吉原化工 List of Products and Services

The "Moyai Drain NSB Type" is a drainage material for the back side of NATM tunnels that suppresses water leakage into the tunnel interior. The core material features a unique three-dimensional mesh spiral structure, providing high compressive strength and drainage performance. Made of polypropylene with a high void ratio, it is less likely to clog due to free lime and other substances. By inserting it into the waterproof sheet that covers the non-woven fabric on the back side of the waterproof sheet, it effectively captures water from the sprayed surface and directs it to the back side drainage material. 【Features】 ■ Less likely to clog due to free lime and other substances ■ Effectively captures water from the sprayed surface and directs it to the back side drainage material ■ Eliminates the need to wrap the waterproof sheet around the back side of the drainage material ■ No need for band steel, allowing for easy installation by directly nailing concrete nails ■ Made from recycled materials and certified with an eco-mark, considering the environment *For more details, please refer to the PDF document or feel free to contact us.

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The "Moyai Drain" is a drainage material with a three-dimensional mesh structure, featuring a spiral pipe arranged in the direction of water flow inside. The "Standard" type is a rigid plate that is particularly suitable for installation in flat areas for backfill drainage of retaining walls, bridge abutments, and concrete structures. The "N type" comes in two varieties: "Standard" and "Flexible," allowing for selection based on application. Both types possess excellent drainage collection capabilities and high pressure resistance due to their three-dimensional mesh spiral structure, making them ideal drainage materials. 【Standard Type Features】 ■ Fully permeable drainage material ■ Rigid plate structure ■ Suitable for installation in flat areas for backfill drainage ■ Three-dimensional mesh spiral structure ■ Combines excellent drainage collection capabilities with high pressure resistance *For more details, please refer to the PDF document or feel free to contact us.

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The "Moyai Drain N Type" is a product for ground drainage that significantly simplifies construction compared to pipe materials. Its fully perforated structure allows for smooth water absorption from all directions, ensuring effective water collection. Additionally, it uses a highly permeable mesh filter to prevent clogging. While it is a three-dimensional mesh structure, it features a pipe-like cavity arranged in the water flow direction, providing one of the highest permeability rates among three-dimensional mesh structures. 【Features】 ■ Maintains high pressure resistance while being flexible and curving easily, enhancing adhesion to the installation surface. ■ Made with over 50% recycled polypropylene, considering environmental impact. ■ Proven track record of use in various ground installations (natural grass, artificial turf, and no grass). *For more details, please refer to the PDF document or feel free to contact us.

• Piping Materials

The "Moyai Drain" from Yoshihara Chemical is a permeable material made from polypropylene, which excels in chemical resistance among polymer materials, and features a three-dimensional mesh structure with interwoven strands. Due to its excellent durability and permeability, this "Moyai Drain" is actively used as a filtration filter for koi farming. ■ Material: Polypropylene * It has obtained an eco-mark by using recycled materials. ■ Dimensions: Sizes can be cut to meet your requirements. * Please feel free to contact us.

• Piping Materials

The "Moyai Drain ST Type" is a drainage material designed to quickly handle seepage and dripping water in the arch section of the primary lining of NATM tunnels. It possesses excellent performance in terms of required functions for back drainage materials, such as compressive strength, water permeability, and workability, clearing the standard of 75 kN/m² or more (according to NEXCO tunnel design guidelines) at a compression rate of 20%. Additionally, it has obtained an eco-mark by using recycled polypropylene, contributing to resource conservation and a circular economy. 【Features】 ■ Clears 75 kN/m² or more at a compression rate of 20% ■ Higher water permeability compared to water-permeable mats with a gourd structure ■ Good workability as it does not require band steel for nailing (patented) ■ Obtained an eco-mark by using recycled polypropylene ■ Contributes to resource conservation and a circular economy ■ The polypropylene raw material is less likely to adhere to free lime compared to other materials *For more details, please refer to the PDF document or feel free to contact us.

