Liquid Filtration

Liquid Filter Cartridges made with Ultra Fine Fiber “Nanofront®”

“It’s the game changer.
Our Ultra Fine Fiber “Nanofront®” revolutionizes how filtration works.”

By transforming ultra-fine fibers with diameters of 400 nanometers and 700 nanometers into extremely thin sheets through the Paper Making Process, we achieve a delicate pore structure, enabling a highly effective dust collection capability. The uniform fiber diameter allows the realization of fine pore structures with minimal fabric weight, proving effective in the filtration of gel-like substances.

packaged goods

Controlling fiber diameter ensures a precise pore size distribution, minimizing pressure drop whilemaximizing filtration efficiency.

Core Material Technology


Precise Short Cut Fiber

Teijin Frontier, a global leader with Polyester short cut fibers for papermaking, has successfully developed nanofibers tailored for optimal performance in liquid filter media.


Paper Manufacturing

Filter media from paper manufacturing, widely used as support for RO, UF, and NF membranes, excels in customizable pore size distribution, offering a solution for diverse filtration needs.


Customizable Filter Media

Our Matsuyama Research Institute possesses a wide variety of testing equipment essential for developing tailored filtration solutions across various industries.

Product Lineup

Products List
Filtration Type Material Filtration accuracy Online Order
Pleated type Polyester 0.5μ
Pleated type Polyester 1.0μ
Pleated type Polyester 3.0μ
Pleated type Polyester 5.0μ
Pleated type Nylon 0.5μ
Pleated type Nylon 1.0μ
Pleated type Polypropylene 1.0μ
Pleated type Polypropylene 3.0μ
Depth type Polyester 1.0μ
Depth type Polyester 3.0μ
Depth type Polyester 5.0μ
Depth type Polyester 10.0μ
Depth type Polypropylene 1.0μ
Depth type Polypropylene 3.0μ

What’s our innovation?

Innovation1 : “STARTS AT YARN STAGE”

Teijin’s proprietary “Island and Sea Splitting Fiber Technology” is utilized to apply ultra fine fiber manufacturing techniques at 200nm, 400nm, and 700nm to liquid filter cartridges.

Nanofront® (Ultra Fine Fiber)
Diameter 700mm
Nanofront Diameter700mm
Diameter 200nm
Cross Surface

Cross Section

Diameter 400nm
Cross Surface

Cross Section

Diameter 700nm
Cross Surface

Cross Section

Innovation2: “ULTRA-THIN FILTRATION MEDIA, Nanofront®”

Produced through wet laid papermaking, we uniformly disperse short cut ultra fine fibers (200nm, 400nm, 700nm) in water. This method creates an exceptionally thin filter with fine, sharp pores, contrasting with the meltblown process. Fibers are thermally bonded without the use of adhesives.

a close-up of a metal grate
nanofront logo
* Porus is smaller
background pattern
Porous distribution(0.5μm)
chart, line chart
* Very sharp Porus distribution



Varied fiber diameter and blend ratio in the combination of nanofibers and microfibers enable precise pore size control, creating a high-porosity filter material.

zoomed Filter
Dust dispersed evenly throughout the structure to prevent clogging

No clogging with

  • Highly Concentrated Dust
  • Gelatinous Materials
  • High Viscosity Materia

Utilizing uniformly sized ultra fine fibers in high concentration results in Capturing low-concentration (ppm-level) foreign particles.

zoomed Filter
Surface Filtration

Gels or condensed particles accumulate on surface and cause blockage.

Long life with

  • High filtration precision due to a sharp pore size distribution
  • High flow rates enabled by low thickness and curvature

Case Studies

Case Study1: High-Concentration Slurry

Filtering High-Concentration Slurry always faces challenges arising from insufficient porosity and a lack of filtration precision, leading to issues such as clogging and a reduced lifespan.

The proposed solution involves implementing a groundbreaking filter designed to effectively eliminate coarse particles ranging from several hundred nanometers to as small as several tens of nanometers in slurries.

Fluid Filtration

  • CMP Slurry
  • Polymer
  • Solvent

Our Solution

Dual Structure, combining “PRE FILTRATION (DEPTH TYPE)” and “FINAL FILTRATOION (PLEATED TYPE)”, optimizes the filtration of high-concentration slurry.

■Dual Structure cartridge filter
■Filtration Performance
Capture 0.45µm particle Capture 0.20µm particle
PET 0.45µm 97%
PET 0.30µm 97% 50%
PVDF Membran 0.22µm 97% 60%
Conventional 0.45µm 97% 10%
Conventional 0.20µm 97% 15%

【Testing Condition】
Material: Silica, Filter Size: 47mmφ, Pressure: Decompression 0.072Mpa, Test Drive: Liquid particle counter

■The removal performance of coarse particles
Lifetime chart of fine particle 450nm coarse slurry
“Lasts double the lifespan of the membrane”
Light scattering PVDF Membrane 0.22μm
Light scattering Nanofront 0.45μm
“The peak on the coarse particle side disappears after filtration”

Case Study2: Fine Chemical

Filter designed for the removal of undissolved particles and gelatinous impurities generated during the manufacturing of chemical substances.

