Paper Ink Blog
Cup & Bag Sealing Stickers for Beverages: Sizes and Liquid-Resistant Materials
The sealing sticker is the last line of defence between your order and your customer — if it fails, the delivery arrives open or leaking. This guide explains how to calculate the right size and choose the right material for beverage cups and delivery bags.
Why the Sealing Sticker Matters More Than a “Final Touch”
A sealing sticker protects against spills and contamination, prevents the order from being opened during delivery, and shows the customer that the contents were untouched. A restaurant or café that invests in a reliable sealing sticker reduces delivery complaints and builds trust.
How to Get the Size Right for Each Packaging Type
Each packaging type has different requirements — here are the essentials:
Paper Bag Flap
A paper bag typically needs a rectangular sticker that covers the flap completely — 5×10 cm or 7×12 cm is most common. It must adhere firmly on both sides without tearing on opening.
Drink Cup Rim
Round cups need a circular sticker that matches the lid diameter — usually between 5 and 8 cm. The sticker should extend from the lid to the side of the cup enough to prevent accidental opening.
Meal Box with a Separate Lid
Meal boxes need a sticker that bonds both sides together — a 3×8 cm rectangle or a 5×5 cm square handles this effectively.
| Packaging Type | What the Sticker Needs to Do | Sizing Note |
|---|---|---|
| Paper bag | Seal the flap | Cover flap fully with 1 cm overlap |
| Drink cup | Bond lid to cup | Diameter 1–2 cm larger than lid |
| Meal box | Seal the lid | Extend past lid edge on both sides |
| Small box | Show info + seal | 5×5 cm works for most sizes |
Tip before bulk ordering: request a sample across your different sizes and test the actual seal on your packaging before placing the full order — a small step that saves you from a wasted batch.
Choosing Material: Hot Liquids vs. Cold
For hot drinks: choose heat-resistant vinyl or polypropylene that withstands steam without losing its adhesion. For cold and iced drinks: choose a moisture and condensation-resistant material — clear or white polypropylene is the best fit.
Browse our packaging stickers collection and request samples before your full order.
Frequently Asked Questions
Can my logo be printed on the sealing sticker?
Yes — logo, brand colours, and marketing messages can all be printed while preserving the sealing function.
What is the difference between removable and permanent adhesive for sealing stickers?
Permanent adhesive is stronger and difficult to open without damaging the sticker — ideal for tamper-evidence. Removable adhesive is easier to open but may not be enough to prevent tampering.
How do I confirm the right size for my cup?
Measure your lid diameter in millimetres and add 10–20 mm for overlap — send us the measurements and we will recommend the right size.
What are the production and delivery times?
3–5 business days for production, then 24–72 hours for shipping within Saudi Arabia.
