I often get this question from our customers: "I bought this coated label; can I stick it on the barrels stored in the outdoor warehouse?"
My answer is clear: "You can stick it, but you won't find that label again after the first rain."
Coated labels are great in terms of price/performance, but they are not "Superman." Being paper-based, they remain vulnerable in environments unsuitable for their nature. Today, I will honestly explain the durability limits of coated label roll stickers and how you can store them for longer.
1. Water and Moisture Test: Can Coated Labels Be Washed?
The raw material of coated labels is paper. Although the "coated" finish on its surface gives it shine and ink retention, it cannot stop water.
- Slight Moisture: It won't cause problems on a jar that stays in the refrigerator for a short time.
- Direct Water Contact: If water spills on the label, the paper fibers absorb the water, swell, and become pulpy. If you touch it with your fingernail, it will disintegrate.
- Result: Coated Labels are NOT SUITABLE for shampoo, shower gel, or outdoor products. For these areas, you should prefer plastic-based Opaque PP.
2. Sun and Light Resistance: Solar?
Here, Coated Labels are much more successful than their rival, Thermal Labels.
- Thermal labels darken as soon as they see the sun (and sometimes even under fluorescent light).
- Coated labels, on the other hand, do not darken because they are printed with "Ribbon" (ink). However, because they are paper, if they remain in direct sunlight for a very long time (months), the paper itself may yellow, and the ink color may fade slightly.
- Result: Sun resistance is SUFFICIENT for warehouse shelves, in-store displays, or shipping packages.
Tips for Extending the Shelf Life of Unused Rolls
Sometimes my customers complain, "The labels I bought last year don't stick or print faintly on the printer." The problem is not with the label, but with the storage conditions. To keep your unused label rolls fresh, follow these 3 rules:
1. Keep Away from Moisture (50% Rule)
Paper loves and absorbs moisture. Label paper stored in a damp warehouse will warp (curl). This causes jams in the printer. Store rolls in a dry, room-temperature environment.
2. Protect from Direct Heat
Next to a radiator or in the trunk of a hot car in summer is a graveyard for labels. Heat causes the adhesive on the back of the label to melt or lose its properties. Your label becomes "stale" and won't stick.
3. Store in Its Box
Do not leave rolls exposed. Dust is the biggest enemy that damages the printhead. Storing them in their original box or a bag will always keep your print quality at its peak.
Summary Table: Where Should I Use Coated Labels?
| Environment | Suitability Status |
|---|---|
| Dry Warehouse / Shelf | ✅ Excellent (Lasts for years) |
| Refrigerator (+4°C) | ⚠️ Moderate (Suitable for short periods) |
| Deep Freezer (-18°C) | ❌ Not Suitable (Adhesive freezes and falls off) |
| Outdoor (Rain/Sun) | ❌ Not Suitable (Opaque PP should be used) |
Conclusion: Correct Diagnosis Saves Lives
Coated labels are the king of indoor use. For boxes, textiles, dry food, and retail, this is the most economical and high-quality solution. But don't expect it to fight with water or harsh weather conditions.
Not sure about the environment your product will be exposed to? Tell us what your product is, and we'll give you a "Spot-On" label recommendation. For consultation, you can use our contact page.
