Graphene Conductive Spunlace Nonwoven Fabric Products

I. Product Foundation: Diverse High-Quality Base Materials, Meeting Conductive Scenario Requirements

 The performance of graphene conductive spunlace nonwoven fabric starts with the precise selection and scientific proportioning of raw materials for the spunlace base material. Our company carefully selects various high-quality fibers such as polyester, viscose, pure cotton, and bamboo fiber, and combines the requirements for the flexibility, strength, and breathability of the base material in different scenarios to create spunlace base materials that are both basic in performance and suitable for conductivity, providing a stable carrier for the subsequent attachment and function of the graphene conductive layer:

Polyester fiber: Endows the base material with excellent tensile strength, tear resistance, and dimensional stability, ensuring that the base material does not deform or break during conductive processing, cutting and forming, and long-term use (such as inner lining of electronic devices); at the same time, it has good chemical resistance and weather resistance, which can resist the erosion of graphene conductive paste and environmental factors, ensuring long-term stable conductivity, suitable for high-durability electronic and industrial scenarios;

Viscose fiber: Has excellent moisture absorption and breathability, which can enhance the adhesion between the base material and the graphene conductive paste, preventing the conductive layer from peeling off. At the same time, its soft and skin-friendly touch makes the product more comfortable in smart wearables and medical skin-contact scenarios, suitable for close-to-skin conductive applications;

Pure cotton fiber: Natural, environmentally friendly, and biocompatible, with no irritation or odor, and a loose and porous fiber structure that can effectively absorb graphene conductive paste, forming a uniform conductive network. After conductive post-treatment, it becomes the preferred base material for scenarios with strict safety requirements such as medical and food testing;

Bamboo fiber: Has good breathability and environmental degradability. At the same time, the natural texture on the fiber surface can enhance the adhesion with the conductive paste, in line with the green and low-carbon development trend. After being combined with the graphene conductive process, it is suitable for high-end smart wearables and environmentally friendly electronics that pursue both naturalness and functionality.

We flexibly adjust the raw material ratio according to customer needs - for durable scenarios such as electronic device inner lining, the proportion of polyester can be increased (such as 60% polyester + 40% viscose), while for smart wearables and medical skin-contact scenarios, viscose / pure cotton / bamboo fiber is mainly used. Each batch of base materials undergoes multi-dimensional testing such as weight (adjustable from 30 to 200g/㎡), thickness, strength, and breathability, with errors controlled within a very small range to ensure stable base material performance and lay a solid foundation for the precise implementation of the graphene conductive post-treatment process.

II. Core Process: "Spunlace Base Material + Graphene Conductive Post-Treatment", Achieving Efficient Conductivity

Our graphene conductive spunlace nonwoven fabric strictly follows the step-by-step process of "first making the spunlace base material, then conducting the graphene conductive post-treatment". According to the characteristics of different base materials and conductive requirements, we use printing and coating as the core processing methods and customize the post-treatment plan. Through refined control, we achieve the triple guarantee of "stable base material + uniform conductive layer + long-lasting performance", ensuring excellent and stable conductive performance of the product:

(1) Pre-treatment of spunlace base material: Enhancing the adhesion of the conductive layer Before the conductive graphene post-treatment, the spunlace substrate is pre-treated specifically to create conditions for the uniform adhesion and long-term retention of the graphene conductive paste:

For substrates with strong moisture absorption such as viscose, pure cotton, and bamboo fiber, low-temperature drying (60-70℃) is used to remove excess surface moisture, avoiding the impact of moisture on the dispersion and adhesion of the conductive paste, and preventing mold growth due to moisture, ensuring a stable environment for conductive processing.

For synthetic fiber substrates such as polyester, plasma surface treatment technology is adopted to slightly activate the surface active groups of the fibers, enhancing the chemical bond strength between the substrate and the graphene conductive paste, reducing the shedding of the conductive layer during subsequent use (such as friction and bending), and extending the conductive lifespan.

