吉原化工 List of Products and Services

The "Moyai Drain NSB Type" is a drainage material for 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 resistant to clogging from free lime and other substances. By inserting it into the waterproof sheet that covers the non-woven fabric on the back of the waterproof sheet, it effectively captures water from the sprayed surface and directs it reliably to the back drainage material. 【Features】 ■ Resistant to clogging from free lime and other substances ■ Effectively captures water from the sprayed surface and directs it to the back drainage material ■ Eliminates the need to wrap the waterproof sheet around the back 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.

• Drainage material

The "Moyai Drain" is a drainage material with a three-dimensional mesh structure, featuring a spiral pipe arrangement that directs water flow internally. The "Standard" type is a rigid, plate-like structure, making it suitable for installation in flat areas for backfill drainage behind 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 ■ High rigidity plate-like 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.

• Drainage material

The "Moyai Drain N Type" is a product for ground subsurface drainage that significantly simplifies construction compared to piping materials. Its fully perforated structure allows for smooth water absorption from all directions, ensuring reliable water collection. Additionally, it uses a highly permeable mesh filter to prevent clogging. Despite being a three-dimensional mesh structure, it has 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 compressive strength while being flexible and curving, enhancing adhesion to the installation surface. ■ Made with over 50% recycled polypropylene, considering environmental impact. ■ Proven track record of use in numerous ground installations (natural grass, artificial turf, and no grass). *For more details, please refer to the PDF document or feel free to contact us.

• Drainage material

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 linear strands. Due to its excellent durability and permeability, this "Moyai Drain" is actively used as a filtration filter for koi farming. ■ Material: Polypropylene *Obtained the eco mark by using recycled materials. ■ Dimensions: Sizes can be cut to meet your requirements. *Please feel free to contact us.

• Drainage material

The "Moyai Drain ST Type" is a drainage material designed to quickly handle groundwater 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 a water-permeable mat with a gourd structure ■ No need for band iron or other materials for nailing, ensuring good workability (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.

• Drainage material

The "Moyai Drain" from Yoshihara Chemical is a civil engineering drainage material made from polypropylene, which excels in chemical resistance among polymer materials, and features a three-dimensional mesh structure with fused filaments. Utilizing 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 using different methods, but this product can reduce the man-hours required for on-site work. ■ Material: Polypropylene *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.

• Drainage material

【Direct installation of artificial turf onto concrete... Are pest and mold hygiene measures sufficient...?】 Yoshihara Chemical's "Plastic Slatted Board (Three-Dimensional Mesh Spiral Structure)" features high strength, breathability, and water permeability, making it suitable for balconies and verandas, and is even adopted in public works. Compared to existing artificial turf base materials, its resin composition offers superior water resistance and breathability, preventing the growth of mold and pests, providing significant hygiene benefits. Additionally, it can be ordered in sizes starting from 50cm, allowing for a wide range of applications. 【Common issues 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... *Square or rectangular custom cuts can be ordered in 50cm increments. (Processing to delivery takes about 2 weeks.) *For inquiries regarding sizes and installation, please feel free to contact us using the form below.

• Gardening supplies
• Exterior Materials
• Wall and rooftop greenery

The "Moyai Drain M-13PF" is a water treatment material for the arch section compatible with the Tunnel FILM method. In the Tunnel FILM method, mortar is filled into the gaps between the sprayed surface and the waterproof sheet, and the adhesion strength is used for finishing. Therefore, the drainage material used for water treatment must be a product that takes into consideration the filled mortar. 【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 with a thickness of 10mm 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 the voids compared to before, 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.

• Drainage and water removal
• Drainage material

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.

• Bridge Construction

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 these places!】 ■ Floors inside commercial large refrigerators ■ Rice storage coolers ■ Mattress protection mats (dehumidifying mats) ■ Floors of refrigerated transport equipment, etc. *Please refer to the PDF available for download for "comparison examples and photos."

• Drainage and water removal
• Drainage material
• Renovation and repair methods

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. Leveraging 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, leading to mold... ■ No matter how much you air it out, the dust mites don't decrease... ■ Slatted beds have too much contact area and don't effectively prevent mold... *Please feel free to contact us.

• Drainage and water removal
• Drainage material
• Renovation and repair methods

The "plastic slatted board" is an ideal resin-made three-dimensional mesh spiral structure that serves as an alternative to 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 highly breathable, which prevents mold growth and provides hygiene benefits. Additionally, it can be customized in 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 places leads to quick mold growth and unsanitary conditions... ■ Wooden slatted boards 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.

