What is the load-bearing capacity of ripple cups with lids? Will they soften when filled with liquid?

1. Where does their strong load-bearing capacity come from?

The corrugated inner lining (like a wave-shaped shock-absorbing pad) or ribbed support between the two layers of the cup wall of ripple cups with lids distributes the weight of the liquid across the entire cup body, so even when filled with 300ml of hot water, it will not collapse. The paper cup bottom uses a stamped and folded sealing process, with the two layers of paper tightly bonded together, like a 'reinforced base' for the cup. When holding it, there is no need to worry about leakage or cracking at the bottom.

2. Will it soften when filled with water?

When filling with hot drinks, the inner layer's PE coating prevents hot water from penetrating. When filled with cold drinks, while the outer wall of the cup may 'sweat' due to condensation, the inner layer is protected by the coating, maintaining its stiffness. Low-quality paper cups may have peeling coatings. When purchasing, look for brands with the QS mark, tear open the cup rim to check if the coating is evenly applied, and ensure there are no unusual odours for safety.

3. Tips for choosing paper cups

If you want to buy sturdy ripple cups with lids, choose styles labelled 'reinforced corrugated' or 'ribbed reinforcement' on the packaging. These cups have a more robust inner layer and are less likely to collapse when holding heavy items. If you frequently drink cold beverages, choose cups with anti-condensation treatment (such as an outer laminate) to reduce the issue of the outer wall softening. Genuine paper cups have 'unprinted zones' (15mm around the rim and 10mm at the base) to prevent ink from contaminating the beverage. When purchasing, squeeze the body of the ripple cups with lids; those that remain firm and do not collapse indicate better quality.