Why does the glass yarn become soft and hard during use?

Friends who know glass yarn may know that there are many styles of glass yarn on the market now, but in summary, it can be found that the softness and hardness of Fiber Glass are different. Many people think that the difference in softness and hardness is due to quality. Whether it is good or bad depends on it. In fact, many people now have a wrong view. The difference in softness and hardness of glass yarn is mainly determined by the amount of glue applied.

During the production process of the glass yarn, if the glue is applied differently in early summer, the produced glass yarn will be soft and hard. This has nothing to do with the quality. Therefore, we should not judge the Fiber Glass based on its softness or hardness. Make a choice, but it is worth mentioning that when choosing glass yarn, you must choose products that are of good quality and trustworthy. Do not affect the normal effect of the glass yarn because of temporary cheapness.
1. Tensile strength test
Take three 10-meter 150g glass yarn samples, then place them horizontally on the tensile testing machine, turn on the testing machine, record the value, put the sample on the tensile testing machine vertically, turn on the machine, record the values, the horizontal and vertical pulling force is not less than 1080N , 840N, indicating that the tensile strength of the output meets the requirements.
2. Appearance requirements
Visually check that the surface of the glass yarn is free of defects and contamination to ensure it is clean and tidy.
3. Weight detection
Take a 20-meter sample and weigh it for testing to see if the sample meets the weight requirements. If it does, it means the product is qualified.