FILTER CLOTH

A critical role to elicit performance of
machines to the fullest

;

Filters are required by various items for various purposes. 
For everyday life, they are used in vacuum cleaners and air conditioners, and for industrial use, in beverage, food, chemical, water treatment, and iron-making facilities.

Filters and our lives are inseparable because they fulfill a critical role in eliciting the best possible performance from machines or devices.

By making full use of our filter cloth manufacturing technology and experience, we would like to satisfy our customers (to put a smile on our customers' faces) by solving their problems.

We offer a thorough and complete service, where we take care of all steps of production, from weaving the fabric to processing it. This enables us to manufacture various kinds of filter cloth for a variety of industries.

Filters are essential in various industries

“We had no idea that filter cloth could be such a huge improvement to our equipment!”

For whatever your purposes may be, we take care of the whole manufacturing process ourselves, from choosing the materials to weaving the cloth!

This is what we often hear from our customers. 
Filter cloth is not familiar to ordinary people. We can offer you advice and make suggestions about which filter cloth best suits your needs, based on our vast experience as professionals.

Some customers use unsuitable filters which don't match the specifications of their machines or devices. You might think that this never happens, but it does. As ought to be expected, unless machines and filters are optimally matched, they cannot demonstrate the full extent of their ability. 

Don't you find this is a waste of your precious resources?

The life of filters can be easily extended through improvement of quality. The longer the life of a filter, the fewer times you will need to replace it, which leads to better work efficiency. 

The more we know about your filter needs in terms of water quality, specifications of your equipment, use conditions, and so on, the better filters we can offer. We can manufacture your own custom-made filters which last the longest, and elicit the best performance from your machines. 

Filters are unfamiliar products to ordinary people, so it may be difficult to search for information about them.

We will live up to your expectations.

Cutting and sewing filter cloth according to specifications of machines

PRODUCT

There are a great variety of filters. There exist filters which perfectly suit any environment, such as your filter unit, separator, or the quality of the water, depending on where they are used. In this section, we will showcase our inventory of filters for filter units and separators, including our specialty, filters for filter presses.
Other customization options are also available, so please feel free to contact us.

  • For filter press

    Filters for filter presses are the most common and we consider them to be our forte. These are pressurized filters, which are relatively easy to handle and are suitable for use at plants that treat a large amount of wastewater.

    While they are easy to handle and use, there are filters which may easily cause problems, such as not matching the specifications of their machines or devices.

  • For centrifugal separators

    While filter presses are suitable for a large amount of filtration, the type of filter best suited for a small amount of filtration is the centrifugal. These devices pressurize using centrifugal force or gravity. There are two kinds of centrifugal separators: one is a top-discharge centrifuge, and the other is a top-drive, bottom-discharge centrifuge.

    Filters for these devices are used at small-scale factories, as well as ones which deal with special or unique products.

  • For drum vacuum dehydrators

    The most distinctive feature of dehydrators is that they are available for continuous operation. Drum vacuum dehydrators are of the pressure reduction type, and are best suited to filtering small quantities of material which contain fine particles.

    It is essential to choose and use the filter which is optimally suited for the quality of water you are dealing with.

  • For candle filters

    These types of filters are, as the name suggests, in the shape of a candle. They are used in vertical sealed pressure separators. These devices are often installed at assembly lines in chemical plants, or used for desulfurization

About Filter Cloth Materials

Materials
Conditions
Nylon Polypropylene Tetoron(R) Nomex Nylon(R) Cotton Teflon(R) Glass
Heat Resistant
Temperature
120 80 150 170 100 200 270
Acid
Resistance
× ×
Alkali
Resistance
× ×
Wear/Abrasion
Resistance
more resistant    less resistant

◎ = very high, ○ = high, △ = depending on condition, × = not available

The above materials are generally used.
Other materials are also available at your request.

The Type of Yarn and Weave Patterns

  • Mono-filament Yarn

  • Multi-filament Yarn

  • Span Yarn

  • Plain Weave

  • Twill Weave

  • Satin Weave

The Characteristics of Yarn and Weave Patterns

Types of Filter Cloth / Filterability
Ability to
Trap
Particles
Filtrate
Amount
Plugging
Resistance
Detachability Wear
Resistance
Yarn Design Span Yarn
Multi-filament Yarn
Mono-filament Yarn
Weave Patters Plain Weave
Twill Weave
Satin Weave

◎ = very high, ○ = high, △ = depending on condition, × = not available

TECHNOLOGY

Special Technology:
Ohtsuka Calendaring

This technology can process and finalize various kinds of filter cloth by running cloth through huge rollers and adjusting the heat and pressure.

In the fiber industry, priority has been given to speed and mass production.

However, we have always placed great importance on quality, as filters require precision.
Our own policies, experience, and know-how have enabled us to transform even just one kind of cloth into a wide variety of cloths by finalizing it with a previously unimaginable subtle adjustment.

Normally, when we require slightly finer, thinner filters, we have no choice but to start from scratch: selecting yarns, weaving cloth, and making filters. This requires several months, as well as a large shipping order. 

However, this technology makes it possible for us to offer you products more quickly, and in much smaller quantities.

photomicrograph of calendared filter cloth

sizing

When processing or finalizing cloth for filter presses or centrifuges, holes are opened up in the cloth by the needle of a sewing machine, which can cause our painstakingly selected filtration cloth to lose its effectiveness and allow particles to escape through.

In order to avoid this, our company, working alongside resin manufacturers, instead co-develops various types of resin, and we apply the resin suitable for your needs and purposes to the filter cloth. 

