How to Choose the Right Pleating Machine for HEPA/ULPA Filters

"In filter production, ROI and reliability define success. Our HEPA Mini Filter Pleating Machine turns precision for high-temperature media into real-world results: less waste, more output, and greater profits for your clients. This isn’t just a machine—it’s a strategic asset built to scale your quality and secure your growth."

Nina Peng - Operations Manager

1. Pleat Precision

HEPA filters require pleat height and spacing to be consistent within ±0.1mm. Any deviation will reduce filtration efficiency. The machine must feature a high-precision control system to ensure uniformity.

2. Material Compatibility

HEPA/ULPA filters often use high-temperature resistant glass fiber or PP filter media, which are more fragile than ordinary materials. The machine must handle these materials gently to avoid damage.

3. Automation Level

Mass-producing HEPA filters requires high automation to reduce manual error and improve efficiency—look for machines with integrated feeding, pleating, gluing, and cutting functions.

How to make the right choice?

Strict Technical Requirements

• • HEPA efficiency: ≥ 99.97% (0.3μm)
• • ULPA efficiency: ≥ 99.999%
• • Pleat tolerance: ±0.1mm
• • No skewing or material damage

Filter Media Characteristics

• • Materials: Glass fiber, PP, PTFE
• • Fine fibers, high efficiency
• • Low toughness, easy to damage

Equipment Selection Key Points

• • High-precision servo control system
• • Accurate tension control & soft feeding
• • Integrated automation processes
• • Customizable for different specifications

Daily Maintenance

• • Clean pleating knives and glue nozzles regularly
• • Inspect core components for wear
• • Calibrate tension control systems
• • Replace consumable parts in time

Tongchen’s 300mm Pleat Height HEPA Mini Filter Pleating Machine is designed to meet strict HEPA / ULPA production requirements.

Ultra-Precision Pleating Control

Our HEPA pleating line uses advanced servo control technology and digital interface, allowing pleat height to be adjusted up to 300mm with an accuracy of ±0.05mm —higher than the industry standard of ±0.1mm.

This ensures every pleat is uniform, maximizing filtration area and efficiency for HEPA/ULPA filters.

Integrated Automated Production

Combines pre-slitting, pleating, dual hot-melt gluing, cooling, and conveying. Improves efficiency by up to 50%.

Customization Capability

Supports mini-pleat and deep-pleat configurations with adjustable rollers and gluing systems for different production needs.