Medical intimate-level carbon fiber long-acting antibacterial textile fabric

Abstract

This invention discloses a medical-grade, close-fitting carbon fiber long-lasting antibacterial textile fabric, belonging to the field of functional textile new materials technology. It addresses the shortcomings of existing ordinary antibacterial fabrics, such as short antibacterial duration, poor washability, reliance on chemical antibacterial agents leading to sensitization, and the development of drug resistance with long-term use; medical fabrics suffer from poor breathability, poor sweat-wicking and moisture-locking ability, resulting in stuffiness and stickiness when worn close to the skin, and the tendency to cause acne and itching upon contact with the skin; and conventional fabrics suffer from insufficient mechanical strength, pilling and deformation due to repeated stretching, and an inability to balance medical-grade hygiene with everyday close-fitting comfort. This invention utilizes a blend of nano-hydrophilic modified medical carbon fiber with medical-grade combed cotton, polyester fiber, and spandex to form a three-layer composite textile structure: a skin-friendly and breathable surface layer, a carbon fiber antibacterial functional layer, and a high-elasticity and wear-resistant base layer. Relying on the dual mechanism of physical antibacterial action and adsorption of carbon fiber, a three-dimensional, fully conductive antibacterial network is constructed, achieving a long-lasting and stable antibacterial effect without the need for added chemical antibacterial agents or antibiotics. This fabric is breathable and moisture-wicking, skin-friendly and hypoallergenic, highly elastic and washable. After 50 washes, its antibacterial rate remains ≥95%, meeting medical contact-grade safety standards. It can be widely used in medical clothing, rehabilitation care, maternal and infant wear, and health care equipment. It forms cross-industry synergy with the existing carbon fiber medical and home patent system, perfects the patent layout of new materials across all categories, and has extremely high industrialization and patent protection value.

Description

Technical Field

[0001] This invention relates to the field of functional medical textile materials and close-fitting antibacterial textiles, specifically to a medical-grade close-fitting carbon fiber long-lasting antibacterial textile fabric. Background Technology

[0002] Most antibacterial textile fabrics currently on the market are produced using chemical antibacterial agent soaking and spraying processes. The antibacterial components only adhere to the surface of the fabric and are largely washed away after several washes, resulting in a rapid decline in antibacterial effect. Furthermore, long-term contact of chemical antibacterial agents with the skin can easily cause skin allergies, itching, and even lead to drug resistance in pathogens, failing to meet the safety requirements for medical use, mothers and infants, and people with sensitive skin. Medical-grade intimate apparel fabrics have extremely high requirements for breathability, skin-friendliness, and hygiene. Conventional fabrics have poor moisture-wicking properties, making them stuffy and damp after prolonged wear, which can breed microorganisms. At the same time, ordinary fabrics lack sufficient mechanical properties, making them prone to pilling, deformation, and shrinkage after repeated wear and washing, resulting in poor durability.

[0003] Carbon fiber possesses excellent physical antibacterial, conductive adsorption, biocompatibility, and water-resistant properties. After hydrophilic modification, it can be stably blended with textile fibers, achieving long-lasting physical antibacterial effects without the need for chemical auxiliaries, perfectly solving the core defects of traditional antibacterial fabrics. Summary of the Invention

[0004] Purpose of the invention This invention addresses the technical shortcomings of existing antibacterial textile fabrics by providing a medical-grade, close-fitting carbon fiber long-lasting antibacterial textile fabric. It achieves purely physical long-lasting antibacterial effects, medical-grade safety and low allergy, breathability and moisture wicking, high elasticity and durability, filling the patent gap in the field of carbon fiber medical textiles and broadening the patent track for new carbon fiber materials. Technical solution

[0005] To achieve the above objectives, this invention uses nano-hydrophilic modified medical carbon fiber as the core functional component, which is precisely blended with combed cotton, medical polyester fiber, and spandex in a specific ratio. The fabric is prepared through a three-layer integrated weaving process. The carbon fiber forms a three-dimensional continuous antibacterial network inside the fabric, which physically punctures the cell membranes of pathogenic bacteria and adsorbs odors and microorganisms to achieve broad-spectrum and long-lasting antibacterial effects. The surface layer is treated with skin-friendly brushing, and the bottom layer is optimized for elasticity and abrasion resistance. The entire fabric undergoes pre-shrinking, shaping, and aseptic finishing to meet the standards for medical use close to the body.

