Melt Blown Cartridge Filter (Sediment / Spun Filter)

Name: Melt Blown Cartridge Filter
Brand: Prosestim

High Dirt-Holding Capacity with a Graded Pore Structure

The melt-blown cartridge filter is a binder-free depth filter made from 100% pure polypropylene microfibres by thermal bonding. It is used in the 1–150 µm range for RO pre-filtration, process water, food and chemical lines.

Polypropylene Construction

100%

Wide Micron Range

1–150 µm

Wide pH compatibility

1–14

Certificate No: 06009/PR09U

ISO 9001:2015

Melt Blown Cartridge Filter

Product Identity and Technical Summary Panel

A melt-blown (spun / sediment) filter is a one-piece depth filter made by turning molten polypropylene into microfibres and joining them with thermal bonds. Because it contains no adhesives, resins or lubricants, no fibres or extractables get into the filtrate. As the fluid moves from the outer surface of the cartridge towards the centre, particles are left not at the surface but throughout the wall thickness. It therefore retains a wide range of particles with low pressure loss in RO pre-filtration, process water, chemical and food and beverage lines.

Twelve micron grades from 1 µm to 150 µm, combined with 100% pure polypropylene media and a coreless construction, suit food, beverage, process water and petrochemical applications. Because the cartridges are made in standard lengths from 5″ to 40″, with 60 mm or 110 mm outer diameters, DOE or SOE end types and 215, 222 or 226 O-ring options, they can be configured to suit your existing filter housing.

The micron rating alone is not an adequate criterion. Besides the target particle size, the fluid chemistry, operating temperature and line pressure must be taken into account and the gasket material chosen accordingly. When the choice respects the replacement ΔP limit, the cartridge maintains the expected retention efficiency throughout its service life.

Melt-blown cartridge filter with both ends open (DOE) — Melt Blown Cartridge Filter – Both Ends Open

Melt-blown cartridge filter with red gaskets at both ends (DOE) — Melt Blown Cartridge Filter – DOE with Gasket

Melt-blown cartridge filter with black gaskets (DOE) — Melt Blown Cartridge Filter – SOE with Gasket

Melt-blown cartridge filter with 215 O-ring and Fin 1 end cap — Melt Blown Cartridge Filter – 215 O-Ring and Fin 1

Melt-blown cartridge filter with 215 O-ring and Fin 2 end cap — Melt Blown Cartridge Filter – 215 O-Ring and Fin 2

Melt-blown cartridge filter with 215 O-ring and flat end cap — Melt Blown Cartridge Filter – 215 O-Ring and Flat Cap

Melt-blown cartridge filter with 222 long O-ring and Fin 1 end cap — Melt Blown Cartridge Filter – 222 Long O-Ring and Fin 1

Melt-blown cartridge filter with 222 long O-ring and Fin 2 end cap — Melt Blown Cartridge Filter – 222 Long O-Ring and Fin 2

Melt-blown cartridge filter with 222 long O-ring and flat end cap — Melt Blown Cartridge Filter – 222 Long O-Ring and Flat Cap

Melt-blown cartridge filter with 226 O-ring and Fin 1 end cap — Melt Blown Cartridge Filter – 226 O-Ring and Fin 1

Melt-blown cartridge filter with 226 O-ring and Fin 2 end cap — Melt Blown Cartridge Filter – 226 O-Ring and Fin 2

Melt-blown cartridge filter with 226 O-ring and flat end cap — Melt Blown Cartridge Filter – 226 O-Ring and Flat Cap

Melt-blown cartridge filter with fin end cap — Melt Blown Cartridge Filter – Spring Fin