(2) Graphene conductive post-treatment: Dual-process of printing / coating, customized conductive solutions

Relying on the customized graphene conductive processing production line, based on the customer's requirements for conductive performance (such as surface resistance value), conductive layer thickness, and pattern accuracy, high-purity graphene conductive slurry (graphene content ≥ 95%) is selected, and two core processing methods, printing and coating, are implemented with differentiated processes to ensure efficient and uniform conductive effects:

Selection of graphene conductive slurry: High-quality, environmentally friendly, and non-toxic graphene conductive paste with good dispersion and excellent conductivity is chosen, meeting international environmental standards such as RoHS and REACH, avoiding heavy metal and volatile organic compound residues, ensuring safe use in electronic and medical scenarios; the slurry concentration can also be adjusted according to customer needs (adjustable from 5% to 20%), to meet different conductive performance requirements.

Core processing methods: Printing method - Precise patterns, efficient conductivity

Suitable for scenarios requiring specific conductive patterns (such as circuit textures, electrode shapes), high-precision screen printing or gravure printing equipment is used to uniformly print the graphene conductive slurry on the spunlace substrate according to the preset patterns:

Pattern accuracy control: Through customized screens (200-400 mesh) or gravure rollers, the precision of the conductive pattern lines can reach 0.1-0.5mm, without broken lines or ink overflow, meeting the requirements of fine circuits in electronic devices;

Printing parameter optimization: Adjust the printing speed (adjustable from 3 to 8m/min) and scraper pressure (0.2-0.5MPa) according to the substrate's moisture absorption, ensuring uniform coverage of the conductive paste on the substrate surface, with the printing thickness (adjustable from 5 to 20μm) error controlled within ±5%, avoiding uneven conductive performance in local areas;

Curing and setting: After printing, low-temperature drying (80-100℃) or infrared curing is used to ensure rapid curing of the graphene conductive paste, forming a stable conductive layer, avoiding damage to the substrate performance due to high temperature, and enhancing the adhesion between the conductive layer and the substrate, with the surface resistance change rate ≤ 10% after 1000 bends.

Core processing methods: Coating method - Full coverage, uniform conductivity

Suitable for scenarios requiring overall conductivity and large-area conductive layers, precision scraper coating equipment is used to uniformly coat the graphene conductive slurry on the spunlace substrate:

Coating uniformity control: By adjusting the scraper gap (adjustable from 5 to 30μm) and substrate transmission speed (2-6m/min), a continuous, bubble-free, and fully coated conductive layer is formed on the substrate surface, with a coverage area of up to 100%, meeting the overall conductivity requirements;

Thickness precise control: Combined with an online thickness detection system, the thickness of the conductive layer is monitored in real time, with an error controlled within ±3%, avoiding fluctuations in conductive performance due to thickness variations. Curing and setting: After the application is completed, a hot air circulation drying process (70-90℃) is adopted to slowly cure the conductive layer, ensuring that the graphene particles are fully dispersed and form a conductive network. After curing, the adhesion of the conductive layer is strong (adhesion reaches grade 1 in the cross-hatch test), and the surface resistance change rate after water washing (for water-washable models) is ≤15%, with stable and long-lasting conductive performance.

III. Product Advantages: Multiple Characteristics Overlaid, Empowering Conductive Applications

With diverse high-quality base materials and "printing / coating" dual-process graphene conductive finishing, our graphene conductive spunlace non-woven fabric has multiple core advantages, which can flexibly adapt to the conductive needs of different fields and provide strong support for the product upgrades of our customers:

Outstanding and stable conductive performance: The surface resistance value can be customized according to requirements (adjustable from 10² to 10⁶ Ω/sq), with strong adaptability to the conductive needs of electronic, medical and other scenarios; at the same time, the conductive performance remains stable for a long time. After being bent 1000 times in the environment from -40℃ to 80℃, the surface resistance change rate is ≤10%, ensuring the normal operation of the product in complex environments.

Flexible and strong process adaptability: With printing and coating as the core, the processing method can be selected according to customer needs - choose the printing method for fine conductive patterns and the coating method for large-area overall conductive. At the same time, with multiple base materials, it realizes "one scene, one process, one base material", meeting the product positioning and usage scenarios of different customers.

