Melt Blown Filters

Polypropylene Depth Filters with Multiple Surface Structures

CMI Melt Blown Filter Cartridges are depth filtration elements manufactured from 100% pure polypropylene using a thermal bonding process without adhesives or binders. The controlled melt blown process creates a three-layer graded density structure, with finer fibers toward the inner core and coarser fibers on the outer layers, enabling effective particle retention and high dirt-holding capacity. To further enhance filtration performance and service life, CMI melt blown cartridges are available with multiple surface structures, allowing users to select the optimal design based on contamination type and operating conditions.          

Key Features

• True depth filtration with graded density structure
• Three-layer construction for improved particle retention
• High dirt-holding capacity and long service life
• 100% polypropylene construction (no adhesives)
• Excellent chemical compatibility
• Low fiber shedding
• Broad range of micron ratings
• Available in multiple surface patterns for performance optimization

 

Surface Structure Options

Smooth Surface

• Standard melt blown structure
• Balanced filtration efficiency and pressure drop
• Suitable for general industrial applications

Groove Surface

• Grooved outer surface increases effective filtration area
• Improves dirt-holding capacity
• Suitable for higher contaminant loading

Rough Surface

• Roughened surface structure
• Enhances particle capture on the outer layer
• Extends service life in high-solids applications

Dot Surface

•  Special dot-pattern outer surface
• Increased surface area
• Improved contaminant distribution and reduced surface blinding

Embossed Surface

• Embossed outer layer design
• Further increases filtration area
• Stable pressure drop during operation

Orange Surface

• Enhanced polypropylene formulation with optimized fiber structure
•  Improved mechanical strength and dirt-holding performance
•  Suitable for demanding industrial conditions

Note: All surface structures share the same internal graded depth filtration structure. Surface patterns are designed to optimize surface loading and extend cartridge service life.

Materials of Construction

• Filter Media: Polypropylene (PP)
• Inner Core: Polypropylene
• End Caps: Polypropylene
• Seal Materials: NBR, EPDM, Viton, Silicone

Specifications

• Micron Ratings: 1-150 μm
• Lengths: 5”/10”/ 20”/ 30”/ 40”
• Outside Diameters: 60 mm/62 mm/114 mm
• Inside Diameters: 28 mm/30 mm/32 mm/34 mm/36 mm/38 mm/110 mm
• Maximum Operating Temperature:65°C
• Maximum Operating Pressure:2.0 bar @ 21°C
• End Connection:Double Open End (DOE)/222 O-ring (flat / fin)/226 O-ring (flat / fin)/Custom adapters available upon request

 

Applications

• Water treatment & RO pretreatment
• Industrial process water
• Chemical processing
• Cooling water systems
• Plating and electronics industry
• General industrial liquid filtration

 

Why Choose CMI Melt Blown Filter Cartridges

• Multiple surface designs for performance optimization
• Consistent melt blown manufacturing quality
• Broad size and micron range
• Competitive alternative to international brands
• Competitive alternative to international brands