Key Technical and Structural Features

Filter Media: 100% pure polypropylene; thermally bonded, additive-free microfibre structure.
Filter Lengths: 5" (127 mm)
10" (254 mm)
20" (508 mm)
30" (762 mm)
40" (1016 mm)
Custom Process Lengths
Filtration Precision: Wide particle retention and grading range of 1 µm – 150 µm.
Operating Compatibility: Reverse Osmosis (RO) Pre-Filtration
Food & Beverage Lines
Process Water Treatment
Petrochemicals and Aggressive Chemicals
Construction Type: Graded-density depth filter: outer layers retain coarse particles, inner layers finer ones.
Connection Types: DOE: without gasket, with gasket, with end cap gasket
SOE: 215 / 222 / 226 O-ring; flat / Fin 1 / Fin 2 end cap
Production Model: Standard series production, with configurations tailored to process samples and technical drawings.
Quality and Verification: Post-production verification of appearance, dimensional tolerances and micron accuracy.

Liquid Flow Performance per 10"

Initial Pressure Drop: Chart Data Points 10" cartridge · ΔP by micron grade · Water @ 20 °C

Flow	1 µm	5 µm	10 µm	25 µm
10 L/min	0.026 bar	0.023 bar	0.021 bar	0.009 bar
20 L/min	0.053 bar	0.046 bar	0.043 bar	0.019 bar
30 L/min	0.079 bar	0.068 bar	0.065 bar	0.028 bar
40 L/min	0.106 bar	0.091 bar	0.086 bar	0.037 bar

Values are based on initial differential pressure (ΔP) measurements.

1 µm

5 µm

10 µm

25 µm

Water Flow Rate Performance

Prosestim melt-blown cartridge filters offer water flow performance optimised with depth filtration technology. The multi-layer fibre structure provides stable filtration at high flow with a low initial differential pressure. Our micron options from 1 µm to 150 µm maintain balanced differential pressure values even at increasing flow rates, providing energy efficiency and process safety. The test data below show the pressure-flow behaviour of our melt-blown cartridges of different micron grades on a 10″ basis.

Performance Advantages in Water Filtration

Filtration Architecture and Working Principle

The key difference between Prosestim melt-blown (spun) cartridge filters and standard surface filters is their “true graded density” architecture. In this structure, where 100% polypropylene microfibres are thermally bonded together, the fluid meets a progressively narrowing labyrinth as it moves from the outer surface of the filter to its inner core.

STEP 01

Graded Depth Architecture and Flow Control

Fibre diameter and fibre density are varied in a controlled way through the wall thickness of the melt-blown cartridge. Thicker fibres and larger pores in the outer layers handle coarse particles, while fibres that become finer and pores that narrow towards the inside retain smaller particles. Because flow is spread through the entire wall thickness, no single layer is overloaded and pressure loss stays under control.

PROCESS BENEFIT The graded depth architecture prevents blinding at the filter surface. Because the contaminant load is spread through the cartridge's entire wall thickness instead of building up on a single plane, differential pressure (ΔP) rises slowly. The cartridge reaches its maximum dirt-holding capacity before clogging, and its service life is significantly longer than equivalent surface filters, lowering operating costs.

STEP 02

Thermally Bonded Microfibre Matrix and Structural Reliability

During production, the polypropylene fibres are fused together by thermal fusion; no chemical binders or adhesives are used. Even at high pressure differences, the tortuous path structure does not break down; stable filtration performance is maintained over a long period, particle retention efficiency is preserved and process safety is supported.

PROCESS BENEFIT The thermally bonded microfibre matrix stops fibre migration and prevents fibres from getting into the filtered fluid. Because it contains no chemical binders or adhesives, it releases no extractables. Because the structure does not break down under pressure fluctuations, the risk of retained particles being released and of bypass is minimised; it provides high-purity filtration in food, beverage and pharmaceutical applications.

STEP 03

Pore Architecture and Micron Rating

The micron rating shows what size of particle the cartridge retains and is determined by the fibre diameter and density profile. In melt-blown cartridges this value is nominal: most particles of the stated size are retained, while a smaller proportion may pass. Twelve grades from 1 µm to 150 µm allow selection within the same product family, from coarse pre-filtration to fine final filtration.

