Industrial Electronics & HMI Prepress

Membrane Switch Graphic Overlay & Spacer Die Calculator

Calculate precision tactile metal dome cavity clearance, pneumatic air venting channel width, tail routing slot offsets, adhesive border seal margins, and multi-layer DXF die-line vectors for membrane keypads and HMI control panels.

1. Keypad & Tactile Dome Parameters

Tactile Metal Dome Specification

Nominal Dome Diameter (mm)

Total Keypad Button Count

Spacer Film & Adhesive Thickness (mm)

Flex Tail Exit Width (mm)

Width of the conductive silver FPC ribbon tail exiting the housing.

Die-Cutting Production Method

2. Engineered Spacer & Die Results

Spacer Cavity Hole Diameter: 9.00 mm

Radial Dome Clearance: +0.60 mm

Recommended Vent Channel Width: 0.90 mm

Perimeter Adhesive Seal Border: 3.50 mm (IP65)

Tail Slot Cutout Width: 26.90 mm

Emboss Rim Outer Diameter: 11.20 mm

Layer Alignment Target Tol: ±0.05 mm

Total Vent Path Network: Interconnected to Tail

Pneumatics & Quality Engineering Rules

• Vent channels MUST connect all switch cavities together and vent either internally to the flex tail or through an environmental GORE filter.

• Never allow adhesive to encroach within 0.3mm of the metal dome foot pads.

• Graphic overlay perimeter should be undersized by 0.25mm relative to the bezel pocket to prevent edge peeling.

Membrane Switch Multi-Layer Vector Hierarchy

                Layer 1: GRAPHIC_OVERLAY_ARTWORK (CMYK / Pantone Vector Spot Colors)

                Layer 2: OVERLAY_EMBOSS_TOOL (Rim / Pillow Emboss Tooling)

                Layer 3: TOP_ADHESIVE_SPACER_DIE (Dome Holes + Vent Channels)

                Layer 4: CONDUCTIVE_SILVER_CIRCUIT (Trace Lines + Contact Fingers)

                Layer 5: REAR_ADHESIVE_DIE (Chassis Mounting Die Cut)

Precise vector die alignment is mandatory. If the spacer cavity hole is undersized, the tactile dome wings will bind against the PET edge, ruining switch snap feel. If the vent channel is missing, the trapped air bubble creates pneumatic resistance and false actuation.

Vectorize Membrane Keypads & HMI Graphic Overlays

Convert your industrial control panel artwork and schematic drawings into multi-layer CAD vector bundles (DXF, EPS, PDF) with precision die-lines and registration crosshairs.

Convert Membrane Switch Vectors (29 DKK)