• Piping Materials

The "Moyai Drain" from Yoshihara Chemical is a civil engineering drainage material made from polypropylene, which excels in chemical resistance among polymer materials. It features a three-dimensional mesh structure with fused linear elements. Leveraging the high compressive strength and flexibility characteristic of the "Moyai Drain," we have developed a protector for submersible pumps! Until now, it has been common to address various situations at each site with different methods, but this product reduces the man-hours required for on-site work. ■ Material: Polypropylene * It has obtained an eco-mark by using recycled materials. ■ Dimensions Large: Inner diameter approximately 40 cm × height approximately 50 cm Small: Inner diameter approximately 30 cm × height approximately 30 cm * Please feel free to contact us.

• Piping Materials

【Direct installation of artificial turf onto concrete... Are pest and mold hygiene measures sufficient...?】 Yoshihara Chemical's "Plastic Grating (Three-Dimensional Mesh Spiral Structure)" features high strength, breathability, and permeability, making it suitable for balconies and verandas, and is even adopted for public works. Compared to existing artificial turf base materials, its resin composition provides superior water resistance and breathability, preventing the growth of mold and pests, offering significant hygiene benefits. Additionally, it can be ordered in sizes starting from 50cm, allowing for a wide range of applications. 【Common troubles with artificial turf installation】 ■ Direct installation without a base leads to poor drainage and early deterioration of concrete... ■ DIY with existing products resulted in uneven installation, creating a breeding ground for mold and pests... ■ Want to perfectly match the base material to the size of the balcony or garden... * Custom cuts in square or rectangular shapes are available in 50cm increments. (Processing to delivery takes about 2 weeks) * For inquiries about sizes and installation, please feel free to contact us using the form below.

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• Other polymer materials

The "Moyai Drain M-13PF" is a water treatment material for the arch section compatible with the tunnel FILM construction method. In the tunnel FILM method, mortar is filled into the gaps between the sprayed surface and the waterproof sheet, and the finishing is done using its adhesion. Therefore, the drainage material used for water treatment must be a product that takes the filling mortar into consideration. 【Features】 ■ The waterproof sheet is made of a special laminated sheet of polyethylene film and non-woven fabric, preventing the mortar from peeling off after installation. ■ A wide type of chemical synthetic fiber non-woven fabric, 10mm thick, is attached to both sides of the waterproof sheet, preventing mortar from flowing in from the sides of the sheet. ■ The core material M-13r has increased voids compared to previous versions, improving drainage performance and making it less likely to clog with free lime and other materials. *For more details, please refer to the catalog or feel free to contact us.

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This is a lock bolt cap designed to prevent damage to water stop sheets in NATM tunnel construction. 【Features】 ○ The installation method is very simple. ○ In addition to the lock bolt, the protective plate with a radial spring function also protects the water stop sheet from the corners of the square washer. ● For other functions and details, please download the catalog.

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The "plastic slatted board" is an ideal resin-made three-dimensional mesh spiral structure that serves as an alternative to slatted boards and the core materials of tatami mats and tatami floors. Compared to wooden slatted boards and tatami, it is made of resin, making it water-resistant and highly breathable, which prevents mold growth and offers hygiene benefits. Additionally, it can be customized in size and thickness, allowing for a wide range of applications. 【Ideal for the following places!】 ■ Floors inside commercial large refrigerators ■ Rice cold storage ■ Mattress protection mats (dehumidifying mats) ■ Floors of cold transport equipment, etc. *Please refer to the PDF for "comparison examples and photos" available for download.

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• Other polymer materials

The "Moyai Drain" from Yoshihara Chemical is a permeable material made from polypropylene, which excels in chemical resistance among polymer materials, and features a three-dimensional mesh structure with fused strands. Utilizing the durability of the "Moyai Drain," we have developed a 'slatted mat' for beds and mattresses! This resin-based dehumidifying mat is an ideal alternative to plastic or wooden slats and the core material of tatami mats. Compared to wooden slats, mattresses, and tatami, it is water-resistant and offers excellent breathability, preventing mold growth and providing hygiene benefits. Additionally, it can be customized in size and thickness, making it suitable for a wide range of applications. 【Do you have any of these concerns?】 ■ Moisture accumulates under the mattress, causing mold... ■ No matter how much you air it out, dust mites don't decrease... ■ Slatted beds have too much contact area, failing to prevent mold... *Please feel free to contact us.

