TPU Coated 70D Nylon Fabric for Blood Pressure Cuffs

Our TPU Coated 70D Nylon Fabric is a technical composite material optimized for the demanding requirements of blood pressure monitoring equipment. The base is a finely woven 70D nylon fabric, chosen for its superior tensile strength, excellent tear resistance, and critically, its minimal elongation under pressure. This stable substrate is precision-coated on one side with a uniform layer of medical-grade Thermoplastic Polyurethane (TPU), forming a flawless, impermeable barrier essential for maintaining a consistent air chamber. The fabric’s low-stretch characteristic is paramount, as it prevents the cuff from expanding or “ballooning” during inflation, thereby ensuring accurate pressure transduction and reproducible measurement results. It offers an ideal balance of lightweight durability, flexibility for patient comfort, and reliable sealing performance. This fabric is the preferred material for constructing the inflatable bladders in a wide range of blood pressure cuffs, from manual sphygmomanometers to automatic digital monitors, used in clinical, home care, and ambulatory settings.

Key Features & Benefits

• Precise Pressure Measurement:​ The low-stretch 70D nylon base minimizes cuff expansion during inflation, ensuring accurate pressure transduction from the bladder to the artery, leading to consistent and reliable readings.
• Excellent Airtightness & Reliability:​ The continuous medical-grade TPU coating provides a perfect seal, preventing air leaks and ensuring stable pressure maintenance during the measurement cycle for accurate results.
• High Strength-to-Weight Ratio:​ Offers the necessary durability for repeated use and frequent cleaning, while contributing to a lightweight and comfortable cuff design for the patient.
• Abrasion & Puncture Resistant:​ Resists damage from repeated wrapping, Velcro hook-and-loop fasteners, and general handling, extending the product’s service life in both clinical and home environments.
• Flexible & Conformable:​ Remains supple to comfortably wrap around limbs of various sizes and contours, ensuring a proper fit for accurate readings and patient comfort.
• Strong & Consistent Weldability:​ The TPU coating facilitates robust, airtight high-frequency (HF) or thermal welding, creating durable, leak-proof seams essential for bladder integrity over thousands of inflation cycles.
• Cleanable & Durable Surface:​ The coated surface resists stains from body oils and lotions and can be easily wiped clean with appropriate disinfectants, supporting infection control protocols.