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- Fuel tank level gauges (automobiles, motorcycles)
- Carburetors (Motorcycles, agricultural machine engines)
- Engine oil level gauges
- Pneumatic auxiliary components (auto drain)
- Kerosene stove level gauges
- Other types of equipment that need level detection sensors
We currently manufacture floats with the following manufacturing method.
Type | Molding Method | Composition (raw material) |
Closed pore foam | High pressure double-stage foaming | NBR/Phenol |
Single-stage foaming |
Urethane |
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Resin injection foaming |
PP/Nylon | |
Hollow body |
Molded item joint |
POM/PP, etc |
Blow molding |
PP・PE |
With our float manufacturing method, we use high-pressure and double-stage foaming where vulcanization and foaming are processed in the two stages of vulcanization: primary vulcanization and secondary vulcanization.
We have many years of history working in the automobile industry. Our floats are the major industrial floats of the time.
The features of two-stage foaming are described as follows.
A tank float is part of a device that measures the fuel level based on the up and down movements of the liquid level.
They need to be excellent in terms of oil resistance and durability because they are used in fuels (gasoline, light oil, etc.)
(1) |
Floats used to be made of natural materials such as cork and wood. |
Problem: |
Problem: Low performance (shape, weight, oil resistance) |
(2) | Metallic hollow objects (hollow objects made from welded and sealed processed metallic shells) |
Problem: |
Problems: Large variation in the strength of the welded and joined sections. Peeling of joined sections due to impact Irregular shaped molded products and small and lightweight products cannot be manufactured. |
(3) | Conversion to high-polymer materials (rubber, plastic) |
Naigai Rubber Industry Co., Ltd. started producing floats for measuring the level of oil in tanks in oil carriers around 1955. In 1964, we started producing floats for gasoline engine carburetors and fuel gauges, and we are still producing them now.