Product description
Resin bonded depth filter cartridge for high dirt load and demanding liquid filtration
The resin bonded filter cartridge is designed for liquid filtration applications where high solids loading, stable differential pressure and long service life are required. Manufactured from a rigid resin-bonded fibre matrix, this cartridge provides true depth filtration with excellent mechanical strength and consistent performance throughout the operating cycle.
Resin bonded cartridges are particularly suited for heavily contaminated, viscous or chemically aggressive fluids where conventional melt blown or pleated cartridges may reach their operating limits.
Filtration principle
The cartridge operates on a depth filtration principle using a resin-bonded fibre structure with controlled porosity. Particles are retained progressively throughout the thickness of the media rather than only on the surface.
This filtration principle provides:
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progressive particle capture from coarse to fine
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high dirt holding capacity
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stable pressure drop behaviour
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consistent filtration efficiency over time
Contaminants are distributed evenly through the entire filter depth, extending service life and improving process stability.
Media technology and uniqueness
The filter media consists of composite fibres bonded together with phenolic resin, creating a rigid and stable filtration matrix. The controlled pore structure prevents fibre migration and ensures reliable particle retention.
Depending on configuration, the media can be supplied as:
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grooved depth structure, increasing effective surface area and improving flow distribution
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multi-layer depth structure, creating a defined filtration gradient across the cartridge wall
Key media characteristics include:
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rigid resin bonded fibre matrix
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graded pore structure for depth filtration
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no fibre release
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excellent resistance to differential pressure
This construction makes the cartridge highly reliable in demanding process environments.
Design and construction
The resin bonded filter cartridge is manufactured as a single solid body with precision-controlled porosity. The rigid structure provides excellent mechanical stability and resistance to collapse under differential pressure.
Typical design features include:
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solid resin bonded depth media
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optional grooved outer geometry for increased surface area
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robust construction for high solids loading
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silicone-free formulation suitable for sensitive processes
The cartridge is compatible with standard industrial filter housings.
Materials of construction
Standard construction materials include:
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Filter media: Phenolic resin bonded composite fibre
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Core: Integrated resin bonded structure
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End faces: Resin bonded fibre
The silicone-free composition makes the cartridge suitable for coatings, inks and adhesive applications.
Available micron ratings
Typical micron ratings include:
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1 µm
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5 µm
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10 µm
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25 µm
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50 µm
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100 µm
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up to 200 µm
This wide range allows accurate matching to both pre-filtration and fine filtration duties.
Operating conditions
Typical operating conditions include:
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Maximum operating temperature: up to 135 °C
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Maximum operating pressure: up to 0.45 MPa
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Solvent resistance expansion: < 2% in ketones, ethers, phenols and alcohols
Exact limits depend on cartridge length, micron rating and process conditions.
Key benefits
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High dirt holding capacity
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Stable differential pressure behaviour
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Excellent chemical compatibility
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No fibre shedding or migration
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Strong resistance to pressure and collapse
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Long operational lifetime
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Silicone-free formulation
Typical applications
Resin bonded filter cartridges are commonly used in:
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industrial process water filtration
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coatings, inks and adhesives
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chemical processing
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resins and polymers
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oils, solvents and viscous liquids
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applications with high particulate loading
Configuration and quotation
Resin bonded filter cartridges are supplied on a configuration basis. Selection parameters include:
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micron rating
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cartridge length
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outer geometry (standard or grooved)
This ensures the cartridge is correctly matched to the filtration duty and operating conditions.