多機能フィルター List of Products and Services

Our company celebrates its 30th anniversary on June 6, 2024. We were founded on June 6, 1994. It has been 30 years since Multi-Function Filter Co., Ltd. launched the multi-function filter. The product was developed first, which led to the company being named Multi-Function Filter. Initially, there were questions like, "Is there really a need for such a product?" However, over time, it has transformed into a product that is in demand due to global climate changes, becoming a long-selling product with a 30-year history. If you are facing issues with soil erosion, please consider our solutions.

• Slope protection material

This product is primarily designed for installation on slopes (embankments). For those who want to prevent erosion (slope protection) but do not want to grow plants, a product has been developed by Multi-Functional Filter Co., Ltd., a manufacturer of slope protection materials. It features a three-layer structure of different non-woven fabrics: a weed prevention layer, a shading layer, and an erosion prevention layer. *Patent obtained. The three layers are integrated into a mat-like product. It has a soft and flexible texture, allowing it to conform to minor irregularities. 【Novelty】 Attachment of weed prevention sheet + erosion prevention layer (function) - It adheres closely to the soil, preventing sediment flow and reducing sheet lifting by maintaining contact. - It suppresses infiltrating water in the soil, preventing slope collapse.

• Landscaping and planting

■Challenges of Slope Protection Methods■ 〔Challenges of Erosion Prevention Methods〕 Vegetation Method ⇒ Requires maintenance such as mowing Shotcrete ⇒ Poor aesthetics, high cost 〔Challenges of Weed Prevention Methods〕 Sheet Method ⇒ Rainwater infiltrates the back, causing erosion and damage from wind lifting ■Novelty■ 【Three-layer integrated structure of weed prevention layer, shading layer, and erosion prevention layer】 Weed Prevention ⇒ Weed Prevention Layer Vegetation Growth Interruption ⇒ Shading Layer Erosion Prevention ⇒ Erosion Prevention Layer Furthermore, the erosion prevention layer adheres closely to the soil, effectively preventing sheet lifting and controlling turbid water. Based on the above effects, we propose a method (product) specialized for slopes and embankments for a wide range of sites.

• Civil Engineering Method

■What is BSC■ BSC stands for Biological Soil Crust. It refers to a sheet-like colony (population) of soil microorganisms formed by soil algae, lichens, filamentous fungi, and mosses that intertwine with soil particles and clumps on the surface. 【BSC is a natural phenomenon observed in the early stages of vegetation succession】 It naturally forms over time on surfaces such as eroded slopes and newly cultivated farmland. It can also be seen in nearby places like residential gardens. ■Novelty■ We utilize soil algae, which are distributed throughout the natural world [globally], as materials. Algae are widespread species confirmed worldwide, moving and dispersing globally with sand and dust carried by the wind. They reproduce asexually and coexist with local plants without causing genetic disruption, being treated as native species. 【Flow from BSC formation to plant growth】 BSC formation [soil algae, mosses, etc.] 　↓ BSC formation prevents erosion and improves water retention [creating a plant growth environment] *within about 3 months 　↓ Surrounding plants arrive and grow on BSC [herbaceous growth] *within about 6 months 　↓ Surrounding plants arrive and grow on BSC [woody growth] *within about 1 to 2 years

• Slope protection material

We would like to introduce a case where our multifunctional filter was used for slope protection on a steep gradient. The construction site adopted a method combining stabilization techniques to ensure the stability of the slope. Although it is a steep gradient (1:5), the area, including around the pressure plate, has achieved full greening without causing erosion or other issues. 【Case Overview】 ■ Construction Location: Fukui Prefecture ■ Product Used: Multifunctional Filter "MF-45R-10wn" ■ Construction Details - Adopted while ensuring slope stability by combining stabilization techniques - Achieved full greening without causing erosion or other issues, including around the pressure plate *For more details, please refer to the PDF document or feel free to contact us.

• Slope protection material
• Other civil engineering works

We would like to introduce a case where our multifunctional filter was used for disaster recovery work. The construction site is located within a natural park, and since there was a desire for environmental restoration using local plants, we chose to implement a natural invasion promotion method. Seeds were not attached to the product; only fertilizers and soil conditioners were used. Since vegetation takes time to establish, our method, which excels in long-term surface protection, was adopted. 【Case Overview】 ■ Construction Location: Kumamoto Prefecture ■ Construction Product: MF-45R-5・10・30 (without seeds) used in combination with high-strength netting ■ Construction Details - Chosen to promote environmental restoration using local plants, we selected the natural invasion promotion method. - Seeds were not attached to the product; only fertilizers and soil conditioners were used. *For more details, please refer to the PDF document or feel free to contact us.

• Other civil engineering works
• Civil Engineering Method
• Slope protection material

We would like to introduce a case where our multifunctional filter was used to protect the slopes around a sediment control dam. Since there was a desire for landscape restoration using local vegetation, the 'SP type' was selected. In areas with gentle slopes, it was anticipated that the large surface area would catch rainfall, causing rainwater to accumulate and flow down, which raised concerns about erosion, so it was installed accordingly. [Case Overview] ■ Installation Location: Hiroshima Prefecture ■ Product Used: Multifunctional Filter "SP-45" ■ Installation Details - Adopted to protect the easily eroded sandy soil slopes - Installed in conjunction due to increased concerns about erosion even in gentle slope areas *For more details, please refer to the PDF document or feel free to contact us.

