The difference of PP type air filters and PU type air filters- Hebei Zhengcan Filter Manufacturing Co. Ltd.

PP (Polypropylene) and PU (Polyurethane) are two different materials commonly used in air filters. Here's a comparison of PP type air filters and PU type air filters:

Material Composition:

PP Type Air Filters: PP filters are made of polypropylene, which is a thermoplastic polymer. It is known for its excellent chemical resistance, low density, and high tensile strength.

PU Type Air Filters: PU filters are made of polyurethane, which is a polymer composed of organic units linked by urethane links. Polyurethane offers good flexibility, durability, and resistance to abrasion.

Filtration Efficiency:

PP Type Air Filters: PP filters typically provide efficient particulate filtration. They can effectively capture dust, pollen, and other solid particles from the air.

PU Type Air Filters: PU filters also offer good filtration efficiency and can effectively trap airborne particles. They are commonly used in automotive air filters and HVAC systems.

Moisture Resistance:

PP Type Air Filters: PP filters have good moisture resistance, making them suitable for humid environments. They can withstand exposure to water and moisture without significant degradation.

PU Type Air Filters: PU filters also exhibit good moisture resistance, making them suitable for applications where moisture or high humidity levels are present.

Chemical Resistance:

PP Type Air Filters: PP filters have excellent chemical resistance. They can withstand exposure to a wide range of chemicals without degradation.

PU Type Air Filters: PU filters offer good resistance to many chemicals but may not be as resistant as PP filters. Compatibility with specific chemicals should be checked before use.

Durability:

PP Type Air Filters: PP filters are known for their durability and can withstand repeated use without significant wear and tear. They have good resistance to impact and mechanical stress.

PU Type Air Filters: PU filters are also durable and can withstand regular use. They are flexible and less prone to cracking or breaking.

Cost:

PP Type Air Filters: PP filters are generally more affordable compared to PU filters, making them a cost-effective option for various applications.

PU Type Air Filters: PU filters are relatively more expensive than PP filters due to the higher cost of raw materials and manufacturing processes.

1. Our pp type air filters are panel filters using synthetic non-woven fabrics. Synthetic non-woven fabrics have very good filtering performance, but the hardness is lower than that of cellulose blotting paper.

2. To ensure proper stiffness of the synthetic pp type air filters, the filter media is placed in an injection-molded plastic frame. Special plastic mesh provides additional reinforcement, which also prevents damage during handling.

3. We use light and strong injection molding material to make our pp type air filters light and strong.

4. Multi-woven non-woven pp type air filters also make the filtration efficiency higher.