By NASK
NASK nanofiber membranes transform ordinary fabrics into multi-functional textiles — blocking liquid water under pressure while letting perspiration escape freely, with antibacterial, thermal, and anti-odor properties built into the fiber itself. NASK nanofiber technology transforms ordinary fabrics into high‑performance functional textiles. By incorporating advanced functional additives into the nanofiber structure, we achieve: Enhance the water proof function on the textile without compromise on breathability - The nanofiber offer a high density layer of nanofiber, which capable to block the water under pressure. And due to it high porosity, only water vapor can pass through and the layer will effectively block the water droplet Anti-Bacterial Functionality - We functionalize nanofiber with our cutting-edge formulation, making nanofiber attract bacterial and inhibit growth. The high surface to volume ratio nanofiber maximizes contact with bacteria, achieving high efficiency of antibacterial function Thermal regulation - Integrated phase-change materials (PCMs) in our nanofibers enable dynamic temperature control. These materials absorb, store, and release thermal energy, buffering the wearer against temperature fluctuations for enhanced comfort. Odor control - Inhibit bacteria that cause odors, and hence keep products smelling fresher for longer Enhance durability - Extend the life of textiles by reducing the need for frequent washing and preventing microbial degradation Distinctive Properties of NASK’s Nanofibers Features: - Superb breathability - Waterproof (Waterproofness of NASK’s Nanofibrous Fabric Can Be Customized) - Wettability of NASK’s Nanofibrous Fabric Can Be Customized - Versatility of nanofibers allows the realization of multi-functional fabric materials - NASK’s Nanofibrous Fabric Can Be Laminated with Conventional Protective Layers Additional Optional Features: - Phase 1: Antibacterial - Phase 2: Anti-odor - Phase 3: Far Infrared Emission - Phase 4: Self cooling - Possibility to embed different chemical ingredients (i.e. PCM) in nanofiber level Five features: - Small pore size: Effectively block water droplets while allowing water vapor molecules to pass throughh - Hydrophobic material: Effectively repel water droplet and prevent water penetration - High porosity: Allow water vapor molecules to pass through the membrane efficiently. - High specific surface area: Allow extra functions such as killing bacteria on the spot - PFAS-free: Environmental-friendly Dual-Mode Breathability - Physical + Chemical transfer. - Physical mode: Water vapor molecules pass directly through nanofiber pores. - Chemical mode: Vapor transferred by physicochemical process across the fiber surface. NASK vs Commercial Fabrics - 25% more breathable than the best in market. Water Vapor Transmission Rate measured at equivalent water-pressure resistance. NASK's 200 nm nanofibers block a 10 µm water droplet while letting molecular-scale vapor pass through. VERSATILE APPLICATIONS: Functional apparels, Medical textiles, Cleanroom, Manufacturing
Two-stage Engineered Filtration High porosity High specific surface area Our nanofibers achieve an exceptional filtration-to-resistance ratio (high Quality Factor) through a synergy of advanced morphological engineering and surface chemistry. The Slip-Flow Effect (High Efficiency + Low Pressure Drop): Traditional mechanical filters rely on thick fiber networks that obstruct airflow, creating high pressure drop. Our nanofibers are engineered with diameters below 100 nm. At this scale, air molecules exhibit "slip-flow" behavior—literally slipping around the fiber surfaces with minimal friction. This allows air to pass through with drastically reduced resistance (low pressure drop), while sub-micron particles, viruses, and PM2.5 are effortlessly intercepted via diffusion and interception mechanisms. Next-Gen Antimicrobial Action (Silver-Free): Instead of utilizing traditional silver nanoparticles—which suffer from leaching risks, oxidation, and high regulatory hurdles—our nanofibers exploit inherent surface-charge properties and bio-compatible polymeric matrices. This achieves an exceptional antimicrobial and antiviral rate on contact through physical disruption of microbial cell membranes, eliminating pathogens safely without chemical shedding. Continuous VOC Decomposition via Nano-Catalysis: Rather than merely trapping Volatile Organic Compounds (VOCs) like activated carbon—which quickly saturates and re-emits toxins—our nanofibers are integrated with highly active nano-catalysts. These catalysts continuously break down harmful gases (such as formaldehyde, benzene, and TVOCs) into harmless water and carbon dioxide molecules at room temperature, ensuring a permanent purification cycle. Extended Operational Lifespan: Our high surface-area-to-volume ratio enables depth-filtration characteristics on a microscopic scale. Dust cake formation is optimized on the membrane surface, preventing deep pore-clogging and extending the operational life of the filter element up to 3 times longer than traditional electret or fiberglass media.
