We develop and supply high-performance products designed to create clean environments in a wide range of settings, including buildings, subways, amusement facilities, factories, and medical institutions.
Internationally, we collaborate with Freudenberg Group to provide global supply solutions, with main focus on the Asian market.
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Air Filter Q&A
What is nonwoven fabric?
Nonwoven fabric refers to a sheet-like material that is not woven, as the name suggests. It is a type of material that combines concepts from paper and felt with advanced technologies in organic and polymer chemistry. Depending on the application, various synthetic fibers and other materials can be combined to freely design physical and chemical properties. Japan Vilene’s air filters are made from nonwoven fabric.
What are the characteristics of nonwoven fabric filters?
Nonwoven filters have a porous structure. By combining fibers and adhesives, the pore size can be controlled and selected according to the application. They feature an optimal “density gradient” structure for air filtration, where the density increases from the air inlet side to the outlet side. This allows for low pressure loss, high filtration efficiency, and large dust-holding capacity. (Note: Some product types may not have a density gradient.)
How should I select an air filter?
Filter selection should consider the air conditioning system, operating conditions, and relevant regulations. Key factors include:
- Purpose of air purification
- Intake air volume and dust concentration
- Circulated air volume and dust concentration
- Room usage
- Fan capacity
- Filter performance
- Maintenance costs
Important performance indicators include pressure loss, efficiency, and service life. Evaluating these factors will help you select the optimal air filter.
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Oshitari Laboratories Inc., Japan Vilene Group
Introduction of Oshitari
Laboratories, Inc.
Our group company, Oshitari Laboratories, Inc., has consistently focused on the research and development of filters, delivering a wide range of innovative filtration products.
By combining Japan Vilene’s advanced material development technologies with Oshitari Laboratories’ sophisticated filter processing capabilities, we offer a synergistic product lineup that meets diverse customer needs.
W-EDM Filters
Filters for wire-cut electric discharge machines (EDM). These products feature industry-leading quality, long-life construction, and high filtration precision.
Cleanroom Products
Installed on ceilings, walls, or production equipment, these products supply clean air into the room, enabling the creation of cleanrooms ranging from ISO Class 4 to 8 (equivalent to Class 10 to 100,000).
Self-Regenerating Filters
Oshitari Laboratories’ Self-Regenerating filters capture dust and can be automatically cleaned using a vacuum system. Ideal for environments with high dust concentrations.
Air filters Materials Network
Global Filter
Business Development
We are expanding our filter business across Asia in collaboration with Freudenberg Filtration Technologies, a member of the Freudenberg Group and one of the world’s leading companies in the filtration industry.
We operate joint ventures with Freudenberg Filtration Technologies in China, South Korea, and Thailand, enabling us to manufacture, process, and globally supply filter products.
Freudenberg & Vilene Nonwovens (Suzhou) Co., Ltd.
Freudenberg & Vilene Filter (Thailand) Co., Ltd.
Korea Vilene Co., Ltd.
Freudenberg Vilene Filtration Technologies Korea Co., Ltd.
Freudenberg & Vilene
Nonwovens (Taiwan) Co., Ltd.