Good flexibility and comfort: Relying on the flexibility of the spunlace base material, the product can be freely bent and folded without breaking, suitable for scenarios that require conforming to curved surfaces such as smart wearables and medical skin contact; the skin-friendliness of viscose, cotton, and bamboo fiber base materials ensures no irritation or discomfort when in skin contact.

Safe, environmentally friendly, and compliant: The selected graphene conductive paste and raw materials all comply with national environmental protection and safety standards (such as RoHS, OEKO-TEX® Standard 100), with no release of harmful heavy metals or volatile organic compounds. After skin irritation tests (no redness or itching reactions), it can be safely used in medical and smart wearable skin contact scenarios.

IV. Application Scenarios: Covering Multiple Fields, Empowering Functional Upgrades

Our graphene conductive spunlace non-woven fabric, with the advantages of "diverse base materials + dual-process conductive + excellent performance", has been widely applied in electronics, medical, smart wearables, industrial and other fields, becoming the core support for the functional upgrades of our customers' products and empowering the innovative development of various industries:

Electronics field: Using polyester + viscose base materials, fine conductive patterns are made through the printing method, which can be used as inner linings of electronic devices (such as inner linings of mobile phones and tablet computers), flexible circuit board base materials, and static protection fabrics, with excellent conductivity and durability, ensuring the stable operation of electronic devices and providing static protection.

Medical field: Using all-cotton / viscose base materials, a conductive layer is formed through the coating method, which can be used to make medical conductive patches (such as ECG monitoring patches, physical therapy electrode patches), conductive dressings, etc., with good biocompatibility and skin comfort, effectively conducting biological electrical signals, assisting in medical monitoring and treatment.

Smart wearables field: Using viscose / bamboo fiber base materials, specific conductive textures are made through the printing method, which can be used as inner linings of smart bracelets / watches, conductive layers of smart clothing, health monitoring patches, etc., with good flexibility and skin comfort, accurately conducting signals, suitable for daily wear scenarios.

Industrial field: Using polyester base materials, a large-area conductive layer is formed through the coating method, which can be used to make industrial static elimination fabrics, conductive filter materials, electromagnetic shielding fabrics, etc., with excellent conductivity and weather resistance, effectively eliminating static electricity and shielding electromagnetic interference, ensuring industrial production safety.

V. Brand Commitment: Always Upholding Quality, Mutual Benefit and Win-Win

Since its establishment, Changshu Yongdeli Spunlaced Nonwoven Fabric Co., Ltd. has always regarded "sustainable quality" as the core of its development, integrating it throughout the entire production process of graphene conductive spunlace nonwoven fabric. With professionalism and responsibility, it safeguards the performance and safety of customers' products:

Raw material stage: It strictly selects fiber suppliers and graphene conductive paste suppliers. Each batch of raw materials must provide quality inspection reports and safety certifications. Graphene conductive slurry must also provide third-party conductive performance test reports (including surface resistance and adhesion tests). Only after passing our company's re-inspection (fiber composition, slurry purity, and safety) can they be used, ensuring the safety at the source.

Production stage: It is equipped with a professional quality inspection team and precise testing equipment (such as surface resistance testers, adhesion testers, and thickness testers). It conducts real-time spot checks on key indicators such as base material performance, uniformity of the conductive layer, and conductive performance. Samples of each batch of products are retained for future reference to prevent substandard products from entering the market.

Service stage: It provides customers with a full-process service from "demand communication - base material selection - conductive solution design (such as customizing surface resistance, choosing printing / coating processes) - sample production - batch production - after-sales tracking". If customers have special requirements for conductive performance or process methods, it can quickly optimize process parameters to ensure that the products precisely meet the actual application scenarios.

In the future, we will continue to be guided by "customer needs", deepen the research and development of graphene conductive technology (such as developing processes with higher conductive efficiency and thinner conductive layers), expand the variety of base materials and application scenarios, and strive to become a "reliable quality, flexible customization, professional service" supplier in the field of graphene conductive spunlace nonwoven fabric. We will work hand in hand with customers to achieve the long-term development goal of "sustainable cooperation and mutual benefit", and jointly promote the innovation and upgrading of the functional spunlace nonwoven fabric industry.