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NASK NANO regulates skin pH, kills bacteria, delivers active ingredients without preservatives, and cuts disposable material consumption by a third. Premium features empowered by NASK NANO fiber Maintain skin health and eliminate odors: NASK NANO can act as catalyst, decomposing urea and ammonia — the major odor sources — while maintaining a healthy skin pH of 5.5. Regulating Skin pH: Increasing acidity helps kill bacteria. • Continuous exposure to urine and excreta causes the skin’s alkalinity to increase, which will lead to: • Microorganisms settling in new areas • Activation of proteases and lipases in the excreta • Damage to the skin’s stratum corneum Antibacterial: NASK Nano nanofibers have a kill rate of over 99% against Escherichia coli and Candida albicans. Existing antibacterial diaper products on the market can only inhibit bacteria growth but do not achieve bacterial killing. NASK NANO antibacterial nanofibers have been successfully applied in medical respirators. Suitable for sensitive skin: NASK Nano nanofiber top sheet has passed dermatological testing and is suitable for sensitive skin, proving the safety of its skincare components. Skin-calming ingredient delivery: Mechanical interlocking traps actives in the top sheet — preservative-free, with controlled release. Breathability & comfort: Effective water-vapor transfer via dual physical and physicochemical pathways — without compromising waterproofness. 33% material savings: Nanofiber enhancement layer redistributes liquid, fully utilizing SAP — saving costly, non-recyclable material. Feature summary of NASK NANO fiber - Rapid liquid relocation function - Multiple hydrophilic channels - Regulate skin pH - Kill bacteria and fungi - Deliver skin calming ingredients - Lighter, thinner due to the use of less SAP and fluff pulp - More breathable due to the effective water vapor transfer property - Odor removal Versatile applications: Disposable back sheet; Disposable diaper top sheet; Disposable sanitary pad top sheet; Cosmetic masks
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Traditional Membrane VS NASK NANO Membrane Pore size range: Traditional Membrane 0.1 – 10 µm; NASK Nano 0.1 – 1 µm — NASK Nano: Efficiently retains micron-sized particles, and even some viruses (by further reducing pore size through surface modification). Traditional membrane: Multiple layers are required to achieve similar precision, resulting in increased membrane thickness and reduced flux. Porosity: Traditional Membrane 30 – 50%; NASK Nano 80% above — NASK Nano: Features high porosity and a three-dimensional interconnected pore network, resulting in low water flow resistance. Traditional membrane: Relies on a dense structure to achieve small pore size, resulting in high water flow resistance. Operation Pressure: Traditional Membrane 1.0 – 3.0 bar; NASK Nano 0.1 – 0.5 bar — NASK Nano: High flux can be achieved even under low pressure (0.1–0.5 bar)—for example, at 0.2 bar, the flux can reach twice that of conventional membranes—with an estimated 30–50% reduction in energy consumption. Traditional membrane: Requires higher driving pressure (e.g. 1.0–3.0 bar), resulting in high pumping energy consumption. Contamination Resistance: Traditional Membrane Low; NASK Nano High — NASK Nano: Hydrophilic treatment can reduce organic matter adsorption, and during long-term operation, the fouling rate is estimated to be 40% lower than that of conventional membranes. Traditional membrane: Surface modification is challenging and may compromise mechanical strength. Cleaning energy consumption: Traditional Membrane High; NASK Nano Low — NASK Nano: The surface is smooth and antibacterial, making it difficult for contaminants to adhere, thereby reducing the frequency of backwashing and the use of chemical cleaning agents. Traditional membrane: Prone to forming irreversible fouling (e.g. organic contaminants seeping into membrane pores), requiring frequent chemical cleaning, which increases energy consumption and shortens membrane lifespan. Stability: Traditional Membrane Low; NASK Nano High — NASK Nano: Flux remains stable over the long term. Traditional membrane: Flux decreases rapidly with fouling. Sustainability: Traditional Membrane Low; NASK Nano High — NASK Nano: biodegradable, environmentally friendly. Traditional membrane: Uses petroleum-based membrane materials, which harm the environment.
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Intended Use - Feminine hygiene products’ (FHP) nanofiber topsheet for use in panty liners, sanitary napkins and period pants - Germ-killing for FHP users suffering from vaginitis - Single-use disposable Features - Nanofibers distribute menstrual fluid and vaginal discharge effectively to achieve swift absorption and zero rewet, keeping the skin dry and comfort - Topsheet possess hemolytic property, allows breakdown of viscous fluid, which accelerates the absorption - Patented germ-killing technology kills 99% germs (including Escherichia coli and Candida albicans), drastically minimizing the chance of vaginal, urinary tract and skin infections - Releasing ingredients that regulate skin pH for inhibition of the growth of bacteria and fungi - Releasing skincare plant extracts that have been widely used to relieve vaginal irritation, itching and odors Appearance - White color Standards - Topsheet for disposal sanitary products (GB/T 30133-2022) - No skin allergy (GB 15979-2002) - Antibacterial (AATCC 100-2019) - pH regulation (GB/T 30133-2022) Performance and Properties - Man-made fiber topsheet - Hydrophilic nonwoven with hemolytic property - Liquid strike through time (GB/T 28214.8-2010 & GB/T 28214.13-2010) - Single strike through ≤3s - 1st ≤2 s; 2nd ≤3 s; 3rd ≤5s - Rewet ≤2.0 g (GB/T 28214.14-2010) - Machine direction breaking force ≥10N/25mm (ASTM D5035-95) - Machine direction elongation ≥30% (ASTM D5035-95) - Cross direction breaking force ≥2N/25mm (ASTM D5035-95) - Cross direction elongation ≥30% (ASTM D5035-95) - Basis weight: 22 gsm ± 2 gsm Storage Conditions - Store nonwoven in an enclosed environment of 10-40°C and RH ≤75% - Do not expose nonwoven to direct sunlight, heat or water Shelf Life - Minimum 3 years from the date of manufacture Product Dimension - Width: maximum 1600 mm - Roll diameter: 650-750 mm - Length: 2800-3000 m Materials - Nonwoven with nanofibers Country / Region of Origin - Made in Hong Kong
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