Type of
Resin
Characteristics Heat Resistant
Temperature
For food
-related use
S high flexibility/high smoothness/low adhesion 200℃
V high sealing efficiency/high adhesion 40℃
H high adhesion/resin gets firm 80℃
M high endurance/high adhesion/high sealing efficiency 150℃ ×
U high adhesion 80℃
N high endurance 120℃

○ = available, × = not available

COMPANY

We manufacture the products entirely by ourselves, from weaving to finalizing the filter cloth, so this enables us to produce filters for various types of industries and trades.

The city of Ashikaga, Tochigi prefecture, is located in an area known as “Higashino Nishijin”.

The exterior of the factory at Headquarters

We are a manufacture that specializes in the full scale manufacture of filter cloth, from weaving to processing the cloth.

We are also able to make proposals based on our extensive experience.

The interior of the warehouse at Headquarters

MANAGEMENT
PHILOSOPHY

Our Creed
We will bring happiness and smiles to all people who come in
contact with our company.
So as to accomplish this, we will endeavor, through our enterprise,
to create an inclusive work environment where anyone, including
those with disabilities, can flourish and be successful. We will make
the most use of our skills and experience in order to discover the
true untapped potential of our employees and our business, and
protect the environment and nature. We will pass this down to posterity.

Our Creed We will bring happiness and smiles to all people who come in contact with our company.So as to accomplish this, we will endeavor, through our enterprise, to create an inclusive work environment where anyone, including those with disabilities, can flourish and be successful. We will make the most use of our skills and experience in order to discover the true untapped potential of our employees and our business, and protect the environment and nature.
We will pass this down to posterity.

MESSAGE

Have you ever heard of the term “filter cloth?” I imagine that when you hear “we are a filter cloth manufacturer”, you wouldn't really have any idea what that constitutes.

How about just the term “filter”? That sounds more familiar, doesn't it? The function of a filter is to remove, weaken, or separate a certain substance from a given object. Filters made from fibers are called “filter cloth”.

That's right, it's the same as how filters made from paper are called “filter paper”. OHTSUKA JITSUGYO Co.,Ltd. is a company that handles the cloth weaving process itself, and delivers processed filter cloth to our clients exactly as per their technical specifications. Needless to say, because the weaving process is done in-house, we also produce and deliver a wide variety of other materials beyond just filter cloth.

Now, can you imagine how and where our filter cloth is used? One of the most familiar examples might be the process of creating Japanese sake known as “shibori”.

Raw, unrefined sake is put into a bag and is pressed. The bag used in this process is made from filter cloth. Today, sake is usually pressed with machines, and we produce the filter cloth to be used in those machines.

Not limited only to sake, filter cloth is used for a variety of other purposes, such as: edible oil, printer toner material, battery material for cell phones and hybrid cars, water treatment at plants, water and sewage service, and so on. 

In most cases, filter cloth is installed in and used for machines, where it plays an important factor in demonstrating the performance and ability of the device. You might have few chances to see filter cloth for yourself, and it might be hard to truly understand its role. Unseen though it may be, it plays a critical role in supporting the daily lives of people everywhere.

We at OHTSUKA JITSUGYO Co.,Ltd. think of filter cloth, an item that so often goes unnoticed, as a helpful product for many people. We work hard on product development, technological innovation, and improved efficiency so as to better meet our customers' needs, and we aspire to become a company that contributes to society and the welfare of people all around the world. 

Achieving such grand goals is no doubt challenging, but I believe that each of us can start by being more aware of people around us, and finding ways to make them smile.

I think that we should cooperate with all people who come in contact with our company and pursuit the same goals, little by little, and make steady progress. In the future, I also hope that we will become an enterprise which can assertively tackle greater problems, such as pollution and water issues in developing countries, and thereby contribute to the well-being of the earth.

代表取締役 社長 大塚雅之

Asia Golden Star Award 2017 hosted by AEEF-J

Our company received five awards:
Master AwardEnterprise AwardEntrepreneur AwardProduct Award
and Social Contribution Company Award

Asia Golden Star Award 2017 hosted by AEEF-J

COMPANY
PROFILE

Company Name
OHTSUKA JITSUGYO Co.,Ltd.
Date founded
March 6, 1973
Capital
16 million yen
Head Office/ Head Factory
1745-1 Fukuicho Ashikaga-shi Tochigi, 326-0338
TEL:+81 (0)3 3252-9831
Tokyo Branch Office
Eruhen Building 2-4-8 Kajicho Chiyoda-ku Tokyo 101-0044
TEL:03-3252-9831/FAX:03-3252-9833
Hamamatsu Factory
183 Nazukacho Naka-ku Hamamatsu-shi Shizuoka 430-0811
TEL:0534-61-4593/FAX:0534-61-4596
Osaka Sales Office
Kurosawa Building 4F 1-10-15 Higashi-Temma Kita-ku Osaka-shi Osaka 530-0044
TEL:06-6949-8697/FAX:06-6949-8698

ACCESS MAP

  • 【Head Office/ Head Factory】
    1745-1 Fukuicho Ashikaga-shi Tochigi, 326-0338
    TEL:+81 (0)3 3252-9831
  • 【Tokyo Branch Office】
    Eruhen Building 2-4-8 Kajicho Chiyoda-ku Tokyo 101-0044
    TEL:03-3252-9831/FAX:03-3252-9833
  • 【Osaka Sales Office】
    Kurosawa Building 4F 1-10-15 Higashi-Temma Kita-ku Osaka-shi Osaka 530-0044
    TEL:06-6949-8697/FAX:06-6949-8698

Contact us to consult

+81 (0)3 3252-9831Business hours: weekdays 9:00 a.m.-5:30 p.m.