PROCESS BENEFIT The right micron grade ensures both retention of the target particle and a reasonable change interval. A grade finer than necessary causes early clogging of the cartridge; a grade coarser than necessary lets the target particle pass.

Filter Media and Structural Engineering Design

Prosestim melt-blown filters are made from 100% pure polypropylene raw material, free of any adhesives, resins or silicone binders, by a high-technology thermal bonding method.

This design works on the graded density principle: coarse particles are trapped in the larger pores of the outer layers, and fine particles in the precise pores that narrow towards the inner core. This means the filter surface does not clog early, giving maximum dirt-holding capacity and the longest service life.

Parameter	Value
Filter Media	100% High-Purity Polypropylene
Micron Ratings	1 µm, 3 µm, 5 µm, 10 µm, 15 µm, 20 µm, 25 µm, 30 µm, 50 µm, 80 µm, 100 µm, 150 µm
Support Structure	Coreless
End Cap Type	SOE, DOE
O-Ring Gasket	Silicone, Nitrile, EPDM, Viton, PTFE (Teflon)
Outer Diameter (Standard)	60 mm ±1 mm
Outer Diameter (Big Blue)	110 mm ±1 mm
Inner Diameter	28 mm ±1 mm
Length	5 Inch, 10 Inch, 20 Inch, 30 Inch, 40 Inch (Custom Cutting Available)

Physical Construction and Effective Filtration Volume

Unlike conventional depth filters, the melt-blown cartridge offers a multi-layer, graded-density pore structure. Because all lengths from 5 to 40 inches are made in one piece, the body has no joints and therefore no bypass path. The fibre density profile increases the amount of particles retained per unit volume, extending cartridge life. The length is chosen according to line flow and the target change interval.

Filter Length	Area of Use	Construction
5 inch	Small-scale / sampling lines	One-Piece
10 inch	Standard industrial filter housing	One-Piece
20 inch	Medium-scale flow management	One-Piece
30 inch	High-capacity systems	One-Piece
40 inch	Maximum flow and long life	One-Piece

Filter Material Chemical Compatibility Guide

Melt-blown cartridge filters are made from 100% polypropylene (PP) raw material. The table below shows the resistance profile of PP media for chemical groups including water-based chemicals, acids, bases, organic solvents and oils. Matching the application correctly is critical for filter life and process safety.

E: Excellent · G: Good · F: Fair · P: Poor · N/R: Not recommended

Water and Inorganic Chemicals

Chemical Group	Example Chemical	Polypropylene
Drinking Water / Water	Process water, deionised water	E
Organic Acids	Acetic acid, citric acid	E
Dilute Inorganic Acids	Dilute HCl, H₂SO₄	E
Strong Inorganic Acids	Concentrated H₂SO₄, HCl	P
Alkalis (Bases)	NaOH, KOH, ammonia	E
Oxidising Agents	H₂O₂, hypochlorite, ozone	P

Organic Solvents and Oils

Chemical Group	Example Chemical	Polypropylene
Alcohols and Ketones	Acetone, MEK, IPA, ethanol	G
Aliphatic Hydrocarbons	Hexane, heptane, white spirit	G
Aromatic Hydrocarbons	Toluene, xylene, benzene	F
Mineral and Industrial Oils	Machine oil, fuel oil	F
Vegetable and Animal Oils	Olive oil, tallow	F
Chlorinated Solvents	DCM, TCE, perchloroethylene	P

Operating Conditions

The monoblock body formed by thermally bonding 100% pure polypropylene fibres keeps its structural integrity under high differential pressure, chemical aggressiveness and temperature changes. The cartridge’s continuous operating temperature is 60 °C. The maximum operating temperature is 65 °C, at which differential pressure is limited to 2 bar. The pressure values of 3.45 bar (normal flow) and 1.72 bar (reverse flow) apply at 25 °C; the permitted pressure falls as temperature rises. Different gasket materials (silicone, NBR, EPDM, Viton, PTFE) and a micron range of 1–150 µm allow the cartridge to be adapted to a wide range of processes.

