Meltblown Masterbatch Manufacturers

Nonwoven Masterbatch Industry Knowledge Extension

From raw materials to processes: the core role of meltblown masterbatch in medical protective materials

1. The irreplaceable nature of meltblown masterbatch in the field of medical protection

Industry background: Meltblown nonwoven fabrics are the core filter layer of medical masks and protective clothing, and their performance directly depends on the quality of masterbatch raw materials and process adaptability.

Core requirements: Medical-grade meltblown fabrics must meet high filtration efficiency (≥95%), low breathing resistance, antibacterial properties and biocompatibility, and meltblown masterbatch is the key carrier to achieve these indicators.

2. Raw material selection: formula design of medical meltblown masterbatch

Base resin: High melt index polypropylene (PP, MFI≥1500g/10min) ensures uniform spinning of ultrafine fibers (1-5μm).

Functional additives:
Electret additives (such as tourmaline, SiO₂): Enhance particle filtration efficiency through electrostatic adsorption.
Antibacterial agents (silver ions, quaternary ammonium salts): Give materials long-lasting antibacterial function to avoid secondary infection.
Anti-aging agent: Improve the stability of materials during gamma ray sterilization or long-term storage.

3. Process adaptability: How does masterbatch affect meltblown production

Rheological property control: The melt index (MFI) of the masterbatch needs to match the spinneret aperture and hot air temperature to avoid broken wires or blockages.
Dispersion uniformity: If the nano-level additives are not evenly dispersed, it will cause fluctuations in filtration efficiency or carbon deposition on the nozzle.
Low volatile matter requirements: Medical masterbatch must pass VOC testing to prevent the release of harmful gases during production.

4. Special certification and challenges for medical scenarios

Compliance standards: Must be certified by FDA, CE or YY/T 0469 (Chinese medical mask material standard).
Biosafety: Masterbatch must not contain migrating harmful substances such as plasticizers and heavy metals.
Cost balance: The price of high-end functional masterbatch is 2-3 times that of ordinary masterbatch, and the cost performance needs to be optimized.

5. Future trends: high performance and sustainability in parallel

Multifunctional integration: development of composite masterbatches that are antiviral, breathable, and biodegradable.

Application of recycled materials: exploring the feasibility of medical-grade rPP in meltblown masterbatches to respond to environmental protection policies.