Polyester twisted yarn has become one of the important raw materials in the textile industry due to its high strength, strong wear resistance and wide range of uses. However, purchasing high-quality polyester twisted yarn is not an easy task, especially when facing the uneven product quality on the market, buyers need to have clear purchasing standards and quality inspection awareness. The following will explain in detail how to accurately select suppliers and high-quality polyester twisted yarn from three aspects: purchasing precautions, common certifications and quality inspection standards.
Key considerations for purchasing polyester twisted yarn
When purchasing polyester twisted yarn, the following aspects are particularly important:
Yarn specifications
- Twist: Twist is a key indicator that affects the performance of polyester twisted yarn, including S twist and Z twist. The size of the twist determines the strength, flexibility and touch of the final fabric of the yarn.
- Purchasing advice: clarify your application scenario (such as weaving or knitting) and end product requirements, and choose the appropriate twist.
- Fiber fineness (Deniers or Tex): The thickness of the fiber directly affects the purpose of the yarn. For example, 40D/2 is suitable for fine fabrics, while 150D/3 is more suitable for industrial yarns.
- Procurement advice: Confirm the specifications with the supplier to ensure that they meet the standards of the final product.
Polyester twisted yarn is widely used in scenarios with high strength requirements, so its strength and abrasion resistance are key indicators.
- Breaking strength: Choose yarn with good breaking strength to ensure the durability of textiles during processing and use.
- Abrasion resistance test: Pay attention to the abrasion resistance data provided by the supplier, especially for yarns used for industrial purposes.
Uniformity and appearance quality
- Yarn uniformity: The uniformity of the yarn directly affects the texture and appearance of the finished fabric.
- Procurement advice: Ask the supplier to provide yarn uniformity data (such as CV value, coefficient of variation) and check whether it meets international standards.
- Surface defects: Check whether the yarn has problems such as hairiness, broken ends, and foreign fibers.
- Production scale and stability: Make sure the supplier has sufficient production capacity and inventory to meet your long-term needs.
- Delivery and logistics: Evaluate the supplier's delivery capabilities to avoid production being affected by supply delays.
Detailed explanation of international quality certifications for polyester twisted yarn
OEKO-TEX® Standard 100
- Significance: OEKO-TEX certification ensures that the yarn does not contain harmful chemicals and meets human ecological safety requirements.
- Buyer focus: It is particularly suitable for companies producing clothing and home textiles, which helps to meet the high standards of environmental protection and health in the international market.
- Significance: ISO 9001 certification is an important basis for evaluating the supplier's quality management level, ensuring that the yarn maintains consistency and traceability during the production process.
- Buyer focus: Choosing a supplier that has passed ISO 9001 certification can greatly reduce the risk of product quality fluctuations.
GRS certification (Global Recycling Standard)
- Significance: GRS certification indicates that the yarn contains a certain proportion of recycled fibers, which meets the requirements of sustainable development.
- Buyer focus: It is suitable for environmentally friendly products and brands that have a demand for sustainability.
Other common certifications
- REACH certification: Ensure that the product meets the requirements of EU chemical regulations.
- Environmental protection related certification: such as Bluesign certification, pay attention to the environmental friendliness of yarn.
Before purchasing, it is recommended to conduct the following quality inspections to ensure that the yarn meets your requirements:
Physical property inspection
- Strength test: Test the tensile strength of the yarn through a single yarn strength machine to ensure that it meets the weaving or use requirements.
- Abrasion resistance test: Use a standard Martindale abrasion tester to test the durability of the yarn.
- Check whether the yarn contains harmful chemicals such as heavy metals and azo dyes to ensure that it meets international environmental standards.
- Yarn uniformity test
- Use a yarn dryness meter to detect the unevenness of the yarn and evaluate its impact range.
Actual trial evaluation
- It is recommended to conduct a small-scale trial production of the yarn before bulk purchase to observe its performance on the equipment and the finished product effect.
How to avoid common problems in procurement?
- Blind pursuit of low prices: Low prices may mean quality compromises. It is recommended to evaluate the reliability of suppliers through sample testing and field visits during the initial purchase.
- Lack of clear technical parameters: In the inquiry and purchase contract, the yarn specifications, quality indicators and testing standards should be listed in detail to reduce disputes.
- Ignoring delivery time and after-sales service: Choose suppliers with stable supply capacity and perfect after-sales service to ensure smooth long-term cooperation.
Choosing the right supplier is the first step to ensure product competitiveness. If you have any questions or needs about purchasing polyester twisted yarn, please contact us Sinrylion polyester twisted yarn manufacturer, we will provide you with professional solutions!