April 8, 2026

Surface Energy: Why Stickers Stick to Glass but Not Some Plastics

Have you ever noticed that a sticker feels like it’s welded to a glass bottle, but can be easily flicked off a plastic storage bin or a powder-coated toolbox?

This isn’t usually a problem with the glue—it’s a scientific property called Surface Energy.

At Custom Sticker Print, we want your branding to last. Understanding how your product’s surface interacts with our adhesives will help you get the best results.

1. High Surface Energy (HSE) — The "Easy" Surfaces

Think of these like a magnetic attraction. Adhesives love HSE surfaces. They allow the glue to "wet out" and spread evenly across the surface.

Examples: Glass, Stainless Steel, Copper, and high-density plastics like Acrylic.
Result: Maximum bond, very hard to remove.

2. Low Surface Energy (LSE) — The "Difficult" Surfaces

LSE surfaces are like a non-stick frying pan. They actually repel the adhesive, causing the glue to "bead up" rather than flow into the surface.

Examples: Polypropylene (common in plastic bins), Polyethylene, Teflon, and Powder-Coated metals.
The Struggle: Even the best standard stickers or roll labels may start peeling at the edges on these materials.

3. How to Win Against Low Surface Energy

If you know your product has a "non-stick" feel or a rough, sandy texture:

Cleanliness is Mandatory: Use a 70% Isopropyl Alcohol wipe. This removes oils that lower surface energy even further.
Avoid Texture: Stickers need maximum surface contact. A heavily textured "orange peel" plastic significantly reduces the areas where the glue can grab.
Heat it Up: Using a heat gun during application can help the adhesive flow better into Laminated or LSE surfaces.