Graphic Design Recommendations for Silicone Keypads

At SiTech, we understand that graphic design is a crucial element in the overall functionality and visual appeal of silicone keypads. Whether it’s for product identification, user interaction, or enhancing aesthetic value, every detail matters. Below are our key considerations for ensuring high-quality, durable graphics on silicone keypads.

Keypad Graphics: Screen Printing for Positive and Reverse Graphics
All positive and reverse graphics are screen printed using proprietary silicone inks that form a cross-link bond with the silicone during the curing process. This process ensures long-lasting, durable graphics that stand up to industry-standard wear and tear. Screening can be done on both sides of clear silicone keypads, and each additional graphic color represents an extra step in the manufacturing process. We use Pantone numbers to specify colors, but we can also match custom color chips.

Key Design Guidelines for Graphics:

• Solid colors can be screened up to the edge of flat keytops.
• On curved keytops, solid colors can be screened up to 0.015″ from the tangent point of the outer radius.
• Minimum line width for legends: 0.007″.
• Minimum text height: 0.050″.
• Distance from the edge of the mat to the legend: 0.015″.
• Consistency: Color variations within 1 Delta for production runs.
• Typical screening tolerances: 0.015″.

Keytop Considerations for Graphic Screening

• Special attention must be given to keytop designs, especially for curved surfaces:
• Minimum radius for printing over the edge: 0.375″.
• For legend overruns onto the matte surface, a minimum transition radius of 0.010″ is required.
• Maximum curvature depth for concave keytops with a minimum radius of 0.375″: 0.060″.
• Maximum curvature height for convex keytops with a minimum radius of 0.375″: 0.060″.
  
  

Embossing and Engraving: Adding Texture and Dimension
To give your silicone keypads a unique look and feel, consider embossing or engraving. These methods allow you to add permanent graphics, text, or images directly to the surface of the keys. Whether you prefer raised (embossed) or recessed (engraved) designs, both options ensure long-lasting, fade-free graphics that enhance the tactile experience of the keypad.

Recommended Graphic File Formats
We accept various graphic design file formats to streamline the production process:

• .pdf (Adobe)
• .cdr (Corel Draw)
• .ai (Adobe Illustrator)
• .dwg (AutoCAD)
• .dxf (AutoCAD)
  
  

Additional Design Considerations
When designing your silicone keypads, the following details should also be taken into account to ensure precision and functionality:

• Keypad size and overall mat dimensions
• Keytop dimensions and key spacing
• Mounting holes and boss details
• Actuation force (grams)
• Material specifications (durometer, legends, and colors)
• Embossing or engraving details if applicable
  
  

Coating Options
We offer a range of coatings that further enhance the durability and functionality of your keypads:

• Abrasion resistance: Si Coat I
• Chemical resistance: Si Coat II
• Adhesive: Si Prime
  
  

Ensuring Durability and Aesthetic Appeal
At SiTech, we specialize in creating durable and visually appealing keypads through our screen printing and coating processes. Whether it’s adding vibrant colors, protecting your product with abrasion-resistant coatings, or incorporating unique graphic elements, we ensure that your silicone keypads meet the highest standards of quality and longevity.

For more information or to discuss your graphic design needs, contact SiTech at 757-887-84