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• Other polymer materials

The "plastic slatted board" is an ideal resin-made three-dimensional mesh spiral structure that serves as an alternative to wooden slatted boards and tatami mats or tatami bases. Compared to wooden slatted boards and tatami, it is made of resin, making it water-resistant and exceptionally breathable, which prevents mold growth and offers hygiene benefits. Additionally, it can be freely processed in terms of size and thickness, allowing for a wide range of applications. A must-see for condominium management and building maintenance professionals! First, take a look at the samples and compare them with regular slatted boards! 【Do you have any of these concerns?】 ■ Maintenance is difficult because closets get moldy... ■ Using slatted boards in humid areas leads to immediate mold growth and unsanitary conditions... ■ Wooden slatted boards have fixed sizes, making it hard to find the right size... *Please view the "comparison examples and photos" in the PDF available for download.

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• Other polymer materials

The "plastic slatted bed base (three-dimensional mesh spiral structure)" is a resin-made three-dimensional mesh spiral structure that is suitable as a substitute for the core material of tatami mats, as well as for slatted beds and mattresses. Compared to wooden slatted beds, mattresses, and tatami, it is made of resin, making it water-resistant and highly breathable, which prevents mold growth and offers hygiene benefits. Additionally, it can be freely processed in terms of size and thickness, allowing for a wide range of applications. 【Features】 ■ Excellent breathability and pressure resistance, with water resistance allowing for washing ■ Size and thickness adjustment processing is possible ■ Can be used as a substitute for wooden slatted beds, core materials for tatami mats, slatted beds, and mattresses *Please refer to the PDF available for download for "comparison examples and photos."

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• Other polymer materials

The "plastic slatted bed (three-dimensional mesh spiral structure)" is an ideal resin-made three-dimensional mesh spiral structure that serves as an alternative to slatted beds and tatami mats or tatami bases. Compared to wooden slatted beds and tatami, this resin product is water-resistant and has excellent breathability, preventing mold growth and providing hygiene benefits. Additionally, it can be freely processed in terms of size and thickness, making it suitable for a wide range of applications. 【Do you have any of these concerns?】 ■ Using slatted beds in humid places leads to mold growth and unsanitary conditions... ■ I am using a slatted bed, but I want to eliminate mold in areas where food is handled... ■ Wooden slatted beds come in fixed sizes, making it hard to find the right size... *Please refer to the PDF for "comparison examples and photos" available for download.

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• Other polymer materials

The "Moyai Drain Mat and Pipe" from Yoshihara Chemical is a permeable material made from polypropylene, which has excellent chemical resistance among polymer materials, and features a three-dimensional mesh structure with fused strands. It is an ideal drainage material that combines the functionality of a fully perforated mesh for water collection and a hollow spiral pipe for water flow, while also possessing high pressure resistance. This product is registered with NETIS and has received high praise from the Ministry of Land, Infrastructure, Transport and Tourism, stating that "the water flow performance of the Moyai Drain can be judged to be superior compared to conventional mesh structure permeable materials." ★ Currently, we are offering free samples of various Moyai Drains! 【Features】 ■ Higher water permeability compared to conventional mesh structure permeable materials ■ Outstanding pressure resistance due to the three-dimensional mesh spiral structure ■ Extensive adoption record: 136 cases by the Ministry of Land, Infrastructure, Transport and Tourism, 602 cases by other public institutions, and 35 cases in the private sector (as of May 2012) ■ Reliable NETIS registered product: NETIS number CB-080007-V * Please download the catalog for "Moyai Drain Mat and Pipe" to view the PDF data. * If you would like a sample, please contact us with "Sample Request" clearly stated.

