What are the common quality problems of polyester hot melt yarn?

As a special textile material, the quality problems of polyester hot melt yarn mainly involve the following aspects:

1. Melting point control problem
A key feature of polyester hot melt yarn is its low melting point, which enables it to melt and bond to other materials at a specific temperature. However, improper control of the melting point may lead to poor thermal bonding or accidental melting during processing. According to the product details of Fujian Yiming Textile Co., Ltd., the initial melting point of polyester hot melt yarn is 110-140°C, and precise control of this range is essential to ensure product quality.

2. Oxidation and yellowing problem
Polyester hot melt yarn is prone to oxidation and yellowing when exposed to air for a long time, which affects the quality and appearance of the product. This oxidation process not only affects the color stability of the product, but may also affect its physical properties

3. Strength and wear resistance problems
Polyester hot melt yarn is characterized by its high strength and wear resistance, but if problems occur during the production process, it may lead to a decrease in strength and reduced wear resistance. Fujian Yiming Textile Co., Ltd. emphasizes the high strength and wear resistance of polyester hot melt yarn, which shows that these performance indicators need to be strictly controlled during the production process.

4. Washability issues
Polyester hot melt yarn needs to have good washability to ensure that it will not fall off or deform after multiple washings. Insufficient washability will directly affect the service life of the product and user experience

5. Environmental protection and sustainability issues
As a synthetic fiber, the waste generated during the production of polyester hot melt yarn needs to be recycled and reused to reduce the impact on the environment. The environmental protection and sustainability of products are important considerations for the modern textile industry

6. Stability and temperature resistance issues
Polyester hot melt yarn needs to show good stability under various temperatures and environments, and have a certain high temperature tolerance. The study on the influence of heat treatment tension changes on the structure and properties of high modulus low shrinkage polyester industrial yarn in post-processing shows that tension control during heat treatment is crucial to maintaining product performance

7. Static electricity issues
Regenerated polyester yarn is prone to static entanglement during the production process, which will cause the fiber to be hot-melted on the surface of the needle cloth and cannot be combed normally, thereby increasing defects. Controlling the fiber oil content and increasing the relative humidity of the workshop are the key technical measures to solve this problem

In summary, the common quality problems of polyester hot melt yarn involve melting point control, oxidation yellowing, strength and wear resistance, washability, environmental protection and sustainability, stability and temperature resistance, and static electricity. Solving these problems requires comprehensive management from multiple links such as raw material selection, production process control, and post-processing.