwear and T-shirts, offering a delicate feel. |
| Mid-Denier | 75-150 | The most versatile, used for various sportswear and home textiles like curtains, balancing softness and durability. |
| Heavy-Denier | 150-300 | Suitable for fabrics requiring high strength and abrasion resistance, such as backpacks, luggage, and some industrial fabrics. |
As the global textile market evolves and consumer demands shift, the future development of DTY yarn will focus on the following areas:
Future DTY yarn will go beyond basic elasticity and comfort to become more multi-functional and specialized. This will involve developing DTY yarns with specific properties like:
Moisture-wicking
Future DTY yarn production will rely more heavily on smart and automated technologies. This will increase efficiency, reduce energy consumption, and ensure consistent product quality. For example, Zhejiang Hengyuan Chemical Fiber Group Co., Ltd., a leader in the Chinese polyester yarn industry, with a capacity of 150,000 tons of polyester yarn per year, will continuously upgrade its technology to meet market demands for high quality and efficiency.
| Trend | Connection with Zhejiang Hengyuan Chemical Fiber |
|---|---|
| Sustainability | The company could focus on eco-friendly dyeing methods like "dope-dyed" yarn or using recycled polyester to reduce water consumption and pollution. |
| Functional Product Development | The company can leverage its expertise in producing FDY, POY, and DTY from 30D to 600D to develop functional DTY yarns with properties like moisture-wicking or antibacterial features for high-end markets. |
| Internationalization and Branding | The company's subsidiaries like Winnertex Group Limited and Hangzhou Henghang Import & Export Co., Ltd. demonstrate a strong global market presence. Its group brand, Hengyun, can build a stronger international reputation with high-quality and innovative DTY yarn. |
| Technical Innovation | As a "TOP 100 INDUSTRY COMPANY IN XIAOSHAN," the company can invest in R&D and equipment upgrades to improve DTY yarn production processes, such as developing more efficient texturing machines to create products with superior performance. |
The future market for DTY yarn will be defined by innovation, functionality, and sustainability. Industry leaders like Zhejiang Hengyuan Chemical Fiber Group Co., Ltd. will play a crucial role in these areas, driving the DTY yarn industry toward a broader future with their strong production capabilities and technical expertise.
Zhejiang Hengyuan Chemical Fiber Group Co.,Ltd. is a professional China polyester filament yarns manufacturers and polyester color yarn suppliers, Established in 2006 ,located in YaQianTown Xiaoshan Hangzhou – One of the Center of polyester yarn Industry in China.
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