• Erosion control works
• Slope protection material
• Civil Engineering Method

The "Erosion Control Vegetation Mat and Multifunctional Filter" was developed with the belief that preserving soil and nurturing greenery through the relationship of green, soil, and water is the first step in a disaster-prone country like Japan. 【Protection can be achieved immediately after installation】 A slope protection and greening material that demonstrates immediate effectiveness. The erosion control vegetation mat and multifunctional filter is a product made primarily from polyester non-woven fabric (web) with a porosity rate of 97% to 98%. The web (high-porosity crimped polyester non-woven fabric) is manufactured in our own factory to our original specifications. This non-woven fabric, completed after much trial and error, is the core of the product structure. The multifunctional filter, equipped with this web, can be simply laid on slopes created by construction work or disasters, and its unique fiber structure gently protects the soil from various obstacles such as rain, wind, freezing, and drying, while restoring the natural landscape. As proof of its technology, the multifunctional filter has obtained the "Construction Technology Certification" from the Civil Engineering Research Center.

• Civil Engineering Sheet
• Slope protection material
• Landscaping materials

Erosion control vegetation mats, officially known as "Erosion Control Vegetation Mat Construction (Curing Mat Construction)," have been published as standard unit prices for civil engineering work in the temporary supplement of construction prices "Civil Engineering Cost Information" since April 2018. As for erosion control vegetation mat construction, the only method currently designated is our company's method, the "Multifunctional Filter." This designation is due to the evaluation of construction results and achievements at the time of graduation from the Ministry of Land, Infrastructure, Transport and Tourism's NETIS, which led to its transition to standard unit prices for civil engineering work. Due to recent changes in weather, such as sudden heavy rains and prolonged rainfall, landslides and sediment disasters have frequently occurred in the country. Erosion control vegetation mat construction is expanding its scope of application in prevention, countermeasures, disaster recovery work, and road-related projects.

• Slope protection material

[Standard/SP Type] Type without vegetation materials, etc. The multifunctional filter SP type is a product consisting of a protective net and a web (non-woven fabric). It does not contain seeds or fertilizers and is used for purposes such as preventing soil erosion, preventing turbid water, and establishing a foundation for natural vegetation introduction through the effects of the product. Additionally, it can also prevent the runoff of sprayed materials by providing protection after the spraying method is applied. Recently, it has increasingly been used for the protection of temporary slopes.

• Civil Engineering Sheet

【Standard / MF Type】 Seed, Fertilizer, and (Soil Improvement Material) Attachment Type The multifunctional filter, MF type, is a product that integrates protective nets and web (non-woven fabric) with seeds, fertilizers, and soil improvement materials. It protects slopes and prepares the vegetation foundation while promoting the germination and growth of the attached seeds. Depending on the objectives of the site and construction conditions, products (grades) with varying amounts of soil improvement materials (vegetation support materials) are used.

• Civil Engineering Sheet

[WN Type (Hexagonal Wire Mesh Mounted)] Hexagonal wire mesh is attached to the surface of the standard type. This enhances adhesion to the ground and expands the applicable range. The multifunctional filter WN type is a product that integrates hexagonal wire mesh with standard products (SP, MF). Slopes that were difficult to construct with standard products alone can be expanded in construction range by using the WN type. - Uneven slopes ⇒ Improved mat conformity and adhesion to irregularities - Slopes with concerns about small falling rocks ⇒ Suppression through reinforcement effects - Steep slopes ⇒ Improved mat adhesion - Cold regions ⇒ Increased strength against pulling of the mat due to snow weight - Frost heave ⇒ Suppression of soil uplift due to frost heave - Wildlife damage prevention ⇒ Reduction of mat trampling - Saturated surfaces ⇒ Measures against mat lifting due to buoyancy

• Civil Engineering Sheet

【Eco Mat (Biodegradable)】 A vegetation mat made from biodegradable materials for erosion prevention. After its role is complete, it decomposes into the soil. The Eco Mat consists of a non-woven fabric called web and its protective net, both made from biodegradable materials. In addition to being used for traditional purposes such as soil erosion prevention, turbidity prevention, and the introduction of natural vegetation, it is a product designed with the Earth's environment in mind, allowing for natural circular recycling.

• Civil Engineering Sheet

【BSC Mat】 ◀Soil Algae Material (BSC-1) × Multifunctional Filter▶ NETIS: CG-220006-A ▷What is BSC? Biological Soil Crust BSC refers to a sheet-like colony of soil microorganisms formed by soil algae, lichens, filamentous fungi, and mosses that intertwine soil particles and clumps at the surface. This phenomenon occurs naturally and can be observed in shaded areas of mountainous regions and nearby locations. Soil algae are not invasive or native species; they are protozoa that exist universally around the world. They travel globally carried by wind along with dust and sand. The BSC formed by protozoa serves as the starting point for vegetation succession. <BSC ⇒ Grassland (annual and perennial plants) ⇒ Positive Shrubland ⇒ Positive Forest ⇒ Negative Forest> It is said that it takes about 20 years to form grassland in areas without a natural environment. The BSC mat aims to shorten this period.

• Civil Engineering Sheet