Material Suited to Chemical Environments
Stable operating performance with polypropylene (PP) material
Filter Structure Resistant to Pressure Fluctuations
Resistance Optimised for Long-Term Operation
Filtration Stability That Supports Process Safety

Nominal Operating Temperature: Optimised for continuous operation at 60 °C (140 °F).
Maximum Operating Temperature: 65 °C (149 °F) @ ≤ 2 bar differential pressure limit.
Maximum Pressure (Normal Flow): Resists 3.45 bar (50 psi) at 25 °C (77 °F).
Maximum Pressure (Reverse Flow): Resists 1.72 bar (25 psi) at 25 °C (77 °F).
Chemical pH Compatibility: Wide-spectrum tolerance in acid, base and saline solutions from pH 1 to 14.

Sealing and Connection Components

In melt-blown filter cartridge systems, sealing and mechanical integrity depend on correctly selected gaskets, O-rings, end caps and closures. Chosen with operating pressure, temperature range and chemical compatibility in mind, these components reduce the risk of leakage throughout the system and keep the filtration performance of the PP media consistent.

End Caps and Closures

In melt-blown cartridge filters, filtration quality starts with the depth media made of polypropylene fibres, but the end caps always have the final say. Thermally bonded to both ends of the cartridge, these components directly affect whether the element stays in place in the housing, whether flow moves in the right direction and how far the risk of bypass is minimised. Because the connection type, gasket material and adapter geometry differ from application to application, the right choice determines both system life and how practical cartridge changes are.

Engineering Advantage for Process Safety

Secure Connection Design
High Mechanical Strength
Process Sealing Support
Stable Operation Under Pressure
Chemical and Thermal Compatibility
Long Service Life

Melt Blown Cartridge Filter – DOE with Gasket

Melt Blown Cartridge Filter – DOE End Cap with Gasket

Melt Blown Cartridge Filter – 215 O-Ring and Fin 2

Melt-blown cartridge filter with 222 O-ring and Fin 1 end cap — Melt Blown Cartridge Filter – 222 O-Ring and Fin 1

Melt-blown cartridge filter with 222 O-ring and Fin 2 end cap — Melt Blown Cartridge Filter – 222 O-Ring and Fin 2

Melt-blown cartridge filter with 222 O-ring and flat end cap — Melt Blown Cartridge Filter – 222 O-Ring and Flat Cap

O-rings

In melt-blown cartridge filters, it matters as much that the flow stays on the right path as that it passes through the media. O-rings that keep the interface between the filter element and the housing leak-tight reduce the risk of bypass. Material choice is decisive here: a choice made without considering the chemical nature of the process fluid, the operating temperature and pressure conditions paves the way for early gasket failure or an unnoticed leak. Each of the silicone, EPDM, NBR, Viton and PTFE options is optimised for different chemical and thermal conditions; the right match both extends filter life and maintains system reliability.

High-Performance O-Ring Solutions for Process Safety

Gaskets

Gaskets are key components that support sealing at the filter element’s connection points in the system and improve process safety. Different gasket types and materials can be chosen depending on factors such as operating pressure, temperature, chemical environment and equipment design. The right gasket helps prevent fluid leaks, maintain filter performance and extend equipment life. Gasket solutions used in industrial filtration are designed to deliver reliable performance even under demanding process conditions.

Gasket Solutions That Safeguard Filtration Efficiency

NBR / EPDM flat gasket — NBR / EPDM Gasket

Green Viton flat gasket — Green Viton Gasket

Brown Viton flat gasket — Brown Viton Gasket

Teflon (PTFE) flat gasket — Teflon Gasket

Industry Applications

Filter cartridges suited to different process needs are used across a wide range of industrial applications to protect product quality, safeguard equipment and support production continuity.

