Laminated Spunlace Nonwoven Fabric Products

Diverse substrate combinations, laying a solid foundation for product performance

The outstanding performance of laminated spunlace nonwoven fabric stems from the scientific selection and precise adaptation of water-stitching fabric substrates and membrane materials. Yongdeli adheres to the principle of "scene adaptation + performance complementarity", selects high-quality raw materials such as polyester, viscose, cotton, and bamboo fiber to make spunlace base fabrics, and combines them with diverse membrane material particles such as PE, TPU, PU, PET, and PTFE. Through the laminating process, a multi-dimensional performance combination is formed, precisely matching the needs of different industries:

The flexible combination of spunlace fabric and membrane materials enables Yongdeli's laminated spunlace nonwoven fabric to retain the flexible and skin-friendly characteristics of spunlace fabric while leveraging the membrane material to achieve specialized functions such as waterproofing, barrier, and wear resistance, forming a "1 + 1 > 2" composite advantage.

- Characteristics of spunlace fabric base materials: Polyester base material provides excellent strength and wear resistance; viscose base material improves moisture absorption and breathability; cotton base material has natural skin-friendly and non-irritating advantages; bamboo fiber base material has natural antibacterial properties, which can be flexibly selected according to the scene requirements.

- Advantages of membrane material particles: PE particles have high cost performance and form a basic waterproof and moisture-proof layer after laminating; TPU/PU particles have strong flexibility and the product has both waterproof and elasticity after laminating; PET particles have outstanding high-temperature resistance, suitable for industrial high-temperature scenarios; PTFE particles have efficient breathable and waterproof characteristics, and are the core choice for high-end protection scenarios.

Core competitive advantages, unique laminating process

Yongdeli's laminated spunlace nonwoven fabric relies on high-quality substrate combinations and advanced laminating process, not only having basic advantages, but also highlighting unique value in comparison with the laminating process, forming five core competitiveness:

- Superior bonding strength and outstanding weather resistance: Using the high-temperature extrusion laminating process, membrane material particles are deeply penetrated and fused with water-stitching fabric fibers after high-temperature melting, forming an "fiber-membrane" interwoven structure. The peel strength can reach 6N/3cm or more, far exceeding the laminating process (5N/3cm). After repeated kneading, stretching, and high-temperature cycle tests, there is no delamination, and stability is better in humid and high-temperature environments.

1. More uniform membrane layer, strong thickness control: The laminating process precisely controls the membrane material flow and thickness through the laminating nozzle. The membrane layer thickness error can be controlled within ±0.01mm, and the surface flatness is far superior to the laminating process (relying on the uniformity of the pre-made membrane thickness). Customized membrane thickness from 0.01 to 0.1mm can be achieved, ranging from breathable micro-membranes to wear-resistant thick membranes, suitable for more precise scenarios.

2. No glue, more environmentally friendly and safer, suitable for strict scenarios: The laminating process does not require additional use of glue, directly combining the membrane material particles with the fabric through high-temperature melting, completely avoiding the problems of formaldehyde and odor that may be brought by the glue in the laminating process. The product can easily pass FDA food-grade certification and medical-grade biocompatibility tests, safely adapting to food contact, baby products, and medical protection scenarios. 3. Higher production efficiency and more cost advantages: The laminating process adopts an integrated "particle-melting-flowing" procedure, eliminating the need for pre-made film materials and gluing steps. The production speed is over 30% higher than that of the coating process, and it also eliminates the costs of film material pre-treatment and glue procurement. In large-scale production, it can reduce the unit cost by 15%-20%, providing customers with cost-effective solutions.

4. Broader process adaptability and more flexible shape processing: The product film layer after laminating is fully integrated with the fabric material, without the "film-fabric boundary" limitation of the coating process. It can achieve curved surface laminating, local laminating, and other shape processing, more suitable for complex-shaped product requirements. At the same time, the product retains the flexible characteristics of the spunlace fabric, which can be easily folded, cut, and heat-sealed, with processing performance far exceeding that of the coated products.

5. Strong environmental adaptability and stable performance: The membrane structure formed by high-temperature fusion has a wider temperature range for high and low temperatures, capable of stable use in the -50℃ to 150℃ environment. Compared to coated products (-40℃ to 120℃), its applicable temperature range is larger. Moreover, it has better aging resistance and chemical corrosion resistance, with a lifespan that is over 60% longer than that of coated products.