Water-based emulsions

  • Binder for batteries
  • Adhesives
  • Color filter ink

Our Solution

By stacking filter media with a gradual pore size/pore space gradient, achieving high collection efficiency and long lifespan is possible. Additionally, it results in low-pressure loss during filtration, preventing the push-out.

■Engineered multi-layered filter
Conventional filter
Engineered multi-layered filter

A groundbreaking filter incorporating a stacked arrangement of filter media with a gradual variation in pore size achieves high collection efficiency and prolonged lifespan. It ensures low-pressure drop filtration and prevents push-through phenomena (passage of foreign particles).

a group of beakers with liquid in them

A smooth transition in pore size or gaps greatly improves the effectiveness of filtering gel-like substances and tiny particles.

■Filtration Performance

For gelatinous materials and small particle,

Time to Reach Long Lifespan (100Kpa)
“Extend the cycle of filter replacement”
AC Fine Dust Collection Efficiency(%)
Gelatinous Material Collection Efficiency(%)
Testing Condition
  • Untreated Water: Gel Solution / Methylcellulose 500ppm, Powder / AC Fine Dust 100ppm
  • Dispersing Medium: Water
  • Cartridge Size: 250mm
  • Flow Rate: 10L/min
  • Test Drive: Liquid Particle Counter
“As soon as installed, achieves higher dust collection efficiency”

Case Study3: Metal Adsorption

Suitable for filtering resist liquids and etching solutions used in the semiconductor processing lithography.

The challenges of metal adsorption filtration include the removal of particles, bubbles, and metallic contaminants that can cause surface defects in resist patterns. The elimination of metal contamination is crucial to prevent electrical performance issues, requiring reduction to ppb levels. High metal ion adsorption performance is essential for effective filtration.

Our Solution

Through our specialized cleaning techniques, a high-purity nylon filter media with extremely low levels of metallic and organic impurities can be achieved. The surface of the nylon filter media contains a minimal amount of adsorbed water, exhibiting a significant negative charge (zeta potential). This strong negative charge is expected to enhance the adsorption effect for positively charged species such as metal ions and proteins).

■Zeta Potential at surface on Nanofront® Filter Media
Zeta potential at the surface (mV)
Maintains higher Zeta potential to prevent aggregation, sedimentation, and flocculation
Flow Characteristics
  • Liquid: Purified Water
  • Length: 250mm
Filtration Efficiency
  • Liquid: Purified Water
  • Length: 250mm
  • Flow Rate: 10L/min
  • Particle: ACFTD
■Special cleaning technology achieves extremely low levels of metals and organic contaminants
Metal Leaching Amount
  • Extraction Condition: Soaking one 10-inch cartridge filter in 1.8 liters of ultrapure water
  • Measurement method: After immersing for 24 hours at room temperature, collect ultrapure water for ICP analysis
Metal leaching from the 10-inch cartridge filter
Amount of IPA (Isopropyl Alcohol) leachate (organic compounds)
  • Extraction Condition: Soaking a 500 cm2 filter sheet in 300 mL of isopropyl alcohol at 20°C for 24 hours
  • Measurement method: Measure the weight of the residue after evaporating the solvent
Sample Metal Leaching Amount (mg/m2)
Low-extractable nylon cartridge filter 76

【Testing Condition】
Tested Filter :TNN005 Material: Nylon6 Cage Material:Polyethylene Filtration Efficiency: 0.5μ

Target Industries


Fluid Filtration (Polymer, Solvent, CMP Slurry)

Optical film/ Panel (Anti-reflection, polarizing protective film, Functional Film) Polymer Formulation, Coating, Cleansing


Glass substrate, Disc media polishing, Cleansing, Driving parts Bearing motors, Grinding, Polishing


Substrate Polishing, Cleansing, Color Filter / TFT Resist coating development and peeling


Internal electrode, dielectric Raw Materials grading, Solvent Resin Paste Filtration


Body, Electronic Components

Bearing grinding, Cleansing, Painting, Washing, Coating



Amino acid, Isomerized Sugar, Beer, Alcohol, Soft Drink, Lotion Milky lotion Shampoo, Conditioner, dental paste


High Viscosity Paste/ Slurry

Paint, Ink, Photosensitive emulsion, Surface modifier, Paste,Slurry, Solvent