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The "Moyai Drain Mat" is a permeable material made from polypropylene, which excels in chemical resistance among polymer materials, and features a three-dimensional mesh structure with fused filaments. The newly formed structure through integral molding is a fully perforated filament mesh that combines the functions of water collection and water flow through a hollow spiral pipe, making it an ideal drainage and collection material with high compressive strength. *For more details, please refer to the catalog or feel free to contact us.*

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The "Moyai Drain Method 'Rainwater Retention Infiltration Layer'" is used as an alternative material for filling aggregates such as single-sized crushed stone in rainwater retention infiltration facilities, as well as a cushioning material to protect the main retention tank. By using factory-produced products with high dimensional accuracy, the flatness of the foundation ground is ensured, allowing for stable construction as a measure against unevenness. A rainwater retention structure integrated with the main retention tank can be formed. With a void ratio of over 80%, the outflow suppression function is improved compared to aggregates like single-sized crushed stone. The unique structure of the Moyai Drain has been evaluated by the review committee of the Rainwater Retention Infiltration Technology Association (public corporation) as being applicable for rainwater outflow suppression facilities. [Moyai Drain Method] - Simplifies the construction process, leading to a reduction in construction time. - Can be installed around the outer perimeter of the main body and used as a cushioning material with outflow suppression functionality. - Eco-mark product using 50-60% recycled materials. *For more details, please refer to the catalog or feel free to contact us.

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The "Moyai Drain Mat" is a permeable material made from polypropylene, which excels in chemical resistance among polymer materials, featuring a three-dimensional mesh structure with fused strands. The newly formed structure through integral molding is a fully perforated strand mesh that combines the functions of water collection and water flow through a hollow spiral pipe, making it an ideal drainage material with high compressive strength. The "Moyai Drain Pipe N Type (Fully Permeable Type)" has a fully permeable filter structure (0.6mm PE mesh filter). 【Features】 ■ Excellent chemical resistance ■ High compressive strength ■ Fully permeable filter (0.6mm PE mesh filter) *For more details, please refer to the catalog or feel free to contact us.

• Piping Materials
• Other polymer materials
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The "Moyai Drain PF Type" is a water treatment material designed to be directly reinforced with mortar after water treatment work, such as the FILM method and single-shell method used in tunnel construction. The waterproof section features a special laminated sheet made of polyethylene film and non-woven fabric, allowing the mortar to adhere after curing by entangling with the surface non-woven fabric. This anti-peeling effect ensures a strong bond between the drainage material installation side and the reinforcement section. 【Features】 ■ The waterproof sheet does not peel off after installation due to the special laminated sheet of polyethylene film and non-woven fabric. ■ A wide type of chemical synthetic fiber non-woven fabric, 10mm thick, is attached to both sides of the waterproof sheet to prevent mortar from flowing in from the sides of the sheet. ■ Installation is possible by nailing through the non-woven fabric on both sides. ■ The core material has increased voids for improved water permeability, and its flexibility allows for installation that adheres well even on uneven surfaces. ■ It is less likely to clog with free lime and other materials. *For more details, please refer to the catalog or feel free to contact us.

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• Other polymer materials
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The "Moyai Drain Mat" is a permeable material made from polypropylene, which is known for its excellent chemical resistance among polymer materials. It features a three-dimensional mesh structure formed by the fusion of linear strands. The newly formed structure through integral molding is a fully open-type linear mesh that combines the functions of water collection and water flow through a hollow spiral pipe, making it an ideal drainage material with high compressive strength. The "SWB Type (semi-permeable type)" comes with belts for installation on both sides, has a single-sided core material (without a permeable filter), and features a single-sided impermeable sheet. 【Features】 ■ Excellent chemical resistance ■ High compressive strength ■ Belts for installation on both sides ■ Dedicated for tunnel back drainage (B) *For more details, please refer to the catalog or feel free to contact us.

