Introduction to the Rotary type air filter paper folding machine

In truck air filter production lines, the Rotary type air filter paper folding machine is the core equipment, which is specially used to fold filter paper efficiently and accurately, and the air corrugation (corrugation) or Z-shaped pleat structure required by air filters. Its design needs to consider the filter material characteristics (such as corrugation, tensile strength) and the performance requirements of the filter (such as corrugation, dust holding capacity). The following are its key points:

1. Equipment functions and features
Special folding process: Continuously fold the filter material into a uniform wave or zigzag shape to increase the filtration area and optimize the airflow path.
High-precision control: Ensure that the crease depth and spacing are consistent to avoid stretching or damage to the filter material (the fold accuracy directly affects the filtration efficiency).
Material adaptability: Can process glass fiber paper, etc. Some models are equipped with static elimination devices to prevent material adhesion.
Online production: Often linked with gluing, laminating, and slitting equipment to achieve fully automated assembly line operations.

2. Core structure
Feeding system: smoothly convey the filter material roll, and control the tension to avoid deformation.
Folding roller group: specially designed roller surface with convex or groove, forming regular folds through pressure.
Heat setting device (optional): heats the thermoplastic filter material (such as PP) to fix the crease.
Correcting mechanism: adjust the filter material position in real time to prevent folding deviation.
Reeling/cutting unit: output continuous folded material or fixed-length cut pieces on demand.

3. Workflow
1. Unwinding: The filter material is unrolled from the roll and enters the folding area under tension control. 
2. Folding: The roller squeezes the filter material to form preset folds (such as V-shaped, W-shaped), and the folding distance is adjustable. 
3. Shaping: The folds are stabilized by heating or cold pressing (depending on the material). 
4. Output: The folded filter material directly enters the next process (such as glue coating and lamination) or is rolled up for storage.

4. Industry Applications
HVAC system: production of commercial/industrial air filters.
Automobile manufacturing: engine air filter, cabin air filter.
Clean room: HEPA/ULPA high efficiency filter.
Household appliances: air conditioner, air purifier filter element.

5.Advantages 
More than 10 times more efficient than manual or flat folding. 
Pleat uniformity is better than traditional methods, improving filtration performance.

6.Maintenance and selection suggestions
Maintenance focus: Regularly clean the residual glue stains on the roller and check the sensitivity of the correction sensor. 
7.Selection key:
Choose the roller material (steel, rubber, etc.) according to the filter material characteristics (temperature resistance, ductility). 
Match the production line speed to avoid becoming a production capacity bottleneck.

The Rotary type air filter paper folding machine directly determines the filtration efficiency and life of the filter element in the large air filter production line, and is a key equipment to improve product competitiveness. Advanced models have integrated AI visual inspection, real-time feedback on folding quality, and promote intelligent production.