[0006] Beneficial effects Purely physical long-lasting antibacterial effect: Built-in carbon fiber three-dimensional antibacterial network, which does not lose its effect when washed, has no chemical residue, no drug resistance, and its antibacterial performance far exceeds that of traditional coated fabrics. Medical-grade safe and hypoallergenic: No harmful additives, zero skin irritation, suitable for special groups such as post-operative patients, sensitive skin, mothers and infants, and meets the safety standards for medical textiles. Excellent wearing comfort: highly breathable, quick-drying, close-fitting without causing sweating, soft to the touch, greatly improving the long-term wearing experience. Excellent mechanical durability: highly elastic and tensile, washable, non-pilling, non-deformable, non-shrinking, and has a longer service life. Cross-industry patent synergy: Connecting existing patents in oral healthcare, orthopedic rehabilitation, and home purification carbon fiber to form a patent barrier across the entire industry chain, significantly enhancing patent value and commercialization potential. Detailed Implementation Preferred embodiment of the present invention: The fabric fiber mass ratio is 57% combed cotton, 37% medical polyester fiber, 4.5% spandex, and 1.5% hydrophilic modified nano carbon fiber; the carbon fiber has a diameter of 220nm and a length of 5mm, and is subjected to plasma hydrophilic activation treatment; after the three layers are woven in one piece, they are pre-shrinked, softened, and sterilely shaped. Testing revealed that the initial antibacterial rate was 99.3% against Staphylococcus aureus, 99.1% against Escherichia coli, and 98.8% against Candida albicans; after 50 washes, the antibacterial rate was 96.2%; the air permeability was 410 mm / s; the skin irritation level was 0; and the dimensional change rate after washing was -1.1%. All performance characteristics are superior to similar products in the industry, and the product can be directly mass-produced industrially. Implementation Conclusion The technical solution of this invention is novel, with clear and fully disclosed formula, structure and performance parameters. It possesses outstanding novelty, inventiveness and practicality, meets the standards for invention patent authorization, and can form a combination protection with existing carbon fiber series patents, thus creating a robust intellectual property barrier.

Claims

1. A medical-grade, close-fitting carbon fiber long-lasting antibacterial textile fabric, characterized in that, It features a three-layer integrated blended composite structure, consisting of a skin-friendly and breathable outer layer, a carbon fiber antibacterial functional middle layer, and a high-elasticity and wear-resistant base layer. The antibacterial functional layer uniformly disperses nano-hydrophilic modified medical carbon fibers, forming a three-dimensional continuous conductive antibacterial network within the fabric. It employs a purely physical antibacterial method, without chemical antibacterial agents or antibiotics, and combines long-lasting broad-spectrum antibacterial, breathable and moisture-wicking, skin-friendly and hypoallergenic, high elasticity and washability. It is medical-grade safe and suitable for multiple scenarios such as medical use, health care, maternal and infant care, and close-fitting wear. It forms a cross-industry patent matrix with carbon fiber medical devices and home purification patents.

2. The medical-grade, close-fitting, long-lasting antibacterial carbon fiber textile fabric according to claim 1, characterized in that, The mass ratio of the nano-hydrophilic modified medical carbon fiber blend is 0.8% to 3.0%; if it is below 0.8%, the antibacterial effect will not meet the standard, and if it is above 3.0%, the fabric hardness will increase and the textile processing difficulty will increase; the carbon fiber monofilament diameter is 150 to 300 nm and the length is 3 to 8 mm. After plasma hydrophilic activation treatment, it is firmly bonded to the textile fiber and is not easy to fall off or precipitate.

3. The medical-grade, close-fitting, long-lasting antibacterial carbon fiber textile fabric according to claim 1, characterized in that, The overall fiber composition of the fabric is as follows: 45%–65% combed cotton, 25%–40% medical polyester fiber, 3%–8% spandex, and 0.8%–3.0% modified nano carbon fiber. This composition balances skin-friendly feel, elasticity, breathability and moisture wicking, and mechanical durability.

4. The medical-grade, close-fitting, long-lasting antibacterial carbon fiber textile fabric according to claim 1, characterized in that, The skin-friendly and breathable outer layer is made of ultra-fine brushed combed cotton fiber, with a smooth and burr-free surface that reduces skin friction and irritation; the carbon fiber antibacterial functional layer has a randomized and uniform blended structure to ensure full coverage of antibacterial function; the high-elastic and wear-resistant base layer is a polyester-spandex blended layer that improves the fabric's tensile strength, pilling resistance, and deformation resistance.

5. The medical-grade, close-fitting, long-lasting antibacterial carbon fiber textile fabric according to claim 1, characterized in that, According to the GB / T20944.3-2008 standard test, the initial antibacterial rate against Staphylococcus aureus, Escherichia coli and Candida albicans is ≥99%, and the antibacterial rate is still ≥95% after 50 standard water washes. The antibacterial effect is long-lasting and does not decrease, and there is no risk of bacterial resistance.

6. The medical-grade, close-fitting, long-lasting antibacterial carbon fiber textile fabric according to claim 1, characterized in that, The fabric has a breathability of ≥350mm / s and a liquid water contact angle of ≤70°. It dries quickly and wicks away moisture without causing stuffiness or sweating. It does not feel sticky even after wearing it close to the skin for a long time, reducing the risk of skin itching, acne, and eczema.

7. The medical-grade, close-fitting, long-lasting antibacterial carbon fiber textile fabric according to claim 1, characterized in that, The fabric has a breaking elongation of ≥300%, a washing dimensional change rate of ≤±2%, is resistant to repeated machine washing and stretching, and is not prone to pilling, shrinkage, or deformation. Its service life far exceeds that of conventional antibacterial fabrics.

8. The medical-grade, close-fitting, long-lasting antibacterial carbon fiber textile fabric according to claim 1, characterized in that, It contains no fluorescent agents, no heavy metals, and no irritating or sensitizing components. The skin irritation test is grade 0, and its biocompatibility meets the YY / T 0691-2008 standard for medical polymer materials. It can be used directly on the skin by people with sensitive skin, postoperative wounds, and mothers and infants.

9. The medical-grade, close-fitting, long-lasting antibacterial carbon fiber textile fabric according to claim 1, characterized in that, Applicable products include: medical protective clothing, postoperative rehabilitation underwear, bedridden patient care bedding, maternity and baby clothing, nursing care equipment linings, sportswear, and high-end everyday textiles.