- Functional Logic: Setting the Size Baseline Based on Core Needs
The core function of a dome sticker determines its “minimum threshold” size — it must first meet the basic conditions required for the function to work. Whether for information display, physical protection, or warning purposes, size should always prioritise “functionality.” The dimensions should match the product’s packaging — in other words, the size of the product itself dictates the size of the sticker.
Information Display: Ensuring content completeness
If the dome sticker is used to display text, graphics, or other information (e.g., product specifications, brand logo, warning signs), its size must first guarantee clarity and readability. For example, a dome sticker printed with a brand logo should have a diameter that allows the smallest lines or text in the logo to remain legible — if the logo contains lines as thin as 3 mm, a sticker diameter under 15 mm may cause blurring when scaled down. For warning text like “Moisture Sensitive” or “Fragile,” text height typically needs to be ≥ 2 mm (the smallest readable size at a normal viewing distance), meaning the sticker diameter should be at least 10–15 mm to leave enough room for text and borders.
Information hierarchy also affects size: single elements (like one letter) can use smaller sizes (5–8 mm), while multi-element designs (such as text + icon) require larger space (20–30 mm) to avoid visual crowding and recognition issues.
Protective Function: Focusing on coverage area
Thanks to their raised surface, dome stickers are often used for physical protection (e.g., covering screw holes, concealing scratches) or waterproof sealing (e.g., electronics ports). In such cases, size must closely match the area to be protected: to cover a 5 mm screw hole, the sticker should be slightly larger (usually 1–2 mm extra) to ensure complete coverage and edge adhesion; for protecting the worn corners of a phone case, the size should match the corner area — too small fails to protect, too large may extend beyond the curve and cause peeling.
In industrial settings, protection-size accuracy is even more critical. For instance, when applying dome stickers to mechanical parts to prevent corrosion, size must precisely fit the target surface area — too small leaves gaps, too large may block ventilation or moving parts.
Tactile Interaction: Following ergonomic standards
Some dome stickers are designed as tactile interaction elements (e.g., button markers, Braille indicators). Their size should align with ergonomic comfort zones for touch. Studies show that the comfortable pressing diameter for an adult finger is 8–15 mm: stickers under 8 mm may cause touch inaccuracy, while those over 15 mm may reduce operational efficiency. For example, individual Braille dots on a dome sticker are typically 1.5 mm in diameter, and a small group of 2–3 dots should be kept around 10 mm overall — enough for accurate reading without excessive finger movement.
- Scenario Adaptation: Seamlessly Matching Size to the Usage Environment
The size of dome stickers should be closely tied to the physical space and usage method of the application scenario. Different settings impose different constraints, and choosing a size without considering context will likely cause poor results.
Small Carriers: Following the “non-intrusive” principle
For small carriers (e.g., stationery, jewellery, electronic accessories), size must not disrupt the function or aesthetics of the item. For example, on a laptop lid measuring 30 cm × 20 cm, a brand dome sticker diameter of 15–25 mm works well — small enough to avoid overpowering the design, yet large enough to be noticed. Anything over 30 mm risks dominating the surface. For decorative stickers on a fountain pen cap, diameters are typically 5–8 mm, covering only 10–15% of the cap surface, adding detail without affecting grip.
For curved surfaces (e.g., mugs, vases), curvature must be considered: the greater the curvature (e.g., the side of a thermos flask), the smaller the sticker should be (≤ 10 mm) to prevent edge lifting; for gentler curves (e.g., the back of a mouse), 12–18 mm can work, balancing visual impact and adhesion.
Large Carriers: Balancing “presence” and proportional harmony
On large carriers (e.g., furniture, gift boxes, wall décor), dome stickers should have enough presence to attract attention while remaining proportionate. For example, on a square gift box with 30 cm sides, a single decorative dome sticker is best sized 15–20 mm (about 1/20 to 1/15 of the side length) — large enough to be a focal point without appearing obtrusive. For sticker sets (varied sizes), apply a “primary–secondary” rule: main stickers at 20–25 mm, supporting stickers at 5–10 mm, creating a layered visual effect.
In wall décor, size should also consider viewing distance: for close-up viewing (e.g., a study’s background wall), 10–20 mm works well; for long-distance viewing (e.g., living room walls), 30–50 mm is better to avoid the design being visually diminished.