1–6 / 24

01 Vegetable Oil Clarity, purity and shelf life in vegetable oil and refining. Explore solutions

02 Pipe and Profile Cooling water filtration in pipe and profile extrusion. Explore solutions

03 Paint Industry Surface quality and pigment filtration in the paint industry. Explore solutions

04 Glass Industry Furnace and process filtration in the glass industry. Explore solutions

05 Dialysis Centers Water preparation and process filtration in dialysis centers. Explore solutions

06 Foundry Industry Equipment protection and dust filtration in foundries. Explore solutions

07 Industrial Oil Filtration in industrial oil production and recovery. Explore solutions

08 Energy and Biogas Maximum efficiency and turbine protection in energy and biogas. Explore solutions

09 Recycling Filtration for efficiency and environmental compliance in recycling. Explore solutions

10 Food and Beverage Hygienic filtration in food and beverage. Explore solutions

11 Pharmaceuticals and Biotechnology GMP-compliant sterile filtration in pharmaceuticals and biotechnology. Explore solutions

12 Paper and Packaging Process water filtration in paper and packaging. Explore solutions

13 Chemical Industry Corrosion-resistant, safe filtration in the chemical industry. Explore solutions

14 Cosmetics Microbiological safety and precision filtration in cosmetics. Explore solutions

15 Machinery Precision and technical filtration in the machinery industry. Explore solutions

16 Printing and Ink Flawless color and print quality in printing and ink. Explore solutions

17 Metal and Surface Treatment Flawless surfaces and bath stability in metal and surface treatment. Explore solutions

18 Forest Products Resin and glue filtration in forest products and furniture. Explore solutions

19 Automotive Precision process filtration for zero defects in automotive manufacturing. Explore solutions

20 Oil and Petrochemicals Equipment protection and process safety in oil and petrochemicals. Explore solutions

21 Plastic Packaging Precision process filtration and raw material purity in plastic packaging. Explore solutions

22 Plastic Injection Molding Cooling and hydraulic filtration in plastic injection molding. Explore solutions

23 Water and Environment Recovery filtration in water and environmental technologies. Explore solutions

24 Shipyards and Marine Operational safety and efficiency in shipyards and marine. Explore solutions

TECHNICAL ASSESSMENT BASED ON FIELD EXPERIENCE

Engineer's Note

Melt Blown (Sediment) Depth Filtration and Material Safety

Thanks to their graded depth structure, our melt-blown filters show effective pre-filtration performance especially with fluids carrying a high particle load. In our field experience, the most common mistake is delaying replacement after the filter has reached saturation (ΔP > 2.4 bar). For ideal efficiency, we recommend that system flow does not exceed 70% of the filter’s capacity.

When should it be chosen?

They should be chosen for processes with a high sediment load and a wide particle size distribution, and for systems that protect fine final filtration.

Critical Warning If the filter is not fully seated during installation, there is a risk of bypass. In DOE models, make sure both end gaskets of the cartridge seat fully in the housing seats. Incorrect installation can seriously reduce filtration efficiency.

Application and Selection Criteria

Pre-Filtration Requirement: Pre-filtration is essential with a high particle load; it delays clogging of the melt-blown cartridge and extends the change interval.
Pressure Gauge & Differential Pressure Monitoring: Check the pressure gauges weekly and plan cartridge replacement when the differential pressure reaches 2.0–2.4 bar.
Gasket and Elastomer Maintenance: When changing gaskets, use only pure silicone grease to preserve the elastomer's life and chemical resistance.

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Your Questions Answered

Frequently Asked Questions

At Prosestim, we are committed to answering your questions and providing technical support for our filtration solutions.

What is the difference between a melt-blown filter and a pleated micro filter, and which should be chosen?

Melt-blown (a depth filter) is ideal for pre-filtration of fluids with a high particle load; because it holds dirt throughout its depth, it offers high capacity. A pleated micro filter, on the other hand, offers a longer service life thanks to its large surface area and is preferred at the final filtration stage. The two filters are often used in series: melt-blown provides pre-protection and the pleated filter the final cleaning.