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• Other polymer materials
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The "Moyai Drain Mat" is a permeable material made from polypropylene, which has excellent chemical resistance among polymer materials, and features a three-dimensional mesh structure with fused strands. The newly formed structure through integral molding is a fully open-type strand mesh that combines the functions of water collection and water passage through a hollow spiral pipe, making it an ideal drainage material with high compressive strength. The "NB Type (Fully Permeable Type)" comes with a belt for one-sided installation and features a fully permeable filter (4mm PP mesh filter). 【Features】 ■ Dedicated for tunnel back drainage work (A) ■ Excellent chemical resistance ■ High compressive strength ■ Comes with a belt for one-sided installation *For more details, please refer to the catalog or feel free to contact us.

• mat
• Other polymer materials
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The "Moyai Drain Mat" is a permeable material made from polypropylene, which excels in chemical resistance among polymer materials, and features a three-dimensional mesh structure with fused strands. The newly formed structure through integral molding is a fully open-type strand mesh that combines the functions of water collection and the hollow water passage of a spiral pipe, making it an ideal drainage material with high compressive strength. The "FS Type (semi-permeable type)" is optimal for applications such as drainage behind retaining walls and treatment of groundwater under tunnel invert. As custom products, there are options with a resin belt for attachment on the fin part of the permeable sheet, available as one-sided belt (FSB type) or both-sided belt (FSWB type). 【Features】 ■ Excellent chemical resistance ■ High compressive strength ■ One-sided permeable filter (non-woven fabric) ■ One-sided impermeable sheet (with fins) * A belt on the fin part of the impermeable sheet is also available (made to order) For more details, please refer to the catalog or feel free to contact us.

• mat
• Other polymer materials
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The "Moyai Drain Mat" is a permeable material made from polypropylene, which excels in chemical resistance among polymer materials, featuring a three-dimensional mesh structure with fused strands. The newly formed structure through integral molding is a fully open-type strand mesh that combines the functions of water collection and hollow water passage through a spiral pipe, making it an ideal drainage material with high compressive strength. The "N Type (Fully Permeable Type)" is optimal for applications such as embankment horizontal drainage, drainage behind retaining walls, slope drainage, groundwater drainage, drainage for structures, rooftop garden drainage, and general underground drainage. 【Features】 ■ Excellent chemical resistance ■ High compressive strength ■ Fully permeable filter (0.6mm PE mesh filter) For more details, please refer to the catalog or feel free to contact us.

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• Other polymer materials
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This is a lock bolt cap designed to prevent damage to water stop sheets in NATM tunnel construction. 【Features】 ○ The installation method is very simple. ○ In addition to the lock bolt, the protective plate with a radial spring function also protects the water stop sheet from the corners of the square washer. ● For other functions and details, please download the catalog.

• Piping Materials
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The "Moyai Drain Mat" is a drainage material made from polypropylene, which is the most chemically resistant among polymer materials, featuring a three-dimensional mesh structure with fused strands. Unlike typical three-dimensional mesh (such as loofah structures), it has randomly arranged tubular cavities (spiral pipe-like) in the in-plane water flow direction, allowing it to have multiple hollow sections in the water flow cross-section while still being a three-dimensional mesh. Furthermore, the Moyai Drain Mat Flexible Type maintains high pressure resistance while being able to bend freely, achieving a balance of rigidity and flexibility, making stable construction possible even on uneven surfaces such as sprayed concrete. 【Features】 - Fully perforated linear mesh for water collection - Hollow spiral pipes for water flow - Extremely high pressure resistance - Eco Mark certified product (Certification Number 07118006) - New Technology Information Provision System (NETIS) Registration Number: CB-080007-V For more details, please contact us or download the catalog.

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The Moyai drain pipe is a permeable material made from polypropylene, which is the most chemically resistant among polymer materials, and features a three-dimensional mesh structure with fused strands. 【Features】 ○ The newly formed structure created by integral molding combines the function of water collection with a fully perforated strand mesh and the function of water flow through the hollow spiral pipe, making it an ideal drainage and collection material with extremely high pressure resistance. ● For other functions and details, please download the catalog.

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