Super Waterproof Spunlace Nonwoven Fabrics

Diverse high-quality raw materials lay the foundation for super waterproof performance

The selection of raw materials is the core prerequisite for determining the waterproof performance and comprehensive quality of the product. Yongdeli always adheres to the concept of "quality controlled from the source", and selects various high-quality base materials such as polyester, viscose, cotton, and bamboo fiber for the super waterproof spunlace nonwoven fabric. It can be flexibly combined according to different application scenarios' waterproof grades and additional requirements. The characteristics of each base material and the waterproof function form an efficient complement:

- Polyester: As one of the core base materials, it has excellent hydrophobicity, laying the foundation for the product's waterproof performance, and at the same time, giving the product excellent strength and wear resistance, ensuring that it is not prone to damage in damp and complex usage environments and prolongs the service life;

- Viscose: Improves the product's moisture absorption and breathability, ingeniously balancing waterproof performance and usage comfort, avoiding the "stuffy" problem commonly seen in waterproof materials, making the product more suitable for scenarios that need to balance waterproof and breathable;

- Cotton: Has natural skin-friendly and non-irritating properties, suitable for fields with extremely high requirements for material safety;

- Bamboo fiber: Comes with natural antibacterial and antifungal properties, combined with the super waterproof function, can effectively prevent the growth of bacteria brought by moisture, further strengthening the product's hygiene protection performance, suitable for special scenarios such as hygiene care.

The scientific combination and precise proportion of diverse base materials enable Yongdeli's super waterproof spunlace nonwoven fabric to guarantee ultimate waterproof performance while also having multiple advantages such as breathability, strength, and antibacterial properties, and can flexibly adapt to the personalized needs of multiple industries.

Core characteristics advantages, creating super waterproof strength

Yongdeli's super waterproof spunlace nonwoven fabric retains the softness and strength advantages of traditional water-stitching nonwoven fabric and, through innovative waterproof technology modification, forms four characteristic advantages centered on "super waterproof", fully meeting the usage requirements of high-demand scenarios:

1. Ultimate waterproof performance, more thorough blocking: The product undergoes special waterproof coating and fiber modification double-process treatment, with waterproof grades reaching IPX7 level. It can be immersed in 1-meter-deep water for 30 minutes without leaking, with a surface contact angle greater than 135°, achieving the effect of "no water droplets on the surface". Moreover, the waterproof performance is extremely stable, remaining above IPX6 level after 50 washes or 1,000 friction times, completely solving the pain point of traditional waterproof nonwoven fabrics' "short waterproof duration and easy failure", suitable for long-term use scenarios with strict waterproof requirements.

2. Waterproof and breathable in balance, more comfortable to use: Breaking through the industry bottleneck of "waterproof must be stuffy", it adopts breathable waterproof coating materials and precise perforation technology, ensuring the super waterproof while maintaining a high level of breathability, reaching over 800g/㎡·24h. It effectively discharges internal moisture, avoiding a stuffy feeling. The material is strengthened by spunlace technology, soft and skin-friendly, without a harsh feeling, and can be directly used on the human skin, suitable for scenarios such as wearing and care.

3. Durable and robust, adaptable to complex scenarios: Integrating the need for spunlace bonding technology and waterproof reinforcement treatment, the fibers are tightly intertwined, with a tensile strength that is over 40% higher than that of ordinary waterproof non-woven fabrics, and a tear strength that is over 35% higher. It is resistant to repeated folding, rubbing and wear, and is less likely to have coating peeling or fiber damage. It also has excellent acid and alkali resistance and aging resistance, and can be used stably within the temperature range of -20℃ to 80℃, suitable for outdoor and industrial complex environments.

4. High degree of customization, flexible to meet requirements: Products can be customized for waterproof grade (IPX5-IPX8), weight (30g/㎡ - 200g/㎡), width (0.1m - 3.4m), color and surface texture, etc. based on customer needs. It also supports adjustment of base material ratios, such as enhancing aging resistance for outdoor scenarios, and improving antibacterial and biocompatibility for medical scenarios, achieving "one need, one solution" customized services.

