Industrial Medium-Efficiency Filter Cartridge

I. Product Overview

This series of medium-efficiency filter cartridges is specifically developed for high-pollution industrial applications such as spray painting, welding fume extraction, and laser processing. Featuring an innovative four-stage progressive filtration system (pre-filtration → precision interception → deep adsorption → final purification), it achieves a PM0.3 particle capture efficiency of ≥99.97% and a VOCs removal rate of ≥85%.

The filter cartridges are widely compatible with spray booths, welding fume extractors, laser processing equipment, and other industrial systems. They effectively capture paint mist, metal dust, and organic exhaust gases, providing comprehensive protection for operator health and fully complying with national occupational health and safety standards.

II. Core Functional Positioning

Serving as a critical transitional component within air filtration systems, this medium-efficiency filter is designed to capture fine and medium-sized particles in the 1–5 μm range, including pollen, mold spores, and fine dust. Its high filtration efficiency significantly reduces the load on downstream high-efficiency filters, extending their service life.

At the same time, the filter precisely balances filtration efficiency and airflow resistance, making it suitable for industrial and commercial environments with elevated air cleanliness requirements, while ensuring that outlet air quality meets international clean air standards.

III. Core Materials & Manufacturing Process

The filter media is composed of premium ultrafine polyester fibers combined with electrostatically charged (electret) materials, forming a multi-layer gradient structure for deep air purification. The media offers high efficiency with low resistance, is environmentally friendly, odorless, bright white in appearance, lightweight, and features clean, well-defined pleats. It completely eliminates the irritation risks associated with traditional fiberglass filter materials.

Both sides of the cartridge are protected by powder-coated metal support meshes, providing excellent heat resistance and deformation resistance to maintain stable internal airflow channels. The frame is constructed from laser-welded aluminum alloy and sealed with TPU gasket strips, delivering superior sealing performance with an air leakage rate of less than 0.001%.

Production is carried out using a dust-free, fully enclosed manual pleating process, ensuring the filter media remains structurally stable, resistant to deformation or breakage, and free from dust leakage.

IV. Filtration Performance

The filter cartridge delivers a PM0.3 filtration efficiency of ≥99.97% with an initial pressure drop of ≤35 Pa, allowing smooth and stable airflow. It efficiently captures more than 70 types of airborne contaminants, including fine suspended bacteria, viruses, fungi, pollen, asbestos, and other particulates, enabling high-efficiency circulation filtration and providing clean air for both downstream equipment and the working environment.

V. Key Product Advantages

1. High-Efficiency Gradient Filtration
   Fiber density increases progressively from the air inlet to the outlet side, forming a stepwise filtration structure from coarse interception to fine particle capture. Leveraging advanced high-efficiency, low-resistance filter media technology, this design overcomes the traditional trade-off between high efficiency and high pressure drop, delivering significantly improved purification performance.

2. Energy-Saving & Low Consumption
   Optimized airflow channel design results in low initial pressure resistance, effectively reducing energy consumption of ventilation systems and lowering long-term operating costs.

3. High Dust-Holding Capacity
   The pleated structural design greatly increases the effective filtration area, achieving up to a 40% higher dust-holding capacity compared to conventional filter cartridges. It combines strong dust capture capability, large dust capacity, and excellent air permeability, ensuring stable and long-lasting filtration performance.

4. Extended Service Life
   The dust-free, fully sealed manual pleating process ensures a robust filter structure that resists deformation and breakage, prevents dust shedding and air bypass, and significantly extends service life while reducing replacement frequency and maintenance costs.

VI. Maintenance & Replacement Guidelines

1. Replacement Criteria

The filter cartridge should be replaced promptly under any of the following conditions:
① Noticeable reduction in equipment suction or airflow;
② Visible discoloration of the filter surface (yellowing or blackening) or evident dust accumulation;
③ Scheduled replacement based on operating hours and ambient dust concentration.

2. Installation Requirements

Installation must strictly follow the product manual. Ensure that the airflow direction matches the filter’s structural design to avoid performance degradation caused by incorrect installation.

3. Precautions

• This product is not washable. Do not strike, compress, or squeeze the filter media, as this may cause structural damage and filtration failure.

• For high-temperature applications, select models rated for temperatures above 100°C to prevent material aging or deformation.

• Thoroughly clean residual dust and debris inside air ducts prior to installation to avoid secondary contamination.

• It is recommended to use original manufacturer filter cartridges to ensure optimal compatibility, equipment protection, and operational stability.

VII. Application Scenarios

1. Industrial Processing

• Soldering Fume Extraction
  Effectively filters particulate matter, fumes, and odors generated during soldering operations, creating a cleaner and more comfortable working environment.

• Laser Processing (Marking / Cutting, etc.)
  Precisely captures fumes generated during processing, preventing contamination of product surfaces, reducing defect rates, and improving overall product yield.

• Maintenance Workstations
  Efficiently filters mixed exhaust gases and various pollutants produced during repair operations, safeguarding worker respiratory health.

2. Beauty & Aesthetic Industry

Suitable for hair salons, nail studios, and medical aesthetic institutions. Effectively filters fumes generated by CO₂ lasers, fractional lasers, electrosurgical units, and similar equipment, significantly improving indoor air quality.

3. Food & Pharmaceutical Industry

Ideal for food packaging workshops and pharmaceutical clean production lines. The filter meets GMP cleanliness requirements, ensuring a controlled and hygienic production environment in compliance with strict industry standards.