Scratch-Off Latex
Scratch-off latex (also known as rub-removable, scratch-off ink, or scratch-off coating) is a fully opaque coating designed to conceal printed information beneath it until the surface is scratched away. The coating can be removed using a coin, plectrum, or even a fingernail, revealing the hidden message, image, or code underneath.
- Scratch-off latex is an opaque coating used to conceal printed content until scratched away.
- Ideal for scratch cards, promotions, codes, and interactive prints.
- Silver and gold are standard colours
- Works best on coated stocks between 200–400gsm — avoid uncoated papers.
- Allow adequate drying time between print, release coat, and latex layers to ensure adhesion.
- Leave at least 2mm overlap around scratch areas and space multiple panels apart.
- Use 100% black for overprinting on metallic latex for best legibility.
- Prevent show-through by using heavier stock or reducing ink tint beneath latex.
- Store finished pieces carefully to avoid accidental scratching before use.
Typical Applications
Scratch-off latex is widely used across both promotional and security-based print products, including:
- Scratch cards & promotional games
- Security codes and PIN reveals
- Competitions, prizes and instant win campaigns
- Parking permits and access passes
- Interactive marketing mailers
- Educational tools and children’s activity products
- Bucket-list, advent, wedding and travel reveal posters
- Event tickets, vouchers and coupons
Suitable Materials & Finishes
Choosing the right substrate is essential for durability and opacity:
| Application | Recommended Stock Weight |
|---|---|
| Posters & reveal charts | 200–250gsm |
| Tickets, cards & promotional scratchers | 300–400gsm |
| High-durability cards (e.g. parking permits) | 350–450gsm |
Stock Type Recommendations
- Coated stocks (silk or gloss) are preferred as they offer better adhesion for the release coating and latex.
- Uncoated stocks are not suitable due to high absorbency, leading to poor release and scratch performance.
Latex Colour Options
- Standard: Silver, Gold & Black
The Scratch-Off Production Process
Scratch-off latex can be applied to both digitally and lithographically printed materials. The typical workflow is:
1. Print the base layer
- Print the text or artwork that will be hidden beneath the latex.
- Avoid heavy ink coverage directly under the latex for best opacity and legibility.
2. Apply release coating (also called “lottery release seal”)
- This coating ensures the latex scratches off cleanly.
- Adequate drying/curing time is essential to prevent adhesion issues.
3. Optional lamination
- Gloss or matte lamination can be added for durability and a premium finish.
- Lamination must also fully cure before the latex application stage.
4. Apply the scratch-off latex ink
- Typically the final stage.
- However, sheets may be run back through the press to overprint onto the latex if required (e.g., for instructions such as “Scratch Here”).
Design & Artwork Considerations
To ensure optimal results:
- Allow 2mm bleed around any scratch-off area (the latex will slightly overlap the defined shape).
- Keep hidden text bold and high contrast for readability: black on white is ideal.
- Avoid placing fine text or thin lines underneath the latex—use clear, legible fonts.
- If multiple scratch areas are close together, leave at least 3–5mm spacing to avoid overlapping coatings.
Common Issues & How to Avoid Them
| Issue | Cause | Solution |
|---|---|---|
| Latex or lamination lifts or doesn’t adhere | Insufficient drying time or unsuitable stock | Ensure base print is fully dry. Allow full curing time between layers. Use coated paper. |
| Print shows through the reverse of the sheet | Stock too lightweight or high colour saturation | Use heavier stock or reduce ink tint under latex. Avoid highly saturated imagery beneath the latex. |
| Scratch-off areas too close together | Latex spread overlaps | Allow for approx 2mm spread beyond the defined shape. Space multiple panels accordingly. |
Handling, Storage & Fulfilment Tips
- Avoid stacking or packaging too soon after printing—fresh latex can scratch accidentally.
- Keep finished scratch-off products away from heat, friction, and moisture during storage and transit.
- If mailing scratch cards, consider cellowrap or envelopes to prevent premature abrasion.
Environmental & Safety Notes
- Scratch-off latex inks are generally non-toxic once cured, but not all are recyclable.
- For eco-focused projects, ask for water-based latex options where available.
- Avoid lamination if recyclability is a priority; consider aqueous seal or varnish instead.
Scratch-off latex is a versatile, interactive print technique that enhances engagement and adds an element of surprise or security. With the correct stock, drying times, artwork setup, and finishing process, it delivers a professional, clean-reveal result ideal for promotional campaigns, security applications and novelty products alike.
Frequently Asked Questions
Yes, but it’s not usually recommended. Latex can mark or transfer when stacked, so if both sides must include scratch areas, apply a protective slip sheet or ensure ample drying and curing time before finishing or packaging.
Absolutely. Variable data can be digitally printed before the latex layer is applied.
Yes. The latex can be applied in virtually any custom shape, not just rectangles or circles. Keep in mind that the coating spreads slightly (about 2mm) beyond the mask area.
When properly cured, the latex is durable but flexible, and resistant to light handling. It will scratch off cleanly with a coin or fingernail but can scuff if rubbed excessively before use.
Store in a cool, dry, flat environment away from heat and sunlight. Avoid stacking too tightly or under weight, as this may cause unwanted scratching or transfer between sheets.
For legibility and clean scratch-off performance, a minimum area of 10mm x 10mm is recommended. Smaller areas can flake unpredictably or fail to reveal the full image.
