Plastic Rubber Keypad, also called P+R Keypad, or Plastic + Silicone Rubber Keypad, which silicone keypad with plastic button cap & cover, in aim to improve keypad surface's wear-resisting (Plastic Button Cap wear-resisting test vedio.), dust free, oil proof surface for long lifespan , and also have good aesthetic & backlight effects.
Silicone Rubber Keypad with plastic key cap & cover, which is bonding by glue, not only take full advantage of plastic key & button cover materials advantage, also make use of elastomeric sealing functions of silicone rubber materials.
Plastic Button Cap & Cover main materials: PC. PMMA & Acrylic, PVC, ABS, ABS+PC etc.
Plastic Button Cover Legend & Symbols types:
Silk Screen Printing
Laser Eteched (color spraying coating and laser engraving for led backlight.)
Overmolded legends (silicone & LSR + plastic overmoding for backlight)
Plastic Button & Key Cap legends' protective Coating: UV coating or PU coating (Glossy or Matte Smooth), (mainly depends on keycap working environment.)
Plastic Silicone Rubber Keypad Production Process
1. Plastic Button Caps's injection mold-making, production and aided tooling-making
2. Silk screen printing, Or spraying coating+ laser etched, and do PU or UV coating.
3. Die Cutting for plastic button caps.
4. Assemble keycap and silicone keyboard by glue.
5. Rapid bonding or drying process combinantion
Plastic Rubber Keypad Advantages:
Good aesthetic and backlight effects.
Good Touch Feeling, oilproof, Anti-dust.
Cost effective to large quantities.
Long lifespan P+ R keypad
P+R Keypad Disadvantage:
High Toolings Cost: Plastic Injection mold cost, Die-cutting Tooling Cost, Positioning Toolings etc. If choose transparent PC&PMMA plastic key cap, which more expensive for injection molding as should choose good mold chamber steels and also need good injection machines gates.
Need a lot of labors for process and assembly.
Unsuitable to Low P+R keypad quantity.