![](/default/img/hblock/content/business/img/img3_1_eng.jpg)
Structural analysis result (CD)
![](/default/img/hblock/content/business/img/img3_2_eng.jpg)
Floating body shapes of the conventional technology and developed technology
![](/default/img/hblock/content/business/img/img3_3_eng.jpg)
* Patent registration: 10-2172303 Design registration: 30-1067606
Division | Polyethylene (PE) (Conventional technology) |
Fiber glass reinforced plastic (FRP) (Conventional technology) |
High density polyethylene (HDPE) (Developed technology) |
---|---|---|---|
Structure performance | Thickness is 3 mm or less Weak for shock and sunlight |
Low reliability in material properties Weak for shock and moisture |
Reliable material properties due to the isotropic material and resistance to shock |
Productivity | Continuous mass production is possible for the body | Difficulty in production due to manual work Styrofoam molding filling method |
Rotational molding for whole process Mass production is possible |
Constructability | Lightweight, excellent constructability | Good constructability | Excellent constructability lightweight |
Maintenance | Requires frequent replacement of connections Cracks and leaks at the edges |
Difficulty in maintenance Field work is difficult |
Convenient repair in case of damage Field work is easy |
Durability | Durability and chemical resistance concerns | Excellent durability and chemical resistance | Excellent durability and chemical resistance |
Economics | Not available for long-term use Low economics due to excessive replacement and maintenance |
High cost and difficulty in mass production due to manual work | Low cost and easy to establish mass production system |
When evaluating the durability of the material, it is estimated that the strength will decrease by 20% after 100 years.
![](/default/img/hblock/content/business/img/img3_4.jpg)
¡Ø Evidence data: Korea Conformity laboratories, 2016.11, Article 24 Sanitary and Safety Standards of Water Supply and Waterworks Installation Act, Quality assurance team of Daelim Industrial¡¯s Yeosu factory, 2019.03 Testing PE properties
¡Ø Evidence data : Exova, France, 2015. 06, Durability evaluation, 1 year testing period
¡Ø Evidence data : Exova, France, 2015. 06, Durability evaluation, 1 year testing period