• Drainage and water removal
• Drainage material
• Renovation and repair methods

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 can be adjusted ■ Can be used as a substitute for wooden slatted beds, core materials of tatami mats, slatted beds, and mattresses *Please refer to the PDF available for download for "comparison examples and photos."

• Drainage and water removal
• Drainage material
• Renovation and repair methods

The "plastic slatted bed (three-dimensional mesh spiral structure)" is an ideal resin-based three-dimensional mesh spiral structure that serves as a substitute for slatted beds and tatami mats or tatami bases. Compared to wooden slatted beds 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. 【Do you have any of these concerns?】 ■ Using slatted beds in humid places leads to mold growth and unsanitary conditions... ■ I am using slatted beds, but I want to prevent mold in areas where food is handled... ■ Wooden slatted beds come in fixed sizes, making it difficult to find the right size... *Please refer to the PDF available for download for "comparison examples and photos."

• Drainage and water removal
• Drainage material
• Renovation and repair methods

The "Moyai Drain Mat and Pipe" from Yoshihara Chemical is a permeable material made from polypropylene, which excels in chemical resistance among polymer materials. It features a three-dimensional mesh structure with fused strands, combining the functions of a fully perforated mesh for water collection and a hollow spiral pipe for water flow, making it an ideal drainage material with 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 ■ Excellent 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.

• Drainage and water removal
• Drainage material
• Renovation and repair methods

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 has a fully open-type 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 pressure resistance. *For more details, please refer to the catalog or feel free to contact us.*

• Drainage and water removal
• Drainage material
• Renovation and repair methods

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 such as single-sized crushed stone. The unique structure of the Moyai Drain has been evaluated by the review committee of the (Public Corporation) Rainwater Retention Infiltration Technology Association 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.

• Drainage and water removal
• Drainage material
• Rainwater infiltration facilities

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 integrated molding is a fully perforated strand mesh that combines the functions of water collection and the hollow water flow of a 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.

• Drainage and water removal
• Drainage material
• Piping materials (plastic pipes)

The "Moyai Drain PF Type" is a water treatment material designed for methods such as the FILM method and single-shell method used in tunnel construction, which directly reinforces with mortar after water treatment. The waterproof section features a special laminated sheet made of polyethylene film and non-woven fabric, allowing the mortar to adhere after curing by intertwining 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, preventing mortar from flowing in from the sides of the sheet. ■ Can be installed by nailing through the non-woven fabric sections on both sides. ■ Increased voids in the core material improve water permeability, and enhanced flexibility allows for installation that adheres well to uneven surfaces. ■ Resistant to clogging from free lime and other materials. *For more details, please refer to the catalog or feel free to contact us.

• Drainage and water removal
• Drainage material

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 "SWB Type (semi-permeable)" comes with belts for mounting 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 mounting on both sides ■ Dedicated for tunnel back drainage (B) *For more details, please refer to the catalog or feel free to contact us.

• Drainage and water removal
• Drainage material

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 perforated strand mesh that combines the functions of water collection and hollow water flow through a 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】 ■ Exclusively 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.

• Drainage and water removal
• Drainage material
• others

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 has a fully open-type 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 "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 fin) * A belt on the fin part of the impermeable sheet is also possible (made to order) For more details, please refer to the catalog or feel free to contact us.

• Drainage and water removal
• Drainage material

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 formed by the fusion of linear elements. The newly formed structure through integrated molding has a fully perforated linear mesh that combines the functions of water collection and the hollow passage of water through a spiral pipe, making it an ideal drainage and collection 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 behind 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.

• Drainage and water removal
• Drainage material
• others

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.

• Bridge Construction

The "Moyai Drain Mat" is a drainage material made from polypropylene, which has the highest chemical resistance among polymer materials, and features a three-dimensional mesh structure with fused strands. Unlike typical three-dimensional mesh structures (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 it possible to install stably 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.

• Drainage and water removal

The Moyai drain pipe is a permeable material made from polypropylene, which has the best chemical resistance 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 an open-hole type strand mesh and the function of water flow through the hollow of a spiral pipe, making it an ideal drainage and collection material with extremely high pressure resistance. ● For other functions and details, please download the catalog.

• Drainage material
• Drainage and water removal
• Pile and foundation work