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The service life of the silicone button, the pressing value (force and stroke), the number of times the surface wears, the number of times the conductive black particles fall off, and the long-term wear resistance of the surface silk screen.Silicone keypads are widely used in a variety of industrial control equipment, industrial instruments, CNC machine tools, smart home appliances, POS terminals, and other fields due to their superior properties.

1.The service life of the silicone buttons  pressing

The lifespan of silicone buttons is generally related to speed, force, travel, and number of presses. Therefore, the service life of silicone buttons can be customized based on different application scenarios. Typically, it's around 1 million times, and specialized silicone buttons can reach 15 million times. This requires strict specifications for the material and sloped wall structure of silicone buttons.

Silicone button life test, as shown below:

2.Pressing value (force and stroke)

• Force Range: The trigger force of silicone buttons is generally 50-200 gf (gram-force). This can be precisely controlled by adjusting the silicone hardness (Shore A 30-70 degrees) or structural design (such as guide post height and wall thickness).

• Force Curve Optimization: By adjusting material thickness and rebound structure, silicone buttons can achieve a peak-to-valley force ratio of 40%-60%, ensuring a comfortable feel.

• The pressure-travel curve for silicone buttons is shown below:

3.The number of times the conductive black particles fall off

The service life of conductive black particles: The carbon particles and silicone have a strong bond, and usually they may fall off after 500,000 to 1 million presses. High-end technology (such as embedded inner molding) can extend it to more than 2 million times.

The conductive black particles are set as shown below:

4.Surface silk screen durability

The service life of silk screen patterns is greatly affected by the frequency of use and environmental factors.

Test Standards: Silicone silk screen printing (characters/patterns) must remain legible after passing the alcohol rubbing test (1000+ times), a 500g load, and an abrasion test (10,000+ times). The eraser test is performed with a standard requirement of 1000 times and a high requirement of 30,000 times. Ordinary silk screen printing may become blurred after 100,000 times of rubbing.

Advantageous Technologies:

• Laser engraving: Permanent marking, no risk of peeling.

• Secondary curing: Ink bonds with silicone molecules, providing resistance to chemical corrosion (such as sweat and detergents).

• UV-curable ink: Improves adhesion and weather resistance.