CyanSunOperations
How to Store Paper Cups Before Use
Paper cups are hygroscopic: they take moisture from the air, soften and can delaminate. Storage is part of quality control, not an afterthought.
The rules
- Keep cartons closed and off the floor, on pallets.
- Store at 15–25°C and below 65% relative humidity.
- Keep away from kitchen steam, dishwashers and exterior walls.
- Use first in, first out; do not crush the cartons.
- Do not store near chemicals or strong smells — paper picks them up.
Shelf life
Sealed cartons are typically good for 12–24 months. Once opened, use within 4–6 weeks in a dry store; in a humid kitchen, sooner.
If cups feel soft, smell musty or the seam lifts, do not use them for hot drinks. Test a sample for leaks.
Frequently Asked Questions
Can I freeze paper cups?
No. Condensation damages the coating and the board.
How long do cups last?
12–24 months sealed; 4–6 weeks after opening in a dry store.
Why are my cups soft?
Moisture. Check humidity and whether cartons sit on the floor.
Need the numbers for your own cup?
Open the cup size calculator →