MMD Panel tanks
Different Tanks For Different Needs
One size and style does not fit all. At Sekisui, we have consistently listened and responded to the demands of our customers who desire special products for special situations.
Features
MMD Panel tanks
Sekisui tanks using GRP panels are Sekisui's most important product.
GRP stands for Glassfibre Reinforced Polyester and is also sometimes referred to as FRP.
The use of glassfibre for reinforcement results in a strong product which excels in resiliency.
Standard Design Specifications
| Design Life | 15 years | |
|---|---|---|
| Normal Maximum Hydrostatic Pressure |
Tank Height | Hydrostatic Pressure |
| 1.0mH | 9.8kPa (0.10kgf/cm2) | |
| 1.5mH | 14.7kPa (0.15kgf/cm2) | |
| 2.0mH | 19.6kPa (0.20kgf/cm2) | |
| 2.5mH | 24.5kPa (0.25kgf/cm2) | |
| 3.0mH | 29.4kPa (0.30kgf/cm2) | |
| 3.5mH | 34.3kPa (0.35kgf/cm2) | |
| 4.0mH | 39.2kPa (0.40kgf/cm2) | |
| Snow Load | 588Pa (60kgf/cm2) (Snow depth: 0.3m) | |
The Different Glassfibre Used In Panel Tanks
There are two methods of manufacture in the panel tank industry, the MMD (Matched Metal Die) method and the SMC (Sheet Mould Compound) method. The MMD method is Sekisui's own exclusive design and continues to be the most effective method for manufacturing tank panels today.
All other tank manufacturers use the SMC method. The MMD method uses long continuous filament of glassfibre in a mat form, adding resin and then submitting the mixture for the final moulding process.
In retrospect, the SMC uses short, chopped strands of glassfibre and resin in a "clay-like" mixture.
MMD
SMC
The Following Is A Simplified Explanation Of Our MMD System:
- First, the glassfibre sheets are constructed: Thin threads of glassfibre are tied together and are then woven into a net-like formation. The sheet in its final form is much like a piece of cloth.
- These fibre sheets are then stacked on top of each other. The number of sheets used depends on the type of panel to be constructed and the desired strength.
- The resin and other chemicals are applied and then pressed together to form the specified panel.
The Advantages Of The Sekisui MMD Panel Manufacturing Method
SEKISUI AQUA’S SMC
Uses long continuous filament fibre for extremely high strength!
Panel Uses
Highly suitable for high water pressure!
Highly suitable for water storage.
General SMC
Uses short-strand fibre which gives rise to questions regarding strength!
Suitable
for low water pressure applications!
Suitable for bathtubs (depth of 0.3m - 0.5m) and other items that only need to bear the weight of a single individual, such as chairs and the like.
Comparison Specifications
| Tensile Strength | |
| MMD Sekisui | 85 - 105MPa |
| SMC Company A | 58.8 - 100MPa |
| Hand Layup Company B | 39.2 - 68.6MPa |
Effective Capacity with TX Panels
These panels are ideal when maximum water capacity is required. In addition to 1 x 1 meter panels, 1 x 2 meter panels are also available.
