Fewer gels. Longer runs. Filters that fit the housings you already have.
DENAFILTER stainless steel leaf disc, candle and pack filters hold about half of the global optical film filter market. Now they're available to film, resin and fiber producers across the US and Canada.
~50%
Share of the global optical film filter market
3–60 µm
Standard filtration grades, with custom grades available
4" to 12"
Leaf disc sizes, compatible with most housings
ISO 9001
Designed and built by Nagase Filter in Japan
WHERE DENAFILTER FITS
When a single gel or particle can scrap a roll
DENAFILTER removes gels, black specks and foreign particles from polymer melt before they reach your die. It's the filter of choice where quality specs leave no room for error:
Battery separator films for EVs and energy storage
Semiconductor and electronic materials
PET, nylon and polycarbonate resin and fiber
Pelletizing and re-pelletizing lines
PRODUCTS
Filters and components for the whole system
WHAT YOU GET
Built to run longer and clean up faster
DENAFILTER leaf discs are made to match the dimensions of other manufacturers' filters, so switching doesn't mean re-engineering your line.
Patented TP and CS retainers channel melt toward the center post, cutting pressure drop and extending time between change-outs.
Sintered nonwoven metal fiber media captures deformable gels through depth filtration. Sintered wire mesh is available where you need surface filtration.
304 and 316L stainless steel resists corrosion and holds up to high-temperature, high-pressure service, cycle after cycle.
A simplified hub design reduces the dead space where residue collects.
All-metal filters are cleaned and reused, so you buy fewer elements over the life of the line.
PERFORMANCE EXAMPLE
Lower, flatter pressure drop in a polyolefin film line
Results are from Nagase Filter's internal simulations and testing and are not a guarantee of performance under your operating conditions.
AT A GLANCE
Specifications
- Overview
- Filter Size
- Filtration Area
| Item | Leaf Disk Filter | Candle filter | Pack Filter |
|---|---|---|---|
| Filtration area | Excellent | Excellent | Poor |
| Strength | Excellent | Good | Good |
| Maintenance | Good | Good | Excellent |
| Filter life | Excellent | Excellent | Poor |
| Cost | Good | Good | Excellent |
| Cleanability | Excellent | Good | N/A |
| Main applications | High-precision filtration film | Pelletization and fiber production of low viscosity resins | Coarse filtration accuracy |
Sintered Nonwoven Fabric Media Grade Chart
*98% particle capture size by single-pass test
| mm | 4 inch | 5 inch | 7 inch | 8 inch | 12 inch |
|---|---|---|---|---|---|
| OD | 111 | 149 | 177 | 222 | 304 |
| ID type A | 38.1 | 38.1 | 47.6 | 47.6 | 63.5 |
| ID type B | 47.6 | 47.6 | 63.5 | 63.5 | 76.2 |
| ID type C | - | - | - | 76.2 | 85.2 |
| ID type D | - | - | - | - | 115.5 |
| cm² | 4 inch | 5 inch | 7 inch | 8 inch | 12 inch |
| ID type A | 171 | 326 | 457 | 739 | 1,388 |
| ID type B | 158 | 313 | 429 | 711 | 1,360 |
| ID type C | - | - | - | 683 | 1,338 |
| ID type D | - | - | - | - | 1,242 |
Oil & Gas
The same sintered metal filter technology that protects precision film lines, engineered around your fluid, pressure and temperature.
SERVICES
Beyond the Filter
Run a lab-scale filter system at your plant and see the results on your own material.
Send us your resin. We run it on a small extrusion line with DENAFILTER leaf discs and an inline defect detector in a clean environment, then share the data.
We model dead space, wall shear and temperature in your filter system to recommend the right retainer and media.
Cleaning Services
We perform cleaning for all metal components, including metal filters. Regenerative cleaning enables metal component reuse and waste reduction. With our powerful cleaning equipment and years of cleaning experience, we have developed the expertise to clean various components effectively.
Made to Fit
DENAFILTER filters are made to match other manufacturers' dimensions. Tell us what you run today — housing, filter size and media grade — and our engineers will recommend a direct replacement.
ABOUT NAGASE
Japanese filter engineering, with support for North American plants
DENAFILTER is designed and manufactured by Nagase Filter Co., Ltd., a wholly owned NAGASE company, at its Higashiosaka and Fukui plants in Japan. NAGASE supplies materials, process technology and equipment to film, plastics and electronics manufacturers worldwide, with sales and technical support for customers across the US and Canada.
In most cases, yes. Our leaf discs are made to match other manufacturers' dimensions. Send us your current specs and we'll confirm.
Standard nonwoven grades run from 3 to 60 µm, pack filter media from 1 to 80 µm, and wire mesh is available. We also build custom grades.
Yes. DENAFILTER ships to customers throughout North America.
****[Confirm with Denafilter.]****
Yes. Ask about DENALAB rental units or DENALYZER contract testing on your resin.
Talk to a DENAFILTER engineer
Share your current filter and quality target information with us in the comments section and a DENAFILTER Specialist will follow up with you shortly.