Silicone Keypad with Conductive Ink Printing
Conductive Ink Printing Silicone Keypads, also called electrically conductive ink printing silicone keyboard or conductive transfer & pad printing keypad, which choose electrically conductive printing ink & conductive carbon ink instead of black graphite pads & carbon pills as a silicone keypads electroconductive point. Backlight & laser engraving keymats, which conductive & contacts zones is irregular shape, circular ring shape or rectangular shaped and so on, mainly choose conductive ink printing.
Electrically Conductive Printing & Paint Ink Materials
Conductive materials like golden, silver, copper or carbon & graphite is dispersed in vehicle. Electrically Conductive Printing Ink ( silver conductive ink & golden conductive ink & copper conudctive ink & carbons conductive ink ) have conduction properties and used as printed conductive-dot or conducting circuits, which as a conductive materials, which is widely used in screen printing circuit, electrode, electroplate, silicone keypad & plastic keyboard contact, printed resistance etc.
Why choose electrically conductive printing oil & ink as silicone keypads contact?
1. Silicone Keyboard with Electrically Conductive Printing Ink is reliable.
Electrically conductive transfer & pad printing technology is mature, and also conductive printing ink is durable.
Auto parts or some test instrumentations, which conductive silicone keypad's contact should sustain high current and need lower resistance. Other product's switches like remoto control, electronic products, telephone set, toys etc, electrically conductive ink printing is good enough.
2. Save Production Cost Silicone Keypads with rounded & circluar shape black carbon pills or graphite pads, which can increase productivity by keypads positioning tools. Irregular shape, circular ring shape, rectangular shaped conductive keypads, or too small conductive zone can't do it.
Placed many black conductive graphite pads & carbon pills on keypads mold tooling for production, whick will affect the production efficiency.
And also irregular shape, circular ring shape or rectangular shaped graphite pads is not easy to purchase from markets, should be produced by silicone rubber compression molded tooling and die cutting.
3. Rework and Flexible
Unqulified Silicone Keyboard with electrically printing ink, which can rework by transfer printing tooling or by handwork, when unqualified.
Silicon keyboard with graphite pill or metal domes, which is molded, can't rework. What's silicone keyboard with conductive ink printing disadvantage
1. Electrically conductive printing ink silicone keypad, which contact resistance is mostly higher than black carbon pill, golden pills, nickel pads or metal domes etc.
Black Carbon Pill Keypad contact resistance which is easy to control below 100 OHMS, some can up to 0-50 OHMS.
Electric conductive printing Keypad contact resistance, mostly is about 150 OHMS, and possibly up to 200 OHMS.
If need electric conductive printing ink keypad’s control contact resistance, not only need choose good conductive materials as pad printing ink, but also need make precision assistant tooling and also increase conductive coating layers (more thicker)
2. Conductive Printing Silicone Rubber Keypads can't bear high current.
3. Black Carbon Pill keypad is more strong and durable.
After a long time use, elastomeric keypad’s electrically conductive ink will removing, and also keypad contact resistance will getting higher.
If need improving the lifespan of transfer conductive printing keypad, one is use qualified electric conductive ink, and make sure conductive coating ink is dry enough after drying. Silicone Rubber Keypad Manufacturing Process Features
Keypad Legend Types and Surface Protection
Typical Force/Stroke Curve
Xiamen Better Silicone Co., Ltd is specialized in designing and manufacturing all kinds and configurations of Silicone Rubber Products for a wide range of applications. Our silicone rubber keypad solutions combine excellent conductivity, reliability and long life span, which can meet all the environment's requirements and fit your individual needs.