High-temperature flow-laminating process, controlling the core quality control

Yongdeli has established a full-process standardized production system of "substrate pre-treatment + high-temperature laminating + cooling and shaping + precise detection"， especially in the laminating process， forming a core technical advantage， ensuring a firm and stable bond between the film and the fabric material：

1. The first step： Precise substrate pre-treatment： Select corresponding spunlace fabric substrates (such as cotton for food packaging， polyester for industrial protection) and film material particles (such as PE for waterproofing， PTFE for waterproof and breathable) according to product functional requirements； Clean and dry the spunlace fabric to ensure a moisture content of less than 5%， avoiding air bubbles during laminating； Screen and remove impurities from the film material particles to ensure the purity of the film layer.

2. The second step： High-temperature flow-laminating (core process)： Use an automated high-precision laminating machine to put the film material particles into the feed barrel， melt them to a molten state at 180-280℃； Control the flow rate of the molten film material through a precise metering pump， and evenly flow it onto the surface of the uniformly moving spunlace fabric through a laminating nozzle； At the same time， press the film material with rollers to assist in fusion， ensuring that the molten film material fully penetrates and interweaves with the fibers of the spunlace fabric， with the film layer thickness precisely controlled within the preset range (0.01-0.1mm).

3. The third step： Cooling and shaping， and post-processing： The laminated product immediately enters the cold roller cooling zone， rapidly stabilizing the film structure in a 10-20℃ environment； Then， it undergoes hot air drying to remove residual moisture on the surface， and is cut and wound according to customer requirements， processed into different widths (1m-3.2m) of finished products. In some scenarios， press-in， printing， and other post-processing can be completed simultaneously.

4. The fourth step： Full-dimensional quality inspection： Establish a "three-dimensional quality inspection system" - combining peel strength test (using a peel strength tester to ensure ≥6N/3cm)， film layer performance inspection (thickness uniformity， waterproofness， breathability， etc. special tests)， and appearance quality inspection (checking for bubbles， pinholes， uneven film layer defects)， eliminating substandard products， ensuring a 100% qualified rate of the factory products.

Diverse application fields， empowering industry upgrades

With the core advantages of "firm bonding， environmentally friendly and safe， cost optimization"， combined with the unique value of the laminating process， Yongdeli laminated spunlace nonwoven fabric has been widely applied in packaging， medical， home， industrial， and infant care industries， providing customized solutions for each industry：

1. Food packaging industry： Select full-cotton/viscose spunlace fabric + PE laminating， the non-greasy and environmentally friendly characteristics comply with food-grade standards， the film layer is uniform and can effectively prevent oxygen and moisture， suitable for packaging of bread， cooked food， snacks， etc. Compared to laminated products, the cost is reduced by more than 15%, and the heat sealing performance is better, making it easier to batch-seal.

2. Medical protection industry: Using adhesive/cellulose fiber needling fabric + PTFE lamination, the non-adhesive design avoids skin irritation. The membrane fabric is closely fused and can block body fluids and bacteria, while maintaining breathable performance. It can be used to make medical protective clothing inner layers， disposable surgical pads， etc.； it has passed medical-grade testing and its safety is far superior to laminated similar products.

3. Baby and mother products industry： Selecting all-cotton needling fabric + TPU lamination， it is natural and skin-friendly with no chemical residues. It has both waterproof and elasticity， and can be used to make baby bibs， waterproof aprons， outer layers of diapers， etc.； the membrane layer is thin and uniform， without the "stiffness" of laminated products， and improves the comfort of infants when wearing.

4. Industrial protection industry： Using polyester needling fabric + PET lamination， it is resistant to high temperatures (150℃) and combines firmly. It can be used to make industrial high-temperature protective aprons， equipment dust covers， welding protection fabrics， etc.； in high-temperature working environments， its performance is stable， and the service life is more than twice that of laminated products.

5. Home living industry： Selecting bamboo fiber/100% cotton needling fabric + PE/TPU lamination， it is made into waterproof tablecloths， sofa covers， bathroom floor mats， etc. It is non-adhesive， environmentally friendly， and easy to clean. The membrane layer is uniform and does not wrinkle easily； compared to laminated products， it can achieve a thinner membrane layer design， balancing waterproof and breathable properties.

Yongdeli Spunlaced Nonwoven Fabric Co.， Ltd. has always been committed to the research and production of lamination needling nonwoven fabrics， with "quality as the foundation， innovation as the soul". In the future， the company will continuously optimize lamination process parameters and expand more base materials and membrane material combinations to provide customers with more cost-effective and targeted lamination needling nonwoven fabric solutions， and jointly build a path to high-quality development！