Spandex Elastic Spunlace Nonwoven Fabric

Diverse high-quality base materials, laying a solid foundation for elastic applications

 The comprehensive performance of spandex elastic spunlace nonwoven fabric starts with the scientific selection of base materials. Yongdeli, based on the core needs of medical self-adhesive bandages, adheres to the principle of "safe compatibility + performance complementarity", and selects high-quality raw materials such as polyester, viscose, Tencel, silk, bamboo fiber, and pure cotton to make spunlace base materials. The characteristics of each base material and the elasticity of spandex form an efficient synergy, precisely meeting the requirements of medical scenarios:

The flexible choice of diverse base materials enables Yongdeli's spandex elastic spunlace nonwoven fabric to not only meet the core elasticity requirements of medical self-adhesive bandages but also take into account additional properties such as skin-friendliness, breathability, and antibacterial properties, providing comprehensive protection for medical scenarios:

- Polyester: It has excellent strength and dimensional stability. The base fabric made from it is wear-resistant and resistant to tensile deformation. After being sewn with spandex threads, it can enhance the product's elastic recovery rate, suitable for the repeated stretching use of medical bandages.

- Viscose/Tencel/Silk: They have outstanding skin-friendliness and breathability. Tencel and silk also have a delicate and soft texture. The elastic nonwoven fabric made from them has high comfort when adhering to the human skin, reducing the discomfort caused by wearing the bandage for a long time.

- Bamboo fiber/Pure cotton: They are natural and environmentally friendly and have good moisture absorption and breathability. Bamboo fiber also has natural antibacterial properties. When combined with spandex elasticity, it can reduce the risk of wound infection, meeting the high hygiene and safety requirements of medical self-adhesive bandages.

Core characteristic advantages, meeting medical scenario requirements

Yongdeli's spandex elastic spunlace nonwoven fabric integrates the basic advantages of spunlace technology with the elasticity of spandex, forming four core competitive advantages for medical self-adhesive bandage scenarios, fully meeting clinical usage requirements:

- Excellent and stable elasticity, with better adhesion: Using high-quality spandex as the core elastic material, the product's longitudinal elastic elongation can reach 150%-250%, and the lateral elastic elongation can reach 100%-200%, with an elastic recovery rate exceeding 95%. After repeated stretching, it is less likely to become loose or deformed. This excellent elastic performance enables the bandage to closely adhere to the curves of the human limbs and joints, avoiding displacement due to movement and ensuring the stability of the bandage.

- Adjustable elasticity to meet diverse needs: The elasticity of the product can be precisely controlled by adjusting the specifications, sewing density, and arrangement of spandex threads according to different usage parts of medical self-adhesive bandages (such as fingers, arms, legs). For example, for bandages on fine parts like fingers, low-elastic spandex and high-density sewing are used; for large areas like arms, high-elastic spandex and reasonable spacing sewing are used, achieving a customized elastic solution that fits the part.

- Firm sewing without detachment, excellent durability: Through a dedicated precision sewing process, spandex threads are deeply integrated with the spunlace base fabric. The sewing lines are uniform and fine, and the combination strength between spandex and the base fabric is high. After 50 times of stretching and friction tests, there is no loosening or detachment of spandex threads. At the same time, the base fabric is treated with spunlace consolidation technology, with tightly entangled fibers, resistant to tearing and damage, capable of withstanding the external force during the bandaging process. 3. Safe, skin-friendly and non-irritating, meeting medical standards: All raw materials used (including spandex filaments and base fabric materials) have passed medical-grade safety tests, free of formaldehyde, odor, and irritating chemical additives. The skin irritation test has reached a 0-level standard, allowing direct contact with the skin around the wound. The natural antibacterial and moisture-absorbing properties of some base materials (such as bamboo fiber and pure cotton) can further enhance the hygiene and protective performance of the bandage.

4. Compatible with self-adhesive technology and excellent processability: The product surface has high flatness and can be perfectly combined with the self-adhesive layer after special surface treatment, without issues such as adhesive layer detachment or wrinkling. At the same time, the product has uniform weight (customizable from 20g/㎡ to 100g/㎡), good cutting performance, and can be precisely cut according to the bandage specifications, meeting the requirements of large-scale production and processing.

