Protect Your Loved Ones

Medical Grade Masks and Filter Sheets
*A mask and filter sheet that catches pollen,
fine dust and viruses effectively!
*N95 level original nano fiber used


made in

3D Nano

Opens Up Infinite Possibilities of Filtration

An Ultimate Filter Made From
Ultra-Fine Nanofiber Material

What can our filters offer you?

High capacity,
Ultra-fine filtration,
Unobstructed breathing capabilities

Using Nanofibers manufactured by our patented production process, YAMASHIN has developed a unique specialized mask which provides protection from invisible airborne particles, allowing the user to breathe comfortably for long periods of time while maintaining excellent filtration performance.
Most disposable non-woven masks fail to provide protection on a microscopic level as the mask cannot filter out microparticulate harmful contamination matter such as PM 2.5 and viruses.

Having originally developed filtration technology for construction machinery, YAMASHIN filters collect Nano-sized particles. YAMASHIN NANO FILTER® maintains high efficiency for a long time so oil can pass through freely, lubricating and protecting the machinery.

"Like a Breath of Fresh Air in a Green Forest"

As leading experts in the filtration industry, YAMASHIN-FILTER CORP. masks and sheets have the ability to stop harmful particles and viruses from passing through them.
Our Nanolevel material research and proven reputation in oil and hydraulic filter products, has allowed us to supply over 70% of the construction machinery sector with filters and advanced filtration technology. (Reference. Yano Institute of Economic Research).
Our unique technology, gained through 65 years of research and development, is now being used in mask products for everyone who wishes to be remain healthy.

Technical Capabilities

Decorative and Cloth Masks Cannot Provide
Fine Particle Filtration like the Ultimate YAMASHIN Filter Mask™


While some disposable masks available for general hygiene purposes may have antibacterial properties, these masks do not filter out nano-level particulate contamination. This means these masks cannot filter out fine dust and viruses over a sustained period.

Using filtration materials made from the finest Nano fibers, masks and filters made by YAMASHIN can prevent even the smallest particles such as dust, pollen and viruses from entering the respiratory system.

Nano level fig

Nano level fig

YAMASHIN-FILTER CORP. masks and sheets
developed using world-class technology

Feature 1

"The ability to stop invisible
contaminates using a multilayer
3D filtration system"

The synthetic fibers in conventional disposable masks use a rough mesh to trap dust and viruses using an electrostatic charge. Ultimate YAMASHIN Filter Masks™ and Ultimate YAMASHIN Filter Sheets™ use complex technology featuring Nano level three-dimensional structures providing superb filtration performance. By weaving Nano fibers using our patented technology our masks can trap viruses more consistently over long periods of time. This Nanotechnology, developed by YAMASHIN, is so effective that it can be used in the medical field.

Comparison of Collection on
Differing Structures

differing structures

Performance Degradation
over 24 hours

* Based on in-house evaluation results (measurement: particles 0.3 µm)

Performance degradation

Feature 2

"Mask users are kept safe and protected with performance
lasting over 24 hours"

Most commercially available masks use static electricity to capture dust and viruses. Due to the buildup of moisture within these masks, performance drastically decreases over time. Our research has shown that this can be up to 65% over a 24-hour period. As Ultimate YAMASHIN Filter Masks™ rely on fibers that capture particles on a Nano level, filtration performance is only decreased by 9% over the same period.

Performance Degradation
over 24 hours

* Based on in-house evaluation results (measurement: particles 0.3 µm)

Performance degradation

Feature 3

"Upgrade your mask with
Ultimate YAMASHIN Filter Sheets™ to
improve performance"

Antibacterial inner sheets used with general commercial masks and disposable mask filtration efficiency can be improved. The Ultimate YAMASHIN Filter Sheet™ can be used with a variety of different masks and has superior filtration performance; catching the smallest of particles.

Performance test
with Ultimate YAMASHIN Filter Sheets™

* Based on in-house evaluation results
(measurement: particles 0.3 µm)

Performance test

made in Japan

Feature 4

"Ultimate YAMASHIN Filter Mask™
and Ultimate Yamashin Sheets™ are
100% made in Japan by a company
established for over 65 years"

Around 80% of the general masks currently sold in Japan are produced overseas, which can lead to supply and quality issues. 100% of Ultimate YAMASHIN Filter Masks and Ultimate YAMASHIN Filter Sheets™ are produced domestically at our own factory in Saga prefecture. With our state-of-the-art machinery, and experience in manufacturing high performance filters for construction machinery, we have realized the distinguished production system of high grade nanofiber to meet our strict quality control standards.

Made in Japan


YAMASHIN NANO FILTER® Performance Comparison

The performance test carried out by the YAMASHIN R&D development division proves the ability of masks to prevent fine dust passing through the filter.
Performance of YAMASHIN products were compared with those of other available brands. (April 26th, 2020)


Comparative Experiment

Filter Mask™
N95 Mask*1 Disposable
Cloth Mask
Sample 1
Mask Only
Result 1 Almost
to dust
to dust
to dust
to dust
Sample 2

Result 2 Almost
to dust
to dust
to dust
to dust

*1 The "N95 Mask" is a mask that has been certified and meets the standards set by the National Institute of Occupational Safety and Health (NIOSH) (more than 95% of 0.3 µm particles are captured)

Video: Demonstrating how well dust blown into each mask was filtered out.
Implementation conditions: Diameter: 1 µm, Wind speed: 2.6 m/s (Adult breath speed: 10 m/s), Dust composition: Smoke dust created by vaporizing glycol with heat.

Experimental Result

Disposable masks and Ultimate YAMASHIN Filter Mask™ and Ultimate YAMASHIN Filter Sheets™
Results of
comparative tests

YAMASHIN Filter Mask

Ultimate YAMASHIN Filter Mask™ meet
filtration performance
of N95 masks

*Based on in-house evaluation criteria.

YAMASHIN Filter Sheets

Ultimate YAMASHIN Filter Sheets™ used
inside of disposable or cloth masks
increase filtration efficiency

Benefit 1

The uniquely developed
Nano filter is

the difference in

The difference in filtration lies within the unique Nano Filter technology developed by the world leading specialist filter manufacturer YAMASHIN-FILTER CORP. The Ultimate YAMASHIN Filter Mask™ and Ultimate YAMASHIN Filter Sheets™ ability to capture particles is overwhelmingly superior when compared to other commercial disposable masks.

Benefit 2

The majority of regular disposable masks

do sufficiently capture particulate contamination

Blocking pollen and fine dust can make day to day life more comfortable, however, trapping viruses is the type of prevention that truly maintains your health. This is especially important for those working on the front lines in the medical field.

Benefit 3

To ensure safety
and security
our products are

100% made in Japan

The filters are domestically produced in our own factory in Japan under the strictest quality control measures. This ensures that YAMASHIN filters can prevent impurities contaminating the product during the manufacturing and transportation process.

Nano fiber

Development Capabilities

Protecting Longevity

YAMASHIN NANO FILTER® was originally developed as a new material for hydraulic filter, but it is an extremely flexible product with a variety of other applications such as heat insulation, soundproofing and air filtration.

Nano fiber

YAMASHIN filters use Nanofiber technology, which is continually being developed with the latest research. We offer a wide range of innovative products to support our customers.