ASAHI KASEI ADVANCE CORPORATION List of Products and Services

The "ADK Sheet" is a breathable and waterproof sheet that allows gas from waste to pass through while making it difficult for rainwater to penetrate. It features a middle layer made of polyethylene non-woven fabric "Tyvek" with excellent chemical resistance and fine perforations that provide ventilation and waterproofing functions, and both sides are bonded with non-woven fabric that offers protection and reinforcement. This groundbreaking product meets the necessary conditions for waterproofing, breathability, strength, workability, safety, and low cost, which are required for the top cover of general and industrial waste landfills after disposal has been completed. It suppresses the infiltration of rainwater and other liquids into the landfill waste layer and exhausts the gas generated from the landfill waste layer. It has a composite structure with high-strength non-woven fabric that excels in reinforcement. 【Features】 ○ Waterproof ○ Breathable ○ High strength ○ Safety ○ Easy to transport and install For more details, please contact us.

"Daily Cap" is a biodegradable alternative material for daily cover, aimed at increasing landfill capacity without compromising waste stabilization. Due to its thin thickness, it increases the landfill capacity. It excels in preventing waste scattering. Its unique structure makes it extremely flexible when it absorbs water, allowing it to adhere closely to the waste. It is easy to handle and adheres to the waste when watered, making it excellent for construction. [Features] - Increased landfill capacity - Scattering prevention - Adhesion - Permeability and biodegradability For more details, please contact us.

"Borklay Matt" is a waterproofing material used in civil engineering applications, including landfill sites, oil tank disaster prevention, and artificial ponds. It is a "reinforced" GCL made by sandwiching granular Na-type bentonite between woven and non-woven fabrics, fixed together by needle punching. The bentonite used in Borklay Matt is known for its high quality and purity, and it is utilized not only as a waterproofing material but also in a wide range of fields, leveraging its properties. 【Main Features】 - Forms an excellent impermeable layer with a permeability coefficient of 5×10^-9 cm/sec or less. - As bentonite is a natural inorganic material, it is expected to have semi-permanent durability. - The quality of bentonite is maintained even after repeated wetting, drying, freezing, and thawing. - It has durability sufficient to be used as a treatment material for high-level radioactive waste. - Even if pinholes or tears occur, bentonite swells and quickly self-repairs. For more details, please contact us.

We would like to introduce a case where the gas-permeable and waterproof capping sheet method "ADK Sheet" was implemented. In this project, it was necessary to excavate the waste from the existing final disposal site, set up a temporary sorting yard, and properly sort the waste for burial at a new final disposal site. After performing the burial work at the new final disposal site with appropriate waterproofing measures, the final cover was applied to complete the project. When implementing the final cover, we proposed the use of this sheet method to reduce the amount of rainwater infiltration into the waste and to allow gas generated from the waste layer to permeate, which was adopted. 【Case Overview】 ■ Adopted Method: Ventilated and Waterproof Sheet Method "ADK Sheet" ■ The ADK Sheet method can be used to suppress rainwater infiltration into the waste layer and allow gas permeation from the waste layer. ■ The ADK Sheet has a three-layer structure, with the middle layer made of "Tyvek," a polyethylene non-woven fabric that excels in chemical resistance, breathability, and waterproofing, and protective and reinforcing non-woven fabrics bonded to the upper and lower layers. *For more details, please download the PDF or feel free to contact us.