- Contact：kelvin Xiong
- Cel：0086-18657937325
- Tell：0086-0579-86613023
- Fax：0086-0579-86613023
- E-mail：Kelvin@alnonwoven.com
- Address：Dongkang Road , Liushi Street , Dongyang City, Zhejiang province
Why do I need to stretch when producing spunbond nonwovens? Because the newly formed melt-spun fiber (nascent fiber) has low strength, large elongation, and extremely unstable structure, it does not have the performance required for textile processing, so the spunbond nonwoven fabric must be stretched during the production process.
After stretching, the orientation of macromolecules in the low-order region of the as-spun fiber along the fiber axis increases, along with other structural changes such as density and crystallinity. The increase in the degree of orientation significantly increases the breaking strength of the fiber, the elongation at break decreases, and the wear resistance and fatigue resistance of the spunbond nonwoven fabric also increase significantly.
There are two main ways to draw nascent fibers: roller mechanical drawing and air flow drawing.
In the production of spunbond non-woven fabrics, due to the continuous process of spinning, stretching, laying, and reinforcement, the stretching is required to be completed in a very short time, and it is difficult to adopt roller mechanical stretching. Moreover, while drawing, it is also required to air-cool the fibers to prevent blocking. Therefore, in practical applications, air-stretching or mechanical stretching combined with air-stretching is used for stretching, and roller mechanical stretching is used individually.
Dongyang Laichi Environmental Protection Technology Co., Ltd. is a professional manufacturer of spunbond nonwoven fabrics. Spunbond nonwoven fabrics can be customized according to your needs. Dongyang Laichi manufacturers choose Dongyang Laichi! Welcome new and old customers to negotiate purchases! In addition, Lai Chi also has high-quality elastic non-woven fabrics, medical non-woven fabrics, various non-woven fabrics and other products.
If you want to know more product information, please contact: Mr. Zhu 13706796423 Website: http://m.jiankangwa.com/En_index.html