Engineered for extreme structural consistency, high filtration efficiency, and robust industrial continuous throughput
A technical whitepaper examining precision extrusion, micro-fiber alignment, and electrostatic charge longevity in high-performance nonwovens.
The production of sub-micron filtration fibers demands deep mastery over polymer rheology and high-velocity gas dynamics. Advanced meltblown fabric machines utilize ultra-high Melt Flow Index (MFI) polypropylene (ranging from 1200 to 1800 g/10 min). The raw polymer is processed through precision-machined hanger-type die heads featuring a coat-hanger internal design. This specific channel configuration minimizes stagnation points, guarantees uniform residence time distribution, and mitigates polymer degradation.
As the molten polymer emerges from capillaries spanning diameters of 0.15 to 0.30 mm, it is subjected to high-velocity, high-temperature drawing air streams (often reaching supersonic speeds at the exit slot). This thermal process attenuates the liquid streams into ultra-fine filaments, yielding an average fiber diameter of 1 to 3 microns. Precision control of the air gap, knife-edge angle, and thermal profile within ±0.5°C is required to prevent defects such as fly-fluff or "shot" (unattenuated polymer droplets).
Established in 2014, Pujaing HG Nonwoven Machinery has grown into a world-recognized leader in high-performance nonwoven fabric plant development. Integrating more than 20 years of technical heritage and proprietary R&D, the company has deployed over 300 turnkey PP spunbond and meltblown fabric production lines globally.
HG's signature 5th Generation Spunbond and Meltblown technology integrates an optimized, energy-saving distribution system. This allows global manufacturers to reduce overall carbon footprints and lower operating expenditures (OPEX) while achieving extreme mechanical uniformity and high filtration efficiency. By combining advanced overseas concepts with localized production flexibility, we deliver systems engineered for reliability, safety, and sustainable longevity.
How localized manufacturing ecosystems, integrated supply chain clusters, and advanced component optimization deliver superior ROI.
Leveraging highly optimized regional supply chain ecosystems (such as the machinery manufacturing clusters in Zhejiang), Chinese manufacturers deliver industrial nonwoven solutions at capital expenditures (CAPEX) up to 40% lower than European counterparts, without compromising mechanical integrity.
Meltblown die heads are machined using high-grade Japanese or European SUS420J2 or SUS630 steel, treated with vacuum quenching and mirror polishing to achieve a surface roughness of Ra < 0.02 μm. This prevents melt degradation and extends operation cycles.
From raw material feeding systems, extrusion lines, and online electrostatic electret chargers, to automatic winders, slitting machines, and recycling granulators, Chinese factories supply completely integrated automated production loops.
Engineered to deliver high tensile strength, uniform barrier protection, and exceptional product consistency.
Optimized nonwoven technologies mapped to critical global industry verticals.
Different market segments require distinct fiber properties, basis weights (GSM), and mechanical performance parameters. Choosing the correct machinery configuration prevents excessive raw material waste and ensures compliance with targeted standards.
Comprehensive system integration from raw material handling to fully circular waste recycling loops.
Automated vacuum feeding, doser-controlled additive blending, high-precision extrusion screw zones, and continuous melt filtration units.
Negative-pressure air drafting system combined with aerodynamic web laying technology, ensuring isotropic fiber orientation and web uniformity.
Thermo-bonding oil heaters with high thermal accuracy, coupled with fully automated contact winders and high-precision shear disc slitters.
Key performance metrics analyzed across various capacity levels and web configuration types.
| Line Specification / Model | Working Width (mm) | Max Design Output (Ton/Year) | Target Fiber Diameter (μm) | Primary Application Field |
|---|---|---|---|---|
| HG-M1600 High Efficiency Single Beam | 1600 | 800 - 1,200 | 1.2 - 2.5 | H13/H14 HEPA Filters, N95 Masks, Oil Absorbents |
| HG-SMS3200 Composite Line | 3200 | 4,500 - 6,000 | Spunbond: 12-18 / Meltblown: 1.5-3.0 | Surgical Drapes, Gowns, Medical Barriers, Sanitary Liners |
| HG-SSMMS2400 High Barrier Line | 2400 | 3,800 - 5,200 | Spunbond: 10-15 / Meltblown: 1.0-2.2 | Premium Incontinence Products, Cleanroom Apparel, FFP3 Filtration |
| HG-M2400 Dedicated Meltblown Plant | 2400 | 1,500 - 2,200 | 0.8 - 2.0 | Automotive Cabin Filters, Industrial HVAC Systems, Water Filtration |
Maximizing Particle Filtration Efficiency (PFE) and minimizing pressure drop characteristics.
Meltblown media naturally filters particles through mechanical mechanisms like inertial impaction, interception, and diffusion. However, for sub-micron aerosols (such as viruses, fine combustion products, and dust particles under 0.3 μm), mechanical trapping alone is insufficient. It would require an excessively dense web structure, resulting in a high pressure drop that restricts airflow.
To achieve high filtration efficiency (e.g., FFP2, FFP3, or N95/N99 criteria) while maintaining low breathing resistance, meltblown fibers must undergo an electrostatic charging process. This creates electret material, which relies on two main technologies:
Tailored technology loops for hygiene, medical, packaging, and agriculture.
Direct, engineering-focused answers to the most common procurement and operational inquiries.
Examine our specialized machinery lines for spunbond processing, lamination, and waste recycling.
HG NONWOVEN