Advanced production processes, strict control of waterproof quality checkpoints

Yongdeli has established a full-process standardized production system from raw material pre-treatment to finished product waterproof performance testing. With refined process control and innovative waterproof technologies, each batch of super waterproof spunlace non-woven fabric ensures consistent waterproof performance:

1. Raw material pre-treatment stage: Sorting, decontaminating and loosening the base materials such as polyester and viscose, removing impurities and defects; for polyester base materials, performing hydrophobic pre-treatment to enhance the bonding degree with the waterproof coating; then precisely measuring the fiber ratios according to the formula, with an error control within ±1%, ensuring uniform mixing.

2. Combing and weaving stage: Using high-speed precision combing machines, the mixed fibers are combed into continuous and uniform fiber nets, with a thickness deviation controlled within ±2%, laying the foundation for the uniform coverage of the waterproof coating in the subsequent process.

3. Core waterproof modification stage: Using the "double-sided precise coating/double-sided impregnation and drying + high-temperature curing" process, selecting environmentally friendly polytetrafluoroethylene waterproof coating materials, using automated coating equipment to evenly apply the coating on both sides of the fiber net, ensuring no missed coating or thin coating areas; or using the impregnation and drying equipment to evenly soak and penetrate the waterproof agent into the gaps of the non-woven fabric, ensuring no missed soaking areas; then entering the high-temperature curing oven, precisely curing at 140-180℃, making the waterproof coating closely bond with the fibers, forming a stable waterproof membrane structure.

4. Spunlace bonding and strengthening stage: After waterproof pre-treatment of the fiber net, it enters multiple high-pressure spunlace processes, spraying and solidifying at different pressure gradients, making the fibers and waterproof coating further intertwine and fuse, enhancing the product strength and adhesion of the waterproof coating; after spunlace treatment, it undergoes vacuum dehydration and low-temperature drying, strictly controlling the product moisture content below 8%, avoiding affecting the waterproof performance.

5. Special waterproof testing stage: Establishing "three-level waterproof testing" standards, including static water pressure test, spray test, and waterproof test after friction, with professional waterproof testing equipment for batch testing, ensuring that the product waterproof grade meets the standards; at the same time, testing additional indicators such as air permeability and tensile strength, eliminating failed products， ensuring a 100% qualified rate of factory products.

Wide application in multiple fields， enabling upgrade of waterproof scenarios

With the comprehensive advantages of "super waterproof + strong and breathable + environmentally friendly and safe"， Yongdeli super waterproof spunlace non-woven fabric has been widely used in outdoor， medical， household， packaging， industrial and other industries， providing efficient solutions for waterproof scenarios in various fields：

1. Outdoor products industry： Used as the fabric base or inner lining for outdoor tents， hiking clothes， climbing bags， picnic mats， etc.， the super waterproof performance can effectively prevent rain invasion， while the breathable design avoids internal heat， and the strong and durable characteristics can withstand outdoor complex environmental wear and tear； 2. Healthcare industry: Producing medical surgical gowns, isolation suits, disposable mattresses, wound dressing outer layers, etc. The IPX7 level waterproof property can effectively prevent blood and body fluids from penetrating, reducing the risk of cross-infection, and at the same time, it is breathable and skin-friendly, enhancing the comfort of both medical staff and patients;

3. Home living industry: As the core material for waterproof tablecloths, sofa covers, mattress protection covers, bathroom anti-slip mats, etc., it is water-resistant and easy to clean. At the same time, its breathable performance prevents furniture from getting moldy due to dampness, balancing practicality and durability;

4. Packaging and transportation industry: Used as packaging protection materials for electronic products, precision instruments, hardware accessories, etc., super waterproof can isolate moisture and water stains during transportation, avoiding product moisture damage; the strong texture can cushion collisions and provide dual protection for the products;

5. Industrial protection industry: Producing workshop waterproof aprons, protective glove linings, equipment dust-proof and waterproof covers, etc. The waterproof performance can prevent industrial sewage and chemical liquids from splashing, and the wear-resistant and acid-base-resistant properties are suitable for complex industrial operations, ensuring the safety of operators and equipment.

Changshu Yongdeli Spunlaced Nonwoven Fabric Co., Ltd. has always been committed to "quality as the foundation, innovation as the soul", and is dedicated to empowering the waterproof needs of various industries through high-quality products such as super waterproof spunlace nonwoven fabrics. In the future, the company will continue to deepen the research and development of waterproof processes, expand products with higher waterproof grades and more application scenarios, and provide customers with more valuable nonwoven fabric solutions, jointly building a high-quality waterproof protection path.