Precision production process, ensuring medical-grade quality

Yongdeli has established a full-process standardized production system of "base fabric preparation + spandex filament sewing + medical-grade testing", especially forming a core technical advantage in the spandex filament sewing process, ensuring that the product meets the strict quality requirements of medical self-adhesive bandages:

1. Step 1: Medical-grade base fabric preparation: Select the corresponding base material (such as pure cotton for skin-friendliness and bamboo fiber for antibacterial properties) based on the usage requirements of medical self-adhesive bandages. After pre-treatment such as sorting, decontamination, opening, and mixing, a uniform fiber web is formed through a high-speed precision carding machine. Then, through multiple high-pressure spunlace consolidation processes, the fibers are entangled to produce a uniform, strong, and smooth spunlace non-woven base fabric.

2. Step 2: Precision spandex filament sewing (core process): Use high-quality medical-grade spandex filaments. According to the preset elasticity requirements, determine the spandex filament specifications (such as 20D, 30D, 40D) and sewing parameters. Through automated precision sewing equipment, the spandex filaments are sewn onto the spunlace base fabric in a "cross" or "parallel" arrangement. The sewing density can be precisely controlled (10-50 stitches per centimeter) to ensure uniform elasticity distribution. During the sewing process, the flatness of the stitches and the tension of the spandex filaments are monitored in real time to avoid issues such as stitch skew and uneven spandex filament tension. After sewing, a heat setting process is applied to enhance the firmness of the spandex filaments and the base fabric, ensuring stable elasticity.

3. Step 3: Medical-grade specialized testing: Establish a "triple medical-grade testing standard" to guarantee quality - safety performance testing (formaldehyde content, odor, skin irritation, microbial indicators, etc.), physical performance testing (elasticity elongation, elasticity recovery rate, tear strength, sewing firmness, etc.), and processing performance testing (surface flatness, weight uniformity, adhesion to the self-adhesive layer, etc.). All tests comply with medical-related standards such as GB/T 19083-2010. Non-conforming products are strictly eliminated to ensure a 100% qualified rate of products leaving the factory.

Focusing on core applications, empowering the medical bandage field

With the core advantages of "excellent elasticity + skin-friendly + stable and durable", Yongdeli spandex filament elastic spunlace non-woven fabric has become the core material for medical self-adhesive bandages. Based on different medical scenario requirements, multiple compatible products have been developed, providing efficient solutions for clinical bandaging:

1. Conventional medical self-adhesive bandages: Made by sewing medium-elastic spandex filaments onto pure cotton or viscose base materials, these self-adhesive bandages are skin-friendly, breathable, and have moderate elasticity. They are suitable for bandaging and fixation of common wounds, abrasions, sprains, etc. The excellent elasticity ensures that the bandage conforms to the body's curves without affecting blood circulation, and the moisture-absorbing material keeps the wound dry, reducing the risk of infection.

2. Self-adhesive bandages for joint areas: Made by sewing high-elastic spandex filaments onto polyester base materials, the elastic elongation rate can reach 250%, with high elasticity recovery. They are suitable for bandaging frequently moving joints such as the knee, elbow, and wrist. Even when the joints are moved significantly, the bandage can remain closely attached without shifting, and it also has excellent wear resistance, extending its service life.

3. Medical self-adhesive bandage for children: Made from bamboo fiber or silk base material and low-elasticity spandex thread, it is soft, fine, and non-irritating, with moderate elasticity and no tightness, suitable for children's delicate skin and high activity level. The natural antibacterial property of bamboo fiber can further enhance the safety of use and prevent wound infection in children; meanwhile, the product can be designed in various colors to increase children's acceptance.

4. Self-adhesive bandage for postoperative rehabilitation: Made from Tencel base material and controllable-elasticity spandex thread, Tencel material has excellent biocompatibility and breathability, which can reduce the stuffiness around the postoperative wound. The controllable elasticity design can adjust the tightness of the bandage according to the rehabilitation stage, ensuring the stability of wound fixation while providing a suitable environment for wound healing, facilitating postoperative recovery.

5. Self-adhesive bandage for sports protection: Made from polyester base material and high-elasticity spandex thread, it has high strength and wear resistance, suitable for scenarios such as muscle strain and joint protection during sports. Its excellent elasticity can provide effective support to muscles and joints, and it also has good breathability to avoid the discomfort of stuffiness caused by sweating during sports, balancing protection and comfort.

Changshu Yongdeli Spunlaced Nonwoven Fabric Co., Ltd. always adheres to the principle of "medical safety as the core and quality innovation as the driving force", and is deeply engaged in the research and development and production of spandex thread elastic spunlace nonwoven fabric. In the future, the company will continue to focus on the upgrading of medical field demands, optimize the elastic control process and medical-grade safety performance, provide better base material solutions for medical self-adhesive bandages and more medical protective products, and work together with medical industry partners to build a solid safety protection line!