When should the filter be replaced, and how can I tell?

Plan replacement when the differential pressure (ΔP) reaches the 2.0–2.4 bar range; the 2.4 bar limit must not be exceeded. Weekly gauge checks are recommended. Without pressure monitoring, you cannot tell whether the cartridge has passed its saturation point; this both lowers filtration quality and creates a risk of bypass.

In what pH range do PP melt-blown filters operate?

It is well suited to water, organic acids, dilute inorganic acids and bases. Its resistance to concentrated strong inorganic acids (H₂SO₄, HCl) and oxidisers (H₂O₂, hypochlorite, ozone), however, is poor; before using it with these chemicals, reviewing the chemical compatibility table and consulting our engineers is recommended.

How is flow rate affected as the micron rating gets smaller?

As the micron rating gets smaller, the pressure loss at the same flow rises. For example, on a 10″ cartridge at 40 L/min of water the initial pressure loss is about 0.106 bar at 1 µm, 0.091 bar at 5 µm and 0.037 bar at 25 µm. The micron rating should therefore be planned together with system capacity and the target flow rate.

Can filters with different micron ratings be fitted in the same filter housing?

Yes, cartridges with different micron ratings can be fitted in the same filter housing as long as the connection type and size match. This makes it easy to change the filtration stage according to process requirements. However, as the micron rating gets smaller, initial pressure loss rises and change frequency increases; system flow should not exceed 70% of the filter’s capacity.

What is the practical effect of having or not having a support core?

Prosestim melt-blown cartridges are made without a core; melt-blown filters have no support core. The graded-density fibre matrix is self-supporting. This design gives a higher void volume than cored alternatives and increases dirt-holding capacity per unit volume. In systems operating under high differential pressure, observing the replacement ΔP limit and avoiding pressure fluctuations preserves the cartridge’s form.

What is the difference between nominal and maximum operating temperature?

Prosestim melt-blown cartridges are suitable for continuous operation up to 60 °C (nominal operating temperature). The maximum operating temperature is 65 °C, at which differential pressure is limited to 2 bar. The pressure values of 3.45 bar and 1.72 bar in the table apply at 25 °C; the permitted pressure falls as temperature rises, and high temperature combined with high pressure causes structural damage.

How does incorrect installation affect filtration efficiency?

If the filter does not seat fully in the filter housing, a bypass channel forms. In DOE models, if both end gaskets of the cartridge do not seat fully in the housing seats, filtration efficiency can fall seriously. Checking gasket contact after installation and using silicone grease is recommended.

What do more than 3,400 variations mean, and how is the right configuration for my needs determined?

Combinations of length (5″–40″), micron rating (1–150 µm), connection type (DOE/SOE, 215/222/226, flat/Fin 1/Fin 2) and gasket material (silicone, NBR, EPDM, Viton, PTFE) create more than 3,400 configurations. When you share the process fluid, operating temperature and filter housing type, our technical team determines the right configuration; for standard orders, a quote is sent within 24 hours.

Box Dimensions

335 × 410 × 560 mm: Capacity: 30 pcs per carton for 20" / 60 pcs per carton for 10".
335 × 410 × 810 mm: Capacity: standard packing of 25 pcs per carton for 30" cartridges.
335 × 410 × 1055 mm: Capacity: standard packing of 25 pcs per carton for 40" cartridges.

Shipping Note: 10-inch cartridge filters are shipped securely in 20-inch boxes, packed in two layers.

Fast Quote & WhatsApp Consultation

Melt Blown Cartridge Filter RFQ Configurator

Configure your variation dimensions and technical specifications to receive an instant quote directly on WhatsApp and via email.

1 Select Variation Type

2 Dimensional & Technical Specifications

Filter Length: 5 Inch

5 Inch 40 Inch

Micron Rating: 1 Micron

1 Micron 150 Micron

Filter Diameter / Format:

Gasket Type:

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